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Commit ff0c4ad2 authored by Linus Torvalds's avatar Linus Torvalds
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Merge branch 'for-upstream' of git://openrisc.net/jonas/linux 

* 'for-upstream' of git://openrisc.net/jonas/linux: (24 commits)
  OpenRISC: Add MAINTAINERS entry
  OpenRISC: Miscellaneous
  OpenRISC: Library routines
  OpenRISC: Headers
  OpenRISC: Traps
  OpenRISC: Module support
  OpenRISC: GPIO
  OpenRISC: Scheduling/Process management
  OpenRISC: Idle/Power management
  OpenRISC: System calls
  OpenRISC: IRQ
  OpenRISC: Timekeeping
  OpenRISC: DMA
  OpenRISC: PTrace
  OpenRISC: Build infrastructure
  OpenRISC: Signal handling
  OpenRISC: Memory management
  OpenRISC: Device tree
  OpenRISC: Boot code
  iomap: make IOPORT/PCI mapping functions conditional
  ...
parents fcda12e7 19f9d392
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MAINTAINERS
View file @ ff0c4ad2
...@@ -4688,6 +4688,14 @@ F: drivers/of ...@@ -4688,6 +4688,14 @@ F: drivers/of
F: include/linux/of*.h F: include/linux/of*.h
K: of_get_property K: of_get_property
OPENRISC ARCHITECTURE
M: Jonas Bonn <jonas@southpole.se>
W: http://openrisc.net
L: linux@lists.openrisc.net
S: Maintained
T: git git://openrisc.net/~jonas/linux
F: arch/openrisc
OPL4 DRIVER OPL4 DRIVER
M: Clemens Ladisch <clemens@ladisch.de> M: Clemens Ladisch <clemens@ladisch.de>
L: alsa-devel@alsa-project.org (moderated for non-subscribers) L: alsa-devel@alsa-project.org (moderated for non-subscribers)
......
arch/avr32/include/asm/delay.h
View file @ ff0c4ad2
#ifndef __ASM_AVR32_DELAY_H #include <asm-generic/delay.h>
#define __ASM_AVR32_DELAY_H
/*
* Copyright (C) 1993 Linus Torvalds
*
* Delay routines calling functions in arch/avr32/lib/delay.c
*/
extern void __bad_udelay(void);
extern void __bad_ndelay(void);
extern void __udelay(unsigned long usecs);
extern void __ndelay(unsigned long nsecs);
extern void __const_udelay(unsigned long xloops);
extern void __delay(unsigned long loops);
#define udelay(n) (__builtin_constant_p(n) ? \
((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c6ul)) : \
__udelay(n))
#define ndelay(n) (__builtin_constant_p(n) ? \
((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \
__ndelay(n))
#endif /* __ASM_AVR32_DELAY_H */
arch/m32r/include/asm/delay.h
View file @ ff0c4ad2
#ifndef _ASM_M32R_DELAY_H #include <asm-generic/delay.h>
#define _ASM_M32R_DELAY_H
/*
* Copyright (C) 1993 Linus Torvalds
*
* Delay routines calling functions in arch/m32r/lib/delay.c
*/
extern void __bad_udelay(void);
extern void __bad_ndelay(void);
extern void __udelay(unsigned long usecs);
extern void __ndelay(unsigned long nsecs);
extern void __const_udelay(unsigned long xloops);
extern void __delay(unsigned long loops);
#define udelay(n) (__builtin_constant_p(n) ? \
((n) > 20000 ? __bad_udelay() : __const_udelay((n) * 0x10c7ul)) : \
__udelay(n))
#define ndelay(n) (__builtin_constant_p(n) ? \
((n) > 20000 ? __bad_ndelay() : __const_udelay((n) * 5ul)) : \
__ndelay(n))
#endif /* _ASM_M32R_DELAY_H */
arch/openrisc/Kconfig 0 → 100644
View file @ ff0c4ad2
#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/config-language.txt.
#
config OPENRISC
def_bool y
select OF
select OF_EARLY_FLATTREE
select HAVE_MEMBLOCK
select ARCH_WANT_OPTIONAL_GPIOLIB
select HAVE_ARCH_TRACEHOOK
select HAVE_GENERIC_HARDIRQS
select GENERIC_IRQ_CHIP
select GENERIC_IRQ_PROBE
select GENERIC_IRQ_SHOW
select GENERIC_IOMAP
config MMU
def_bool y
config WISHBONE_BUS_BIG_ENDIAN
def_bool y
config SYMBOL_PREFIX
string
default ""
config HAVE_DMA_ATTRS
def_bool y
config UID16
def_bool y
config RWSEM_GENERIC_SPINLOCK
def_bool y
config RWSEM_XCHGADD_ALGORITHM
def_bool n
config GENERIC_HWEIGHT
def_bool y
config GENERIC_IOMAP
def_bool y
config NO_IOPORT
def_bool y
config GENERIC_GPIO
def_bool y
config GENERIC_CLOCKEVENTS
def_bool y
config TRACE_IRQFLAGS_SUPPORT
def_bool y
# For now, use generic checksum functions
#These can be reimplemented in assembly later if so inclined
config GENERIC_CSUM
def_bool y
config GENERIC_FIND_NEXT_BIT
def_bool y
source "init/Kconfig"
menu "Processor type and features"
choice
prompt "Subarchitecture"
default OR1K_1200
config OR1K_1200
bool "OR1200"
help
Generic OpenRISC 1200 architecture
endchoice
config OPENRISC_BUILTIN_DTB
string "Builtin DTB"
default ""
menu "Class II Instructions"
config OPENRISC_HAVE_INST_FF1
bool "Have instruction l.ff1"
default y
help
Select this if your implementation has the Class II instruction l.ff1
config OPENRISC_HAVE_INST_FL1
bool "Have instruction l.fl1"
default y
help
Select this if your implementation has the Class II instruction l.fl1
config OPENRISC_HAVE_INST_MUL
bool "Have instruction l.mul for hardware multiply"
default y
help
Select this if your implementation has a hardware multiply instruction
config OPENRISC_HAVE_INST_DIV
bool "Have instruction l.div for hardware divide"
default y
help
Select this if your implementation has a hardware divide instruction
endmenu
source "kernel/time/Kconfig"
source kernel/Kconfig.hz
source kernel/Kconfig.preempt
source "mm/Kconfig"
config OPENRISC_NO_SPR_SR_DSX
bool "use SPR_SR_DSX software emulation" if OR1K_1200
default y
help
SPR_SR_DSX bit is status register bit indicating whether
the last exception has happened in delay slot.
OpenRISC architecture makes it optional to have it implemented
in hardware and the OR1200 does not have it.
Say N here if you know that your OpenRISC processor has
SPR_SR_DSX bit implemented. Say Y if you are unsure.
config CMDLINE
string "Default kernel command string"
default ""
help
On some architectures there is currently no way for the boot loader
to pass arguments to the kernel. For these architectures, you should
supply some command-line options at build time by entering them
here.
menu "Debugging options"
config DEBUG_STACKOVERFLOW
bool "Check for kernel stack overflow"
default y
help
Make extra checks for space avaliable on stack in some
critical functions. This will cause kernel to run a bit slower,
but will catch most of kernel stack overruns and exit gracefuly.
Say Y if you are unsure.
config JUMP_UPON_UNHANDLED_EXCEPTION
bool "Try to die gracefully"
default y
help
Now this puts kernel into infinite loop after first oops. Till
your kernel crashes this doesn't have any influence.
Say Y if you are unsure.
config OPENRISC_EXCEPTION_DEBUG
bool "Print processor state at each exception"
default n
help
This option will make your kernel unusable for all but kernel
debugging.
Say N if you are unsure.
config OPENRISC_ESR_EXCEPTION_BUG_CHECK
bool "Check for possible ESR exception bug"
default n
help
This option enables some checks that might expose some problems
in kernel.
Say N if you are unsure.
endmenu
endmenu
menu "Executable file formats"
source "fs/Kconfig.binfmt"
endmenu
source "net/Kconfig"
source "drivers/Kconfig"
source "fs/Kconfig"
source "security/Kconfig"
source "crypto/Kconfig"
source "lib/Kconfig"
menu "Kernel hacking"
source "lib/Kconfig.debug"
endmenu
arch/openrisc/Makefile 0 → 100644
View file @ ff0c4ad2
# BK Id: %F% %I% %G% %U% %#%
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1994 by Linus Torvalds
# Modifications for the OpenRISC architecture:
# Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
# Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
#
# Based on:
# arch/i386/Makefile
KBUILD_DEFCONFIG := or1ksim_defconfig
LDFLAGS :=
OBJCOPYFLAGS := -O binary -R .note -R .comment -S
LDFLAGS_vmlinux :=
LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
KBUILD_CFLAGS += -pipe -ffixed-r10
ifeq ($(CONFIG_OPENRISC_HAVE_INST_MUL),y)
KBUILD_CFLAGS += $(call cc-option,-mhard-mul)
else
KBUILD_CFLAGS += $(call cc-option,-msoft-mul)
endif
ifeq ($(CONFIG_OPENRISC_HAVE_INST_DIV),y)
KBUILD_CFLAGS += $(call cc-option,-mhard-div)
else
KBUILD_CFLAGS += $(call cc-option,-msoft-div)
endif
head-y := arch/openrisc/kernel/head.o arch/openrisc/kernel/init_task.o
core-y += arch/openrisc/lib/ \
arch/openrisc/kernel/ \
arch/openrisc/mm/
libs-y += $(LIBGCC)
ifneq '$(CONFIG_OPENRISC_BUILTIN_DTB)' '""'
BUILTIN_DTB := y
else
BUILTIN_DTB := n
endif
core-$(BUILTIN_DTB) += arch/openrisc/boot/
all: vmlinux
arch/openrisc/README.openrisc 0 → 100644
View file @ ff0c4ad2
OpenRISC Linux
==============
This is a port of Linux to the OpenRISC class of microprocessors; the initial
target architecture, specifically, is the 32-bit OpenRISC 1000 family (or1k).
