Exemplo n.º 1
0
asmlinkage void car_stage_entry(void)
{
	bool s3wake;
	struct postcar_frame pcf;
	uintptr_t top_of_ram;
	struct chipset_power_state *ps = pmc_get_power_state();

	console_init();

	/* Program MCHBAR, DMIBAR, GDXBAR and EDRAMBAR */
	systemagent_early_init();
	/* initialize Heci interface */
	heci_init(HECI1_BASE_ADDRESS);

	timestamp_add_now(TS_START_ROMSTAGE);
	s3wake = pmc_fill_power_state(ps) == ACPI_S3;
	fsp_memory_init(s3wake);
	pmc_set_disb();
	if (!s3wake)
		save_dimm_info();
	if (postcar_frame_init(&pcf, 1 * KiB))
		die("Unable to initialize postcar frame.\n");

	/*
	 * We need to make sure ramstage will be run cached. At this
	 * point exact location of ramstage in cbmem is not known.
	 * Instruct postcar to cache 16 megs under cbmem top which is
	 * a safe bet to cover ramstage.
	 */
	top_of_ram = (uintptr_t) cbmem_top();
	printk(BIOS_DEBUG, "top_of_ram = 0x%lx\n", top_of_ram);
	top_of_ram -= 16*MiB;
	postcar_frame_add_mtrr(&pcf, top_of_ram, 16*MiB, MTRR_TYPE_WRBACK);

	/* Cache the ROM as WP just below 4GiB. */
	postcar_frame_add_romcache(&pcf, MTRR_TYPE_WRPROT);

	run_postcar_phase(&pcf);
}
Exemplo n.º 2
0
asmlinkage void car_stage_entry(void)
{
	struct postcar_frame pcf;
	uintptr_t top_of_ram;
	bool s3wake;
	struct chipset_power_state *ps = pmc_get_power_state();
	void *smm_base;
	size_t smm_size, var_size;
	const void *new_var_data;
	uintptr_t tseg_base;

	timestamp_add_now(TS_START_ROMSTAGE);

	soc_early_romstage_init();

	console_init();

	s3wake = pmc_fill_power_state(ps) == ACPI_S3;
	fsp_memory_init(s3wake);

	if (punit_init())
		set_max_freq();
	else
		printk(BIOS_DEBUG, "Punit failed to initialize properly\n");

	/* Stash variable MRC data and let cache system update it later */
	new_var_data = fsp_find_extension_hob_by_guid(hob_variable_guid,
							&var_size);
	if (new_var_data)
		mrc_cache_stash_data(MRC_VARIABLE_DATA,
				car_get_var(fsp_version), new_var_data,
				var_size);
	else
		printk(BIOS_ERR, "Failed to determine variable data\n");

	if (postcar_frame_init(&pcf, 1*KiB))
		die("Unable to initialize postcar frame.\n");

	mainboard_save_dimm_info();

	/*
	 * We need to make sure ramstage will be run cached. At this point exact
	 * location of ramstage in cbmem is not known. Instruct postcar to cache
	 * 16 megs under cbmem top which is a safe bet to cover ramstage.
	 */
	top_of_ram = (uintptr_t) cbmem_top();
	/* cbmem_top() needs to be at least 16 MiB aligned */
	assert(ALIGN_DOWN(top_of_ram, 16*MiB) == top_of_ram);
	postcar_frame_add_mtrr(&pcf, top_of_ram - 16*MiB, 16*MiB,
		MTRR_TYPE_WRBACK);

	/* Cache the memory-mapped boot media. */
	postcar_frame_add_romcache(&pcf, MTRR_TYPE_WRPROT);

	/*
	* Cache the TSEG region at the top of ram. This region is
	* not restricted to SMM mode until SMM has been relocated.
	* By setting the region to cacheable it provides faster access
	* when relocating the SMM handler as well as using the TSEG
	* region for other purposes.
	*/
	smm_region_info(&smm_base, &smm_size);
	tseg_base = (uintptr_t)smm_base;
	postcar_frame_add_mtrr(&pcf, tseg_base, smm_size, MTRR_TYPE_WRBACK);

	run_postcar_phase(&pcf);
}