Commit e95bf452 authored by Richard Kuo's avatar Richard Kuo Committed by Linus Torvalds

Hexagon: Add configuration and makefiles for the Hexagon architecture.

Signed-off-by: default avatarLinas Vepstas <linas@codeaurora.org>
Signed-off-by: default avatarRichard Kuo <rkuo@codeaurora.org>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 60e13231
# Hexagon configuration
comment "Linux Kernel Configuration for Hexagon"
config HEXAGON
def_bool y
select HAVE_OPROFILE
select USE_GENERIC_SMP_HELPERS if SMP
# Other pending projects/to-do items.
# select HAVE_REGS_AND_STACK_ACCESS_API
# select HAVE_HW_BREAKPOINT if PERF_EVENTS
# select ARCH_HAS_CPU_IDLE_WAIT
# select ARCH_WANT_OPTIONAL_GPIOLIB
# select ARCH_REQUIRE_GPIOLIB
# select HAVE_CLK
# select IRQ_PER_CPU
select HAVE_IRQ_WORK
# select GENERIC_PENDING_IRQ if SMP
select GENERIC_ATOMIC64
select HAVE_PERF_EVENTS
select HAVE_GENERIC_HARDIRQS
select GENERIC_HARDIRQS_NO__DO_IRQ
select GENERIC_HARDIRQS_NO_DEPRECATED
# GENERIC_ALLOCATOR is used by dma_alloc_coherent()
select GENERIC_ALLOCATOR
select GENERIC_IRQ_SHOW
select HAVE_ARCH_KGDB
select HAVE_ARCH_TRACEHOOK
select NO_IOPORT
# mostly generic routines, with some accelerated ones
---help---
Qualcomm Hexagon is a processor architecture designed for high
performance and low power across a wide variety of applications.
config HEXAGON_ARCH_V1
bool
config HEXAGON_ARCH_V2
bool
config HEXAGON_ARCH_V3
bool
config HEXAGON_ARCH_V4
bool
config FRAME_POINTER
def_bool y
config LOCKDEP_SUPPORT
def_bool y
config PCI
def_bool n
config EARLY_PRINTK
def_bool y
config KTIME_SCALAR
def_bool y
config MMU
def_bool y
config TRACE_IRQFLAGS_SUPPORT
def_bool y
config GENERIC_CSUM
def_bool y
#
# Use the generic interrupt handling code in kernel/irq/:
#
config GENERIC_IRQ_PROBE
def_bool y
config GENERIC_IOMAP
def_bool y
#config ZONE_DMA
# bool
# default y
config HAS_DMA
bool
select HAVE_DMA_ATTRS
default y
config NEED_SG_DMA_LENGTH
def_bool y
config RWSEM_GENERIC_SPINLOCK
def_bool n
config RWSEM_XCHGADD_ALGORITHM
def_bool y
config GENERIC_FIND_NEXT_BIT
def_bool y
config GENERIC_HWEIGHT
def_bool y
config GENERIC_TIME
def_bool y
config GENERIC_CLOCKEVENTS
def_bool y
config GENERIC_CLOCKEVENTS_BROADCAST
def_bool y
config STACKTRACE_SUPPORT
def_bool y
select STACKTRACE
config GENERIC_BUG
def_bool y
depends on BUG
config BUG
def_bool y
menu "Machine selection"
choice
prompt "System type"
default HEXAGON_ARCH_V2
config HEXAGON_COMET
bool "Comet Board"
select HEXAGON_ARCH_V2
---help---
Support for the Comet platform.
endchoice
config HEXAGON_VM
def_bool y
config CMDLINE
string "Default kernel command string"
default ""
help
On some platforms, there is currently no way for the boot loader
to pass arguments to the kernel. For these, you should supply some
command-line options at build time by entering them here. At a
minimum, you should specify the memory size and the root device
(e.g., mem=64M root=/dev/nfs).
config HEXAGON_ANGEL_TRAPS
bool "Use Angel Traps"
default n
---help---
Enable angel debug traps (for printk's).
config SMP
bool "Multi-Processing support"
---help---
Enables SMP support in the kernel. If unsure, say "Y"
config NR_CPUS
int "Maximum number of CPUs" if SMP
range 2 6 if SMP
default "1" if !SMP
default "6" if SMP
---help---
This allows you to specify the maximum number of CPUs which this
kernel will support. The maximum supported value is 6 and the
minimum value which makes sense is 2.
