static void vboot_prepare(void) { int run_verification; run_verification = verification_should_run(); if (run_verification) { verstage_main(); car_set_var(vboot_executed, 1); } 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 void vboot_prepare(void) { if (verification_should_run()) { /* Note: this path is not used for VBOOT_RETURN_FROM_VERSTAGE */ verstage_main(); car_set_var(vboot_executed, 1); vb2_save_recovery_reason_vbnv(); /* * Avoid double memory retrain when the EC is running RW code * and a recovery request came in through an EC host event. The * double retrain happens because the EC won't be rebooted * until kernel verification notices the EC isn't running RO * code which is after memory training. Therefore, reboot the * EC after we've saved the potential recovery request so it's * not lost. Lastly, only perform this sequence on x86 * platforms since those are the ones that currently do a * costly memory training in recovery mode. */ if (IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) && IS_ENABLED(CONFIG_ARCH_X86)) google_chromeec_early_init(); } 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_VBOOT_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_STARTS_IN_ROMSTAGE 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_STARTS_IN_ROMSTAGE)) { vb2_store_selected_region(); vboot_fill_handoff(); } }