| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <cbfs.h> |
| #include <cbmem.h> |
| #include <console/console.h> |
| #include <fallback.h> |
| #include <halt.h> |
| #include <lib.h> |
| #include <program_loading.h> |
| #include <reset.h> |
| #include <rmodule.h> |
| #include <stage_cache.h> |
| #include <symbols.h> |
| #include <thread.h> |
| #include <timestamp.h> |
| #include <security/vboot/vboot_common.h> |
| |
| void run_romstage(void) |
| { |
| struct prog romstage = |
| PROG_INIT(PROG_ROMSTAGE, CONFIG_CBFS_PREFIX "/romstage"); |
| |
| vboot_run_logic(); |
| |
| timestamp_add_now(TS_COPYROM_START); |
| |
| if (ENV_X86 && CONFIG(BOOTBLOCK_NORMAL)) { |
| if (legacy_romstage_select_and_load(&romstage) != CB_SUCCESS) |
| goto fail; |
| } else { |
| if (cbfs_prog_stage_load(&romstage)) |
| goto fail; |
| } |
| |
| timestamp_add_now(TS_COPYROM_END); |
| |
| console_time_report(); |
| |
| prog_run(&romstage); |
| |
| fail: |
| if (CONFIG(BOOTBLOCK_CONSOLE)) |
| die_with_post_code(POST_INVALID_ROM, |
| "Couldn't load romstage.\n"); |
| halt(); |
| } |
| |
| int __weak prog_locate_hook(struct prog *prog) { return 0; } |
| |
| static void run_ramstage_from_resume(struct prog *ramstage) |
| { |
| /* Load the cached ramstage to runtime location. */ |
| stage_cache_load_stage(STAGE_RAMSTAGE, ramstage); |
| |
| ramstage->cbfs_type = CBFS_TYPE_STAGE; |
| prog_set_arg(ramstage, cbmem_top()); |
| |
| if (prog_entry(ramstage) != NULL) { |
| printk(BIOS_DEBUG, "Jumping to image.\n"); |
| prog_run(ramstage); |
| } |
| |
| printk(BIOS_ERR, "ramstage cache invalid.\n"); |
| board_reset(); |
| } |
| |
| static int load_relocatable_ramstage(struct prog *ramstage) |
| { |
| struct rmod_stage_load rmod_ram = { |
| .cbmem_id = CBMEM_ID_RAMSTAGE, |
| .prog = ramstage, |
| }; |
| |
| return rmodule_stage_load(&rmod_ram); |
| } |
| void preload_ramstage(void) |
| { |
| if (!CONFIG(CBFS_PRELOAD)) |
| return; |
| |
| printk(BIOS_DEBUG, "Preloading ramstage\n"); |
| |
| cbfs_preload(CONFIG_CBFS_PREFIX "/ramstage"); |
| } |
| void run_ramstage(void) |
| { |
| struct prog ramstage = |
| PROG_INIT(PROG_RAMSTAGE, CONFIG_CBFS_PREFIX "/ramstage"); |
| |
| if (ENV_POSTCAR) |
| timestamp_add_now(TS_POSTCAR_END); |
| |
| /* Call "end of romstage" here if postcar stage doesn't exist */ |
| if (ENV_ROMSTAGE) |
| timestamp_add_now(TS_ROMSTAGE_END); |
| |
| /* |
| * Only x86 systems using ramstage stage cache currently take the same |
| * firmware path on resume. |
| */ |
| if (ENV_X86 && resume_from_stage_cache()) |
| run_ramstage_from_resume(&ramstage); |
| |
| vboot_run_logic(); |
| |
| timestamp_add_now(TS_COPYRAM_START); |
| |
| if (ENV_X86) { |
| if (load_relocatable_ramstage(&ramstage)) |
| goto fail; |
| } else { |
| if (cbfs_prog_stage_load(&ramstage)) |
| goto fail; |
| } |
| |
| stage_cache_add(STAGE_RAMSTAGE, &ramstage); |
| |
| timestamp_add_now(TS_COPYRAM_END); |
| |
| console_time_report(); |
| |
| /* This overrides the arg fetched from the relocatable module */ |
| prog_set_arg(&ramstage, cbmem_top()); |
| |
| prog_run(&ramstage); |
| |
| fail: |
| die_with_post_code(POST_INVALID_ROM, "Ramstage was not loaded!\n"); |
| } |
| |
| #if ENV_PAYLOAD_LOADER // gc-sections should take care of this |
| |
| static struct prog global_payload = |
| PROG_INIT(PROG_PAYLOAD, CONFIG_CBFS_PREFIX "/payload"); |
| |
| void payload_preload(void) |
| { |
| if (!CONFIG(CBFS_PRELOAD)) |
| return; |
| |
| cbfs_preload(global_payload.name); |
| } |
| |
| void payload_load(void) |
| { |
| struct prog *payload = &global_payload; |
| void *mapping; |
| |
| timestamp_add_now(TS_LOAD_PAYLOAD); |
| |
| if (prog_locate_hook(payload)) |
| goto out; |
| |
| payload->cbfs_type = CBFS_TYPE_QUERY; |
| mapping = cbfs_type_map(prog_name(payload), NULL, &payload->cbfs_type); |
| |
| if (!mapping) |
| goto out; |
| |
| switch (prog_cbfs_type(payload)) { |
| case CBFS_TYPE_SELF: /* Simple ELF */ |
| selfload_mapped(payload, mapping, BM_MEM_RAM); |
| break; |
| case CBFS_TYPE_FIT: /* Flattened image tree */ |
| if (CONFIG(PAYLOAD_FIT_SUPPORT)) { |
| fit_payload(payload, mapping); |
| break; |
| } |
| __fallthrough; |
| default: |
| die_with_post_code(POST_INVALID_ROM, |
| "Unsupported payload type %d.\n", payload->cbfs_type); |
| break; |
| } |
| |
| cbfs_unmap(mapping); |
| out: |
| if (prog_entry(payload) == NULL) |
| die_with_post_code(POST_INVALID_ROM, "Payload not loaded.\n"); |
| } |
| |
| void payload_run(void) |
| { |
| struct prog *payload = &global_payload; |
| |
| /* Reset to booting from this image as late as possible */ |
| boot_successful(); |
| |
| printk(BIOS_DEBUG, "Jumping to boot code at %p(%p)\n", |
| prog_entry(payload), prog_entry_arg(payload)); |
| |
| post_code(POST_ENTER_ELF_BOOT); |
| |
| timestamp_add_now(TS_SELFBOOT_JUMP); |
| |
| /* Before we go off to run the payload, see if |
| * we stayed within our bounds. |
| */ |
| checkstack(_estack, 0); |
| |
| prog_run(payload); |
| } |
| |
| #endif |