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Commit 3f5f0a44 authored by Paul Burton's avatar Paul Burton Committed by Ralf Baechle
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MIPS: generic: Convert SEAD-3 to a generic board 

Convert the MIPS SEAD-3 board support to be a generic board, supported
by generic kernels.

Because the SEAD-3 boot protocol was defined long ago and we don't want
to force a switch to the UHI protocol, SEAD-3 is added as a legacy board
which is detected by reading the REVISION register. This may technically
not be a valid memory read & future work will include attempting to
handle that gracefully. In practice since SEAD-3 is the only legacy
board supported by the generic kernel so far the read will only happen
on SEAD-3 boards, and even once Malta is converted the same REVISION
register exists there too. Other boards such as Boston, Ci20 & Ci40 will
use the UHI boot protocol & thus not run any of the legacy board detect
functions.
Signed-off-by: default avatarPaul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14354/Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent eed0eabd
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Showing with 152 additions and 730 deletions
arch/mips/Kbuild.platforms
View file @ 3f5f0a44
......@@ -19,7 +19,6 @@ platforms += lasat
platforms += loongson32
platforms += loongson64
platforms += mti-malta
platforms += mti-sead3
platforms += netlogic
platforms += paravirt
platforms += pic32
......
arch/mips/Kconfig
View file @ 3f5f0a44
......@@ -546,41 +546,6 @@ config MACH_PIC32
Microchip PIC32 is a family of general-purpose 32 bit MIPS core
microcontrollers.
config MIPS_SEAD3
bool "MIPS SEAD3 board"
select BOOT_ELF32
select BOOT_RAW
select BUILTIN_DTB
select CEVT_R4K
select CSRC_R4K
select CLKSRC_MIPS_GIC
select COMMON_CLK
select CPU_MIPSR2_IRQ_VI
select CPU_MIPSR2_IRQ_EI
select DMA_NONCOHERENT
select IRQ_MIPS_CPU
select MIPS_GIC
select LIBFDT
select MIPS_MSC
select SYS_HAS_CPU_MIPS32_R1
select SYS_HAS_CPU_MIPS32_R2
select SYS_HAS_CPU_MIPS32_R6
select SYS_HAS_CPU_MIPS64_R1
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_64BIT_KERNEL
select SYS_SUPPORTS_BIG_ENDIAN
select SYS_SUPPORTS_LITTLE_ENDIAN
select SYS_SUPPORTS_SMARTMIPS
select SYS_SUPPORTS_MICROMIPS
select SYS_SUPPORTS_MIPS16
select SYS_SUPPORTS_RELOCATABLE
select USB_EHCI_BIG_ENDIAN_DESC
select USB_EHCI_BIG_ENDIAN_MMIO
select USE_OF
help
This enables support for the MIPS Technologies SEAD3 evaluation
board.
config NEC_MARKEINS
bool "NEC EMMA2RH Mark-eins board"
select SOC_EMMA2RH
......@@ -2976,7 +2941,7 @@ endchoice
choice
prompt "Kernel command line type" if !CMDLINE_OVERRIDE
default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
!MIPS_MALTA && !MIPS_SEAD3 && \
!MIPS_MALTA && \
!CAVIUM_OCTEON_SOC
default MIPS_CMDLINE_FROM_BOOTLOADER
......
arch/mips/Makefile
View file @ 3f5f0a44
......@@ -488,3 +488,16 @@ $(generic_defconfigs):
# Prevent generic merge_config rules attempting to merge single fragments
#
$(generic_config_dir)/%.config: ;
#
# Legacy defconfig compatibility - these targets used to be real defconfigs but
# now that the boards have been converted to use the generic kernel they are
# wrappers around the generic rules above.
#
.PHONY: sead3_defconfig
sead3_defconfig:
$(Q)$(MAKE) 32r2el_defconfig BOARDS=sead-3
.PHONY: sead3micro_defconfig
sead3micro_defconfig:
$(Q)$(MAKE) micro32r2el_defconfig BOARDS=sead-3
arch/mips/boot/dts/mti/Makefile
View file @ 3f5f0a44
dtb-$(CONFIG_MIPS_MALTA) += malta.dtb
dtb-$(CONFIG_MIPS_SEAD3) += sead3.dtb
dtb-$(CONFIG_LEGACY_BOARD_SEAD3) += sead3.dtb
obj-y += $(patsubst %.dtb, %.dtb.o, $(dtb-y))
......
