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; }