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 vb2_store_selected_region_cbmem(int unused)
{
vb2_store_selected_region();
}
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();
}
}