For information about OpenRISC processors and ongoing development:
website http://openrisc.net
For more information about Linux on OpenRISC, please contact South Pole AB.
email: info@southpole.se
website: http://southpole.se
http://southpoleconsulting.com
---------------------------------------------------------------------
Build instructions for OpenRISC toolchain and Linux
===================================================
In order to build and run Linux for OpenRISC, you'll need at least a basic
toolchain and, perhaps, the architectural simulator. Steps to get these bits
in place are outlined here.
1) The toolchain can be obtained from openrisc.net. Instructions for building
a toolchain can be found at:
http://openrisc.net/toolchain-build.html
2) or1ksim (optional)
or1ksim is the architectural simulator which will allow you to actually run
your OpenRISC Linux kernel if you don't have an OpenRISC processor at hand.
git clone git://openrisc.net/jonas/or1ksim-svn
cd or1ksim
./configure --prefix=$OPENRISC_PREFIX
make
make install
3) Linux kernel
Build the kernel as usual
make ARCH=openrisc defconfig
make ARCH=openrisc
4) Run in architectural simulator
Grab the or1ksim platform configuration file (from the or1ksim source) and
together with your freshly built vmlinux, run your kernel with the following
incantation:
sim -f arch/openrisc/or1ksim.cfg vmlinux
---------------------------------------------------------------------
Terminology
===========
In the code, the following particles are used on symbols to limit the scope
to more or less specific processor implementations:
openrisc: the OpenRISC class of processors
or1k: the OpenRISC 1000 family of processors
or1200: the OpenRISC 1200 processor
---------------------------------------------------------------------
History
========
18. 11. 2003 Matjaz Breskvar (phoenix@bsemi.com)
initial port of linux to OpenRISC/or32 architecture.
all the core stuff is implemented and seams usable.
08. 12. 2003 Matjaz Breskvar (phoenix@bsemi.com)
complete change of TLB miss handling.
rewrite of exceptions handling.
fully functional sash-3.6 in default initrd.
a much improved version with changes all around.
10. 04. 2004 Matjaz Breskvar (phoenix@bsemi.com)
alot of bugfixes all over.
ethernet support, functional http and telnet servers.
running many standard linux apps.
26. 06. 2004 Matjaz Breskvar (phoenix@bsemi.com)
port to 2.6.x
30. 11. 2004 Matjaz Breskvar (phoenix@bsemi.com)
lots of bugfixes and enhancments.
added opencores framebuffer driver.
09. 10. 2010 Jonas Bonn (jonas@southpole.se)
major rewrite to bring up to par with upstream Linux 2.6.36
arch/openrisc/TODO.openrisc 0 → 100644
View file @ ff0c4ad2
The OpenRISC Linux port is fully functional and has been tracking upstream
since 2.6.35. There are, however, remaining items to be completed within
the coming months. Here's a list of known-to-be-less-than-stellar items
that are due for investigation shortly, i.e. our TODO list:
-- Implement the rest of the DMA API... dma_map_sg, etc.
-- Consolidate usage of memblock and bootmem... move everything over to
memblock.
-- Finish the renaming cleanup... there are references to or32 in the code
which was an older name for the architecture. The name we've settled on is
or1k and this change is slowly trickling through the stack. For the time
being, or32 is equivalent to or1k.
-- Implement optimized version of memcpy and memset
arch/openrisc/boot/Makefile 0 → 100644
View file @ ff0c4ad2
ifneq '$(CONFIG_OPENRISC_BUILTIN_DTB)' '""'
BUILTIN_DTB := $(patsubst "%",%,$(CONFIG_OPENRISC_BUILTIN_DTB)).dtb.o
else
BUILTIN_DTB :=
endif
obj-y += $(BUILTIN_DTB)
clean-files := *.dtb.S
#DTC_FLAGS ?= -p 1024
$(obj)/%.dtb: $(src)/dts/%.dts
$(call cmd,dtc)
arch/openrisc/boot/dts/or1ksim.dts 0 → 100644
View file @ ff0c4ad2
/dts-v1/;
/ {
compatible = "opencores,or1ksim";
#address-cells = <1>;
#size-cells = <1>;
interrupt-parent = <&pic>;
chosen {
bootargs = "console=uart,mmio,0x90000000,115200";
};
memory@0 {
device_type = "memory";
reg = <0x00000000 0x02000000>;
};
cpus {
#address-cells = <1>;
#size-cells = <0>;
cpu@0 {
compatible = "opencores,or1200-rtlsvn481";
reg = <0>;
clock-frequency = <20000000>;
};
};
/*
* OR1K PIC is built into CPU and accessed via special purpose
* registers. It is not addressable and, hence, has no 'reg'
* property.
*/
pic: pic {
compatible = "opencores,or1k-pic";
#interrupt-cells = <1>;
interrupt-controller;
};
serial0: serial@90000000 {
compatible = "opencores,uart16550-rtlsvn105", "ns16550a";
reg = <0x90000000 0x100>;
interrupts = <2>;
clock-frequency = <20000000>;
};
enet0: ethoc@92000000 {
compatible = "opencores,ethmac-rtlsvn338";
reg = <0x92000000 0x100>;
interrupts = <4>;
};
};
arch/openrisc/configs/or1ksim_defconfig 0 → 100644
View file @ ff0c4ad2
CONFIG_CROSS_COMPILE="or32-linux-"
CONFIG_LOG_BUF_SHIFT=14
CONFIG_BLK_DEV_INITRD=y
# CONFIG_RD_GZIP is not set
CONFIG_EXPERT=y
# CONFIG_SYSCTL_SYSCALL is not set
# CONFIG_KALLSYMS is not set
# CONFIG_EPOLL is not set
# CONFIG_TIMERFD is not set
# CONFIG_EVENTFD is not set
# CONFIG_AIO is not set
# CONFIG_VM_EVENT_COUNTERS is not set
# CONFIG_COMPAT_BRK is not set
CONFIG_SLOB=y
CONFIG_MODULES=y
# CONFIG_BLOCK is not set
CONFIG_OPENRISC_BUILTIN_DTB="or1ksim"
CONFIG_NO_HZ=y
CONFIG_HZ_100=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_LRO is not set
# CONFIG_INET_DIAG is not set
CONFIG_TCP_CONG_ADVANCED=y
# CONFIG_TCP_CONG_BIC is not set
# CONFIG_TCP_CONG_CUBIC is not set
# CONFIG_TCP_CONG_WESTWOOD is not set
# CONFIG_TCP_CONG_HTCP is not set
# CONFIG_IPV6 is not set
# CONFIG_WIRELESS is not set
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
# CONFIG_PREVENT_FIRMWARE_BUILD is not set
# CONFIG_FW_LOADER is not set
CONFIG_PROC_DEVICETREE=y
CONFIG_NETDEVICES=y
CONFIG_MICREL_PHY=y
CONFIG_NET_ETHERNET=y
CONFIG_ETHOC=y
# CONFIG_NETDEV_1000 is not set
# CONFIG_NETDEV_10000 is not set
# CONFIG_WLAN is not set
# CONFIG_INPUT is not set
# CONFIG_SERIO is not set
# CONFIG_VT is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_OF_PLATFORM=y
# CONFIG_HW_RANDOM is not set
# CONFIG_HWMON is not set
# CONFIG_MFD_SUPPORT is not set
# CONFIG_USB_SUPPORT is not set
# CONFIG_DNOTIFY is not set
CONFIG_TMPFS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3=y
# CONFIG_ENABLE_WARN_DEPRECATED is not set
# CONFIG_ENABLE_MUST_CHECK is not set
arch/openrisc/include/asm/Kbuild 0 → 100644
View file @ ff0c4ad2
include include/asm-generic/Kbuild.asm
header-y += spr_defs.h
generic-y += atomic.h
generic-y += auxvec.h
generic-y += bitsperlong.h
generic-y += bug.h
generic-y += bugs.h
generic-y += cacheflush.h
generic-y += checksum.h
generic-y += cmpxchg.h
generic-y += cmpxchg-local.h
generic-y += cpumask.h
generic-y += cputime.h
generic-y += current.h
generic-y += device.h
generic-y += div64.h
generic-y += dma.h
generic-y += emergency-restart.h
generic-y += errno.h
generic-y += fb.h
generic-y += fcntl.h
generic-y += ftrace.h
generic-y += futex.h
generic-y += hardirq.h
generic-y += hw_irq.h
generic-y += ioctl.h
generic-y += ioctls.h
generic-y += ipcbuf.h
generic-y += irq_regs.h
generic-y += kdebug.h
generic-y += kmap_types.h
generic-y += local.h
generic-y += mman.h
generic-y += module.h
generic-y += msgbuf.h
generic-y += pci.h
generic-y += percpu.h
generic-y += poll.h
generic-y += posix_types.h
generic-y += resource.h
generic-y += rmap.h
generic-y += scatterlist.h
generic-y += sections.h
generic-y += segment.h
generic-y += sembuf.h
generic-y += setup.h
generic-y += shmbuf.h
generic-y += shmparam.h
generic-y += siginfo.h
generic-y += signal.h
generic-y += socket.h
generic-y += sockios.h
generic-y += statfs.h
generic-y += stat.h
generic-y += string.h
generic-y += swab.h
generic-y += termbits.h
generic-y += termios.h
generic-y += topology.h
generic-y += types.h
generic-y += ucontext.h
generic-y += user.h
arch/openrisc/include/asm/asm-offsets.h 0 → 100644
View file @ ff0c4ad2
#include <generated/asm-offsets.h>
arch/openrisc/include/asm/bitops.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_BITOPS_H
#define __ASM_OPENRISC_BITOPS_H
/*
* Where we haven't written assembly versions yet, we fall back to the
* generic implementations. Otherwise, we pull in our (hopefully)
* optimized versions.
