asmlinkage void car_stage_entry(void)
{
bool s3wake;
struct postcar_frame pcf;
uintptr_t top_of_ram;
struct chipset_power_state *ps = pmc_get_power_state();
console_init();
/* Program MCHBAR, DMIBAR, GDXBAR and EDRAMBAR */
systemagent_early_init();
/* initialize Heci interface */
heci_init(HECI1_BASE_ADDRESS);
timestamp_add_now(TS_START_ROMSTAGE);
s3wake = pmc_fill_power_state(ps) == ACPI_S3;
fsp_memory_init(s3wake);
pmc_set_disb();
if (!s3wake)
save_dimm_info();
if (postcar_frame_init(&pcf, 1 * KiB))
die("Unable to initialize postcar frame.\n");
/*
* We need to make sure ramstage will be run cached. At this
* point exact location of ramstage in cbmem is not known.
* Instruct postcar to cache 16 megs under cbmem top which is
* a safe bet to cover ramstage.
*/
top_of_ram = (uintptr_t) cbmem_top();
printk(BIOS_DEBUG, "top_of_ram = 0x%lx\n", top_of_ram);
top_of_ram -= 16*MiB;
postcar_frame_add_mtrr(&pcf, top_of_ram, 16*MiB, MTRR_TYPE_WRBACK);
/* Cache the ROM as WP just below 4GiB. */
postcar_frame_add_romcache(&pcf, MTRR_TYPE_WRPROT);
run_postcar_phase(&pcf);
}
asmlinkage void car_stage_entry(void)
{
struct postcar_frame pcf;
uintptr_t top_of_ram;
bool s3wake;
struct chipset_power_state *ps = pmc_get_power_state();
void *smm_base;
size_t smm_size, var_size;
const void *new_var_data;
uintptr_t tseg_base;
timestamp_add_now(TS_START_ROMSTAGE);
soc_early_romstage_init();
console_init();
s3wake = pmc_fill_power_state(ps) == ACPI_S3;
fsp_memory_init(s3wake);
if (punit_init())
set_max_freq();
else
printk(BIOS_DEBUG, "Punit failed to initialize properly\n");
/* Stash variable MRC data and let cache system update it later */
new_var_data = fsp_find_extension_hob_by_guid(hob_variable_guid,
&var_size);
if (new_var_data)
mrc_cache_stash_data(MRC_VARIABLE_DATA,
car_get_var(fsp_version), new_var_data,
var_size);
else
printk(BIOS_ERR, "Failed to determine variable data\n");
if (postcar_frame_init(&pcf, 1*KiB))
die("Unable to initialize postcar frame.\n");
mainboard_save_dimm_info();
/*
* We need to make sure ramstage will be run cached. At this point exact
* location of ramstage in cbmem is not known. Instruct postcar to cache
* 16 megs under cbmem top which is a safe bet to cover ramstage.
*/
top_of_ram = (uintptr_t) cbmem_top();
/* cbmem_top() needs to be at least 16 MiB aligned */
assert(ALIGN_DOWN(top_of_ram, 16*MiB) == top_of_ram);
postcar_frame_add_mtrr(&pcf, top_of_ram - 16*MiB, 16*MiB,
MTRR_TYPE_WRBACK);
/* Cache the memory-mapped boot media. */
postcar_frame_add_romcache(&pcf, MTRR_TYPE_WRPROT);
/*
* Cache the TSEG region at the top of ram. This region is
* not restricted to SMM mode until SMM has been relocated.
* By setting the region to cacheable it provides faster access
* when relocating the SMM handler as well as using the TSEG
* region for other purposes.
*/
smm_region_info(&smm_base, &smm_size);
tseg_base = (uintptr_t)smm_base;
postcar_frame_add_mtrr(&pcf, tseg_base, smm_size, MTRR_TYPE_WRBACK);
run_postcar_phase(&pcf);
}