arch/mips/boot/dts/mti/sead3.dts
View file @ 3f5f0a44
......@@ -10,6 +10,7 @@ / {
#address-cells = <1>;
#size-cells = <1>;
compatible = "mti,sead-3";
model = "MIPS SEAD-3";
interrupt-parent = <&gic>;
chosen {
......
arch/mips/configs/generic/board-sead-3.config 0 → 100644
View file @ 3f5f0a44
CONFIG_LEGACY_BOARD_SEAD3=y
CONFIG_AUXDISPLAY=y
CONFIG_IMG_ASCII_LCD=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_SYSCON=y
CONFIG_MMC=y
CONFIG_MMC_SPI=y
CONFIG_MTD=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_CFI=y
CONFIG_MTD_CFI_INTELEXT=y
CONFIG_MTD_OF_PARTS=y
CONFIG_MTD_PHYSMAP=y
CONFIG_MTD_PHYSMAP_OF=y
CONFIG_MTD_UBI=y
CONFIG_MTD_UBI_GLUEBI=y
CONFIG_NETDEVICES=y
CONFIG_SMSC911X=y
CONFIG_SMSC_PHY=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_OF_PLATFORM=y
CONFIG_USB=y
CONFIG_USB_EHCI_HCD=y
arch/mips/configs/sead3_defconfig deleted 100644 → 0
View file @ eed0eabd
CONFIG_MIPS_SEAD3=y
CONFIG_CPU_LITTLE_ENDIAN=y
CONFIG_CPU_MIPS32_R2=y
CONFIG_HZ_100=y
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=15
CONFIG_EMBEDDED=y
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="earlycon"
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=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_IPV6 is not set
# CONFIG_WIRELESS is not set
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_DEVTMPFS=y
CONFIG_MTD=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_CFI=y
CONFIG_MTD_CFI_INTELEXT=y
CONFIG_MTD_PHYSMAP=y
CONFIG_MTD_UBI=y
CONFIG_MTD_UBI_GLUEBI=y
CONFIG_OF=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_SCSI=y
# CONFIG_SCSI_PROC_FS is not set
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_SG=y
# CONFIG_SCSI_LOWLEVEL is not set
CONFIG_NETDEVICES=y
CONFIG_SMSC911X=y
# CONFIG_NET_VENDOR_WIZNET is not set
CONFIG_MARVELL_PHY=y
CONFIG_DAVICOM_PHY=y
CONFIG_QSEMI_PHY=y
CONFIG_LXT_PHY=y
CONFIG_CICADA_PHY=y
CONFIG_VITESSE_PHY=y
CONFIG_SMSC_PHY=y
CONFIG_BROADCOM_PHY=y
CONFIG_ICPLUS_PHY=y
# CONFIG_WLAN is not set
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_SERIO is not set
# CONFIG_CONSOLE_TRANSLATIONS is not set
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_LEGACY_PTY_COUNT=32
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=2
CONFIG_SERIAL_8250_RUNTIME_UARTS=2
CONFIG_SERIAL_OF_PLATFORM=y
# CONFIG_HW_RANDOM is not set
CONFIG_I2C=y
# CONFIG_I2C_COMPAT is not set
CONFIG_I2C_CHARDEV=y
# CONFIG_I2C_HELPER_AUTO is not set
CONFIG_SPI=y
CONFIG_POWER_RESET=y
CONFIG_POWER_RESET_RESTART=y
CONFIG_POWER_RESET_SYSCON=y
CONFIG_SENSORS_ADT7475=y
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_CLASS_DEVICE=y
CONFIG_BACKLIGHT_CLASS_DEVICE=y
# CONFIG_VGA_CONSOLE is not set
CONFIG_USB=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y
CONFIG_USB_STORAGE=y
CONFIG_MMC=y
CONFIG_MMC_DEBUG=y
CONFIG_MMC_SPI=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_SYSCON=y
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_M41T80=y
CONFIG_EXT3_FS=y
# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
CONFIG_XFS_FS=y
CONFIG_XFS_QUOTA=y
CONFIG_XFS_POSIX_ACL=y
CONFIG_QUOTA=y
# CONFIG_PRINT_QUOTA_WARNING is not set
CONFIG_MSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_TMPFS=y
