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authorAndrey Petrov <andrey.petrov@intel.com>2016-02-25 14:15:37 -0800
committerAaron Durbin <adurbin@chromium.org>2016-03-03 21:26:28 +0100
commit9738970c152600798407fd3f4e6703b2df277982 (patch)
tree41df47f0cacaa5c807d626d1b7864f4f576eee43
parentb37fd67e8757e2eaf3ae7dd453e9aaa1518e9439 (diff)
drivers/intel/fsp2_0: Add utility functions
This adds a set of utility functions that help load and identify FSP blobs. Change-Id: I1d23f60fd1dc8de7966142bcd793289220a1fa5e Signed-off-by: Andrey Petrov <andrey.petrov@intel.com> Reviewed-on: https://review.coreboot.org/13797 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
-rw-r--r--src/drivers/intel/fsp2_0/util.c123
1 files changed, 123 insertions, 0 deletions
diff --git a/src/drivers/intel/fsp2_0/util.c b/src/drivers/intel/fsp2_0/util.c
new file mode 100644
index 0000000000..4fd4f689a3
--- /dev/null
+++ b/src/drivers/intel/fsp2_0/util.c
@@ -0,0 +1,123 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Intel Corp.
+ * (Written by Alexandru Gagniuc <alexandrux.gagniuc@intel.com> for Intel Corp.)
+ * (Written by Andrey Petrov <andrey.petrov@intel.com> for 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 <arch/io.h>
+#include <cbfs.h>
+#include <console/console.h>
+#include <fsp/util.h>
+#include <lib.h>
+#include <memrange.h>
+#include <string.h>
+
+static bool looks_like_fsp_header(const uint8_t *raw_hdr)
+{
+ if (memcmp(raw_hdr, FSP_HDR_SIGNATURE, 4)) {
+ printk(BIOS_ALERT, "Did not find a valid FSP signature\n");
+ return false;
+ }
+
+ if (read32(raw_hdr + 4) != FSP_HDR_LEN) {
+ printk(BIOS_ALERT, "FSP header has invalid length\n");
+ return false;
+ }
+
+ return true;
+}
+
+enum cb_err fsp_identify(struct fsp_header *hdr, const void *fsp_blob)
+{
+ const uint8_t *raw_hdr = fsp_blob;
+
+ if (!looks_like_fsp_header(raw_hdr))
+ return CB_ERR;
+
+ hdr->revision = read8(raw_hdr + 11);
+ hdr->fsp_revision = read32(raw_hdr + 12);
+ memcpy(hdr->image_id, raw_hdr + 16, ARRAY_SIZE(hdr->image_id));
+ hdr->image_id[ARRAY_SIZE(hdr->image_id) - 1] = '\0';
+ hdr->image_size = read32(raw_hdr + 24);
+ hdr->image_base = read32(raw_hdr + 28);
+ hdr->image_attribute = read32(raw_hdr + 32);
+ hdr->cfg_region_offset = read32(raw_hdr + 36);
+ hdr->cfg_region_size = read32(raw_hdr + 40);
+ hdr->notify_phase_entry_offset = read32(raw_hdr + 56);
+ hdr->memory_init_entry_offset = read32(raw_hdr + 60);
+ hdr->silicon_init_entry_offset = read32(raw_hdr + 68);
+
+ return CB_SUCCESS;
+}
+
+void fsp_print_header_info(const struct fsp_header *hdr)
+{
+ printk(BIOS_DEBUG, "Revision %u, image ID: %s, base 0x%lx + 0x%zx\n",
+ hdr->revision, hdr->image_id, hdr->image_base, hdr->image_size);
+ printk(BIOS_DEBUG, "\tConfig region 0x%zx + 0x%zx\n",
+ hdr->cfg_region_offset, hdr->cfg_region_size);
+
+ if (hdr->image_attribute & FSP_HDR_ATTRIB_FSPM) {
+ printk(BIOS_DEBUG, "\tMemory init offset 0x%zx\n",
+ hdr->memory_init_entry_offset);
+ }
+
+ if (hdr->image_attribute & FSP_HDR_ATTRIB_FSPS) {
+ printk(BIOS_DEBUG, "\tSilicon init offset 0x%zx\n",
+ hdr->silicon_init_entry_offset);
+ printk(BIOS_DEBUG, "\tNotify phase offset 0x%zx\n",
+ hdr->notify_phase_entry_offset);
+ }
+
+}
+
+enum cb_err fsp_load_binary(struct fsp_header *hdr,
+ const char *name,
+ struct range_entry *range)
+{
+ struct cbfsf file_desc;
+ struct region_device file_data;
+ void *membase;
+
+ if (cbfs_boot_locate(&file_desc, name, NULL)) {
+ printk(BIOS_ERR, "Could not locate %s in CBFS\n", name);
+ return CB_ERR;
+ }
+
+ cbfs_file_data(&file_data, &file_desc);
+
+ /* Map just enough of the file to be able to parse the header. */
+ membase = rdev_mmap(&file_data, FSP_HDR_OFFSET, FSP_HDR_LEN);
+ if (fsp_identify(hdr, membase) != CB_SUCCESS) {
+ printk(BIOS_ERR, "%s did not have a valid FSP header\n", name);
+ return CB_ERR;
+ }
+
+ fsp_print_header_info(hdr);
+
+ /* Check if size specified in the header matches the cbfs file size */
+ if (region_device_sz(&file_data) < hdr->image_size) {
+ printk(BIOS_ERR, "%s size bigger than cbfs file.\n", name);
+ return CB_ERR;
+ }
+
+ /* Check if the binary load address is within expected range */
+ if (range_entry_base(range) > hdr->image_base ||
+ range_entry_end(range) <= hdr->image_base + hdr->image_size) {
+ printk(BIOS_ERR, "%s is outside of allowed range\n", name);
+ return CB_ERR;
+ }
+
+ /* Load binary into memory. */
+ if (rdev_readat(&file_data, (void *)hdr->image_base, 0, hdr->image_size) < 0)
+ return CB_ERR;
+
+ return CB_SUCCESS;
+}