diff options
| author | Alexey Brodkin | 2015-11-10 11:13:42 +0300 |
|---|---|---|
| committer | Alexey Brodkin | 2015-11-18 00:38:35 +0300 |
| commit | 90841dc21ed077a045c20dba660da8235a4fa577 (patch) | |
| tree | 8e98349f315e03a82284c92fcf6278b8a980d8ed /arch | |
| parent | 3d4825446e4258192e1f2302d691a8c0c82a0975 (diff) | |
arc: add stubs for map_physmem() and unmap_physmem()
Up until now there was no need in those stubs.
But since following commit compilation of U-Boot on ARC is broken:
------------------------>8----------------------
commit 7861204c9af7fec1ea9b41541c272516235a6c93
Author: Stephen Warren <swarren@wwwdotorg.org>
Date: Sat Oct 3 13:56:46 2015 -0600
itest: make memory access work under sandbox
itest accesses memory, and hence must map/unmap it. Without doing so, it
accesses invalid addresses and crashes.
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
------------------------>8----------------------
That's because CMD_ITEST is enabled by default in common/Kconfig and now
map_physmem()/unmap_physmem() is used there.
So this patch adds missing stubs for ARC.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arc/include/asm/io.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/arc/include/asm/io.h b/arch/arc/include/asm/io.h index 24b7337308a..281682c8b45 100644 --- a/arch/arc/include/asm/io.h +++ b/arch/arc/include/asm/io.h @@ -10,6 +10,30 @@ #include <linux/types.h> #include <asm/byteorder.h> +/* + * Given a physical address and a length, return a virtual address + * that can be used to access the memory range with the caching + * properties specified by "flags". + */ +#define MAP_NOCACHE (0) +#define MAP_WRCOMBINE (0) +#define MAP_WRBACK (0) +#define MAP_WRTHROUGH (0) + +static inline void * +map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) +{ + return (void *)((unsigned long)paddr); +} + +/* + * Take down a mapping set up by map_physmem(). + */ +static inline void unmap_physmem(void *vaddr, unsigned long flags) +{ + +} + static inline void sync(void) { /* Not yet implemented */ |