From 0a5971c91bac57970e3f3229b8cda735a17b3a67 Mon Sep 17 00:00:00 2001 From: Brenton Dong Date: Tue, 18 Oct 2016 11:35:15 -0700 Subject: drivers/intel/fsp2_0: add FSP TempRamInit & TempRamExit API support FSP v2.0 Specification adds APIs TempRamInit & TempRamExit for Cache-As-Ram initialization and teardown. Add fsp2_0 driver support for TempRamInit & TempRamExit APIs. Verified on Intel Leaf Hill CRB and confirmed that Cache-As-Ram is correctly set up and torn down using the FSP v2.0 APIs without coreboot implementation of CAR init/teardown. Change-Id: I482ff580e1b5251a8214fe2e3d2d38bd5f3e3ed2 Signed-off-by: Brenton Dong Reviewed-on: https://review.coreboot.org/17062 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/drivers/intel/fsp2_0/temp_ram_exit.c | 49 ++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 src/drivers/intel/fsp2_0/temp_ram_exit.c (limited to 'src/drivers/intel/fsp2_0/temp_ram_exit.c') diff --git a/src/drivers/intel/fsp2_0/temp_ram_exit.c b/src/drivers/intel/fsp2_0/temp_ram_exit.c new file mode 100644 index 0000000000..21eb367e8c --- /dev/null +++ b/src/drivers/intel/fsp2_0/temp_ram_exit.c @@ -0,0 +1,49 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2015 Intel Corp. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +void fsp_temp_ram_exit(void) +{ + struct fsp_header hdr; + uint32_t status; + temp_ram_exit_fn temp_ram_exit; + struct cbfsf file_desc; + struct region_device file_data; + const char *name = CONFIG_FSP_M_CBFS; + + if (cbfs_boot_locate(&file_desc, name, NULL)) { + printk(BIOS_CRIT, "Could not locate %s in CBFS\n", name); + die("FSPM not available for CAR Exit!\n"); + } + + cbfs_file_data(&file_data, &file_desc); + + if (fsp_validate_component(&hdr, &file_data) != CB_SUCCESS) + die("Invalid FSPM header!\n"); + + temp_ram_exit = (void *)(hdr.image_base + hdr.temp_ram_exit_entry); + printk(BIOS_DEBUG, "Calling TempRamExit: 0x%p\n", temp_ram_exit); + status = temp_ram_exit(NULL); + + if (status != FSP_SUCCESS) { + printk(BIOS_CRIT, "TempRamExit returned 0x%08x\n", status); + die("TempRamExit returned an error!\n"); + } +} -- cgit v1.2.3