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https://github.com/edk2-porting/linux-next.git
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4fb2847437
Instruction fault status register, IFSR, was introduced on ARMv6 to
provide status information about the last insturction fault. It
needed for proper prefetch abort handling.
Now we have three prefetch abort model:
* legacy - for CPUs before ARMv6. They doesn't provide neither
IFSR nor IFAR. We simulate IFSR with section translation fault
status for them to generalize code;
* ARMv6 - provides IFSR, but not IFAR;
* ARMv7 - provides both IFSR and IFAR.
Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
251 lines
5.7 KiB
ArmAsm
251 lines
5.7 KiB
ArmAsm
/*
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* linux/arch/arm/mm/proc-arm7tdmi.S: utility functions for ARM7TDMI
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*
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* Copyright (C) 2003-2006 Hyok S. Choi <hyok.choi@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/linkage.h>
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#include <linux/init.h>
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#include <asm/assembler.h>
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#include <asm/asm-offsets.h>
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#include <asm/hwcap.h>
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#include <asm/pgtable-hwdef.h>
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#include <asm/pgtable.h>
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#include <asm/ptrace.h>
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.text
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/*
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* cpu_arm7tdmi_proc_init()
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* cpu_arm7tdmi_do_idle()
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* cpu_arm7tdmi_dcache_clean_area()
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* cpu_arm7tdmi_switch_mm()
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*
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* These are not required.
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*/
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ENTRY(cpu_arm7tdmi_proc_init)
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ENTRY(cpu_arm7tdmi_do_idle)
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ENTRY(cpu_arm7tdmi_dcache_clean_area)
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ENTRY(cpu_arm7tdmi_switch_mm)
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mov pc, lr
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/*
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* cpu_arm7tdmi_proc_fin()
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*/
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ENTRY(cpu_arm7tdmi_proc_fin)
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mov r0, #PSR_F_BIT | PSR_I_BIT | SVC_MODE
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msr cpsr_c, r0
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mov pc, lr
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/*
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* Function: cpu_arm7tdmi_reset(loc)
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* Params : loc(r0) address to jump to
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* Purpose : Sets up everything for a reset and jump to the location for soft reset.
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*/
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ENTRY(cpu_arm7tdmi_reset)
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mov pc, r0
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__INIT
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.type __arm7tdmi_setup, #function
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__arm7tdmi_setup:
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mov pc, lr
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.size __arm7tdmi_setup, . - __arm7tdmi_setup
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__INITDATA
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/*
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* Purpose : Function pointers used to access above functions - all calls
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* come through these
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*/
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.type arm7tdmi_processor_functions, #object
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ENTRY(arm7tdmi_processor_functions)
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.word v4t_late_abort
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.word legacy_pabort
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.word cpu_arm7tdmi_proc_init
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.word cpu_arm7tdmi_proc_fin
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.word cpu_arm7tdmi_reset
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.word cpu_arm7tdmi_do_idle
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.word cpu_arm7tdmi_dcache_clean_area
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.word cpu_arm7tdmi_switch_mm
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.word 0 @ cpu_*_set_pte
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.size arm7tdmi_processor_functions, . - arm7tdmi_processor_functions
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.section ".rodata"
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.type cpu_arch_name, #object
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cpu_arch_name:
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.asciz "armv4t"
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.size cpu_arch_name, . - cpu_arch_name
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.type cpu_elf_name, #object
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cpu_elf_name:
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.asciz "v4"
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.size cpu_elf_name, . - cpu_elf_name
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.type cpu_arm7tdmi_name, #object
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cpu_arm7tdmi_name:
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.asciz "ARM7TDMI"
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.size cpu_arm7tdmi_name, . - cpu_arm7tdmi_name
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.type cpu_triscenda7_name, #object
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cpu_triscenda7_name:
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.asciz "Triscend-A7x"
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.size cpu_triscenda7_name, . - cpu_triscenda7_name
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.type cpu_at91_name, #object
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cpu_at91_name:
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.asciz "Atmel-AT91M40xxx"
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.size cpu_at91_name, . - cpu_at91_name
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.type cpu_s3c3410_name, #object
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cpu_s3c3410_name:
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.asciz "Samsung-S3C3410"
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.size cpu_s3c3410_name, . - cpu_s3c3410_name
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.type cpu_s3c44b0x_name, #object
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cpu_s3c44b0x_name:
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.asciz "Samsung-S3C44B0x"
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.size cpu_s3c44b0x_name, . - cpu_s3c44b0x_name
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.type cpu_s3c4510b, #object
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cpu_s3c4510b_name:
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.asciz "Samsung-S3C4510B"
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.size cpu_s3c4510b_name, . - cpu_s3c4510b_name
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.type cpu_s3c4530_name, #object
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cpu_s3c4530_name:
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.asciz "Samsung-S3C4530"
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.size cpu_s3c4530_name, . - cpu_s3c4530_name
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.type cpu_netarm_name, #object
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cpu_netarm_name:
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.asciz "NETARM"
