mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 06:34:11 +08:00
8bd26e3a7e
The __cpuinit type of throwaway sections might have made sense
some time ago when RAM was more constrained, but now the savings
do not offset the cost and complications. For example, the fix in
commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time")
is a good example of the nasty type of bugs that can be created
with improper use of the various __init prefixes.
After a discussion on LKML[1] it was decided that cpuinit should go
the way of devinit and be phased out. Once all the users are gone,
we can then finally remove the macros themselves from linux/init.h.
Note that some harmless section mismatch warnings may result, since
notify_cpu_starting() and cpu_up() are arch independent (kernel/cpu.c)
and are flagged as __cpuinit -- so if we remove the __cpuinit from
the arch specific callers, we will also get section mismatch warnings.
As an intermediate step, we intend to turn the linux/init.h cpuinit
related content into no-ops as early as possible, since that will get
rid of these warnings. In any case, they are temporary and harmless.
This removes all the ARM uses of the __cpuinit macros from C code,
and all __CPUINIT from assembly code. It also had two ".previous"
section statements that were paired off against __CPUINIT
(aka .section ".cpuinit.text") that also get removed here.
[1] https://lkml.org/lkml/2013/5/20/589
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
96 lines
2.3 KiB
ArmAsm
96 lines
2.3 KiB
ArmAsm
/*
|
|
* linux/arch/arm/mm/proc-arm9tdmi.S: utility functions for ARM9TDMI
|
|
*
|
|
* Copyright (C) 2003-2006 Hyok S. Choi <hyok.choi@samsung.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
*/
|
|
#include <linux/linkage.h>
|
|
#include <linux/init.h>
|
|
#include <asm/assembler.h>
|
|
#include <asm/asm-offsets.h>
|
|
#include <asm/hwcap.h>
|
|
#include <asm/pgtable-hwdef.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/ptrace.h>
|
|
|
|
#include "proc-macros.S"
|
|
|
|
.text
|
|
/*
|
|
* cpu_arm9tdmi_proc_init()
|
|
* cpu_arm9tdmi_do_idle()
|
|
* cpu_arm9tdmi_dcache_clean_area()
|
|
* cpu_arm9tdmi_switch_mm()
|
|
*
|
|
* These are not required.
|
|
*/
|
|
ENTRY(cpu_arm9tdmi_proc_init)
|
|
ENTRY(cpu_arm9tdmi_do_idle)
|
|
ENTRY(cpu_arm9tdmi_dcache_clean_area)
|
|
ENTRY(cpu_arm9tdmi_switch_mm)
|
|
mov pc, lr
|
|
|
|
/*
|
|
* cpu_arm9tdmi_proc_fin()
|
|
*/
|
|
ENTRY(cpu_arm9tdmi_proc_fin)
|
|
mov pc, lr
|
|
|
|
/*
|
|
* Function: cpu_arm9tdmi_reset(loc)
|
|
* Params : loc(r0) address to jump to
|
|
* Purpose : Sets up everything for a reset and jump to the location for soft reset.
|
|
*/
|
|
.pushsection .idmap.text, "ax"
|
|
ENTRY(cpu_arm9tdmi_reset)
|
|
mov pc, r0
|
|
ENDPROC(cpu_arm9tdmi_reset)
|
|
.popsection
|
|
|
|
.type __arm9tdmi_setup, #function
|
|
__arm9tdmi_setup:
|
|
mov pc, lr
|
|
.size __arm9tdmi_setup, . - __arm9tdmi_setup
|
|
|
|
__INITDATA
|
|
|
|
@ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
|
|
define_processor_functions arm9tdmi, dabort=nommu_early_abort, pabort=legacy_pabort, nommu=1
|
|
|
|
.section ".rodata"
|
|
|
|
string cpu_arch_name, "armv4t"
|
|
string cpu_elf_name, "v4"
|
|
string cpu_arm9tdmi_name, "ARM9TDMI"
|
|
string cpu_p2001_name, "P2001"
|
|
|
|
.align
|
|
|
|
.section ".proc.info.init", #alloc, #execinstr
|
|
|
|
.macro arm9tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req
|
|
.type __\name\()_proc_info, #object
|
|
__\name\()_proc_info:
|
|
.long \cpu_val
|
|
.long \cpu_mask
|
|
.long 0
|
|
.long 0
|
|
b __arm9tdmi_setup
|
|
.long cpu_arch_name
|
|
.long cpu_elf_name
|
|
.long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
|
|
.long \cpu_name
|
|
.long arm9tdmi_processor_functions
|
|
.long 0
|
|
.long 0
|
|
.long v4_cache_fns
|
|
.size __\name\()_proc_info, . - __\name\()_proc_info
|
|
.endm
|
|
|
|
arm9tdmi_proc_info arm9tdmi, 0x41009900, 0xfff8ff00, cpu_arm9tdmi_name
|
|
arm9tdmi_proc_info p2001, 0x41029000, 0xffffffff, cpu_p2001_name
|