| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2014 Google Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <stdlib.h> |
| #include <console/console.h> |
| #include <arch/stages.h> |
| #include <cbfs.h> |
| #include <cbmem.h> |
| #include <ramstage_loader.h> |
| #include <romstage_handoff.h> |
| #include <timestamp.h> |
| |
| extern const struct ramstage_loader_ops cbfs_ramstage_loader; |
| extern const struct ramstage_loader_ops vboot_ramstage_loader; |
| |
| static const struct ramstage_loader_ops *loaders[] = { |
| #if CONFIG_VBOOT_VERIFY_FIRMWARE |
| &vboot_ramstage_loader, |
| #endif |
| &cbfs_ramstage_loader, |
| }; |
| |
| static const char *ramstage_name = CONFIG_CBFS_PREFIX "/coreboot_ram"; |
| static const uint32_t ramstage_id = CBMEM_ID_RAMSTAGE; |
| |
| static void |
| load_ramstage(const struct ramstage_loader_ops *ops, struct romstage_handoff *handoff) |
| { |
| const struct cbmem_entry *cbmem_entry; |
| void *entry_point; |
| |
| timestamp_add_now(TS_START_COPYRAM); |
| entry_point = ops->load(ramstage_id, ramstage_name, &cbmem_entry); |
| |
| if (entry_point == NULL) |
| return; |
| |
| cache_loaded_ramstage(handoff, cbmem_entry, entry_point); |
| |
| timestamp_add_now(TS_END_COPYRAM); |
| |
| stage_exit(entry_point); |
| } |
| |
| static void run_ramstage_from_resume(struct romstage_handoff *handoff) |
| { |
| void *entry; |
| const struct cbmem_entry *cbmem_entry; |
| |
| if (handoff != NULL && handoff->s3_resume) { |
| cbmem_entry = cbmem_entry_find(ramstage_id); |
| |
| /* No place to load ramstage. */ |
| if (cbmem_entry == NULL) |
| return; |
| |
| /* Load the cached ramstage to runtime location. */ |
| entry = load_cached_ramstage(handoff, cbmem_entry); |
| |
| if (entry != NULL) { |
| print_debug("Jumping to image.\n"); |
| stage_exit(entry); |
| } |
| } |
| } |
| |
| void run_ramstage(void) |
| { |
| struct romstage_handoff *handoff; |
| const struct ramstage_loader_ops *ops; |
| int i; |
| |
| handoff = romstage_handoff_find_or_add(); |
| |
| run_ramstage_from_resume(handoff); |
| |
| for (i = 0; i < ARRAY_SIZE(loaders); i++) { |
| ops = loaders[i]; |
| printk(BIOS_DEBUG, "Trying %s ramstage loader.\n", ops->name); |
| load_ramstage(ops, handoff); |
| } |
| |
| die("Ramstage was not loaded!\n"); |
| } |