*/
#include <linux/irqflags.h>
#include <linux/compiler.h>
/*
* clear_bit may not imply a memory barrier
*/
#ifndef smp_mb__before_clear_bit
#define smp_mb__before_clear_bit() smp_mb()
#define smp_mb__after_clear_bit() smp_mb()
#endif
#include <asm/bitops/__ffs.h>
#include <asm-generic/bitops/ffz.h>
#include <asm/bitops/fls.h>
#include <asm/bitops/__fls.h>
#include <asm-generic/bitops/fls64.h>
#include <asm-generic/bitops/find.h>
#ifndef _LINUX_BITOPS_H
#error only <linux/bitops.h> can be included directly
#endif
#include <asm-generic/bitops/sched.h>
#include <asm/bitops/ffs.h>
#include <asm-generic/bitops/hweight.h>
#include <asm-generic/bitops/lock.h>
#include <asm-generic/bitops/atomic.h>
#include <asm-generic/bitops/non-atomic.h>
#include <asm-generic/bitops/ext2-atomic.h>
#endif /* __ASM_GENERIC_BITOPS_H */
arch/openrisc/include/asm/bitops/__ffs.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC___FFS_H
#define __ASM_OPENRISC___FFS_H
#ifdef CONFIG_OPENRISC_HAVE_INST_FF1
static inline unsigned long __ffs(unsigned long x)
{
int ret;
__asm__ ("l.ff1 %0,%1"
: "=r" (ret)
: "r" (x));
return ret-1;
}
#else
#include <asm-generic/bitops/__ffs.h>
#endif
#endif /* __ASM_OPENRISC___FFS_H */
arch/openrisc/include/asm/bitops/__fls.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC___FLS_H
#define __ASM_OPENRISC___FLS_H
#ifdef CONFIG_OPENRISC_HAVE_INST_FL1
static inline unsigned long __fls(unsigned long x)
{
int ret;
__asm__ ("l.fl1 %0,%1"
: "=r" (ret)
: "r" (x));
return ret-1;
}
#else
#include <asm-generic/bitops/__fls.h>
#endif
#endif /* __ASM_OPENRISC___FLS_H */
arch/openrisc/include/asm/bitops/ffs.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_FFS_H
#define __ASM_OPENRISC_FFS_H
#ifdef CONFIG_OPENRISC_HAVE_INST_FF1
static inline int ffs(int x)
{
int ret;
__asm__ ("l.ff1 %0,%1"
: "=r" (ret)
: "r" (x));
return ret;
}
#else
#include <asm-generic/bitops/ffs.h>
#endif
#endif /* __ASM_OPENRISC_FFS_H */
arch/openrisc/include/asm/bitops/fls.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_FLS_H
#define __ASM_OPENRISC_FLS_H
#ifdef CONFIG_OPENRISC_HAVE_INST_FL1
static inline int fls(int x)
{
int ret;
__asm__ ("l.fl1 %0,%1"
: "=r" (ret)
: "r" (x));
return ret;
}
#else
#include <asm-generic/bitops/fls.h>
#endif
#endif /* __ASM_OPENRISC_FLS_H */
arch/openrisc/include/asm/byteorder.h 0 → 100644
View file @ ff0c4ad2
#include <linux/byteorder/big_endian.h>
arch/openrisc/include/asm/cache.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_CACHE_H
#define __ASM_OPENRISC_CACHE_H
/* FIXME: How can we replace these with values from the CPU...
* they shouldn't be hard-coded!
*/
#define L1_CACHE_BYTES 16
#define L1_CACHE_SHIFT 4
#endif /* __ASM_OPENRISC_CACHE_H */
arch/openrisc/include/asm/cpuinfo.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_CPUINFO_H
#define __ASM_OPENRISC_CPUINFO_H
struct cpuinfo {
u32 clock_frequency;
u32 icache_size;
u32 icache_block_size;
u32 dcache_size;
u32 dcache_block_size;
};
extern struct cpuinfo cpuinfo;
#endif /* __ASM_OPENRISC_CPUINFO_H */
arch/openrisc/include/asm/delay.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_DELAY_H
#define __ASM_OPENRISC_DELAY_H
#include <asm-generic/delay.h>
extern unsigned long loops_per_jiffy;
#endif
arch/openrisc/include/asm/dma-mapping.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_DMA_MAPPING_H
#define __ASM_OPENRISC_DMA_MAPPING_H
/*
* See Documentation/PCI/PCI-DMA-mapping.txt and
* Documentation/DMA-API.txt for documentation.
*
* This file is written with the intention of eventually moving over
* to largely using asm-generic/dma-mapping-common.h in its place.
*/
#include <linux/dma-debug.h>
#include <asm-generic/dma-coherent.h>
#include <linux/kmemcheck.h>
#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
int dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
void *or1k_dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag);
void or1k_dma_free_coherent(struct device *dev, size_t size, void *vaddr,
dma_addr_t dma_handle);
dma_addr_t or1k_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction dir,
struct dma_attrs *attrs);
void or1k_unmap_page(struct device *dev, dma_addr_t dma_handle,
size_t size, enum dma_data_direction dir,
struct dma_attrs *attrs);
void or1k_sync_single_for_cpu(struct device *dev,
dma_addr_t dma_handle, size_t size,
enum dma_data_direction dir);
void or1k_sync_single_for_device(struct device *dev,
dma_addr_t dma_handle, size_t size,
enum dma_data_direction dir);
static inline void *dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
void *memory;
memory = or1k_dma_alloc_coherent(dev, size, dma_handle, flag);
debug_dma_alloc_coherent(dev, size, *dma_handle, memory);
return memory;
}
static inline void dma_free_coherent(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_handle)
{
debug_dma_free_coherent(dev, size, cpu_addr, dma_handle);
or1k_dma_free_coherent(dev, size, cpu_addr, dma_handle);
}
static inline dma_addr_t dma_map_single(struct device *dev, void *ptr,
size_t size,
enum dma_data_direction dir)
{
dma_addr_t addr;
kmemcheck_mark_initialized(ptr, size);
BUG_ON(!valid_dma_direction(dir));
addr = or1k_map_page(dev, virt_to_page(ptr),
(unsigned long)ptr & ~PAGE_MASK, size,
dir, NULL);
debug_dma_map_page(dev, virt_to_page(ptr),
(unsigned long)ptr & ~PAGE_MASK, size,
dir, addr, true);
return addr;
}
static inline void dma_unmap_single(struct device *dev, dma_addr_t addr,
size_t size,
enum dma_data_direction dir)
{
BUG_ON(!valid_dma_direction(dir));
or1k_unmap_page(dev, addr, size, dir, NULL);
debug_dma_unmap_page(dev, addr, size, dir, true);
}
static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t addr,
size_t size,
enum dma_data_direction dir)
{
BUG_ON(!valid_dma_direction(dir));
or1k_sync_single_for_cpu(dev, addr, size, dir);
debug_dma_sync_single_for_cpu(dev, addr, size, dir);
}
static inline void dma_sync_single_for_device(struct device *dev,
dma_addr_t addr, size_t size,
enum dma_data_direction dir)
{
BUG_ON(!valid_dma_direction(dir));
or1k_sync_single_for_device(dev, addr, size, dir);
debug_dma_sync_single_for_device(dev, addr, size, dir);
}
static inline int dma_supported(struct device *dev, u64 dma_mask)
{
/* Support 32 bit DMA mask exclusively */
return dma_mask == 0xffffffffULL;
}
static inline int dma_set_mask(struct device *dev, u64 dma_mask)
{
if (!dev->dma_mask || !dma_supported(dev, dma_mask))
return -EIO;
*dev->dma_mask = dma_mask;
return 0;
}
#endif /* __ASM_OPENRISC_DMA_MAPPING_H */
arch/openrisc/include/asm/elf.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_ELF_H
#define __ASM_OPENRISC_ELF_H
/*
* ELF register definitions..
*/
#include <linux/types.h>
#include <linux/ptrace.h>
/* The OR1K relocation types... not all relevant for module loader */
#define R_OR32_NONE 0
#define R_OR32_32 1
#define R_OR32_16 2
#define R_OR32_8 3
#define R_OR32_CONST 4
#define R_OR32_CONSTH 5
#define R_OR32_JUMPTARG 6
#define R_OR32_VTINHERIT 7
#define R_OR32_VTENTRY 8
typedef unsigned long elf_greg_t;
/*
* Note that NGREG is defined to ELF_NGREG in include/linux/elfcore.h, and is
* thus exposed to user-space.
*/
#define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t))
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
/* A placeholder; OR32 does not have fp support yes, so no fp regs for now. */
typedef unsigned long elf_fpregset_t;
/* This should be moved to include/linux/elf.h */
#define EM_OR32 0x8472
#define EM_OPENRISC 92 /* OpenRISC 32-bit embedded processor */
/*
* These are used to set parameters in the core dumps.
*/
#define ELF_ARCH EM_OR32
#define ELF_CLASS ELFCLASS32
#define ELF_DATA ELFDATA2MSB
#ifdef __KERNEL__
/*
* This is used to ensure we don't load something for the wrong architecture.
*/
#define elf_check_arch(x) \
(((x)->e_machine == EM_OR32) || ((x)->e_machine == EM_OPENRISC))
/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
use of this is to invoke "./ld.so someprog" to test out a new version of
the loader. We need to make sure that it is out of the way of the program
that it will "exec", and that there is sufficient room for the brk. */
#define ELF_ET_DYN_BASE (0x08000000)
/*
* Enable dump using regset.
* This covers all of general/DSP/FPU regs.
*/
#define CORE_DUMP_USE_REGSET
#define ELF_EXEC_PAGESIZE 8192
extern void dump_elf_thread(elf_greg_t *dest, struct pt_regs *pt);
#define ELF_CORE_COPY_REGS(dest, regs) dump_elf_thread(dest, regs);
/* This yields a mask that user programs can use to figure out what
instruction set this cpu supports. This could be done in userspace,
but it's not easy, and we've already done it here. */
#define ELF_HWCAP (0)
/* This yields a string that ld.so will use to load implementation
specific libraries for optimization. This is more specific in
intent than poking at uname or /proc/cpuinfo.
For the moment, we have only optimizations for the Intel generations,
but that could change... */
#define ELF_PLATFORM (NULL)
#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
#endif /* __KERNEL__ */
#endif
arch/openrisc/include/asm/fixmap.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_FIXMAP_H
#define __ASM_OPENRISC_FIXMAP_H
/* Why exactly do we need 2 empty pages between the top of the fixed
* addresses and the top of virtual memory? Something is using that
* memory space but not sure what right now... If you find it, leave
* a comment here.
