diff options
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/mips/cpu.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/cpu/mips/cpu.c b/cpu/mips/cpu.c index 7559ac6..de70c4d 100644 --- a/cpu/mips/cpu.c +++ b/cpu/mips/cpu.c @@ -25,6 +25,17 @@ #include <command.h> #include <asm/inca-ip.h> #include <asm/mipsregs.h> +#include <asm/cacheops.h> + +#define cache_op(op,addr) \ + __asm__ __volatile__( \ + " .set push \n" \ + " .set noreorder \n" \ + " .set mips3\n\t \n" \ + " cache %0, %1 \n" \ + " .set pop \n" \ + : \ + : "i" (op), "R" (*(unsigned char *)(addr))) int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { @@ -41,6 +52,17 @@ int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) void flush_cache(ulong start_addr, ulong size) { + unsigned long lsize = CFG_CACHELINE_SIZE; + unsigned long addr = start_addr & ~(lsize - 1); + unsigned long aend = (start_addr + size - 1) & ~(lsize - 1); + + while (1) { + cache_op(Hit_Writeback_Inv_D, start_addr); + cache_op(Hit_Invalidate_I, start_addr); + if (addr == aend) + break; + addr += lsize; + } } void write_one_tlb(int index, u32 pagemask, u32 hi, u32 low0, u32 low1) |