CONFIG_JFFS2_FS=y
CONFIG_NFS_FS=y
CONFIG_ROOT_NFS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=y
CONFIG_NLS_ISO8859_15=y
CONFIG_NLS_UTF8=y
# CONFIG_FTRACE is not set
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_ARC4=y
# CONFIG_CRYPTO_ANSI_CPRNG is not set
# CONFIG_CRYPTO_HW is not set
arch/mips/configs/sead3micro_defconfig deleted 100644 → 0
View file @ eed0eabd
CONFIG_MIPS_SEAD3=y
CONFIG_CPU_LITTLE_ENDIAN=y
CONFIG_CPU_MIPS32_R2=y
CONFIG_CPU_MICROMIPS=y
CONFIG_HZ_100=y
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=15
CONFIG_EMBEDDED=y
CONFIG_SLAB=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
# CONFIG_BLK_DEV_BSG is not set
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_IP_PNP_BOOTP=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_IPV6 is not set
# CONFIG_WIRELESS is not set
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_DEVTMPFS=y
CONFIG_MTD=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_CFI=y
CONFIG_MTD_CFI_INTELEXT=y
CONFIG_MTD_PHYSMAP=y
CONFIG_MTD_UBI=y
CONFIG_MTD_UBI_GLUEBI=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_SCSI=y
# CONFIG_SCSI_PROC_FS is not set
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_SG=y
# CONFIG_SCSI_LOWLEVEL is not set
CONFIG_NETDEVICES=y
CONFIG_SMSC911X=y
# CONFIG_NET_VENDOR_WIZNET is not set
CONFIG_MARVELL_PHY=y
CONFIG_DAVICOM_PHY=y
CONFIG_QSEMI_PHY=y
CONFIG_LXT_PHY=y
CONFIG_CICADA_PHY=y
CONFIG_VITESSE_PHY=y
CONFIG_SMSC_PHY=y
CONFIG_BROADCOM_PHY=y
CONFIG_ICPLUS_PHY=y
# CONFIG_WLAN is not set
# CONFIG_INPUT_MOUSEDEV is not set
# CONFIG_INPUT_KEYBOARD is not set
# CONFIG_INPUT_MOUSE is not set
# CONFIG_SERIO is not set
# CONFIG_CONSOLE_TRANSLATIONS is not set
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_LEGACY_PTY_COUNT=32
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=2
CONFIG_SERIAL_8250_RUNTIME_UARTS=2
# CONFIG_HW_RANDOM is not set
CONFIG_I2C=y
# CONFIG_I2C_COMPAT is not set
CONFIG_I2C_CHARDEV=y
# CONFIG_I2C_HELPER_AUTO is not set
CONFIG_SPI=y
CONFIG_SENSORS_ADT7475=y
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_CLASS_DEVICE=y
CONFIG_BACKLIGHT_CLASS_DEVICE=y
# CONFIG_VGA_CONSOLE is not set
CONFIG_USB=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_ROOT_HUB_TT=y
CONFIG_USB_STORAGE=y
CONFIG_MMC=y
CONFIG_MMC_DEBUG=y
CONFIG_MMC_SPI=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_M41T80=y
CONFIG_EXT3_FS=y
# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
CONFIG_XFS_FS=y
CONFIG_XFS_QUOTA=y
CONFIG_XFS_POSIX_ACL=y
CONFIG_QUOTA=y
# CONFIG_PRINT_QUOTA_WARNING is not set
CONFIG_MSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_TMPFS=y
CONFIG_JFFS2_FS=y
CONFIG_NFS_FS=y
CONFIG_ROOT_NFS=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=y
CONFIG_NLS_ISO8859_15=y
CONFIG_NLS_UTF8=y
# CONFIG_FTRACE is not set
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_ARC4=y
# CONFIG_CRYPTO_ANSI_CPRNG is not set
# CONFIG_CRYPTO_HW is not set
arch/mips/generic/Kconfig
View file @ 3f5f0a44
......@@ -9,4 +9,11 @@ config LEGACY_BOARDS
kernel is booted without being provided with an FDT via the UHI
boot protocol.
