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| author | Arthur Heymans <arthur@aheymans.xyz> | 2019-01-12 11:44:08 +0100 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-01-14 12:10:51 +0000 |
| commit | ec3c8b552dc5334208e7579076afe1a45753363d (patch) | |
| tree | de0130f3411b38b19e4d8e22cfac79572b312fe8 /src/drivers | |
| parent | da44e34743a758aaf9cfa3eac5cf1278297e27e4 (diff) | |
| download | coreboot-ec3c8b552dc5334208e7579076afe1a45753363d.tar.xz | |
drivers/intel/fsp1.1: Read stack guards later
Read back the stack guards after most of the romstage took place.
Change-Id: Ia7dc26c7ed1750d4ebbe7514ed87da57f9e34a89
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/30875
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/intel/fsp1_1/car.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/drivers/intel/fsp1_1/car.c b/src/drivers/intel/fsp1_1/car.c index 63c5042776..79dd3681c3 100644 --- a/src/drivers/intel/fsp1_1/car.c +++ b/src/drivers/intel/fsp1_1/car.c @@ -39,6 +39,7 @@ asmlinkage void *cache_as_ram_main(struct cache_as_ram_params *car_params) const int num_guards = 4; const u32 stack_guard = 0xdeadbeef; u32 *stack_base; + void *ram_stack; u32 size; /* Size of unallocated CAR. */ @@ -78,6 +79,9 @@ asmlinkage void *cache_as_ram_main(struct cache_as_ram_params *car_params) set_fih_car(car_params->fih); + /* Return new stack value in RAM back to assembly stub. */ + ram_stack = cache_as_ram_stage_main(car_params->fih); + /* Check the stack. */ for (i = 0; i < num_guards; i++) { if (stack_base[i] == stack_guard) @@ -85,8 +89,7 @@ asmlinkage void *cache_as_ram_main(struct cache_as_ram_params *car_params) printk(BIOS_DEBUG, "Smashed stack detected in romstage!\n"); } - /* Return new stack value in RAM back to assembly stub. */ - return cache_as_ram_stage_main(car_params->fih); + return ram_stack; } /* Entry point taken when romstage is called after a separate verstage. */ |