*/
#define FIXADDR_TOP ((unsigned long) (-2*PAGE_SIZE))
#include <linux/kernel.h>
#include <asm/page.h>
/*
* On OpenRISC we use these special fixed_addresses for doing ioremap
* early in the boot process before memory initialization is complete.
* This is used, in particular, by the early serial console code.
*
* It's not really 'fixmap', per se, but fits loosely into the same
* paradigm.
*/
enum fixed_addresses {
/*
* FIX_IOREMAP entries are useful for mapping physical address
* space before ioremap() is useable, e.g. really early in boot
* before kmalloc() is working.
*/
#define FIX_N_IOREMAPS 32
FIX_IOREMAP_BEGIN,
FIX_IOREMAP_END = FIX_IOREMAP_BEGIN + FIX_N_IOREMAPS - 1,
__end_of_fixed_addresses
};
#define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
/* FIXADDR_BOTTOM might be a better name here... */
#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT))
#define __virt_to_fix(x) ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT)
/*
* 'index to address' translation. If anyone tries to use the idx
* directly without tranlation, we catch the bug with a NULL-deference
* kernel oops. Illegal ranges of incoming indices are caught too.
*/
static __always_inline unsigned long fix_to_virt(const unsigned int idx)
{
/*
* this branch gets completely eliminated after inlining,
* except when someone tries to use fixaddr indices in an
* illegal way. (such as mixing up address types or using
* out-of-range indices).
*
* If it doesn't get removed, the linker will complain
* loudly with a reasonably clear error message..
*/
if (idx >= __end_of_fixed_addresses)
BUG();
return __fix_to_virt(idx);
}
static inline unsigned long virt_to_fix(const unsigned long vaddr)
{
BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START);
return __virt_to_fix(vaddr);
}
#endif
arch/openrisc/include/asm/gpio.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_GPIO_H
#define __ASM_OPENRISC_GPIO_H
#include <linux/errno.h>
#include <asm-generic/gpio.h>
#ifdef CONFIG_GPIOLIB
/*
* OpenRISC (or1k) does not have on-chip GPIO's so there is not really
* any standardized implementation that makes sense here. If passing
* through gpiolib becomes a bottleneck then it may make sense, on a
* case-by-case basis, to implement these inlined/rapid versions.
*
* Just call gpiolib.
*/
static inline int gpio_get_value(unsigned int gpio)
{
return __gpio_get_value(gpio);
}
static inline void gpio_set_value(unsigned int gpio, int value)
{
__gpio_set_value(gpio, value);
}
static inline int gpio_cansleep(unsigned int gpio)
{
return __gpio_cansleep(gpio);
}
/*
* Not implemented, yet.
*/
static inline int gpio_to_irq(unsigned int gpio)
{
return -ENOSYS;
}
static inline int irq_to_gpio(unsigned int irq)
{
return -EINVAL;
}
#endif /* CONFIG_GPIOLIB */
#endif /* __ASM_OPENRISC_GPIO_H */
arch/openrisc/include/asm/io.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_IO_H
#define __ASM_OPENRISC_IO_H
/*
* PCI: can we really do 0 here if we have no port IO?
*/
#define IO_SPACE_LIMIT 0
/* OpenRISC has no port IO */
#define HAVE_ARCH_PIO_SIZE 1
#define PIO_RESERVED 0X0UL
#define PIO_OFFSET 0
#define PIO_MASK 0
#include <asm-generic/io.h>
extern void __iomem *__ioremap(phys_addr_t offset, unsigned long size,
pgprot_t prot);
static inline void __iomem *ioremap(phys_addr_t offset, unsigned long size)
{
return __ioremap(offset, size, PAGE_KERNEL);
}
/* #define _PAGE_CI 0x002 */
static inline void __iomem *ioremap_nocache(phys_addr_t offset,
unsigned long size)
{
return __ioremap(offset, size,
__pgprot(pgprot_val(PAGE_KERNEL) | _PAGE_CI));
}
extern void iounmap(void *addr);
#endif
arch/openrisc/include/asm/irq.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_IRQ_H__
#define __ASM_OPENRISC_IRQ_H__
#define NR_IRQS 32
#include <asm-generic/irq.h>
#define NO_IRQ (-1)
#endif /* __ASM_OPENRISC_IRQ_H__ */
arch/openrisc/include/asm/irqflags.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef ___ASM_OPENRISC_IRQFLAGS_H
#define ___ASM_OPENRISC_IRQFLAGS_H
#include <asm/spr_defs.h>
#define ARCH_IRQ_DISABLED 0x00
#define ARCH_IRQ_ENABLED (SPR_SR_IEE|SPR_SR_TEE)
#include <asm-generic/irqflags.h>
#endif /* ___ASM_OPENRISC_IRQFLAGS_H */
arch/openrisc/include/asm/linkage.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_LINKAGE_H
#define __ASM_OPENRISC_LINKAGE_H
#define __ALIGN .align 0
#define __ALIGN_STR ".align 0"
#endif /* __ASM_OPENRISC_LINKAGE_H */
arch/openrisc/include/asm/memblock.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_MEMBLOCK_H
#define __ASM_OPENRISC_MEMBLOCK_H
/* empty */
#endif /* __ASM_OPENRISC_MEMBLOCK_H */
arch/openrisc/include/asm/mmu.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_MMU_H
#define __ASM_OPENRISC_MMU_H
#ifndef __ASSEMBLY__
typedef unsigned long mm_context_t;
#endif
#endif
arch/openrisc/include/asm/mmu_context.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_MMU_CONTEXT_H
#define __ASM_OPENRISC_MMU_CONTEXT_H
#include <asm-generic/mm_hooks.h>
extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
extern void destroy_context(struct mm_struct *mm);
extern void switch_mm(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk);
#define deactivate_mm(tsk, mm) do { } while (0)
#define activate_mm(prev, next) switch_mm((prev), (next), NULL)
/* current active pgd - this is similar to other processors pgd
* registers like cr3 on the i386
*/
extern volatile pgd_t *current_pgd; /* defined in arch/openrisc/mm/fault.c */
static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
{
}
#endif
arch/openrisc/include/asm/mutex.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
/*
* Pull in the generic implementation for the mutex fastpath.
*
* TODO: implement optimized primitives instead, or leave the generic
* implementation in place, or pick the atomic_xchg() based generic
* implementation. (see asm-generic/mutex-xchg.h for details)
*/
#include <asm-generic/mutex-dec.h>
arch/openrisc/include/asm/page.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_PAGE_H
#define __ASM_OPENRISC_PAGE_H
/* PAGE_SHIFT determines the page size */
#define PAGE_SHIFT 13
#ifdef __ASSEMBLY__
#define PAGE_SIZE (1 << PAGE_SHIFT)
#else
#define PAGE_SIZE (1UL << PAGE_SHIFT)
#endif
#define PAGE_MASK (~(PAGE_SIZE-1))
#define PAGE_OFFSET 0xc0000000
#define KERNELBASE PAGE_OFFSET
/* This is not necessarily the right place for this, but it's needed by
* drivers/of/fdt.c
*/
#include <asm/setup.h>
#ifndef __ASSEMBLY__
#define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
#define free_user_page(page, addr) free_page(addr)
#define clear_page(page) memset((page), 0, PAGE_SIZE)
#define copy_page(to, from) memcpy((to), (from), PAGE_SIZE)
#define clear_user_page(page, vaddr, pg) clear_page(page)
#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
/*
* These are used to make use of C type-checking..
*/
typedef struct {
unsigned long pte;
} pte_t;
typedef struct {
unsigned long pgd;
} pgd_t;
typedef struct {
unsigned long pgprot;
} pgprot_t;
typedef struct page *pgtable_t;
#define pte_val(x) ((x).pte)
#define pgd_val(x) ((x).pgd)
#define pgprot_val(x) ((x).pgprot)
#define __pte(x) ((pte_t) { (x) })
#define __pgd(x) ((pgd_t) { (x) })
#define __pgprot(x) ((pgprot_t) { (x) })
extern unsigned long memory_start;
extern unsigned long memory_end;
#endif /* !__ASSEMBLY__ */
#ifndef __ASSEMBLY__
#define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET))
#define __pa(x) ((unsigned long) (x) - PAGE_OFFSET)
#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
#define virt_to_page(addr) \
(mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
#define page_to_virt(page) \
((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
#define page_to_phys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT)
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
((void *)(kaddr) < (void *)memory_end))
#endif /* __ASSEMBLY__ */
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
#endif /* __ASM_OPENRISC_PAGE_H */
arch/openrisc/include/asm/param.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_PARAM_H
#define __ASM_OPENRISC_PARAM_H
#define EXEC_PAGESIZE 8192
#include <asm-generic/param.h>
#endif /* __ASM_OPENRISC_PARAM_H */
arch/openrisc/include/asm/pgalloc.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_PGALLOC_H
#define __ASM_OPENRISC_PGALLOC_H
#include <asm/page.h>
#include <linux/threads.h>
#include <linux/mm.h>
#include <linux/memblock.h>
#include <linux/bootmem.h>
extern int mem_init_done;
#define pmd_populate_kernel(mm, pmd, pte) \
set_pmd(pmd, __pmd(_KERNPG_TABLE + __pa(pte)))
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
struct page *pte)
{
set_pmd(pmd, __pmd(_KERNPG_TABLE +
((unsigned long)page_to_pfn(pte) <<
(unsigned long) PAGE_SHIFT)));
}
/*
* Allocate and free page tables.
*/
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
pgd_t *ret = (pgd_t *)__get_free_page(GFP_KERNEL);
if (ret) {
memset(ret, 0, USER_PTRS_PER_PGD * sizeof(pgd_t));
memcpy(ret + USER_PTRS_PER_PGD,
swapper_pg_dir + USER_PTRS_PER_PGD,
(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
}
return ret;
}
#if 0
/* FIXME: This seems to be the preferred style, but we are using
* current_pgd (from mm->pgd) to load kernel pages so we need it
* initialized. This needs to be looked into.
