diff options
Diffstat (limited to 'src/soc/intel/common/block/cpu/car/cache_as_ram_fsp.S')
| -rw-r--r-- | src/soc/intel/common/block/cpu/car/cache_as_ram_fsp.S | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/cpu/car/cache_as_ram_fsp.S b/src/soc/intel/common/block/cpu/car/cache_as_ram_fsp.S index b9daf08b2f..e77b841612 100644 --- a/src/soc/intel/common/block/cpu/car/cache_as_ram_fsp.S +++ b/src/soc/intel/common/block/cpu/car/cache_as_ram_fsp.S @@ -72,6 +72,13 @@ CAR_init_done: /* Setup bootblock stack */ mov %edx, %esp + /* + * temp_memory_start/end reside in the .bss section, which gets cleared + * below. Save the FSP return value to the stack before writing those + * variables. + */ + push %ecx + push %edx /* clear .bss section as it is not shared */ cld @@ -82,6 +89,11 @@ CAR_init_done: shrl $2, %ecx rep stosl + pop %edx + movl %edx, temp_memory_end + pop %ecx + movl %ecx, temp_memory_start + /* Restore the timestamp from bootblock_crt0.S (ebp:mm1) */ push %ebp movd %mm1, %eax |