config LEGACY_BOARD_SEAD3
bool "Support MIPS SEAD-3 boards"
select LEGACY_BOARDS
help
Enable this to include support for booting on MIPS SEAD-3 FPGA-based
development boards, which boot using a legacy boot protocol.
endif
arch/mips/generic/Makefile
View file @ 3f5f0a44
......@@ -11,3 +11,5 @@
obj-y += init.o
obj-y += irq.o
obj-y += proc.o
obj-$(CONFIG_LEGACY_BOARD_SEAD3) += board-sead3.o
arch/mips/mti-sead3/sead3-dtshim.c → arch/mips/generic/board-sead3.c
View file @ 3f5f0a44
......@@ -4,11 +4,11 @@
*
* 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
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#define pr_fmt(fmt) "sead3-dtshim: " fmt
#define pr_fmt(fmt) "sead3: " fmt
#include <linux/errno.h>
#include <linux/libfdt.h>
......@@ -16,13 +16,49 @@
#include <asm/fw/fw.h>
#include <asm/io.h>
#include <asm/machine.h>
#define SEAD_CONFIG CKSEG1ADDR(0x1b100110)
#define SEAD_CONFIG_GIC_PRESENT BIT(1)
static unsigned char fdt_buf[16 << 10] __initdata;
#define MIPS_REVISION CKSEG1ADDR(0x1fc00010)
#define MIPS_REVISION_MACHINE (0xf << 4)
#define MIPS_REVISION_MACHINE_SEAD3 (0x4 << 4)
static int append_memory(void *fdt)
static __init bool sead3_detect(void)
{
uint32_t rev;
rev = __raw_readl((void *)MIPS_REVISION);
return (rev & MIPS_REVISION_MACHINE) == MIPS_REVISION_MACHINE_SEAD3;
}
static __init int append_cmdline(void *fdt)
{
int err, chosen_off;
/* find or add chosen node */
chosen_off = fdt_path_offset(fdt, "/chosen");
if (chosen_off == -FDT_ERR_NOTFOUND)
chosen_off = fdt_path_offset(fdt, "/chosen@0");
if (chosen_off == -FDT_ERR_NOTFOUND)
chosen_off = fdt_add_subnode(fdt, 0, "chosen");
if (chosen_off < 0) {
pr_err("Unable to find or add DT chosen node: %d\n",
chosen_off);
return chosen_off;
}
err = fdt_setprop_string(fdt, chosen_off, "bootargs", fw_getcmdline());
if (err) {
pr_err("Unable to set bootargs property: %d\n", err);
return err;
}
return 0;
}
static __init int append_memory(void *fdt)
{
unsigned long phys_memsize, memsize;
__be32 mem_array[2];
......@@ -89,7 +125,7 @@ static int append_memory(void *fdt)
return 0;
}
static int remove_gic(void *fdt)
static __init int remove_gic(void *fdt)
{
const unsigned int cpu_ehci_int = 2;
const unsigned int cpu_uart_int = 4;
......@@ -163,7 +199,7 @@ static int remove_gic(void *fdt)
return err;
}
ehci_off = fdt_node_offset_by_compatible(fdt, -1, "mti,sead3-ehci");
ehci_off = fdt_node_offset_by_compatible(fdt, -1, "generic-ehci");
if (ehci_off < 0) {
pr_err("unable to find EHCI DT node: %d\n", ehci_off);
return ehci_off;
......@@ -178,7 +214,7 @@ static int remove_gic(void *fdt)
return 0;
}
static int serial_config(void *fdt)
static __init int serial_config(void *fdt)
