39303d5d49
Change-Id: I21680354f33916b7b4d913f51a842b5d6c2ecef3 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/27408 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2015 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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#include <cbfs.h>
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#include <cbmem.h>
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#include <console/console.h>
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#include <soc/mtc.h>
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#include <string.h>
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static size_t mtc_table_size;
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#define MAX_MTC_TABLE_ENTRIES 20
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#define MTC_TABLE_ENTRY_SIZE 4880
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#define MTC_TABLE_MAX_SIZE (MAX_MTC_TABLE_ENTRIES * MTC_TABLE_ENTRY_SIZE)
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int tegra210_run_mtc(void)
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{
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ssize_t nread;
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struct region_device fh;
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struct cbfsf mtc_file;
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void *const mtc = (void *)(uintptr_t)CONFIG_MTC_ADDRESS;
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void *dvfs_table;
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size_t (*mtc_fw)(void **dvfs_table) = (void *)mtc;
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if (cbfs_boot_locate(&mtc_file, "tegra_mtc.bin", NULL)) {
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printk(BIOS_ERR, "MTC file not found: tegra_mtc.bin\n");
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return -1;
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}
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cbfs_file_data(&fh, &mtc_file);
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/* Read MTC file into predefined region. */
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nread = rdev_readat(&fh, mtc, 0, region_device_sz(&fh));
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if (nread != region_device_sz(&fh)) {
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printk(BIOS_ERR, "MTC bytes read (%zu) != file length(%zu)!\n",
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nread, region_device_sz(&fh));
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return -1;
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}
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printk(BIOS_INFO, "MTC: %zu bytes loaded @ %p\n", nread, mtc);
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mtc_table_size = (*mtc_fw)(&dvfs_table);
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if ((mtc_table_size == 0) || (mtc_table_size > MTC_TABLE_MAX_SIZE)) {
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printk(BIOS_ERR, "MTC Training table size is invalid.!\n");
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return -1;
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}
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printk(BIOS_INFO, "MTC: Done. Entries size 0x%zx located at %p\n",
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mtc_table_size, dvfs_table);
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void *cbmem_tab = cbmem_add(CBMEM_ID_MTC, mtc_table_size);
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if (cbmem_tab == NULL) {
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printk(BIOS_ERR, "MTC table allocation in cbmem failed!\n");
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return -1;
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}
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memcpy(cbmem_tab, dvfs_table, mtc_table_size);
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printk(BIOS_INFO, "MTC: Copied 0x%zx bytes from %p to %p\n",
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mtc_table_size, dvfs_table, cbmem_tab);
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return 0;
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}
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void soc_add_mtc(struct lb_header *header)
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{
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struct lb_range *mtc;
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mtc = (struct lb_range *)lb_new_record(header);
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mtc->tag = LB_TAG_MTC;
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mtc->size = sizeof(*mtc);
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mtc->range_start = (uintptr_t)cbmem_find(CBMEM_ID_MTC);
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mtc->range_size = mtc_table_size;
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}
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