diff options
Diffstat (limited to 'src/cpu/amd/car/post_cache_as_ram.c')
| -rw-r--r-- | src/cpu/amd/car/post_cache_as_ram.c | 34 |
1 files changed, 29 insertions, 5 deletions
diff --git a/src/cpu/amd/car/post_cache_as_ram.c b/src/cpu/amd/car/post_cache_as_ram.c index 0a91326b85..813745d66e 100644 --- a/src/cpu/amd/car/post_cache_as_ram.c +++ b/src/cpu/amd/car/post_cache_as_ram.c @@ -18,12 +18,13 @@ static void inline __attribute__((always_inline)) memcopy(void *dest, const voi { __asm__ volatile( "cld\n\t" - "rep movsl\n\t" + "rep; movsl\n\t" : /* No outputs */ : "S" (src), "D" (dest), "c" ((bytes)>>2) ); } + static void post_cache_as_ram(void) { @@ -49,24 +50,34 @@ static void post_cache_as_ram(void) #error "You need to set CONFIG_LB_MEM_TOPK greater than 1024" #endif - set_init_ram_access(); + set_init_ram_access(); /* So we can access RAM from [1M, CONFIG_LB_MEM_TOPK) */ +// dump_mem(DCACHE_RAM_BASE+DCACHE_RAM_SIZE-0x8000, DCACHE_RAM_BASE+DCACHE_RAM_SIZE-0x7c00); print_debug("Copying data from cache to ram -- switching to use ram as stack... "); /* from here don't store more data in CAR */ +#if 0 __asm__ volatile ( "pushl %eax\n\t" ); - memcopy((CONFIG_LB_MEM_TOPK<<10)-DCACHE_RAM_SIZE, DCACHE_RAM_BASE, DCACHE_RAM_SIZE); //inline +#endif + + memcopy((void *)((CONFIG_LB_MEM_TOPK<<10)-DCACHE_RAM_SIZE), (void *)DCACHE_RAM_BASE, DCACHE_RAM_SIZE); //inline +// dump_mem((CONFIG_LB_MEM_TOPK<<10) - 0x8000, (CONFIG_LB_MEM_TOPK<<10) - 0x7c00); + __asm__ volatile ( /* set new esp */ /* before _RAMBASE */ "subl %0, %%ebp\n\t" "subl %0, %%esp\n\t" ::"a"( (DCACHE_RAM_BASE + DCACHE_RAM_SIZE)- (CONFIG_LB_MEM_TOPK<<10) ) ); // We need to push %eax to the stack (CAR) before copy stack and pop it later after copy stack and change esp +#if 0 __asm__ volatile ( "popl %eax\n\t" ); +#endif + + /* We can put data to stack again */ /* only global variable sysinfo in cache need to be offset */ @@ -77,14 +88,27 @@ static void post_cache_as_ram(void) disable_cache_as_ram_bsp(); print_debug("Clearing initial memory region: "); - clear_init_ram(); //except the range from [(CONFIG_LB_MEM_TOPK<<10) - DCACHE_RAM_SIZE, (CONFIG_LB_MEM_TOPK<<10)), that is used as stack in ram + clear_init_ram(); //except the range from [(CONFIG_LB_MEM_TOPK<<10) - DCACHE_RAM_SIZE, (CONFIG_LB_MEM_TOPK<<10)) print_debug("Done\r\n"); +// dump_mem((CONFIG_LB_MEM_TOPK<<10) - 0x8000, (CONFIG_LB_MEM_TOPK<<10) - 0x7c00); + +#ifndef MEM_TRAIN_SEQ +#define MEM_TRAIN_SEQ 0 +#endif + set_sysinfo_in_ram(1); // So other core0 could start to train mem + +#if MEM_TRAIN_SEQ == 1 +// struct sys_info *sysinfox = ((CONFIG_LB_MEM_TOPK<<10) - DCACHE_RAM_GLOBAL_VAR_SIZE); + + // wait for ap memory to trained +// wait_all_core0_mem_trained(sysinfox); // moved to lapic_init_cpus.c +#endif /*copy and execute linuxbios_ram */ copy_and_run(); /* We will not return */ - print_debug("should not be here -\r\n"); + print_debug("should not be here -\r\n"); } |