This is purely to save memory - each supported CPU adds
approximately eight kilobytes to the kernel image.
choice
prompt "Kernel page size"
default PAGE_SIZE_4KB
---help---
Changes the default page size; use with caution.
config PAGE_SIZE_4KB
bool "4KB"
config PAGE_SIZE_16KB
bool "16KB"
config PAGE_SIZE_64KB
bool "64KB"
config PAGE_SIZE_256KB
bool "256KB"
endchoice
source "mm/Kconfig"
source "kernel/Kconfig.hz"
source "kernel/time/Kconfig"
config GENERIC_GPIO
bool "Generic GPIO support"
default n
endmenu
source "init/Kconfig"
source "drivers/Kconfig"
source "fs/Kconfig"
menu "Executable File Formats"
source "fs/Kconfig.binfmt"
endmenu
source "net/Kconfig"
source "security/Kconfig"
source "crypto/Kconfig"
source "lib/Kconfig"
menu "Kernel hacking"
source "lib/Kconfig.debug"
endmenu
# Makefile for the Hexagon arch
KBUILD_DEFCONFIG = comet_defconfig
# Do not use GP-relative jumps
KBUILD_CFLAGS += -G0
LDFLAGS_vmlinux += -G0
# Do not use single-byte enums; these will overflow.
KBUILD_CFLAGS += -fno-short-enums
# Modules must use either long-calls, or use pic/plt.
# Use long-calls for now, it's easier. And faster.
# CFLAGS_MODULE += -fPIC
# LDFLAGS_MODULE += -shared
CFLAGS_MODULE += -mlong-calls
cflags-$(CONFIG_HEXAGON_ARCH_V1) += $(call cc-option,-mv1)
cflags-$(CONFIG_HEXAGON_ARCH_V2) += $(call cc-option,-mv2)
cflags-$(CONFIG_HEXAGON_ARCH_V3) += $(call cc-option,-mv3)
cflags-$(CONFIG_HEXAGON_ARCH_V4) += $(call cc-option,-mv4)
aflags-$(CONFIG_HEXAGON_ARCH_V1) += $(call cc-option,-mv1)
aflags-$(CONFIG_HEXAGON_ARCH_V2) += $(call cc-option,-mv2)
aflags-$(CONFIG_HEXAGON_ARCH_V3) += $(call cc-option,-mv3)
aflags-$(CONFIG_HEXAGON_ARCH_V4) += $(call cc-option,-mv4)
ldflags-$(CONFIG_HEXAGON_ARCH_V1) += $(call cc-option,-mv1)
ldflags-$(CONFIG_HEXAGON_ARCH_V2) += $(call cc-option,-mv2)
ldflags-$(CONFIG_HEXAGON_ARCH_V3) += $(call cc-option,-mv3)
ldflags-$(CONFIG_HEXAGON_ARCH_V4) += $(call cc-option,-mv4)
KBUILD_CFLAGS += $(cflags-y)
KBUILD_AFLAGS += $(aflags-y)
# no KBUILD_LDFLAGS?
LDFLAGS += $(ldflags-y)
