void run_ramstage(void)
{
struct prog ramstage =
PROG_INIT(ASSET_RAMSTAGE, CONFIG_CBFS_PREFIX "/ramstage");
/* Only x86 systems currently take the same firmware path on resume. */
if (IS_ENABLED(CONFIG_ARCH_X86) && IS_ENABLED(CONFIG_EARLY_CBMEM_INIT))
run_ramstage_from_resume(romstage_handoff_find_or_add(),
&ramstage);
if (prog_locate(&ramstage))
goto fail;
timestamp_add_now(TS_START_COPYRAM);
if (IS_ENABLED(CONFIG_RELOCATABLE_RAMSTAGE)) {
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_END_COPYRAM);
prog_run(&ramstage);
fail:
die("Ramstage was not loaded!\n");
}
void arm_tf_run_bl31(u64 payload_entry, u64 payload_arg0, u64 payload_spsr)
{
struct prog bl31 = PROG_INIT(ASSET_BL31, CONFIG_CBFS_PREFIX"/bl31");
void (*bl31_entry)(bl31_params_t *params, void *plat_params) = NULL;
if (prog_locate(&bl31))
die("BL31 not found");
if (cbfs_prog_stage_load(&bl31))
die("BL31 load failed");
bl31_entry = prog_entry(&bl31);
SET_PARAM_HEAD(&bl31_params, PARAM_BL31, VERSION_1, 0);
if (IS_ENABLED(CONFIG_ARM64_USE_SECURE_OS)) {
struct prog bl32 = PROG_INIT(ASSET_BL32, CONFIG_CBFS_PREFIX"/secure_os");
if (prog_locate(&bl32))
die("BL31 not found");
if (cbfs_prog_stage_load(&bl32))
die("BL31 load failed");
SET_PARAM_HEAD(&bl32_ep_info, PARAM_EP, VERSION_1, PARAM_EP_SECURE);
bl32_ep_info.pc = (uintptr_t)prog_entry(&bl32);
bl32_ep_info.spsr = SPSR_EXCEPTION_MASK | get_eret_el(EL1, SPSR_USE_L);
bl31_params.bl32_ep_info = &bl32_ep_info;
}
bl31_params.bl33_ep_info = &bl33_ep_info;
SET_PARAM_HEAD(&bl33_ep_info, PARAM_EP, VERSION_1, PARAM_EP_NON_SECURE);
bl33_ep_info.pc = payload_entry;
bl33_ep_info.spsr = payload_spsr;
bl33_ep_info.args.arg0 = payload_arg0;
/* May update bl31_params if necessary. Must flush all added structs. */
void *bl31_plat_params = soc_get_bl31_plat_params(&bl31_params);
dcache_clean_by_mva(&bl31_params, sizeof(bl31_params));
dcache_clean_by_mva(&bl33_ep_info, sizeof(bl33_ep_info));
dcache_mmu_disable();
bl31_entry(&bl31_params, bl31_plat_params);
die("BL31 returned!");
}
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();
}
}
void run_romstage(void)
{
struct prog romstage =
PROG_INIT(ASSET_ROMSTAGE, CONFIG_CBFS_PREFIX "/romstage");
if (prog_locate(&romstage))
goto fail;
timestamp_add_now(TS_START_COPYROM);
if (cbfs_prog_stage_load(&romstage))
goto fail;
timestamp_add_now(TS_END_COPYROM);
prog_run(&romstage);
fail:
if (IS_ENABLED(CONFIG_BOOTBLOCK_CONSOLE))
die("Couldn't load romstage.\n");
halt();
}
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();
}
}
