1a4baafa7d
The CPU reset functions disable the MMU and therefore must be executed with an identity mapping in place. This patch places the CPU reset functions into the .idmap.text section, causing the idmap code to include them as part of the identity mapping. Acked-by: Dave Martin <dave.martin@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
97 lines
2.3 KiB
ArmAsm
97 lines
2.3 KiB
ArmAsm
/*
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* linux/arch/arm/mm/proc-arm9tdmi.S: utility functions for ARM9TDMI
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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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#include "proc-macros.S"
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.text
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/*
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* cpu_arm9tdmi_proc_init()
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* cpu_arm9tdmi_do_idle()
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* cpu_arm9tdmi_dcache_clean_area()
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* cpu_arm9tdmi_switch_mm()
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*
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* These are not required.
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*/
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ENTRY(cpu_arm9tdmi_proc_init)
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ENTRY(cpu_arm9tdmi_do_idle)
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ENTRY(cpu_arm9tdmi_dcache_clean_area)
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ENTRY(cpu_arm9tdmi_switch_mm)
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mov pc, lr
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/*
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* cpu_arm9tdmi_proc_fin()
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*/
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ENTRY(cpu_arm9tdmi_proc_fin)
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mov pc, lr
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/*
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* Function: cpu_arm9tdmi_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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.pushsection .idmap.text, "ax"
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ENTRY(cpu_arm9tdmi_reset)
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mov pc, r0
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ENDPROC(cpu_arm9tdmi_reset)
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.popsection
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__CPUINIT
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.type __arm9tdmi_setup, #function
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__arm9tdmi_setup:
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mov pc, lr
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.size __arm9tdmi_setup, . - __arm9tdmi_setup
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__INITDATA
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@ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
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define_processor_functions arm9tdmi, dabort=nommu_early_abort, pabort=legacy_pabort, nommu=1
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.section ".rodata"
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string cpu_arch_name, "armv4t"
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string cpu_elf_name, "v4"
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string cpu_arm9tdmi_name, "ARM9TDMI"
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string cpu_p2001_name, "P2001"
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.align
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.section ".proc.info.init", #alloc, #execinstr
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.macro arm9tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req
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.type __\name\()_proc_info, #object
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__\name\()_proc_info:
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.long \cpu_val
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.long \cpu_mask
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.long 0
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.long 0
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b __arm9tdmi_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_name
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.long arm9tdmi_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 __\name\()_proc_info, . - __\name\()_proc_info
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.endm
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arm9tdmi_proc_info arm9tdmi, 0x41009900, 0xfff8ff00, cpu_arm9tdmi_name
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arm9tdmi_proc_info p2001, 0x41029000, 0xffffffff, cpu_p2001_name
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