diff options
| author | Yoshinori Sato <ysato@users.sourceforge.jp> | 2006-09-27 10:21:02 +0200 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2006-09-27 10:21:02 +0200 |
| commit | e96636ccfa373a00a0ee0558e1971baa7856d8b5 (patch) | |
| tree | c4f98b1c92f30f17c8c0d36419977789fe537aab /arch/sh | |
| parent | sh: Make PAGE_OFFSET configurable. (diff) | |
| download | linux-e96636ccfa373a00a0ee0558e1971baa7856d8b5.tar.xz linux-e96636ccfa373a00a0ee0558e1971baa7856d8b5.zip | |
sh: Various nommu fixes.
This fixes up some of the various outstanding nommu bugs on
SH.
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
| -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 |
3 files changed, 22 insertions, 10 deletions
diff --git a/arch/sh/boot/compressed/Makefile b/arch/sh/boot/compressed/Makefile index 7074267c01b7..903470429cb4 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 d1a979eab656..2c6dc3d8df2c 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 8f9165a4e333..d15221beaa16 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; +} |