Exemple #1
0
void * asmlinkage romstage_main(unsigned long bist)
{
    int i;
    void *romstage_stack_after_car;
    const int num_guards = 4;
    const u32 stack_guard = 0xdeadbeef;
    u32 *stack_base = (void *)(CONFIG_DCACHE_RAM_BASE +
                               CONFIG_DCACHE_RAM_SIZE -
                               DCACHE_RAM_ROMSTAGE_STACK_SIZE);

    for (i = 0; i < num_guards; i++)
        stack_base[i] = stack_guard;

    mainboard_romstage_entry(bist);

    /* Check the stack. */
    for (i = 0; i < num_guards; i++) {
        if (stack_base[i] == stack_guard)
            continue;
        printk(BIOS_DEBUG, "Smashed stack detected in romstage!\n");
    }

    /* Get the stack to use after cache-as-ram is torn down. */
    if (IS_ENABLED(CONFIG_LATE_CBMEM_INIT))
        romstage_stack_after_car = (void*)CONFIG_RAMTOP;
    else
        romstage_stack_after_car = setup_stack_and_mtrrs();

    return romstage_stack_after_car;
}
Exemple #2
0
asmlinkage void *romstage_main(FSP_INFO_HEADER *fih)
{
	void *top_of_stack;
	struct pei_data pei_data;
	struct romstage_params params = {
		.pei_data = &pei_data,
		.chipset_context = fih,
	};

	post_code(0x30);

	timestamp_add_now(TS_START_ROMSTAGE);

	/* Load microcode before RAM init */
	if (IS_ENABLED(CONFIG_SUPPORT_CPU_UCODE_IN_CBFS))
		intel_update_microcode_from_cbfs();

	memset(&pei_data, 0, sizeof(pei_data));

	/* Display parameters */
	printk(BIOS_SPEW, "CONFIG_MMCONF_BASE_ADDRESS: 0x%08x\n",
		CONFIG_MMCONF_BASE_ADDRESS);
	printk(BIOS_INFO, "Using FSP 1.1\n");

	/* Display FSP banner */
	print_fsp_info(fih);

	/* Stash FSP version. */
	params.fsp_version = fsp_version(fih);

	/* Get power state */
	params.power_state = fill_power_state();

	/*
	 * Read and print board version.  Done after SOC romstage
	 * in case PCH needs to be configured to talk to the EC.
	 */
	if (IS_ENABLED(CONFIG_BOARD_ID_AUTO))
		printk(BIOS_INFO, "MLB: board version %d\n", board_id());

	/* Call into mainboard. */
	mainboard_romstage_entry(&params);
	soc_after_ram_init(&params);
	post_code(0x38);

	top_of_stack = setup_stack_and_mtrrs();

	printk(BIOS_DEBUG, "Calling FspTempRamExit API\n");
	timestamp_add_now(TS_FSP_TEMP_RAM_EXIT_START);
	return top_of_stack;
}