79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
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/*
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* This file is part of the coreboot project.
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*
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* Copyright 2014 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <cbfs.h>
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#include <string.h>
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#include <arch/cache.h>
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#include <soc/soc_services.h>
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#include <console/console.h>
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#include "mbn_header.h"
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static struct mbn_header *map_ipq_blob(const char *file_name)
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{
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struct cbfs_file *blob_file;
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struct mbn_header *blob_mbn;
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blob_file = cbfs_get_file(CBFS_DEFAULT_MEDIA, file_name);
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if (!blob_file)
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return NULL;
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blob_mbn = (struct mbn_header *)((uintptr_t)blob_file +
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ntohl(blob_file->offset));
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/* some sanity checks on the headers */
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if ((blob_mbn->mbn_version != 3) ||
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(blob_mbn->mbn_total_size > ntohl(blob_file->len)))
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return NULL;
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return blob_mbn;
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}
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int initialize_dram(void)
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{
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struct mbn_header *cdt_mbn;
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struct mbn_header *ddr_mbn;
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int (*ddr_init_function)(void *cdt_header);
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cdt_mbn = map_ipq_blob("cdt.mbn");
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ddr_mbn = map_ipq_blob("ddr.mbn");
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if (!cdt_mbn || !ddr_mbn) {
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printk(BIOS_ERR, "cdt.mbn: %p, ddr.mbn: %p\n",
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cdt_mbn, ddr_mbn);
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die("could not find DDR initialization blobs\n");
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}
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/* Actual area where DDR init is going to be running */
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ddr_init_function = (int (*)(void *))ddr_mbn->mbn_destination;
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/* Copy core into the appropriate memory location. */
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memcpy(ddr_init_function, ddr_mbn + 1, ddr_mbn->mbn_total_size);
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cache_sync_instructions();
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if (ddr_init_function(cdt_mbn + 1) < 0) /* Skip mbn header. */
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die("Fail to Initialize DDR\n");
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printk(BIOS_INFO, "DDR initialized\n");
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return 0;
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}
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