void post_cache_as_ram(void)
{
void *resume_backup_memory = NULL;
uint32_t family = amd_fam1x_cpu_family();
/* Verify that the BSP didn't overrun the lower stack
* boundary during romstage execution
*/
volatile uint32_t *lower_stack_boundary;
lower_stack_boundary = (void *)((CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE) - CONFIG_DCACHE_BSP_STACK_SIZE);
if ((*lower_stack_boundary) != 0xdeadbeef)
printk(BIOS_WARNING, "BSP overran lower stack boundary. Undefined behaviour may result!\n");
struct romstage_handoff *handoff;
handoff = romstage_handoff_find_or_add();
if (handoff != NULL)
handoff->s3_resume = acpi_is_wakeup_s3();
else
printk(BIOS_DEBUG, "Romstage handoff structure not added!\n");
int s3resume = acpi_is_wakeup_s3();
if (s3resume) {
cbmem_recovery(s3resume);
resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
}
prepare_romstage_ramstack(resume_backup_memory);
/* from here don't store more data in CAR */
if (family >= 0x1f && family <= 0x3f) {
/* Family 10h and 12h, 11h until shown otherwise */
vErrata343();
}
size_t car_size = car_data_size();
void *migrated_car = (void *)(CONFIG_RAMTOP - car_size);
print_car_debug("Copying data from cache to RAM...");
memcpy_(migrated_car, _car_relocatable_data_start, car_size);
print_car_debug(" Done\n");
print_car_debug("Verifying data integrity in RAM...");
if (memcmp_(migrated_car, _car_relocatable_data_start, car_size) == 0)
print_car_debug(" Done\n");
else
print_car_debug(" FAILED\n");
/* New stack grows right below migrated_car. */
print_car_debug("Switching to use RAM as stack...");
cache_as_ram_switch_stack(migrated_car);
/* We do not come back. */
}
asmlinkage void *post_cache_as_ram(void)
{
uint32_t family = amd_fam1x_cpu_family();
int s3resume = 0;
/* Verify that the BSP didn't overrun the lower stack
* boundary during romstage execution
*/
volatile uint32_t *lower_stack_boundary;
lower_stack_boundary =
(void *)((CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE)
- CONFIG_DCACHE_BSP_STACK_SIZE);
if ((*lower_stack_boundary) != 0xdeadbeef)
printk(BIOS_WARNING, "BSP overran lower stack boundary. Undefined behaviour may result!\n");
s3resume = acpi_is_wakeup_s3();
prepare_romstage_ramstack(s3resume);
romstage_handoff_init(s3resume);
/* from here don't store more data in CAR */
if (family >= 0x1f && family <= 0x3f) {
/* Family 10h and 12h, 11h until shown otherwise */
vErrata343();
}
size_t car_size = car_data_size();
void *migrated_car = (void *)(CONFIG_RAMTOP - car_size);
print_car_debug("Copying data from cache to RAM...");
memcpy_(migrated_car, _car_relocatable_data_start, car_size);
print_car_debug(" Done\n");
print_car_debug("Verifying data integrity in RAM...");
if (memcmp_(migrated_car, _car_relocatable_data_start, car_size) == 0)
print_car_debug(" Done\n");
else
print_car_debug(" FAILED\n");
/* New stack grows right below migrated_car. */
print_car_debug("Switching to use RAM as stack...");
return migrated_car;
}
