diff options
| -rw-r--r-- | arch/arm/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mm/Kconfig | 13 | ||||
| -rw-r--r-- | arch/arm/mm/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mm/proc-arm7tdmi.S | 249 | ||||
| -rw-r--r-- | include/asm-arm/cacheflush.h | 2 | ||||
| -rw-r--r-- | include/asm-arm/proc-fns.h | 8 |
6 files changed, 273 insertions, 1 deletions
diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 80cee786500..282333fe0a7 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -55,6 +55,7 @@ arch-$(CONFIG_CPU_32v3) :=-D__LINUX_ARM_ARCH__=3 -march=armv3 # This selects how we optimise for the processor. tune-$(CONFIG_CPU_ARM610) :=-mtune=arm610 tune-$(CONFIG_CPU_ARM710) :=-mtune=arm710 +tune-$(CONFIG_CPU_ARM7TDMI) :=-mtune=arm7tdmi tune-$(CONFIG_CPU_ARM720T) :=-mtune=arm7tdmi tune-$(CONFIG_CPU_ARM920T) :=-mtune=arm9tdmi tune-$(CONFIG_CPU_ARM922T) :=-mtune=arm9tdmi diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index 0ac11ea8450..9f860aa9c90 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -25,6 +25,19 @@ config CPU_ARM610 Say Y if you want support for the ARM610 processor. Otherwise, say N. +# ARM7TDMI +config CPU_ARM7TDMI + bool "Support ARM7TDMI processor" + select CPU_32v4T + select CPU_ABRT_LV4T + select CPU_CACHE_V4 + help + A 32-bit RISC microprocessor based on the ARM7 processor core + which has no memory control unit and cache. + + Say Y if you want support for the ARM7TDMI processor. + Otherwise, say N. + # ARM710 config CPU_ARM710 bool "Support ARM710 processor" if !ARCH_CLPS7500 && ARCH_RPC diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile index 2d0ab19db49..908f6d43717 100644 --- a/arch/arm/mm/Makefile +++ b/arch/arm/mm/Makefile @@ -46,6 +46,7 @@ obj-$(CONFIG_CPU_TLB_V6) += tlb-v6.o obj-$(CONFIG_CPU_ARM610) += proc-arm6_7.o obj-$(CONFIG_CPU_ARM710) += proc-arm6_7.o +obj-$(CONFIG_CPU_ARM7TDMI) += proc-arm7tdmi.o obj-$(CONFIG_CPU_ARM720T) += proc-arm720.o obj-$(CONFIG_CPU_ARM920T) += proc-arm920.o obj-$(CONFIG_CPU_ARM922T) += proc-arm922.o diff --git a/arch/arm/mm/proc-arm7tdmi.S b/arch/arm/mm/proc-arm7tdmi.S new file mode 100644 index 00000000000..22d7e3100ea --- /dev/null +++ b/arch/arm/mm/proc-arm7tdmi.S @@ -0,0 +1,249 @@ +/* + * linux/arch/arm/mm/proc-arm7tdmi.S: utility functions for ARM7TDMI + * + * 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_arm7tdmi_proc_init() + * cpu_arm7tdmi_do_idle() + * cpu_arm7tdmi_dcache_clean_area() + * cpu_arm7tdmi_switch_mm() + * + * These are not required. + */ +ENTRY(cpu_arm7tdmi_proc_init) +ENTRY(cpu_arm7tdmi_do_idle) +ENTRY(cpu_arm7tdmi_dcache_clean_area) +ENTRY(cpu_arm7tdmi_switch_mm) + mov pc, lr + +/* + * cpu_arm7tdmi_proc_fin() + */ +ENTRY(cpu_arm7tdmi_proc_fin) + mov r0, #PSR_F_BIT | PSR_I_BIT | SVC_MODE + msr cpsr_c, r0 + mov pc, lr + +/* + * Function: cpu_arm7tdmi_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_arm7tdmi_reset) + mov pc, r0 + + __INIT + + .type __arm7tdmi_setup, #function +__arm7tdmi_setup: + mov pc, lr + .size __arm7tdmi_setup, . - __arm7tdmi_setup + + __INITDATA + +/* + * Purpose : Function pointers used to access above functions - all calls + * come through these + */ + .type arm7tdmi_processor_functions, #object +ENTRY(arm7tdmi_processor_functions) + .word v4t_late_abort + .word cpu_arm7tdmi_proc_init + .word cpu_arm7tdmi_proc_fin + .word cpu_arm7tdmi_reset + .word cpu_arm7tdmi_do_idle + .word cpu_arm7tdmi_dcache_clean_area + .word cpu_arm7tdmi_switch_mm + .word 0 @ cpu_*_set_pte + .size arm7tdmi_processor_functions, . - arm7tdmi_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_arm7tdmi_name, #object +cpu_arm7tdmi_name: + .asciz "ARM7TDMI" + .size cpu_arm7tdmi_name, . - cpu_arm7tdmi_name + + .type cpu_triscenda7_name, #object +cpu_triscenda7_name: + .asciz "Triscend-A7x" + .size cpu_triscenda7_name, . - cpu_triscenda7_name + + .type cpu_at91_name, #object +cpu_at91_name: + .asciz "Atmel-AT91M40xxx" + .size cpu_at91_name, . - cpu_at91_name + + .type cpu_s3c3410_name, #object +cpu_s3c3410_name: + .asciz "Samsung-S3C3410" + .size cpu_s3c3410_name, . - cpu_s3c3410_name + + .type cpu_s3c44b0x_name, #object +cpu_s3c44b0x_name: + .asciz "Samsung-S3C44B0x" + .size cpu_s3c44b0x_name, . - cpu_s3c44b0x_name + + .type cpu_s3c4510b, #object +cpu_s3c4510b_name: + .asciz "Samsung-S3C4510B" + .size cpu_s3c4510b_name, . - cpu_s3c4510b_name + + .type cpu_s3c4530_name, #object +cpu_s3c4530_name: + .asciz "Samsung-S3C4530" + .size cpu_s3c4530_name, . - cpu_s3c4530_name + + .type cpu_netarm_name, #object +cpu_netarm_name: + .asciz "NETARM" + .size cpu_netarm_name, . - cpu_netarm_name + + .align + + .section ".proc.info.init", #alloc, #execinstr + + .type __arm7tdmi_proc_info, #object +__arm7tdmi_proc_info: + .long 0x41007700 + .long 0xfff8ff00 + .long 0 + .long 0 + b __arm7tdmi_setup + .long cpu_arch_name + .long cpu_elf_name + .long HWCAP_SWP | HWCAP_26BIT + .long cpu_arm7tdmi_name + .long arm7tdmi_processor_functions + .long 0 + .long 0 + .long v4_cache_fns + .size __arm7tdmi_proc_info, . - __arm7dmi_proc_info + + .type __triscenda7_proc_info, #object +__triscenda7_proc_info: + .long 0x0001d2ff + .long 0x0001ffff + .long 0 + .long 0 + b __arm7tdmi_setup + .long cpu_arch_name + .long cpu_elf_name + .long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT + .long cpu_triscenda7_name + .long arm7tdmi_processor_functions + .long 0 + .long 0 + .long v4_cache_fns + .size __triscenda7_proc_info, . - __triscenda7_proc_info + + .type __at91_proc_info, #object +__at91_proc_info: + .long 0x14000040 + .long 0xfff000e0 + .long 0 + .long 0 + b __arm7tdmi_setup + .long cpu_arch_name + .long cpu_elf_name + .long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT + .long cpu_at91_name + .long arm7tdmi_processor_functions + .long 0 + .long 0 + .long v4_cache_fns + .size __at91_proc_info, . - __at91_proc_info + + .type __s3c4510b_proc_info, #object +__s3c4510b_proc_info: + .long 0x36365000 + .long 0xfffff000 + .long 0 + .long 0 + b __arm7tdmi_setup + .long cpu_arch_name + .long cpu_elf_name + .long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT + .long cpu_s3c4510b_name + .long arm7tdmi_processor_functions + .long 0 + .long 0 + .long v4_cache_fns + .size __s3c4510b_proc_info, . - __s3c4510b_proc_info + + .type __s3c4530_proc_info, #object +__s3c4530_proc_info: + .long 0x4c000000 + .long 0xfff000e0 + .long 0 + .long 0 + b __arm7tdmi_setup + .long cpu_arch_name + .long cpu_elf_name + .long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT + .long cpu_s3c4530_name + .long arm7tdmi_processor_functions + .long 0 + .long 0 + .long v4_cache_fns + .size __s3c4530_proc_info, . - __s3c4530_proc_info + + .type __s3c3410_proc_info, #object +__s3c3410_proc_info: + .long 0x34100000 + .long 0xffff0000 + .long 0 + .long 0 + b __arm7tdmi_setup + .long cpu_arch_name + .long cpu_elf_name + .long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT + .long cpu_s3c3410_name + .long arm7tdmi_processor_functions + .long 0 + .long 0 + .long v4_cache_fns + .size __s3c3410_proc_info, . - __s3c3410_proc_info + + .type __s3c44b0x_proc_info, #object +__s3c44b0x_proc_info: + .long 0x44b00000 + .long 0xffff0000 + .long 0 + .long 0 + b __arm7tdmi_setup + .long cpu_arch_name + .long cpu_elf_name + .long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT + .long cpu_s3c44b0x_name + .long arm7tdmi_processor_functions + .long 0 + .long 0 + .long v4_cache_fns + .size __s3c44b0x_proc_info, . - __s3c44b0x_proc_info diff --git a/include/asm-arm/cacheflush.h b/include/asm-arm/cacheflush.h index e4a2569c636..e7bfff298e4 100644 --- a/include/asm-arm/cacheflush.h +++ b/include/asm-arm/cacheflush.h @@ -33,7 +33,7 @@ # endif #endif -#if defined(CONFIG_CPU_ARM720T) +#if defined(CONFIG_CPU_ARM720T) || defined(CONFIG_CPU_ARM7TDMI) # ifdef _CACHE # define MULTI_CACHE 1 # else diff --git a/include/asm-arm/proc-fns.h b/include/asm-arm/proc-fns.h index 1bde92cdaeb..3e8c057e66b 100644 --- a/include/asm-arm/proc-fns.h +++ b/include/asm-arm/proc-fns.h @@ -33,6 +33,14 @@ # define CPU_NAME cpu_arm6 # endif # endif +# ifdef CONFIG_CPU_ARM7TDMI +# ifdef CPU_NAME +# undef MULTI_CPU +# define MULTI_CPU +# else +# define CPU_NAME cpu_arm7tdmi +# endif +# endif # ifdef CONFIG_CPU_ARM710 # ifdef CPU_NAME # undef MULTI_CPU |