Commit e92c9518 authored by Nobuhiro Iwamatsu's avatar Nobuhiro Iwamatsu
Browse files

sh: Add support SH4 cache control



Add support SH4 cache control and flash_cache function

Signed-off-by: default avatarNobuhiro Iwamatsu <iwamatsu@nigauri.org>
parent 28e5efde
......@@ -24,6 +24,7 @@
#include <common.h>
#include <command.h>
#include <asm/processor.h>
#include <asm/cache.h>
int checkcpu(void)
{
......@@ -51,7 +52,7 @@ int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
void flush_cache (unsigned long addr, unsigned long size)
{
dcache_invalid_range( addr , addr + size );
}
void icache_enable (void)
......
#ifndef __ASM_SH_CACHE_H
#define __ASM_SH_CACHE_H
#if defined(CONFIG_SH4) || defined(CONFIG_SH4A)
#define L1_CACHE_BYTES 32
struct __large_struct { unsigned long buf[100]; };
#define __m(x) (*(struct __large_struct *)(x))
void dcache_wback_range(u32 start, u32 end)
{
u32 v;
start &= ~(L1_CACHE_BYTES-1);
for (v = start; v < end; v+=L1_CACHE_BYTES) {
asm volatile("ocbwb %0"
: /* no output */
: "m" (__m(v)));
}
}
void dcache_invalid_range(u32 start, u32 end)
{
u32 v;
start &= ~(L1_CACHE_BYTES-1);
for (v = start; v < end; v+=L1_CACHE_BYTES) {
asm volatile("ocbi %0"
: /* no output */
: "m" (__m(v)));
}
}
#endif /* CONFIG_SH4 || CONFIG_SH4A */
#endif /* __ASM_SH_CACHE_H */
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