{
const char *yamontty, *mode_var;
char mode_var_name[9], path[18], parity;
......@@ -257,21 +293,28 @@ static int serial_config(void *fdt)
return 0;
}
void __init *sead3_dt_shim(void *fdt)
static __init const void *sead3_fixup_fdt(const void *fdt,
const void *match_data)
{
static unsigned char fdt_buf[16 << 10] __initdata;
int err;
if (fdt_check_header(fdt))
panic("Corrupt DT");
/* if this isn't SEAD3, leave the DT alone */
if (fdt_node_check_compatible(fdt, 0, "mti,sead-3"))
return fdt;
/* if this isn't SEAD3, something went wrong */
BUG_ON(fdt_node_check_compatible(fdt, 0, "mti,sead-3"));
fw_init_cmdline();
err = fdt_open_into(fdt, fdt_buf, sizeof(fdt_buf));
if (err)
panic("Unable to open FDT: %d", err);
err = append_cmdline(fdt_buf);
if (err)
panic("Unable to patch FDT: %d", err);
err = append_memory(fdt_buf);
if (err)
panic("Unable to patch FDT: %d", err);
......@@ -290,3 +333,44 @@ void __init *sead3_dt_shim(void *fdt)
return fdt_buf;
}
static __init unsigned int sead3_measure_hpt_freq(void)
{
void __iomem *status_reg = (void __iomem *)0xbf000410;
unsigned int freq, orig, tick = 0;
unsigned long flags;
local_irq_save(flags);
orig = readl(status_reg) & 0x2; /* get original sample */
/* wait for transition */
while ((readl(status_reg) & 0x2) == orig)
;
orig = orig ^ 0x2; /* flip the bit */
write_c0_count(0);
/* wait 1 second (the sampling clock transitions every 10ms) */
while (tick < 100) {
/* wait for transition */
while ((readl(status_reg) & 0x2) == orig)
;
orig = orig ^ 0x2; /* flip the bit */
tick++;
}
freq = read_c0_count();
local_irq_restore(flags);
return freq;
}
extern char __dtb_sead3_begin[];
MIPS_MACHINE(sead3) = {
.fdt = __dtb_sead3_begin,
.detect = sead3_detect,
.fixup_fdt = sead3_fixup_fdt,
.measure_hpt_freq = sead3_measure_hpt_freq,
};
arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h deleted 100644 → 0
View file @ eed0eabd
/*
* 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) 2003, 2004 Chris Dearman
* Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
*/
#ifndef __ASM_MACH_MIPS_CPU_FEATURE_OVERRIDES_H
#define __ASM_MACH_MIPS_CPU_FEATURE_OVERRIDES_H
/*
* CPU feature overrides for MIPS boards
*/
#ifdef CONFIG_CPU_MIPS32
#define cpu_has_tlb 1
#define cpu_has_4kex 1
#define cpu_has_4k_cache 1
/* #define cpu_has_fpu ? */
/* #define cpu_has_32fpr ? */
#define cpu_has_counter 1
/* #define cpu_has_watch ? */
#define cpu_has_divec 1
#define cpu_has_vce 0
/* #define cpu_has_cache_cdex_p ? */
/* #define cpu_has_cache_cdex_s ? */
/* #define cpu_has_prefetch ? */
#define cpu_has_mcheck 1
/* #define cpu_has_ejtag ? */
#ifdef CONFIG_CPU_MICROMIPS
#define cpu_has_llsc 0
#else