*/
extern inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
return (pgd_t *)get_zeroed_page(GFP_KERNEL);
}
#endif
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
free_page((unsigned long)pgd);
}
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address);
static inline struct page *pte_alloc_one(struct mm_struct *mm,
unsigned long address)
{
struct page *pte;
pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT, 0);
if (pte)
clear_page(page_address(pte));
return pte;
}
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
free_page((unsigned long)pte);
}
static inline void pte_free(struct mm_struct *mm, struct page *pte)
{
__free_page(pte);
}
#define __pte_free_tlb(tlb, pte, addr) tlb_remove_page((tlb), (pte))
#define pmd_pgtable(pmd) pmd_page(pmd)
#define check_pgt_cache() do { } while (0)
#endif
arch/openrisc/include/asm/pgtable.h 0 → 100644
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arch/openrisc/include/asm/processor.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_PROCESSOR_H
#define __ASM_OPENRISC_PROCESSOR_H
#include <asm/spr_defs.h>
#include <asm/page.h>
#include <asm/ptrace.h>
#define STACK_TOP TASK_SIZE
#define STACK_TOP_MAX STACK_TOP
/* Kernel and user SR register setting */
#define KERNEL_SR (SPR_SR_DME | SPR_SR_IME | SPR_SR_ICE \
| SPR_SR_DCE | SPR_SR_SM)
#define USER_SR (SPR_SR_DME | SPR_SR_IME | SPR_SR_ICE \
| SPR_SR_DCE | SPR_SR_IEE | SPR_SR_TEE)
/*
* Default implementation of macro that returns current
* instruction pointer ("program counter").
*/
#define current_text_addr() ({ __label__ _l; _l: &&_l; })
/*
* User space process size. This is hardcoded into a few places,
* so don't change it unless you know what you are doing.
*/
#define TASK_SIZE (0x80000000UL)
/* This decides where the kernel will search for a free chunk of vm
* space during mmap's.
*/
#define TASK_UNMAPPED_BASE (TASK_SIZE / 8 * 3)
#ifndef __ASSEMBLY__
struct task_struct;
struct thread_struct {
};
/*
* At user->kernel entry, the pt_regs struct is stacked on the top of the
* kernel-stack. This macro allows us to find those regs for a task.
* Notice that subsequent pt_regs stackings, like recursive interrupts
* occurring while we're in the kernel, won't affect this - only the first
* user->kernel transition registers are reached by this (i.e. not regs
* for running signal handler)
*/
#define user_regs(thread_info) (((struct pt_regs *)((unsigned long)(thread_info) + THREAD_SIZE - STACK_FRAME_OVERHEAD)) - 1)
/*
* Dito but for the currently running task
*/
#define task_pt_regs(task) user_regs(task_thread_info(task))
#define current_regs() user_regs(current_thread_info())
extern inline void prepare_to_copy(struct task_struct *tsk)
{
}
#define INIT_SP (sizeof(init_stack) + (unsigned long) &init_stack)
#define INIT_THREAD { }
#define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc);
#define KSTK_ESP(tsk) (task_pt_regs(tsk)->sp);
extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
void start_thread(struct pt_regs *regs, unsigned long nip, unsigned long sp);
void release_thread(struct task_struct *);
unsigned long get_wchan(struct task_struct *p);
/*
* Free current thread data structures etc..
*/
extern inline void exit_thread(void)
{
/* Nothing needs to be done. */
}
/*
* Return saved PC of a blocked thread. For now, this is the "user" PC
*/
extern unsigned long thread_saved_pc(struct task_struct *t);
#define init_stack (init_thread_union.stack)
#define cpu_relax() do { } while (0)
#endif /* __ASSEMBLY__ */
#endif /* __ASM_OPENRISC_PROCESSOR_H */
arch/openrisc/include/asm/prom.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/of.h> /* linux/of.h gets to determine #include ordering */
#ifndef _ASM_OPENRISC_PROM_H
#define _ASM_OPENRISC_PROM_H
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
#include <linux/types.h>
#include <asm/irq.h>
#include <linux/atomic.h>
#include <linux/of_irq.h>
#include <linux/of_fdt.h>
#include <linux/of_address.h>
#include <linux/proc_fs.h>
#include <linux/platform_device.h>
#define HAVE_ARCH_DEVTREE_FIXUPS
/* Other Prototypes */
extern int early_uartlite_console(void);
/* Parse the ibm,dma-window property of an OF node into the busno, phys and
* size parameters.
*/
void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop,
unsigned long *busno, unsigned long *phys, unsigned long *size);
extern void kdump_move_device_tree(void);
/* CPU OF node matching */
struct device_node *of_get_cpu_node(int cpu, unsigned int *thread);
/* Get the MAC address */
extern const void *of_get_mac_address(struct device_node *np);
/**
* of_irq_map_pci - Resolve the interrupt for a PCI device
* @pdev: the device whose interrupt is to be resolved
* @out_irq: structure of_irq filled by this function
*
* This function resolves the PCI interrupt for a given PCI device. If a
* device-node exists for a given pci_dev, it will use normal OF tree
* walking. If not, it will implement standard swizzling and walk up the
* PCI tree until an device-node is found, at which point it will finish
* resolving using the OF tree walking.
*/
struct pci_dev;
extern int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq);
/* This routine is here to provide compatibility with how powerpc
* handles IRQ mapping for OF device nodes. We precompute and permanently
* register them in the platform_device objects, whereas powerpc computes them
* on request.
*/
static inline void irq_dispose_mapping(unsigned int virq)
{
}
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_OPENRISC_PROM_H */
arch/openrisc/include/asm/ptrace.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_PTRACE_H
#define __ASM_OPENRISC_PTRACE_H
#include <asm/spr_defs.h>
#ifndef __ASSEMBLY__
/*
* This is the layout of the regset returned by the GETREGSET ptrace call
*/
struct user_regs_struct {
/* GPR R0-R31... */
unsigned long gpr[32];
unsigned long pc;
unsigned long sr;
unsigned long pad1;
unsigned long pad2;
};
#endif
#ifdef __KERNEL__
/*
* Make kernel PTrace/register structures opaque to userspace... userspace can
* access thread state via the regset mechanism. This allows us a bit of
* flexibility in how we order the registers on the stack, permitting some
* optimizations like packing call-clobbered registers together so that
* they share a cacheline (not done yet, though... future optimization).
*/
#ifndef __ASSEMBLY__
/*
* This struct describes how the registers are laid out on the kernel stack
* during a syscall or other kernel entry.
*
* This structure should always be cacheline aligned on the stack.
* FIXME: I don't think that's the case right now. The alignment is
* taken care of elsewhere... head.S, process.c, etc.
*/
struct pt_regs {
union {
struct {
/* Named registers */
long sr; /* Stored in place of r0 */
long sp; /* r1 */
};
struct {
/* Old style */
long offset[2];
long gprs[30];
};
struct {
/* New style */
long gpr[32];
};
};
long pc;
long orig_gpr11; /* For restarting system calls */
long syscallno; /* Syscall number (used by strace) */
long dummy; /* Cheap alignment fix */
};
#endif /* __ASSEMBLY__ */
/* TODO: Rename this to REDZONE because that's what it is */
#define STACK_FRAME_OVERHEAD 128 /* size of minimum stack frame */
#define instruction_pointer(regs) ((regs)->pc)
#define user_mode(regs) (((regs)->sr & SPR_SR_SM) == 0)
#define user_stack_pointer(regs) ((unsigned long)(regs)->sp)
#define profile_pc(regs) instruction_pointer(regs)
/*
* Offsets used by 'ptrace' system call interface.
*/
#define PT_SR 0
#define PT_SP 4
#define PT_GPR2 8
#define PT_GPR3 12
#define PT_GPR4 16
#define PT_GPR5 20
#define PT_GPR6 24
#define PT_GPR7 28
#define PT_GPR8 32
#define PT_GPR9 36
#define PT_GPR10 40
#define PT_GPR11 44
#define PT_GPR12 48
#define PT_GPR13 52
#define PT_GPR14 56
#define PT_GPR15 60
#define PT_GPR16 64
#define PT_GPR17 68
#define PT_GPR18 72
#define PT_GPR19 76
#define PT_GPR20 80
#define PT_GPR21 84
#define PT_GPR22 88
#define PT_GPR23 92
#define PT_GPR24 96
#define PT_GPR25 100
#define PT_GPR26 104
#define PT_GPR27 108
#define PT_GPR28 112
#define PT_GPR29 116
#define PT_GPR30 120
#define PT_GPR31 124
#define PT_PC 128
#define PT_ORIG_GPR11 132
#define PT_SYSCALLNO 136
#endif /* __KERNEL__ */
#endif /* __ASM_OPENRISC_PTRACE_H */
arch/openrisc/include/asm/serial.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_SERIAL_H
#define __ASM_OPENRISC_SERIAL_H
#ifdef __KERNEL__
#include <asm/cpuinfo.h>
/* There's a generic version of this file, but it assumes a 1.8MHz UART clk...
* this, on the other hand, assumes the UART clock is tied to the system
* clock... 8250_early.c (early 8250 serial console) actually uses this, so
* it needs to be correct to get the early console working.
*/
#define BASE_BAUD (cpuinfo.clock_frequency/16)
#endif /* __KERNEL__ */
#endif /* __ASM_OPENRISC_SERIAL_H */
arch/openrisc/include/asm/sigcontext.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_SIGCONTEXT_H
#define __ASM_OPENRISC_SIGCONTEXT_H
#include <asm/ptrace.h>
/* This struct is saved by setup_frame in signal.c, to keep the current
context while a signal handler is executed. It's restored by sys_sigreturn.
To keep things simple, we use pt_regs here even though normally you just
specify the list of regs to save. Then we can use copy_from_user on the
entire regs instead of a bunch of get_user's as well...
