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Diffstat (limited to 'src/cpu/intel/car')
-rw-r--r--src/cpu/intel/car/romstage.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/src/cpu/intel/car/romstage.c b/src/cpu/intel/car/romstage.c
index 28801458cd..e24225e71e 100644
--- a/src/cpu/intel/car/romstage.c
+++ b/src/cpu/intel/car/romstage.c
@@ -21,6 +21,8 @@
#include <program_loading.h>
#include <timestamp.h>
+/* If we do not have a constrained _car_stack region size, use the
+ following as a guideline for acceptable stack usage. */
#define DCACHE_RAM_ROMSTAGE_STACK_SIZE 0x2000
static struct postcar_frame early_mtrrs;
@@ -43,16 +45,18 @@ static void prepare_and_run_postcar(struct postcar_frame *pcf)
static void romstage_main(unsigned long bist)
{
int i;
- const int num_guards = 4;
+ const int num_guards = 64;
const u32 stack_guard = 0xdeadbeef;
u32 *stack_base;
u32 size;
+ const size_t stack_size = MAX(CONFIG_DCACHE_BSP_STACK_SIZE,
+ DCACHE_RAM_ROMSTAGE_STACK_SIZE);
/* Size of unallocated CAR. */
size = ALIGN_DOWN(_car_stack_size, 16);
- size = MIN(size, DCACHE_RAM_ROMSTAGE_STACK_SIZE);
- if (size < DCACHE_RAM_ROMSTAGE_STACK_SIZE)
+ size = MIN(size, stack_size);
+ if (size < stack_size)
printk(BIOS_DEBUG, "Romstage stack size limited to 0x%x!\n",
size);