diff options
Diffstat (limited to 'src/vendorcode/google/chromeos/vboot2/vboot_loader.c')
| -rw-r--r-- | src/vendorcode/google/chromeos/vboot2/vboot_loader.c | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/src/vendorcode/google/chromeos/vboot2/vboot_loader.c b/src/vendorcode/google/chromeos/vboot2/vboot_loader.c deleted file mode 100644 index b76d20bebe..0000000000 --- a/src/vendorcode/google/chromeos/vboot2/vboot_loader.c +++ /dev/null @@ -1,159 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright 2015 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. - */ - -#include <arch/early_variables.h> -#include <cbfs.h> -#include <cbmem.h> -#include <console/console.h> -#include <rmodule.h> -#include <rules.h> -#include <string.h> -#include "misc.h" -#include "../vboot_common.h" -#include "../symbols.h" - -/* The stage loading code is compiled and entered from multiple stages. The - * helper functions below attempt to provide more clarity on when certain - * code should be called. */ - -static int verification_should_run(void) -{ - if (ENV_VERSTAGE && IS_ENABLED(CONFIG_SEPARATE_VERSTAGE)) - return 1; - - if (!IS_ENABLED(CONFIG_SEPARATE_VERSTAGE)) { - if (ENV_ROMSTAGE && - IS_ENABLED(CONFIG_VBOOT_STARTS_IN_ROMSTAGE)) - return 1; - if (ENV_BOOTBLOCK && - IS_ENABLED(CONFIG_VBOOT_STARTS_IN_BOOTBLOCK)) - return 1; - } - - return 0; -} - -static int verstage_should_load(void) -{ - if (!IS_ENABLED(CONFIG_SEPARATE_VERSTAGE)) - return 0; - - if (ENV_ROMSTAGE && IS_ENABLED(CONFIG_VBOOT_STARTS_IN_ROMSTAGE)) - return 1; - - if (ENV_BOOTBLOCK && IS_ENABLED(CONFIG_VBOOT_STARTS_IN_BOOTBLOCK)) - return 1; - - return 0; -} - -static int vboot_executed CAR_GLOBAL; - -int vb2_logic_executed(void) -{ - /* If this stage is supposed to run the vboot logic ensure it has been - * executed. */ - if (verification_should_run() && car_get_var(vboot_executed)) - return 1; - - /* If this stage is supposed to load verstage and verstage is returning - * back to the calling stage check that it has been executed. */ - if (verstage_should_load() && IS_ENABLED(CONFIG_RETURN_FROM_VERSTAGE)) - if (car_get_var(vboot_executed)) - return 1; - - /* Handle all other stages post vboot execution. */ - if (!ENV_BOOTBLOCK) { - if (IS_ENABLED(CONFIG_VBOOT_STARTS_IN_BOOTBLOCK)) - return 1; - if (IS_ENABLED(CONFIG_VBOOT_STARTS_IN_ROMSTAGE) && - !ENV_ROMSTAGE) - return 1; - } - - return 0; -} - -static void vboot_prepare(void) -{ - if (verification_should_run()) { - verstage_main(); - car_set_var(vboot_executed, 1); - vb2_save_recovery_reason_vbnv(); - } else if (verstage_should_load()) { - struct cbfsf file; - struct prog verstage = - PROG_INIT(PROG_VERSTAGE, - CONFIG_CBFS_PREFIX "/verstage"); - - printk(BIOS_DEBUG, "VBOOT: Loading verstage.\n"); - - /* load verstage from RO */ - if (cbfs_boot_locate(&file, prog_name(&verstage), NULL)) - die("failed to load verstage"); - - cbfs_file_data(prog_rdev(&verstage), &file); - - if (cbfs_prog_stage_load(&verstage)) - die("failed to load verstage"); - - /* verify and select a slot */ - prog_run(&verstage); - - /* This is not actually possible to hit this condition at - * runtime, but this provides a hint to the compiler for dead - * code elimination below. */ - if (!IS_ENABLED(CONFIG_RETURN_FROM_VERSTAGE)) - return; - - car_set_var(vboot_executed, 1); - } - - /* - * Fill in vboot cbmem objects before moving to ramstage so all - * downstream users have access to vboot results. This path only - * applies to platforms employing VBOOT_DYNAMIC_WORK_BUFFER because - * cbmem comes online prior to vboot verification taking place. For - * other platforms the vboot cbmem objects are initialized when - * cbmem comes online. - */ - if (ENV_ROMSTAGE && IS_ENABLED(CONFIG_VBOOT_DYNAMIC_WORK_BUFFER)) { - vb2_store_selected_region(); - vboot_fill_handoff(); - } -} - -static int vboot_locate(struct cbfs_props *props) -{ - struct region selected_region; - - /* Don't honor vboot results until the vboot logic has run. */ - if (!vb2_logic_executed()) - return -1; - - if (vb2_get_selected_region(&selected_region)) - return -1; - - props->offset = region_offset(&selected_region); - props->size = region_sz(&selected_region); - - return 0; -} - -const struct cbfs_locator vboot_locator = { - .name = "VBOOT", - .prepare = vboot_prepare, - .locate = vboot_locate, -}; |