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https://github.com/edk2-porting/linux-next.git
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bf35706f3d
This patch replaces the 'branch to setup()' instructions embedded in the PROCINFO structs with the offset to that setup function relative to the base of the struct. This preserves the position independent nature of that field, but uses a data item rather than an instruction. This is mainly done to prevent linker failures on large kernels, where the setup function is out of reach for the branch. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
96 lines
2.3 KiB
ArmAsm
96 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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ret 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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ret 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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ret r0
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ENDPROC(cpu_arm9tdmi_reset)
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.popsection
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.type __arm9tdmi_setup, #function
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__arm9tdmi_setup:
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ret 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
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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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initfn __arm9tdmi_setup, __\name\()_proc_info
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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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