asmlinkage void *car_stage_c_entry(void)
{
struct postcar_frame pcf;
bool s3wake;
uintptr_t top_of_ram;
uintptr_t top_of_low_usable_memory;
post_code(0x20);
console_init();
/* Initialize DRAM */
s3wake = fill_power_state() == ACPI_S3;
fsp_memory_init(s3wake);
/* Disable the ROM shadow 0x000e0000 - 0x000fffff */
disable_rom_shadow();
/* Initialize the PCIe bridges */
pcie_init();
if (postcar_frame_init(&pcf, 1*KiB))
die("Unable to initialize postcar frame.\n");
/* Locate the top of RAM */
top_of_low_usable_memory = (uintptr_t) cbmem_top();
top_of_ram = ALIGN(top_of_low_usable_memory, 16 * MiB);
/* Cache postcar and ramstage */
postcar_frame_add_mtrr(&pcf, top_of_ram - (16 * MiB), 16 * MiB,
MTRR_TYPE_WRBACK);
/* Cache RMU area */
postcar_frame_add_mtrr(&pcf, (uintptr_t) top_of_low_usable_memory,
0x10000, MTRR_TYPE_WRTHROUGH);
/* Cache ESRAM */
postcar_frame_add_mtrr(&pcf, 0x80000000, 0x80000, MTRR_TYPE_WRBACK);
/* Cache SPI flash - Write protect not supported */
postcar_frame_add_mtrr(&pcf, (uint32_t)(-CONFIG_ROM_SIZE),
CONFIG_ROM_SIZE, MTRR_TYPE_WRTHROUGH);
run_postcar_phase(&pcf);
return NULL;
}
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);
}
/* setup_stack_and_mtrrs() determines the stack to use after
* cache-as-ram is torn down as well as the MTRR settings to use. */
static void platform_enter_postcar(void)
{
struct postcar_frame pcf;
uintptr_t top_of_ram;
if (postcar_frame_init(&pcf, ROMSTAGE_RAM_STACK_SIZE))
die("Unable to initialize postcar frame.\n");
/* Cache the ROM as WP just below 4GiB. */
postcar_frame_add_mtrr(&pcf, CACHE_ROM_BASE, CACHE_ROM_SIZE,
MTRR_TYPE_WRPROT);
/* Cache RAM as WB from 0 -> CACHE_TMP_RAMTOP. */
postcar_frame_add_mtrr(&pcf, 0, CACHE_TMP_RAMTOP, MTRR_TYPE_WRBACK);
/* Cache at least 8 MiB below the top of ram, and at most 8 MiB
* above top of the ram. This satisfies MTRR alignment requirement
* with different TSEG size configurations.
*/
top_of_ram = ALIGN_DOWN((uintptr_t)cbmem_top(), 8*MiB);
postcar_frame_add_mtrr(&pcf, top_of_ram - 8*MiB, 16*MiB,
MTRR_TYPE_WRBACK);
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 = car_get_var_ptr(&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();
disable_watchdog();
console_init();
s3wake = 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_vardata(new_var_data, var_size,
car_get_var(fsp_version));
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. */
if (IS_ENABLED(CONFIG_BOOT_DEVICE_MEMORY_MAPPED))
postcar_frame_add_mtrr(&pcf, -CONFIG_ROM_SIZE, CONFIG_ROM_SIZE,
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(&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);
}
asmlinkage void car_stage_entry(void)
{
void *hob_list_ptr;
const void *mrc_data;
struct range_entry fsp_mem, reg_car;
struct postcar_frame pcf;
size_t mrc_data_size;
uintptr_t top_of_ram;
int prev_sleep_state;
struct romstage_handoff *handoff;
struct chipset_power_state *ps = car_get_var_ptr(&power_state);
timestamp_add_now(TS_START_ROMSTAGE);
soc_early_romstage_init();
disable_watchdog();
console_init();
prev_sleep_state = fill_power_state(ps);
/* Make sure the blob does not override our data in CAR */
range_entry_init(®_car, (uintptr_t)_car_relocatable_data_end,
(uintptr_t)_car_region_end, 0);
if (fsp_memory_init(&hob_list_ptr, ®_car) != FSP_SUCCESS) {
die("FSP memory init failed. Giving up.");
}
fsp_find_reserved_memory(&fsp_mem, hob_list_ptr);
/* initialize cbmem by adding FSP reserved memory first thing */
if (prev_sleep_state != SLEEP_STATE_S3) {
cbmem_initialize_empty_id_size(CBMEM_ID_FSP_RESERVED_MEMORY,
range_entry_size(&fsp_mem));
} else if (cbmem_initialize_id_size(CBMEM_ID_FSP_RESERVED_MEMORY,
range_entry_size(&fsp_mem))) {
if (IS_ENABLED(CONFIG_HAVE_ACPI_RESUME)) {
printk(BIOS_DEBUG, "Failed to recover CBMEM in S3 resume.\n");
/* Failed S3 resume, reset to come up cleanly */
hard_reset();
}
}
/* make sure FSP memory is reserved in cbmem */
if (range_entry_base(&fsp_mem) !=
(uintptr_t)cbmem_find(CBMEM_ID_FSP_RESERVED_MEMORY))
die("Failed to accommodate FSP reserved memory request");
/* Now that CBMEM is up, save the list so ramstage can use it */
fsp_save_hob_list(hob_list_ptr);
/* Save MRC Data to CBMEM */
if (IS_ENABLED(CONFIG_CACHE_MRC_SETTINGS) &&
(prev_sleep_state != SLEEP_STATE_S3))
{
mrc_data = fsp_find_nv_storage_data(&mrc_data_size);
if (mrc_data && mrc_cache_stash_data(mrc_data, mrc_data_size) < 0)
printk(BIOS_ERR, "Failed to stash MRC data\n");
}
/* Create romstage handof information */
handoff = romstage_handoff_find_or_add();
if (handoff != NULL)
handoff->s3_resume = (prev_sleep_state == SLEEP_STATE_S3);
else
printk(BIOS_DEBUG, "Romstage handoff structure not added!\n");
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();
/* 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);
run_postcar_phase(&pcf);
}