nvidia/tegra210: add new SoC

This includes Chrome OS downstream up to Change-Id: Ic89ed54c.

Change-Id: I81853434600390d643160fe57554495b2bfe60ab
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10633
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 89 insertions, 0 deletions

diff --git a/src/soc/nvidia/tegra210/mtc.c b/src/soc/nvidia/tegra210/mtc.c
new file mode 100644
index 0000000000..fb6c9cbdd7
--- /dev/null
+++ b/src/soc/nvidia/tegra210/mtc.c
@@ -0,0 +1,89 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc.
+ */
+
+#include <cbfs.h>
+#include <cbmem.h>
+#include <console/console.h>
+#include <soc/mtc.h>
+#include <string.h>
+
+static size_t mtc_table_size;
+
+#define MAX_MTC_TABLE_ENTRIES	20
+#define MTC_TABLE_ENTRY_SIZE	4880
+#define MTC_TABLE_MAX_SIZE	(MAX_MTC_TABLE_ENTRIES * MTC_TABLE_ENTRY_SIZE)
+
+int tegra210_run_mtc(void)
+{
+	ssize_t nread;
+	struct region_device fh;
+
+	void * const mtc = (void *)(uintptr_t)CONFIG_MTC_ADDRESS;
+	void *dvfs_table;
+	size_t (*mtc_fw)(void **dvfs_table) = (void *)mtc;
+
+	if (cbfs_boot_locate(&fh, "tegra_mtc.bin", NULL)) {
+		printk(BIOS_ERR, "MTC file not found: tegra_mtc.bin\n");
+		return -1;
+	}
+
+	/* Read MTC file into predefined region. */
+	nread = rdev_readat(&fh, mtc, 0, region_device_sz(&fh));
+
+	if (nread != region_device_sz(&fh)) {
+		printk(BIOS_ERR, "MTC bytes read (%zu) != file length(%zu)!\n",
+		       nread, region_device_sz(&fh));
+		return -1;
+	}
+
+	printk(BIOS_INFO, "MTC: %zu bytes loaded @ %p\n", nread, mtc);
+
+	mtc_table_size = (*mtc_fw)(&dvfs_table);
+
+	if ((mtc_table_size == 0) || (mtc_table_size > MTC_TABLE_MAX_SIZE)) {
+		printk(BIOS_ERR, "MTC Training table size is invalid.!\n");
+		return -1;
+	}
+
+	printk(BIOS_INFO, "MTC: Done. Entries size 0x%zx located at %p\n",
+	       mtc_table_size, dvfs_table);
+
+	void *cbmem_tab = cbmem_add(CBMEM_ID_MTC, mtc_table_size);
+	if (cbmem_tab == NULL) {
+		printk(BIOS_ERR, "MTC table allocation in cbmem failed!\n");
+		return -1;
+	}
+
+	memcpy(cbmem_tab, dvfs_table, mtc_table_size);
+	printk(BIOS_INFO, "MTC: Copied 0x%zx bytes from %p to %p\n",
+	       mtc_table_size, dvfs_table, cbmem_tab);
+
+	return 0;
+}
+
+void soc_add_mtc(struct lb_header *header)
+{
+	struct lb_range *mtc;
+	mtc = (struct lb_range *)lb_new_record(header);
+	mtc->tag = LB_TAG_MTC;
+	mtc->size = sizeof(*mtc);
+
+	mtc->range_start = (uintptr_t)cbmem_find(CBMEM_ID_MTC);
+	mtc->range_size = mtc_table_size;
+}