#define cpu_has_llsc 1
#endif
/* #define cpu_has_vtag_icache ? */
/* #define cpu_has_dc_aliases ? */
/* #define cpu_has_ic_fills_f_dc ? */
#define cpu_has_nofpuex 0
/* #define cpu_has_64bits ? */
/* #define cpu_has_64bit_zero_reg ? */
/* #define cpu_has_inclusive_pcaches ? */
#define cpu_icache_snoops_remote_store 1
#endif
#ifdef CONFIG_CPU_MIPS64
#define cpu_has_tlb 1
#define cpu_has_4kex 1
#define cpu_has_4k_cache 1
/* #define cpu_has_fpu ? */
/* #define cpu_has_32fpr ? */
#define cpu_has_counter 1
/* #define cpu_has_watch ? */
#define cpu_has_divec 1
#define cpu_has_vce 0
/* #define cpu_has_cache_cdex_p ? */
/* #define cpu_has_cache_cdex_s ? */
/* #define cpu_has_prefetch ? */
#define cpu_has_mcheck 1
/* #define cpu_has_ejtag ? */
#define cpu_has_llsc 1
/* #define cpu_has_vtag_icache ? */
/* #define cpu_has_dc_aliases ? */
/* #define cpu_has_ic_fills_f_dc ? */
#define cpu_has_nofpuex 0
/* #define cpu_has_64bits ? */
/* #define cpu_has_64bit_zero_reg ? */
/* #define cpu_has_inclusive_pcaches ? */
#define cpu_icache_snoops_remote_store 1
#endif
#endif /* __ASM_MACH_MIPS_CPU_FEATURE_OVERRIDES_H */
arch/mips/include/asm/mach-sead3/irq.h deleted 100644 → 0
View file @ eed0eabd
#ifndef __ASM_MACH_MIPS_IRQ_H
#define __ASM_MACH_MIPS_IRQ_H
#define NR_IRQS 256
#include_next <irq.h>
#endif /* __ASM_MACH_MIPS_IRQ_H */
arch/mips/include/asm/mach-sead3/kernel-entry-init.h deleted 100644 → 0
View file @ eed0eabd
/*
* 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.
*
* Chris Dearman (chris@mips.com)
* Copyright (C) 2007 Mips Technologies, Inc.
*/
#ifndef __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H
#define __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H
.macro kernel_entry_setup
.endm
/*
* Do SMP slave processor setup necessary before we can safely execute C code.
*/
.macro smp_slave_setup
.endm
#endif /* __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H */
arch/mips/include/asm/mach-sead3/sead3-dtshim.h deleted 100644 → 0
View file @ eed0eabd
/*
* Copyright (C) 2016 Imagination Technologies
* Author: Paul Burton <paul.burton@imgtec.com>
*
* 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 __MIPS_SEAD3_DTSHIM_H__
#define __MIPS_SEAD3_DTSHIM_H__
#include <linux/init.h>
#ifdef CONFIG_MIPS_SEAD3
extern void __init *sead3_dt_shim(void *fdt);
#else /* !CONFIG_MIPS_SEAD3 */
static inline void *sead3_dt_shim(void *fdt)
{
return fdt;
}
#endif /* !CONFIG_MIPS_SEAD3 */
#endif /* __MIPS_SEAD3_DTSHIM_H__ */
arch/mips/include/asm/mach-sead3/war.h deleted 100644 → 0
View file @ eed0eabd
/*
* 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) 2002, 2004, 2007 by Ralf Baechle <ralf@linux-mips.org>