# Thread-info register will be r19. This value is not configureable;
# it is hard-coded in several files.
TIR_NAME := r19
KBUILD_CFLAGS += -ffixed-$(TIR_NAME) -DTHREADINFO_REG=$(TIR_NAME) -D__linux__
KBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME)
LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
libs-y += $(LIBGCC)
head-y := arch/hexagon/kernel/head.o \
arch/hexagon/kernel/init_task.o
core-y += arch/hexagon/kernel/ \
arch/hexagon/mm/ \
arch/hexagon/lib/
# arch/hexagon/platform/common/
#
#core-$(CONFIG_HEXAGON_COMET) += arch/hexagon/platform/comet/
#machine-$(CONFIG_HEXAGON_COMET) := comet
extra-y := head.o vmlinux.lds init_task.o
obj-$(CONFIG_SMP) += smp.o topology.o
obj-y += setup.o irq_cpu.o traps.o syscalltab.o signal.o time.o
obj-y += process.o syscall.o trampoline.o reset.o ptrace.o
obj-y += vdso.o
obj-$(CONFIG_KGDB) += kgdb.o
obj-$(CONFIG_MODULES) += module.o hexagon_ksyms.o
# Modules required to work with the Hexagon Virtual Machine
obj-y += vm_entry.o vm_events.o vm_switch.o vm_ops.o vm_init_segtable.o
obj-y += vm_vectors.o
obj-$(CONFIG_HAS_DMA) += dma.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
/*
* Copyright (C) 1996 David S. Miller
* Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003 Ralf Baechle
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
* Kevin Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
* Copyright (C) 2000 MIPS Technologies, Inc.
*
* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include <linux/compat.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/kbuild.h>
#include <asm/ptrace.h>
#include <asm/processor.h>
/* This file is used to produce asm/linkerscript constants from header
files typically used in c. Specifically, it generates asm-offsets.h */
int main(void)
{
COMMENT("This is a comment.");
/* might get these from somewhere else. */
DEFINE(_PAGE_SIZE, PAGE_SIZE);
DEFINE(_PAGE_SHIFT, PAGE_SHIFT);
BLANK();
COMMENT("Hexagon pt_regs definitions");
OFFSET(_PT_SYSCALL_NR, pt_regs, syscall_nr);
OFFSET(_PT_UGPGP, pt_regs, ugpgp);
OFFSET(_PT_R3130, pt_regs, r3130);
OFFSET(_PT_R2928, pt_regs, r2928);
OFFSET(_PT_R2726, pt_regs, r2726);
OFFSET(_PT_R2524, pt_regs, r2524);
OFFSET(_PT_R2322, pt_regs, r2322);
OFFSET(_PT_R2120, pt_regs, r2120);
OFFSET(_PT_R1918, pt_regs, r1918);
OFFSET(_PT_R1716, pt_regs, r1716);
OFFSET(_PT_R1514, pt_regs, r1514);
OFFSET(_PT_R1312, pt_regs, r1312);
OFFSET(_PT_R1110, pt_regs, r1110);
OFFSET(_PT_R0908, pt_regs, r0908);
OFFSET(_PT_R0706, pt_regs, r0706);
OFFSET(_PT_R0504, pt_regs, r0504);
OFFSET(_PT_R0302, pt_regs, r0302);
OFFSET(_PT_R0100, pt_regs, r0100);
OFFSET(_PT_LC0SA0, pt_regs, lc0sa0);
OFFSET(_PT_LC1SA1, pt_regs, lc1sa1);
OFFSET(_PT_M1M0, pt_regs, m1m0);
OFFSET(_PT_PREDSUSR, pt_regs, predsusr);
OFFSET(_PT_EVREC, pt_regs, hvmer);
OFFSET(_PT_ER_VMEL, pt_regs, hvmer.vmel);
