diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2020-10-28 14:03:14 +0100 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-11-02 06:16:37 +0000 |
| commit | 5a6633491158c919a5f9e0e8cf627facb3fe890e (patch) | |
| tree | b3ecab4c88d808883abf1e277d193cbd32940dbf /src/soc/intel/common/block/cpu | |
| parent | d7388d13f7aa50bc63114c7c4c12f761ed384cdd (diff) | |
drivers/intel/fsp2_0: Add function to report FSP-T output
This allows to compare the FSP-T output in %ecx and %edx to coreboot's
CAR symbols:
Change-Id: I8d79f97f8c12c63ce215935353717855442a8290
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46884
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Diffstat (limited to 'src/soc/intel/common/block/cpu')
| -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 |