*/
#ifndef __ASM_MIPS_MACH_MIPS_WAR_H
#define __ASM_MIPS_MACH_MIPS_WAR_H
#define R4600_V1_INDEX_ICACHEOP_WAR 0
#define R4600_V1_HIT_CACHEOP_WAR 0
#define R4600_V2_HIT_CACHEOP_WAR 0
#define R5432_CP0_INTERRUPT_WAR 0
#define BCM1250_M3_WAR 0
#define SIBYTE_1956_WAR 0
#define MIPS4K_ICACHE_REFILL_WAR 1
#define MIPS_CACHE_SYNC_WAR 1
#define TX49XX_ICACHE_INDEX_INV_WAR 0
#define ICACHE_REFILLS_WORKAROUND_WAR 1
#define R10000_LLSC_WAR 0
#define MIPS34K_MISSED_ITLB_WAR 0
#endif /* __ASM_MIPS_MACH_MIPS_WAR_H */
arch/mips/mti-sead3/Makefile deleted 100644 → 0
View file @ eed0eabd
#
# Carsten Langgaard, carstenl@mips.com
# Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
#
# Copyright (C) 2008 Wind River Systems, Inc.
# written by Ralf Baechle <ralf@linux-mips.org>
#
# Copyright (C) 2012 MIPS Technoligies, Inc. All rights reserved.
# Steven J. Hill <sjhill@mips.com>
#
obj-y := sead3-dtshim.o
obj-y += sead3-init.o
obj-y += sead3-int.o
obj-y += sead3-setup.o
obj-y += sead3-time.o
arch/mips/mti-sead3/Platform deleted 100644 → 0
View file @ eed0eabd
#
# MIPS SEAD-3 board
#
platform-$(CONFIG_MIPS_SEAD3) += mti-sead3/
cflags-$(CONFIG_MIPS_SEAD3) += -I$(srctree)/arch/mips/include/asm/mach-sead3
load-$(CONFIG_MIPS_SEAD3) += 0xffffffff80100000
all-$(CONFIG_MIPS_SEAD3) := $(COMPRESSION_FNAME).srec
arch/mips/mti-sead3/sead3-init.c deleted 100644 → 0
View file @ eed0eabd
/*
* 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) 2012 MIPS Technologies, Inc. All rights reserved.
*/
#include <linux/init.h>
#include <linux/io.h>
#include <asm/bootinfo.h>
#include <asm/cacheflush.h>
#include <asm/traps.h>
#include <asm/mips-boards/generic.h>
#include <asm/fw/fw.h>
extern char except_vec_nmi;
extern char except_vec_ejtag_debug;
static void __init mips_nmi_setup(void)
{
void *base;
base = cpu_has_veic ?
(void *)(CAC_BASE + 0xa80) :
(void *)(CAC_BASE + 0x380);
#ifdef CONFIG_CPU_MICROMIPS
/*
* Decrement the exception vector address by one for microMIPS.
*/
memcpy(base, (&except_vec_nmi - 1), 0x80);
/*
* This is a hack. We do not know if the boot loader was built with
* microMIPS instructions or not. If it was not, the NMI exception
* code at 0x80000a80 will be taken in MIPS32 mode. The hand coded
* assembly below forces us into microMIPS mode if we are a pure
* microMIPS kernel. The assembly instructions are:
*
* 3C1A8000 lui k0,0x8000
* 375A0381 ori k0,k0,0x381
* 03400008 jr k0
* 00000000 nop
*
* The mode switch occurs by jumping to the unaligned exception
* vector address at 0x80000381 which would have been 0x80000380
* in MIPS32 mode. The jump to the unaligned address transitions
* us into microMIPS mode.
*/
if (!cpu_has_veic) {
void *base2 = (void *)(CAC_BASE + 0xa80);
*((unsigned int *)base2) = 0x3c1a8000;
*((unsigned int *)base2 + 1) = 0x375a0381;
*((unsigned int *)base2 + 2) = 0x03400008;
*((unsigned int *)base2 + 3) = 0x00000000;
flush_icache_range((unsigned long)base2,
(unsigned long)base2 + 0x10);
}
#else
memcpy(base, &except_vec_nmi, 0x80);
#endif
flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
}
static void __init mips_ejtag_setup(void)
{
void *base;
base = cpu_has_veic ?
(void *)(CAC_BASE + 0xa00) :
(void *)(CAC_BASE + 0x300);
#ifdef CONFIG_CPU_MICROMIPS
/* Deja vu... */
memcpy(base, (&except_vec_ejtag_debug - 1), 0x80);
if (!cpu_has_veic) {
void *base2 = (void *)(CAC_BASE + 0xa00);
*((unsigned int *)base2) = 0x3c1a8000;
*((unsigned int *)base2 + 1) = 0x375a0301;
*((unsigned int *)base2 + 2) = 0x03400008;
*((unsigned int *)base2 + 3) = 0x00000000;
flush_icache_range((unsigned long)base2,
(unsigned long)base2 + 0x10);
}
#else
memcpy(base, &except_vec_ejtag_debug, 0x80);
#endif
flush_icache_range((unsigned long)base, (unsigned long)base + 0x80);
}
void __init prom_init(void)
{
board_nmi_handler_setup = mips_nmi_setup;
board_ejtag_handler_setup = mips_ejtag_setup;
fw_init_cmdline();
}
void __init prom_free_prom_memory(void)
{
}
arch/mips/mti-sead3/sead3-int.c deleted 100644 → 0
View file @ eed0eabd
/*
* 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) 2012 MIPS Technologies, Inc. All rights reserved.