*/
struct sigcontext {
struct pt_regs regs; /* needs to be first */
unsigned long oldmask;
unsigned long usp; /* usp before stacking this gunk on it */
};
#endif /* __ASM_OPENRISC_SIGCONTEXT_H */
arch/openrisc/include/asm/spinlock.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_SPINLOCK_H
#define __ASM_OPENRISC_SPINLOCK_H
#error "or32 doesn't do SMP yet"
#endif
arch/openrisc/include/asm/spr.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_SPR_H
#define __ASM_OPENRISC_SPR_H
#define mtspr(_spr, _val) __asm__ __volatile__ ( \
"l.mtspr r0,%1,%0" \
: : "K" (_spr), "r" (_val))
#define mtspr_off(_spr, _off, _val) __asm__ __volatile__ ( \
"l.mtspr %0,%1,%2" \
: : "r" (_off), "r" (_val), "K" (_spr))
static inline unsigned long mfspr(unsigned long add)
{
unsigned long ret;
__asm__ __volatile__ ("l.mfspr %0,r0,%1" : "=r" (ret) : "K" (add));
return ret;
}
static inline unsigned long mfspr_off(unsigned long add, unsigned long offset)
{
unsigned long ret;
__asm__ __volatile__ ("l.mfspr %0,%1,%2" : "=r" (ret)
: "r" (offset), "K" (add));
return ret;
}
#endif
arch/openrisc/include/asm/spr_defs.h 0 → 100644
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This diff is collapsed.
arch/openrisc/include/asm/syscall.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_SYSCALL_H__
#define __ASM_OPENRISC_SYSCALL_H__
#include <linux/err.h>
#include <linux/sched.h>
static inline int
syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
{
return regs->syscallno ? regs->syscallno : -1;
}
static inline void
syscall_rollback(struct task_struct *task, struct pt_regs *regs)
{
regs->gpr[11] = regs->orig_gpr11;
}
static inline long
syscall_get_error(struct task_struct *task, struct pt_regs *regs)
{
return IS_ERR_VALUE(regs->gpr[11]) ? regs->gpr[11] : 0;
}
static inline long
syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
{
return regs->gpr[11];
}
static inline void
syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
int error, long val)
{
if (error)
regs->gpr[11] = -error;
else
regs->gpr[11] = val;
}
static inline void
syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
unsigned int i, unsigned int n, unsigned long *args)
{
BUG_ON(i + n > 6);
memcpy(args, &regs->gpr[3 + i], n * sizeof(args[0]));
}
static inline void
syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
unsigned int i, unsigned int n, const unsigned long *args)
{
BUG_ON(i + n > 6);
memcpy(&regs->gpr[3 + i], args, n * sizeof(args[0]));
}
#endif
arch/openrisc/include/asm/syscalls.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_SYSCALLS_H
#define __ASM_OPENRISC_SYSCALLS_H
asmlinkage long sys_or1k_atomic(unsigned long type, unsigned long *v1,
unsigned long *v2);
#include <asm-generic/syscalls.h>
#endif /* __ASM_OPENRISC_SYSCALLS_H */
arch/openrisc/include/asm/system.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_SYSTEM_H
#define __ASM_OPENRISC_SYSTEM_H
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
#include <asm/spr.h>
#include <asm-generic/system.h>
/* We probably need this definition, but the generic system.h provides it
* and it's not used on our arch anyway...
*/
/*#define nop() __asm__ __volatile__ ("l.nop"::)*/
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* __ASM_OPENRISC_SYSTEM_H */
arch/openrisc/include/asm/thread_info.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef _ASM_THREAD_INFO_H
#define _ASM_THREAD_INFO_H
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
#include <asm/types.h>
#include <asm/processor.h>
#endif
/* THREAD_SIZE is the size of the task_struct/kernel_stack combo.
* normally, the stack is found by doing something like p + THREAD_SIZE
* in or32, a page is 8192 bytes, which seems like a sane size
*/
#define THREAD_SIZE_ORDER 0
#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
/*
* low level task data that entry.S needs immediate access to
* - this struct should fit entirely inside of one cache line
* - this struct shares the supervisor stack pages
* - if the contents of this structure are changed, the assembly constants
* must also be changed
*/
#ifndef __ASSEMBLY__
typedef unsigned long mm_segment_t;
struct thread_info {
struct task_struct *task; /* main task structure */
struct exec_domain *exec_domain; /* execution domain */
unsigned long flags; /* low level flags */
__u32 cpu; /* current CPU */
__s32 preempt_count; /* 0 => preemptable, <0 => BUG */
mm_segment_t addr_limit; /* thread address space:
0-0x7FFFFFFF for user-thead
0-0xFFFFFFFF for kernel-thread
*/
struct restart_block restart_block;
__u8 supervisor_stack[0];
/* saved context data */
unsigned long ksp;
};
#endif
/*
* macros/functions for gaining access to the thread information structure
*
* preempt_count needs to be 1 initially, until the scheduler is functional.
*/
#ifndef __ASSEMBLY__
#define INIT_THREAD_INFO(tsk) \
{ \
.task = &tsk, \
.exec_domain = &default_exec_domain, \
.flags = 0, \
.cpu = 0, \
.preempt_count = 1, \
.addr_limit = KERNEL_DS, \
.restart_block = { \
.fn = do_no_restart_syscall, \
}, \
.ksp = 0, \
}
#define init_thread_info (init_thread_union.thread_info)
/* how to get the thread information struct from C */
register struct thread_info *current_thread_info_reg asm("r10");
#define current_thread_info() (current_thread_info_reg)
#define get_thread_info(ti) get_task_struct((ti)->task)
#define put_thread_info(ti) put_task_struct((ti)->task)
#endif /* !__ASSEMBLY__ */
/*
* thread information flags
* these are process state flags that various assembly files may need to
* access
* - pending work-to-be-done flags are in LSW
* - other flags in MSW
*/
#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
#define TIF_NOTIFY_RESUME 1 /* resumption notification requested */
#define TIF_SIGPENDING 2 /* signal pending */
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
#define TIF_SINGLESTEP 4 /* restore singlestep on return to user
* mode
*/
#define TIF_SYSCALL_TRACEPOINT 8 /* for ftrace syscall instrumentation */
#define TIF_RESTORE_SIGMASK 9
#define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling * TIF_NEED_RESCHED
*/
#define TIF_MEMDIE 17
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
/* Work to do when returning from interrupt/exception */
/* For OpenRISC, this is anything in the LSW other than syscall trace */
#define _TIF_WORK_MASK (0xff & ~(_TIF_SYSCALL_TRACE|_TIF_SINGLESTEP))
#endif /* __KERNEL__ */
#endif /* _ASM_THREAD_INFO_H */
arch/openrisc/include/asm/timex.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_TIMEX_H
#define __ASM_OPENRISC_TIMEX_H
#define get_cycles get_cycles
#include <asm-generic/timex.h>
#include <asm/spr.h>
#include <asm/spr_defs.h>
static inline cycles_t get_cycles(void)
{
return mfspr(SPR_TTCR);
}
/* This isn't really used any more */
#define CLOCK_TICK_RATE 1000
#define ARCH_HAS_READ_CURRENT_TIMER
#endif
arch/openrisc/include/asm/tlb.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_TLB_H__
#define __ASM_OPENRISC_TLB_H__
/*
* or32 doesn't need any special per-pte or
* per-vma handling..
*/
#define tlb_start_vma(tlb, vma) do { } while (0)
#define tlb_end_vma(tlb, vma) do { } while (0)
#define __tlb_remove_tlb_entry(tlb, ptep, address) do { } while (0)
#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
#include <linux/pagemap.h>
#include <asm-generic/tlb.h>
#endif /* __ASM_OPENRISC_TLB_H__ */
arch/openrisc/include/asm/tlbflush.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_TLBFLUSH_H
#define __ASM_OPENRISC_TLBFLUSH_H
#include <linux/mm.h>
#include <asm/processor.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
#include <asm/current.h>
#include <linux/sched.h>
/*
* - flush_tlb() flushes the current mm struct TLBs
* - flush_tlb_all() flushes all processes TLBs
* - flush_tlb_mm(mm) flushes the specified mm context TLB's
* - flush_tlb_page(vma, vmaddr) flushes one page
* - flush_tlb_range(mm, start, end) flushes a range of pages
*/
void flush_tlb_all(void);
void flush_tlb_mm(struct mm_struct *mm);
void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr);
void flush_tlb_range(struct vm_area_struct *vma,
unsigned long start,
unsigned long end);
static inline void flush_tlb(void)
{
flush_tlb_mm(current->mm);
}
static inline void flush_tlb_kernel_range(unsigned long start,
unsigned long end)
{
flush_tlb_range(NULL, start, end);
}
#endif /* __ASM_OPENRISC_TLBFLUSH_H */
arch/openrisc/include/asm/uaccess.h 0 → 100644
View file @ ff0c4ad2
This diff is collapsed.
arch/openrisc/include/asm/unaligned.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __ASM_OPENRISC_UNALIGNED_H
#define __ASM_OPENRISC_UNALIGNED_H
/*
* This is copied from the generic implementation and the C-struct
* variant replaced with the memmove variant. The GCC compiler
* for the OR32 arch optimizes too aggressively for the C-struct
* variant to work, so use the memmove variant instead.
*
* It may be worth considering implementing the unaligned access
* exception handler and allowing unaligned accesses (access_ok.h)...
* not sure if it would be much of a performance win without further
* investigation.
