提交 43f5f014 编写于 作者: H Hyok S. Choi 提交者: Russell King

[ARM] nommu: add ARM9TDMI core support

This patch adds ARM9TDMI core support which has no cache and no CP15
register(no memory control unit).
Signed-off-by: NHyok S. Choi <hyok.choi@samsung.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
上级 b731c311
......@@ -58,6 +58,7 @@ tune-$(CONFIG_CPU_ARM710) :=-mtune=arm710
tune-$(CONFIG_CPU_ARM7TDMI) :=-mtune=arm7tdmi
tune-$(CONFIG_CPU_ARM720T) :=-mtune=arm7tdmi
tune-$(CONFIG_CPU_ARM740T) :=-mtune=arm7tdmi
tune-$(CONFIG_CPU_ARM9TDMI) :=-mtune=arm9tdmi
tune-$(CONFIG_CPU_ARM920T) :=-mtune=arm9tdmi
tune-$(CONFIG_CPU_ARM922T) :=-mtune=arm9tdmi
tune-$(CONFIG_CPU_ARM925T) :=-mtune=arm9tdmi
......
......@@ -90,6 +90,19 @@ config CPU_ARM740T
Say Y if you want support for the ARM740T processor.
Otherwise, say N.
# ARM9TDMI
config CPU_ARM9TDMI
bool "Support ARM9TDMI processor"
select CPU_32v4T
select CPU_ABRT_EV4T
select CPU_CACHE_V4
help
A 32-bit RISC microprocessor based on the ARM9 processor core
which has no memory control unit and cache.
Say Y if you want support for the ARM9TDMI processor.
Otherwise, say N.
# ARM920T
config CPU_ARM920T
bool "Support ARM920T processor"
......
......@@ -49,6 +49,7 @@ obj-$(CONFIG_CPU_ARM710) += proc-arm6_7.o
obj-$(CONFIG_CPU_ARM7TDMI) += proc-arm7tdmi.o
obj-$(CONFIG_CPU_ARM720T) += proc-arm720.o
obj-$(CONFIG_CPU_ARM740T) += proc-arm740.o
obj-$(CONFIG_CPU_ARM9TDMI) += proc-arm9tdmi.o
obj-$(CONFIG_CPU_ARM920T) += proc-arm920.o
obj-$(CONFIG_CPU_ARM922T) += proc-arm922.o
obj-$(CONFIG_CPU_ARM925T) += proc-arm925.o
......
/*
* 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/pgtable-hwdef.h>
#include <asm/pgtable.h>
#include <asm/procinfo.h>
#include <asm/ptrace.h>
.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 r0, #PSR_F_BIT | PSR_I_BIT | SVC_MODE
msr cpsr_c, r0
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.
*/
ENTRY(cpu_arm9tdmi_reset)
mov pc, r0
__INIT
.type __arm9tdmi_setup, #function
__arm9tdmi_setup:
mov pc, lr
.size __arm9tdmi_setup, . - __arm9tdmi_setup
__INITDATA
/*
* Purpose : Function pointers used to access above functions - all calls
* come through these
*/
.type arm9tdmi_processor_functions, #object
ENTRY(arm9tdmi_processor_functions)
.word v4t_early_abort
.word cpu_arm9tdmi_proc_init
.word cpu_arm9tdmi_proc_fin
.word cpu_arm9tdmi_reset
.word cpu_arm9tdmi_do_idle
.word cpu_arm9tdmi_dcache_clean_area
.word cpu_arm9tdmi_switch_mm
.word 0 @ cpu_*_set_pte
.size arm9tdmi_processor_functions, . - arm9tdmi_processor_functions
.section ".rodata"
.type cpu_arch_name, #object
cpu_arch_name:
.asciz "armv4t"
.size cpu_arch_name, . - cpu_arch_name
.type cpu_elf_name, #object
cpu_elf_name:
.asciz "v4"
.size cpu_elf_name, . - cpu_elf_name
.type cpu_arm9tdmi_name, #object
cpu_arm9tdmi_name:
.asciz "ARM9TDMI"
.size cpu_arm9tdmi_name, . - cpu_arm9tdmi_name
.type cpu_p2001_name, #object
cpu_p2001_name:
.asciz "P2001"
.size cpu_p2001_name, . - cpu_p2001_name
.align
.section ".proc.info.init", #alloc, #execinstr
.type __arm9tdmi_proc_info, #object
__arm9tdmi_proc_info:
.long 0x41009900
.long 0xfff8ff00
.long 0
.long 0
b __arm9tdmi_setup
.long cpu_arch_name
.long cpu_elf_name
.long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
.long cpu_arm9tdmi_name
.long arm9tdmi_processor_functions
.long 0
.long 0
.long v4_cache_fns
.size __arm9tdmi_proc_info, . - __arm9dmi_proc_info
.type __p2001_proc_info, #object
__p2001_proc_info:
.long 0x41029000
.long 0xffffffff
.long 0
.long 0
b __arm9tdmi_setup
.long cpu_arch_name
.long cpu_elf_name
.long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
.long cpu_p2001_name
.long arm9tdmi_processor_functions
.long 0
.long 0
.long v4_cache_fns
.size __p2001_proc_info, . - __p2001_proc_info
......@@ -34,7 +34,8 @@
# endif
#endif
#if defined(CONFIG_CPU_ARM720T) || defined(CONFIG_CPU_ARM7TDMI)
#if defined(CONFIG_CPU_ARM720T) || defined(CONFIG_CPU_ARM7TDMI) || \
defined(CONFIG_CPU_ARM9TDMI)
# ifdef _CACHE
# define MULTI_CACHE 1
# else
......
......@@ -65,6 +65,14 @@
# define CPU_NAME cpu_arm740
# endif
# endif
# ifdef CONFIG_CPU_ARM9TDMI
# ifdef CPU_NAME
# undef MULTI_CPU
# define MULTI_CPU
# else
# define CPU_NAME cpu_arm9tdmi
# endif
# endif
# ifdef CONFIG_CPU_ARM920T
# ifdef CPU_NAME
# undef MULTI_CPU
......
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