*/
#include <linux/init.h>
#include <linux/irqchip.h>
#include <linux/irqchip/mips-gic.h>
#include <asm/cpu-info.h>
#include <asm/irq.h>
void __init arch_init_irq(void)
{
irqchip_init();
pr_info("GIC: %spresent\n", (gic_present) ? "" : "not ");
pr_info("EIC: %s\n",
(current_cpu_data.options & MIPS_CPU_VEIC) ? "on" : "off");
}
arch/mips/mti-sead3/sead3-setup.c deleted 100644 → 0
View file @ eed0eabd
/*
* 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) 2012 MIPS Technologies, Inc. All rights reserved.
* Copyright (C) 2013 Imagination Technologies Ltd.
*/
#include <linux/init.h>
#include <linux/libfdt.h>
#include <linux/of_fdt.h>
#include <asm/prom.h>
#include <asm/mach-sead3/sead3-dtshim.h>
#include <asm/mips-boards/generic.h>
const char *get_system_type(void)
{
return "MIPS SEAD3";
}
void __init *plat_get_fdt(void)
{
return (void *)__dtb_start;
}
void __init plat_mem_setup(void)
{
void *fdt = plat_get_fdt();
fdt = sead3_dt_shim(fdt);
__dt_setup_arch(fdt);
}
void __init device_tree_init(void)
{
unflatten_and_copy_device_tree();
}
arch/mips/mti-sead3/sead3-time.c deleted 100644 → 0
View file @ eed0eabd
/*
* 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) 2012 MIPS Technologies, Inc. All rights reserved.
*/
#include <linux/init.h>
#include <linux/irqchip/mips-gic.h>
#include <asm/cpu.h>
#include <asm/setup.h>
#include <asm/time.h>
#include <asm/irq.h>
#include <asm/mips-boards/generic.h>
static void __iomem *status_reg = (void __iomem *)0xbf000410;
/*
* Estimate CPU frequency. Sets mips_hpt_frequency as a side-effect.
*/
static unsigned int __init estimate_cpu_frequency(void)
{
unsigned int prid = read_c0_prid() & (PRID_COMP_MASK | PRID_IMP_MASK);
unsigned int tick = 0;
unsigned int freq;
unsigned int orig;
unsigned long flags;
local_irq_save(flags);
orig = readl(status_reg) & 0x2; /* get original sample */
/* wait for transition */
while ((readl(status_reg) & 0x2) == orig)
;
orig = orig ^ 0x2; /* flip the bit */
write_c0_count(0);
/* wait 1 second (the sampling clock transitions every 10ms) */
while (tick < 100) {
/* wait for transition */
while ((readl(status_reg) & 0x2) == orig)
;
orig = orig ^ 0x2; /* flip the bit */
tick++;
}
freq = read_c0_count();
local_irq_restore(flags);
mips_hpt_frequency = freq;
/* Adjust for processor */
if ((prid != (PRID_COMP_MIPS | PRID_IMP_20KC)) &&
(prid != (PRID_COMP_MIPS | PRID_IMP_25KF)))
freq *= 2;
freq += 5000; /* rounding */
freq -= freq%10000;
return freq ;
}
int get_c0_perfcount_int(void)
{
if (gic_present)
return gic_get_c0_perfcount_int();
if (cp0_perfcount_irq >= 0)
return MIPS_CPU_IRQ_BASE + cp0_perfcount_irq;
return -1;
}
EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
unsigned int get_c0_compare_int(void)
{
if (gic_present)
return gic_get_c0_compare_int();
return MIPS_CPU_IRQ_BASE + cp0_compare_irq;
}
void __init plat_time_init(void)
{
unsigned int est_freq;
est_freq = estimate_cpu_frequency();
pr_debug("CPU frequency %d.%02d MHz\n", (est_freq / 1000000),
(est_freq % 1000000) * 100 / 1000000);
}
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