static void romstage_main(unsigned long bist)
{
int i;
const int num_guards = 4;
const u32 stack_guard = 0xdeadbeef;
u32 *stack_base;
u32 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)
printk(BIOS_DEBUG, "Romstage stack size limited to 0x%x!\n",
size);
stack_base = (u32 *) (_car_stack_end - size);
for (i = 0; i < num_guards; i++)
stack_base[i] = stack_guard;
mainboard_romstage_entry(bist);
/* Check the stack. */
for (i = 0; i < num_guards; i++) {
if (stack_base[i] == stack_guard)
continue;
printk(BIOS_DEBUG, "Smashed stack detected in romstage!\n");
}
platform_enter_postcar();
}
/* Entry from cache-as-ram.inc. */
void *asmlinkage romstage_main(unsigned long bist, uint32_t tsc_low,
uint32_t tsc_hi)
{
struct romstage_params rp = {
.bist = bist,
.mrc_params = NULL,
};
/* Save initial timestamp from bootblock. */
timestamp_init((((uint64_t)tsc_hi) << 32) | (uint64_t)tsc_low);
/* Save romstage begin */
timestamp_add_now(TS_START_ROMSTAGE);
program_base_addresses();
tco_disable();
byt_config_com1_and_enable();
console_init();
spi_init();
set_max_freq();
punit_init();
gfx_init();
/* Call into mainboard. */
mainboard_romstage_entry(&rp);
platform_enter_postcar();
/* We don't return here */
return NULL;
}