*/
#include <asm/byteorder.h>
#if defined(__LITTLE_ENDIAN)
# include <linux/unaligned/le_memmove.h>
# include <linux/unaligned/be_byteshift.h>
# include <linux/unaligned/generic.h>
# define get_unaligned __get_unaligned_le
# define put_unaligned __put_unaligned_le
#elif defined(__BIG_ENDIAN)
# include <linux/unaligned/be_memmove.h>
# include <linux/unaligned/le_byteshift.h>
# include <linux/unaligned/generic.h>
# define get_unaligned __get_unaligned_be
# define put_unaligned __put_unaligned_be
#else
# error need to define endianess
#endif
#endif /* __ASM_OPENRISC_UNALIGNED_H */
arch/openrisc/include/asm/unistd.h 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#if !defined(__ASM_OPENRISC_UNISTD_H) || defined(__SYSCALL)
#define __ASM_OPENRISC_UNISTD_H
#define __ARCH_HAVE_MMU
#define sys_mmap2 sys_mmap_pgoff
#include <asm-generic/unistd.h>
#define __NR_or1k_atomic __NR_arch_specific_syscall
__SYSCALL(__NR_or1k_atomic, sys_or1k_atomic)
#endif /* __ASM_OPENRISC_UNISTD_H */
arch/openrisc/kernel/Makefile 0 → 100644
View file @ ff0c4ad2
#
# Makefile for the linux kernel.
#
extra-y := head.o vmlinux.lds init_task.o
obj-y := setup.o idle.o or32_ksyms.o process.o dma.o \
traps.o time.o irq.o entry.o ptrace.o signal.o sys_or32.o \
sys_call_table.o
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_OF) += prom.o
clean:
arch/openrisc/kernel/asm-offsets.c 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC asm-offsets.c
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* Modifications for the OpenRISC architecture:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* This program is used to generate definitions needed by
* assembly language modules.
*
* We use the technique used in the OSF Mach kernel code:
* generate asm statements containing #defines,
* compile this file to assembler, and then extract the
* #defines from the assembly-language output.
*/
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/ptrace.h>
#include <linux/mman.h>
#include <linux/mm.h>
#include <linux/io.h>
#include <linux/thread_info.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#define DEFINE(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
#define BLANK() asm volatile("\n->" : : )
int main(void)
{
/* offsets into the task_struct */
DEFINE(TASK_STATE, offsetof(struct task_struct, state));
DEFINE(TASK_FLAGS, offsetof(struct task_struct, flags));
DEFINE(TASK_PTRACE, offsetof(struct task_struct, ptrace));
DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
DEFINE(TASK_MM, offsetof(struct task_struct, mm));
DEFINE(TASK_ACTIVE_MM, offsetof(struct task_struct, active_mm));
/* offsets into thread_info */
DEFINE(TI_TASK, offsetof(struct thread_info, task));
DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
DEFINE(TI_KSP, offsetof(struct thread_info, ksp));
DEFINE(PT_SIZE, sizeof(struct pt_regs));
/* Interrupt register frame */
DEFINE(STACK_FRAME_OVERHEAD, STACK_FRAME_OVERHEAD);
DEFINE(INT_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs));
DEFINE(NUM_USER_SEGMENTS, TASK_SIZE >> 28);
return 0;
}
arch/openrisc/kernel/dma.c 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* Modifications for the OpenRISC architecture:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* DMA mapping callbacks...
* As alloc_coherent is the only DMA callback being used currently, that's
* the only thing implemented properly. The rest need looking into...
*/
#include <linux/dma-mapping.h>
#include <linux/dma-debug.h>
#include <asm/cpuinfo.h>
#include <asm/spr_defs.h>
#include <asm/tlbflush.h>
static int page_set_nocache(pte_t *pte, unsigned long addr,
unsigned long next, struct mm_walk *walk)
{
unsigned long cl;
pte_val(*pte) |= _PAGE_CI;
/*
* Flush the page out of the TLB so that the new page flags get
* picked up next time there's an access
*/
flush_tlb_page(NULL, addr);
/* Flush page out of dcache */
for (cl = __pa(addr); cl < __pa(next); cl += cpuinfo.dcache_block_size)
mtspr(SPR_DCBFR, cl);
return 0;
}
static int page_clear_nocache(pte_t *pte, unsigned long addr,
unsigned long next, struct mm_walk *walk)
{
pte_val(*pte) &= ~_PAGE_CI;
/*
* Flush the page out of the TLB so that the new page flags get
* picked up next time there's an access
*/
flush_tlb_page(NULL, addr);
return 0;
}
/*
* Alloc "coherent" memory, which for OpenRISC means simply uncached.
*
* This function effectively just calls __get_free_pages, sets the
* cache-inhibit bit on those pages, and makes sure that the pages are
* flushed out of the cache before they are used.
*
*/
void *or1k_dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp)
{
unsigned long va;
void *page;
struct mm_walk walk = {
.pte_entry = page_set_nocache,
.mm = &init_mm
};
page = alloc_pages_exact(size, gfp);
if (!page)
return NULL;
/* This gives us the real physical address of the first page. */
*dma_handle = __pa(page);
va = (unsigned long)page;
/*
* We need to iterate through the pages, clearing the dcache for
* them and setting the cache-inhibit bit.
*/
if (walk_page_range(va, va + size, &walk)) {
free_pages_exact(page, size);
return NULL;
}
return (void *)va;
}
void or1k_dma_free_coherent(struct device *dev, size_t size, void *vaddr,
dma_addr_t dma_handle)
{
unsigned long va = (unsigned long)vaddr;
struct mm_walk walk = {
.pte_entry = page_clear_nocache,
.mm = &init_mm
};
/* walk_page_range shouldn't be able to fail here */
WARN_ON(walk_page_range(va, va + size, &walk));
free_pages_exact(vaddr, size);
}
dma_addr_t or1k_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction dir,
struct dma_attrs *attrs)
{
unsigned long cl;
dma_addr_t addr = page_to_phys(page) + offset;
switch (dir) {
case DMA_TO_DEVICE:
/* Flush the dcache for the requested range */
for (cl = addr; cl < addr + size;
cl += cpuinfo.dcache_block_size)
mtspr(SPR_DCBFR, cl);
break;
case DMA_FROM_DEVICE:
/* Invalidate the dcache for the requested range */
for (cl = addr; cl < addr + size;
cl += cpuinfo.dcache_block_size)
mtspr(SPR_DCBIR, cl);
break;
default:
/*
* NOTE: If dir == DMA_BIDIRECTIONAL then there's no need to
* flush nor invalidate the cache here as the area will need
* to be manually synced anyway.
*/
break;
}
return addr;
}
void or1k_unmap_page(struct device *dev, dma_addr_t dma_handle,
size_t size, enum dma_data_direction dir,
struct dma_attrs *attrs)
{
/* Nothing special to do here... */
}
void or1k_sync_single_for_cpu(struct device *dev,
dma_addr_t dma_handle, size_t size,
enum dma_data_direction dir)
{
unsigned long cl;
dma_addr_t addr = dma_handle;
/* Invalidate the dcache for the requested range */
for (cl = addr; cl < addr + size; cl += cpuinfo.dcache_block_size)
mtspr(SPR_DCBIR, cl);
}
void or1k_sync_single_for_device(struct device *dev,
dma_addr_t dma_handle, size_t size,
enum dma_data_direction dir)
{
unsigned long cl;
dma_addr_t addr = dma_handle;
/* Flush the dcache for the requested range */
for (cl = addr; cl < addr + size; cl += cpuinfo.dcache_block_size)
mtspr(SPR_DCBFR, cl);
}
/* Number of entries preallocated for DMA-API debugging */
#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16)
static int __init dma_init(void)
{
dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
return 0;
}
fs_initcall(dma_init);
arch/openrisc/kernel/entry.S 0 → 100644
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arch/openrisc/kernel/head.S 0 → 100644
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This diff is collapsed.
arch/openrisc/kernel/idle.c 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC idle.c
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* Modifications for the OpenRISC architecture:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Idle daemon for or32. Idle daemon will handle any action
* that needs to be taken when the system becomes idle.
*/
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/tick.h>
#include <asm/pgtable.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/processor.h>
#include <asm/mmu.h>
#include <asm/cache.h>
#include <asm/pgalloc.h>
void (*powersave) (void) = NULL;
static inline void pm_idle(void)
{
barrier();
}
void cpu_idle(void)
{
set_thread_flag(TIF_POLLING_NRFLAG);
/* endless idle loop with no priority at all */
while (1) {
tick_nohz_stop_sched_tick(1);
while (!need_resched()) {
check_pgt_cache();
rmb();
clear_thread_flag(TIF_POLLING_NRFLAG);
local_irq_disable();
/* Don't trace irqs off for idle */
stop_critical_timings();
if (!need_resched() && powersave != NULL)
powersave();
start_critical_timings();
local_irq_enable();
set_thread_flag(TIF_POLLING_NRFLAG);
}
tick_nohz_restart_sched_tick();
preempt_enable_no_resched();
schedule();
preempt_disable();
}
}
arch/openrisc/kernel/init_task.c 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC init_task.c
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* Modifications for the OpenRISC architecture:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/init_task.h>
#include <linux/mqueue.h>
static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
/*
* Initial thread structure.
*
* We need to make sure that this is THREAD_SIZE aligned due to the
* way process stacks are handled. This is done by having a special
* "init_task" linker map entry..
*/
union thread_union init_thread_union __init_task_data = {
INIT_THREAD_INFO(init_task)
};
/*
* Initial task structure.
*
* All other task structs will be allocated on slabs in fork.c
*/
struct task_struct init_task = INIT_TASK(init_task);
EXPORT_SYMBOL(init_task);
arch/openrisc/kernel/irq.c 0 → 100644
View file @ ff0c4ad2
/*
* OpenRISC irq.c
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* Modifications for the OpenRISC architecture:
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/ptrace.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/of.h>
#include <linux/ftrace.h>
#include <linux/irq.h>
#include <linux/seq_file.h>
#include <linux/kernel_stat.h>
#include <linux/irqflags.h>
/* read interrupt enabled status */
unsigned long arch_local_save_flags(void)
{
return mfspr(SPR_SR) & (SPR_SR_IEE|SPR_SR_TEE);
}
EXPORT_SYMBOL(arch_local_save_flags);
/* set interrupt enabled status */
void arch_local_irq_restore(unsigned long flags)
{
mtspr(SPR_SR, ((mfspr(SPR_SR) & ~(SPR_SR_IEE|SPR_SR_TEE)) | flags));
}
EXPORT_SYMBOL(arch_local_irq_restore);
/* OR1K PIC implementation */
/* We're a couple of cycles faster than the generic implementations with
* these 'fast' versions.