OFFSET(_PT_ER_VMEST, pt_regs, hvmer.vmest);
OFFSET(_PT_ER_VMPSP, pt_regs, hvmer.vmpsp);
OFFSET(_PT_ER_VMBADVA, pt_regs, hvmer.vmbadva);
DEFINE(_PT_REGS_SIZE, sizeof(struct pt_regs));
BLANK();
COMMENT("Hexagon thread_info definitions");
OFFSET(_THREAD_INFO_FLAGS, thread_info, flags);
OFFSET(_THREAD_INFO_PT_REGS, thread_info, regs);
OFFSET(_THREAD_INFO_SP, thread_info, sp);
DEFINE(_THREAD_SIZE, THREAD_SIZE);
BLANK();
COMMENT("Hexagon hexagon_switch_stack definitions");
OFFSET(_SWITCH_R1716, hexagon_switch_stack, r1716);
OFFSET(_SWITCH_R1918, hexagon_switch_stack, r1918);
OFFSET(_SWITCH_R2120, hexagon_switch_stack, r2120);
OFFSET(_SWITCH_R2322, hexagon_switch_stack, r2322);
OFFSET(_SWITCH_R2524, hexagon_switch_stack, r2524);
OFFSET(_SWITCH_R2726, hexagon_switch_stack, r2726);
OFFSET(_SWITCH_FP, hexagon_switch_stack, fp);
OFFSET(_SWITCH_LR, hexagon_switch_stack, lr);
DEFINE(_SWITCH_STACK_SIZE, sizeof(struct hexagon_switch_stack));
BLANK();
COMMENT("Hexagon task_struct definitions");
OFFSET(_TASK_THREAD_INFO, task_struct, stack);
OFFSET(_TASK_STRUCT_THREAD, task_struct, thread);
COMMENT("Hexagon thread_struct definitions");
OFFSET(_THREAD_STRUCT_SWITCH_SP, thread_struct, switch_sp);
return 0;
}
/*
* Linker script for Hexagon kernel
*
* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#define LOAD_OFFSET PAGE_OFFSET
#include <asm-generic/vmlinux.lds.h>
#include <asm/asm-offsets.h> /* Most of the kernel defines are here */
#include <asm/mem-layout.h> /* except for page_offset */
#include <asm/cache.h> /* and now we're pulling cache line size */
OUTPUT_ARCH(hexagon)
ENTRY(stext)
jiffies = jiffies_64;
/*
See asm-generic/vmlinux.lds.h for expansion of some of these macros.
See asm-generic/sections.h for seemingly required labels.
*/
#define PAGE_SIZE _PAGE_SIZE
/* This LOAD_OFFSET is temporary for debugging on the simulator; it may change
for hypervisor pseudo-physical memory. */
SECTIONS
{
. = PAGE_OFFSET + LOAD_ADDRESS;
__init_begin = .;
HEAD_TEXT_SECTION
INIT_TEXT_SECTION(PAGE_SIZE)
PERCPU_SECTION(L1_CACHE_BYTES)
__init_end = .;
. = ALIGN(_PAGE_SIZE);
_stext = .;
.text : AT(ADDR(.text) - LOAD_OFFSET) {
_text = .;
TEXT_TEXT
SCHED_TEXT
LOCK_TEXT
KPROBES_TEXT
*(.fixup)
}
_etext = .;
INIT_DATA_SECTION(PAGE_SIZE)
_sdata = .;
RW_DATA_SECTION(32,PAGE_SIZE,PAGE_SIZE)
RO_DATA_SECTION(PAGE_SIZE)
_edata = .;
EXCEPTION_TABLE(16)
NOTES
BSS_SECTION(_PAGE_SIZE, _PAGE_SIZE, _PAGE_SIZE)
_end = .;
/DISCARD/ : {
EXIT_TEXT
EXIT_DATA
EXIT_CALL
}
STABS_DEBUG
DWARF_DEBUG
}
#
# Makefile for hexagon-specific library files.
#
obj-y = checksum.o io.o memcpy.o memset.o
#
# Makefile for Hexagon memory management subsystem
#
obj-y := init.o pgalloc.o ioremap.o uaccess.o vm_fault.o cache.o
obj-y += copy_to_user.o copy_from_user.o strnlen_user.o vm_tlb.o
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