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.size cpu_netarm_name, . - cpu_netarm_name
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.align
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.section ".proc.info.init", #alloc, #execinstr
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.type __arm7tdmi_proc_info, #object
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__arm7tdmi_proc_info:
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.long 0x41007700
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.long 0xfff8ff00
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.long 0
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.long 0
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b __arm7tdmi_setup
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.long cpu_arch_name
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.long cpu_elf_name
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.long HWCAP_SWP | HWCAP_26BIT
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.long cpu_arm7tdmi_name
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.long arm7tdmi_processor_functions
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.long 0
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.long 0
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.long v4_cache_fns
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.size __arm7tdmi_proc_info, . - __arm7dmi_proc_info
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.type __triscenda7_proc_info, #object
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__triscenda7_proc_info:
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.long 0x0001d2ff
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.long 0x0001ffff
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.long 0
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.long 0
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b __arm7tdmi_setup
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.long cpu_arch_name
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.long cpu_elf_name
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.long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
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.long cpu_triscenda7_name
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.long arm7tdmi_processor_functions
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.long 0
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.long 0
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.long v4_cache_fns
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.size __triscenda7_proc_info, . - __triscenda7_proc_info
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.type __at91_proc_info, #object
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__at91_proc_info:
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.long 0x14000040
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.long 0xfff000e0
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.long 0
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.long 0
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b __arm7tdmi_setup
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.long cpu_arch_name
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.long cpu_elf_name
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.long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
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.long cpu_at91_name
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.long arm7tdmi_processor_functions
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.long 0
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.long 0
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.long v4_cache_fns
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.size __at91_proc_info, . - __at91_proc_info
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.type __s3c4510b_proc_info, #object
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__s3c4510b_proc_info:
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.long 0x36365000
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.long 0xfffff000
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.long 0
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.long 0
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b __arm7tdmi_setup
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.long cpu_arch_name
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.long cpu_elf_name
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.long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
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.long cpu_s3c4510b_name
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.long arm7tdmi_processor_functions
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.long 0
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.long 0
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.long v4_cache_fns
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.size __s3c4510b_proc_info, . - __s3c4510b_proc_info
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.type __s3c4530_proc_info, #object
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__s3c4530_proc_info:
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.long 0x4c000000
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.long 0xfff000e0
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.long 0
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.long 0
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b __arm7tdmi_setup
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.long cpu_arch_name
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.long cpu_elf_name
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.long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
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.long cpu_s3c4530_name
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.long arm7tdmi_processor_functions
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.long 0
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.long 0
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.long v4_cache_fns
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.size __s3c4530_proc_info, . - __s3c4530_proc_info
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.type __s3c3410_proc_info, #object
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__s3c3410_proc_info:
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.long 0x34100000
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.long 0xffff0000
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.long 0
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.long 0
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b __arm7tdmi_setup
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.long cpu_arch_name
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.long cpu_elf_name
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.long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
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.long cpu_s3c3410_name
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.long arm7tdmi_processor_functions
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.long 0
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.long 0
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.long v4_cache_fns
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.size __s3c3410_proc_info, . - __s3c3410_proc_info
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.type __s3c44b0x_proc_info, #object
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__s3c44b0x_proc_info:
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.long 0x44b00000
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.long 0xffff0000
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.long 0
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.long 0
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b __arm7tdmi_setup
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.long cpu_arch_name
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.long cpu_elf_name
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.long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
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.long cpu_s3c44b0x_name
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.long arm7tdmi_processor_functions
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.long 0
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.long 0
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.long v4_cache_fns
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.size __s3c44b0x_proc_info, . - __s3c44b0x_proc_info
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