*/
static void or1k_pic_mask(struct irq_data *data)
{
mtspr(SPR_PICMR, mfspr(SPR_PICMR) & ~(1UL << data->irq));
}
static void or1k_pic_unmask(struct irq_data *data)
{
mtspr(SPR_PICMR, mfspr(SPR_PICMR) | (1UL << data->irq));
}
static void or1k_pic_ack(struct irq_data *data)
{
/* EDGE-triggered interrupts need to be ack'ed in order to clear
* the latch.
* LEVER-triggered interrupts do not need to be ack'ed; however,
* ack'ing the interrupt has no ill-effect and is quicker than
* trying to figure out what type it is...
*/
/* The OpenRISC 1000 spec says to write a 1 to the bit to ack the
* interrupt, but the OR1200 does this backwards and requires a 0
* to be written...
*/
#ifdef CONFIG_OR1K_1200
/* There are two oddities with the OR1200 PIC implementation:
* i) LEVEL-triggered interrupts are latched and need to be cleared
* ii) the interrupt latch is cleared by writing a 0 to the bit,
* as opposed to a 1 as mandated by the spec
*/
mtspr(SPR_PICSR, mfspr(SPR_PICSR) & ~(1UL << data->irq));
#else
WARN(1, "Interrupt handling possibily broken\n");
mtspr(SPR_PICSR, (1UL << irq));
#endif
}
static void or1k_pic_mask_ack(struct irq_data *data)
{
/* Comments for pic_ack apply here, too */
#ifdef CONFIG_OR1K_1200
mtspr(SPR_PICSR, mfspr(SPR_PICSR) & ~(1UL << data->irq));
#else
WARN(1, "Interrupt handling possibily broken\n");
mtspr(SPR_PICSR, (1UL << irq));
#endif
}
static int or1k_pic_set_type(struct irq_data *data, unsigned int flow_type)
{
/* There's nothing to do in the PIC configuration when changing
* flow type. Level and edge-triggered interrupts are both
* supported, but it's PIC-implementation specific which type
* is handled. */
return irq_setup_alt_chip(data, flow_type);
}
static inline int pic_get_irq(int first)
{
int irq;
irq = ffs(mfspr(SPR_PICSR) >> first);
return irq ? irq + first - 1 : NO_IRQ;
}
static void __init or1k_irq_init(void)
{
struct irq_chip_generic *gc;
struct irq_chip_type *ct;
/* Disable all interrupts until explicitly requested */
mtspr(SPR_PICMR, (0UL));
gc = irq_alloc_generic_chip("or1k-PIC", 1, 0, 0, handle_level_irq);
ct = gc->chip_types;
ct->chip.irq_unmask = or1k_pic_unmask;
ct->chip.irq_mask = or1k_pic_mask;
ct->chip.irq_ack = or1k_pic_ack;
ct->chip.irq_mask_ack = or1k_pic_mask_ack;
ct->chip.irq_set_type = or1k_pic_set_type;
/* The OR1K PIC can handle both level and edge trigged
* interrupts in roughly the same manner
*/
#if 0
/* FIXME: chip.type??? */
ct->chip.type = IRQ_TYPE_EDGE_BOTH | IRQ_TYPE_LEVEL_MASK;
#endif
irq_setup_generic_chip(gc, IRQ_MSK(NR_IRQS), 0,
IRQ_NOREQUEST, IRQ_LEVEL | IRQ_NOPROBE);
}
void __init init_IRQ(void)
{
or1k_irq_init();
}
void __irq_entry do_IRQ(struct pt_regs *regs)
{
int irq = -1;
struct pt_regs *old_regs = set_irq_regs(regs);
irq_enter();
while ((irq = pic_get_irq(irq + 1)) != NO_IRQ)
generic_handle_irq(irq);
irq_exit();
set_irq_regs(old_regs);
}
unsigned int irq_create_of_mapping(struct device_node *controller,
const u32 *intspec, unsigned int intsize)
{
return intspec[0];
}
EXPORT_SYMBOL_GPL(irq_create_of_mapping);
arch/openrisc/kernel/module.c 0 → 100644
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/*
* OpenRISC module.c
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* Modifications for the OpenRISC architecture:
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/moduleloader.h>
#include <linux/elf.h>
int apply_relocate_add(Elf32_Shdr *sechdrs,
const char *strtab,
unsigned int symindex,
unsigned int relsec,
struct module *me)
{
unsigned int i;
Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr;
Elf32_Sym *sym;
uint32_t *location;
uint32_t value;
pr_debug("Applying relocate section %u to %u\n", relsec,
sechdrs[relsec].sh_info);
for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
/* This is where to make the change */
location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
+ rel[i].r_offset;
/* This is the symbol it is referring to. Note that all
undefined symbols have been resolved. */
sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
+ ELF32_R_SYM(rel[i].r_info);
value = sym->st_value + rel[i].r_addend;
switch (ELF32_R_TYPE(rel[i].r_info)) {
case R_OR32_32:
*location = value;
break;
case R_OR32_CONST:
location = (uint16_t *)location + 1;
*((uint16_t *)location) = (uint16_t) (value);
break;
case R_OR32_CONSTH:
location = (uint16_t *)location + 1;
*((uint16_t *)location) = (uint16_t) (value >> 16);
break;
case R_OR32_JUMPTARG:
value -= (uint32_t)location;
value >>= 2;
value &= 0x03ffffff;
value |= *location & 0xfc000000;
*location = value;
break;
default:
pr_err("module %s: Unknown relocation: %u\n",
me->name, ELF32_R_TYPE(rel[i].r_info));
break;
}
}
return 0;
}
arch/openrisc/kernel/or32_ksyms.c 0 → 100644
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/*
* OpenRISC or32_ksyms.c
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* Modifications for the OpenRISC architecture:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/module.h>
#include <linux/elfcore.h>
#include <linux/sched.h>
#include <linux/in6.h>
#include <linux/interrupt.h>
#include <linux/vmalloc.h>
#include <linux/semaphore.h>
#include <asm/processor.h>
#include <asm/uaccess.h>
#include <asm/checksum.h>
#include <asm/io.h>
#include <asm/hardirq.h>
#include <asm/delay.h>
#include <asm/pgalloc.h>
#define DECLARE_EXPORT(name) extern void name(void); EXPORT_SYMBOL(name)
/* compiler generated symbols */
DECLARE_EXPORT(__udivsi3);
DECLARE_EXPORT(__divsi3);
DECLARE_EXPORT(__umodsi3);
DECLARE_EXPORT(__modsi3);
DECLARE_EXPORT(__muldi3);
DECLARE_EXPORT(__ashrdi3);
DECLARE_EXPORT(__ashldi3);
DECLARE_EXPORT(__lshrdi3);
EXPORT_SYMBOL(__copy_tofrom_user);
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/*
* OpenRISC prom.c
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* Modifications for the OpenRISC architecture:
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Architecture specific procedures for creating, accessing and
* interpreting the device tree.
*
*/
#include <stdarg.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/threads.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/stringify.h>
#include <linux/delay.h>
#include <linux/initrd.h>
#include <linux/bitops.h>
#include <linux/module.h>
#include <linux/kexec.h>
#include <linux/debugfs.h>
#include <linux/irq.h>
#include <linux/memblock.h>
#include <linux/of_fdt.h>
#include <asm/prom.h>
#include <asm/page.h>
#include <asm/processor.h>
#include <asm/irq.h>
#include <linux/io.h>
#include <asm/system.h>
#include <asm/mmu.h>
#include <asm/pgtable.h>
#include <asm/sections.h>
#include <asm/setup.h>
extern char cmd_line[COMMAND_LINE_SIZE];
void __init early_init_dt_add_memory_arch(u64 base, u64 size)
{
size &= PAGE_MASK;
memblock_add(base, size);
}
void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
{
return __va(memblock_alloc(size, align));
}
void __init early_init_devtree(void *params)
{
void *alloc;
/* Setup flat device-tree pointer */
initial_boot_params = params;
/* Retrieve various informations from the /chosen node of the
* device-tree, including the platform type, initrd location and
* size, TCE reserve, and more ...
*/
of_scan_flat_dt(early_init_dt_scan_chosen, cmd_line);
/* Scan memory nodes and rebuild MEMBLOCKs */
memblock_init();
of_scan_flat_dt(early_init_dt_scan_root, NULL);
of_scan_flat_dt(early_init_dt_scan_memory, NULL);
/* Save command line for /proc/cmdline and then parse parameters */
strlcpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE);
memblock_analyze();
/* We must copy the flattend device tree from init memory to regular
* memory because the device tree references the strings in it
* directly.
*/
alloc = __va(memblock_alloc(initial_boot_params->totalsize, PAGE_SIZE));
memcpy(alloc, initial_boot_params, initial_boot_params->totalsize);
initial_boot_params = alloc;
}
#ifdef CONFIG_BLK_DEV_INITRD
void __init early_init_dt_setup_initrd_arch(unsigned long start,
unsigned long end)
{
initrd_start = (unsigned long)__va(start);
initrd_end = (unsigned long)__va(end);
initrd_below_start_ok = 1;
}
#endif
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arch/openrisc/kernel/sys_call_table.c 0 → 100644
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/*
* OpenRISC sys_call_table.c
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* Modifications for the OpenRISC architecture:
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/syscalls.h>
#include <linux/signal.h>
#include <linux/unistd.h>
#include <asm/syscalls.h>
#undef __SYSCALL
#define __SYSCALL(nr, call) [nr] = (call),
void *sys_call_table[__NR_syscalls] = {
#include <asm/unistd.h>
};
arch/openrisc/kernel/sys_or32.c 0 → 100644
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arch/openrisc/kernel/vmlinux.h 0 → 100644
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#ifndef __OPENRISC_VMLINUX_H_
#define __OPENRISC_VMLINUX_H_
extern char _stext, _etext, _edata, _end;
#ifdef CONFIG_BLK_DEV_INITRD
extern char __initrd_start, __initrd_end;
extern char __initramfs_start;
#endif
extern u32 __dtb_start[];
#endif
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arch/sh/include/asm/delay.h
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arch/x86/include/asm/delay.h
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include/asm-generic/delay.h
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include/asm-generic/io.h
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include/asm-generic/iomap.h
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lib/iomap.c
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