diff options
| -rw-r--r-- | arch/sh/boot/compressed/Makefile | 10 | ||||
| -rw-r--r-- | arch/sh/mm/init.c | 5 | ||||
| -rw-r--r-- | arch/sh/mm/pg-nommu.c | 17 | ||||
| -rw-r--r-- | include/asm-sh/addrspace.h | 8 | ||||
| -rw-r--r-- | include/asm-sh/flat.h | 2 | ||||
| -rw-r--r-- | include/asm-sh/mmu.h | 13 | ||||
| -rw-r--r-- | include/asm-sh/page.h | 5 | ||||
| -rw-r--r-- | include/asm-sh/uaccess.h | 13 |
8 files changed, 50 insertions, 23 deletions
diff --git a/arch/sh/boot/compressed/Makefile b/arch/sh/boot/compressed/Makefile index 7074267c01b..903470429cb 100644 --- a/arch/sh/boot/compressed/Makefile +++ b/arch/sh/boot/compressed/Makefile @@ -21,11 +21,17 @@ endif CONFIG_PAGE_OFFSET ?= 0x80000000 CONFIG_MEMORY_START ?= 0x0c000000 CONFIG_BOOT_LINK_OFFSET ?= 0x00800000 -IMAGE_OFFSET := $(shell printf "0x%8x" $$[$(CONFIG_PAGE_OFFSET)+$(CONFIG_MEMORY_START)+$(CONFIG_BOOT_LINK_OFFSET)]) + +IMAGE_OFFSET := $(shell printf "0x%8x" $$[$(CONFIG_PAGE_OFFSET) + \ + $(CONFIG_MEMORY_START) + \ + $(CONFIG_BOOT_LINK_OFFSET)]) + +LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name) LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup -T $(obj)/../../kernel/vmlinux.lds -$(obj)/vmlinux: $(OBJECTS) $(obj)/piggy.o FORCE + +$(obj)/vmlinux: $(OBJECTS) $(obj)/piggy.o $(LIBGCC) FORCE $(call if_changed,ld) @: diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c index d1a979eab65..2c6dc3d8df2 100644 --- a/arch/sh/mm/init.c +++ b/arch/sh/mm/init.c @@ -248,8 +248,13 @@ void __init mem_init(void) * Setup wrappers for copy/clear_page(), these will get overridden * later in the boot process if a better method is available. */ +#ifdef CONFIG_MMU copy_page = copy_page_slow; clear_page = clear_page_slow; +#else + copy_page = copy_page_nommu; + clear_page = clear_page_nommu; +#endif /* this will put all low memory onto the freelists */ totalram_pages += free_all_bootmem_node(NODE_DATA(0)); diff --git a/arch/sh/mm/pg-nommu.c b/arch/sh/mm/pg-nommu.c index 8f9165a4e33..d15221beaa1 100644 --- a/arch/sh/mm/pg-nommu.c +++ b/arch/sh/mm/pg-nommu.c @@ -14,23 +14,24 @@ #include <linux/string.h> #include <asm/page.h> -static void copy_page_nommu(void *to, void *from) +void copy_page_nommu(void *to, void *from) { memcpy(to, from, PAGE_SIZE); } -static void clear_page_nommu(void *to) +void clear_page_nommu(void *to) { memset(to, 0, PAGE_SIZE); } -static int __init pg_nommu_init(void) +__kernel_size_t __copy_user(void *to, const void *from, __kernel_size_t n) { - copy_page = copy_page_nommu; - clear_page = clear_page_nommu; - + memcpy(to, from, n); return 0; } -subsys_initcall(pg_nommu_init); - +__kernel_size_t __clear_user(void *to, __kernel_size_t n) +{ + memset(to, 0, n); + return 0; +} diff --git a/include/asm-sh/addrspace.h b/include/asm-sh/addrspace.h index 720afc11c2c..4207368267b 100644 --- a/include/asm-sh/addrspace.h +++ b/include/asm-sh/addrspace.h @@ -14,11 +14,19 @@ #include <asm/cpu/addrspace.h> /* Memory segments (32bit Privileged mode addresses) */ +#ifdef CONFIG_MMU #define P0SEG 0x00000000 #define P1SEG 0x80000000 #define P2SEG 0xa0000000 #define P3SEG 0xc0000000 #define P4SEG 0xe0000000 +#else +#define P0SEG 0x00000000 +#define P1SEG 0x00000000 +#define P2SEG 0x20000000 +#define P3SEG 0x40000000 +#define P4SEG 0x80000000 +#endif /* Returns the privileged segment base of a given address */ #define PXSEG(a) (((unsigned long)(a)) & 0xe0000000) diff --git a/include/asm-sh/flat.h b/include/asm-sh/flat.h index f29072e1c87..0d5cc04ab00 100644 --- a/include/asm-sh/flat.h +++ b/include/asm-sh/flat.h @@ -13,7 +13,7 @@ #define __ASM_SH_FLAT_H #define flat_stack_align(sp) /* nothing needed */ -#define flat_argvp_envp_on_stack() 1 +#define flat_argvp_envp_on_stack() 0 #define flat_old_ram_flag(flags) (flags) #define flat_reloc_valid(reloc, size) ((reloc) <= (size)) #define flat_get_addr_from_rp(rp, relval, flags) get_unaligned(rp) diff --git a/include/asm-sh/mmu.h b/include/asm-sh/mmu.h index ec09589fa6c..6383dc84501 100644 --- a/include/asm-sh/mmu.h +++ b/include/asm-sh/mmu.h @@ -3,19 +3,8 @@ #if !defined(CONFIG_MMU) -struct mm_rblock_struct { - int size; - int refcount; - void *kblock; -}; - -struct mm_tblock_struct { - struct mm_rblock_struct *rblock; - struct mm_tblock_struct *next; -}; - typedef struct { - struct mm_tblock_struct tblock; + struct vm_list_struct *vmlist; unsigned long end_brk; } mm_context_t; diff --git a/include/asm-sh/page.h b/include/asm-sh/page.h index 1b3cfd165a6..e9135532d00 100644 --- a/include/asm-sh/page.h +++ b/include/asm-sh/page.h @@ -38,8 +38,13 @@ extern void (*clear_page)(void *to); extern void (*copy_page)(void *to, void *from); +#ifdef CONFIG_MMU extern void clear_page_slow(void *to); extern void copy_page_slow(void *to, void *from); +#else +extern void clear_page_nommu(void *to); +extern void copy_page_nommu(void *to, void *from); +#endif #if defined(CONFIG_MMU) && (defined(CONFIG_CPU_SH4) || \ defined(CONFIG_SH7705_CACHE_32KB)) diff --git a/include/asm-sh/uaccess.h b/include/asm-sh/uaccess.h index 6c0014dd2ef..5c3b00c2f10 100644 --- a/include/asm-sh/uaccess.h +++ b/include/asm-sh/uaccess.h @@ -168,6 +168,7 @@ do { \ __gu_err; \ }) +#ifdef CONFIG_MMU #define __get_user_check(x,ptr,size) \ ({ \ long __gu_err, __gu_val; \ @@ -257,6 +258,18 @@ __asm__("stc r7_bank, %1\n\t" \ : "r" (addr) \ : "t"); \ }) +#else /* CONFIG_MMU */ +#define __get_user_check(x,ptr,size) \ +({ \ + long __gu_err, __gu_val; \ + if (__access_ok((unsigned long)(ptr), (size))) { \ + __get_user_size(__gu_val, (ptr), (size), __gu_err); \ + (x) = (__typeof__(*(ptr)))__gu_val; \ + } else \ + __gu_err = -EFAULT; \ + __gu_err; \ +}) +#endif #define __get_user_asm(x, addr, err, insn) \ ({ \ |