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, 191 insertions, 0 deletions

diff --git a/src/soc/nvidia/tegra210/soc.c b/src/soc/nvidia/tegra210/soc.c
new file mode 100644
index 0000000000..f3290c3ac6
--- /dev/null
+++ b/src/soc/nvidia/tegra210/soc.c
@@ -0,0 +1,191 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 The ChromiumOS Authors.  All rights reserved.
+ * Copyright 2014 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 <arch/io.h>
+#include <arch/cache.h>
+#include <arch/spintable.h>
+#include <cpu/cpu.h>
+#include <bootstate.h>
+#include <cbmem.h>
+#include <console/console.h>
+#include <device/device.h>
+#include <soc/nvidia/tegra/dc.h>
+#include <soc/addressmap.h>
+#include <soc/clock.h>
+#include <soc/cpu.h>
+#include <soc/mc.h>
+#include <soc/mtc.h>
+#include <soc/nvidia/tegra/apbmisc.h>
+#include <string.h>
+#include <timer.h>
+#include <vendorcode/google/chromeos/chromeos.h>
+
+#include "chip.h"
+
+static void soc_read_resources(device_t dev)
+{
+	unsigned long index = 0;
+	int i; uintptr_t begin, end;
+	size_t size;
+
+	for (i = 0; i < CARVEOUT_NUM; i++) {
+		carveout_range(i, &begin, &size);
+		if (size == 0)
+			continue;
+		reserved_ram_resource(dev, index++, begin * KiB, size * KiB);
+	}
+
+	memory_in_range_below_4gb(&begin, &end);
+	size = end - begin;
+	ram_resource(dev, index++, begin * KiB, size * KiB);
+
+	memory_in_range_above_4gb(&begin, &end);
+	size = end - begin;
+	ram_resource(dev, index++, begin * KiB, size * KiB);
+}
+
+static size_t cntrl_total_cpus(void)
+{
+	return CONFIG_MAX_CPUS;
+}
+
+static int cntrl_start_cpu(unsigned int id, void (*entry)(void))
+{
+	if (id >= CONFIG_MAX_CPUS)
+		return -1;
+	start_cpu(id, entry);
+	return 0;
+}
+
+static struct cpu_control_ops cntrl_ops = {
+	.total_cpus = cntrl_total_cpus,
+	.start_cpu = cntrl_start_cpu,
+};
+
+
+static void lock_down_vpr(void)
+{
+	struct tegra_mc_regs *regs = (void *)(uintptr_t)TEGRA_MC_BASE;
+
+	write32(&regs->video_protect_bom, 0);
+	write32(&regs->video_protect_size_mb, 0);
+
+	write32(&regs->video_protect_gpu_override_0, 1);
+	/*
+	 * Set both _ACCESS bits so that kernel/secure code
+	 * can reconfig VPR careveout as needed from the TrustZone.
+	 */
+
+	write32(&regs->video_protect_reg_ctrl,
+		(MC_VPR_WR_ACCESS_DISABLE | MC_VPR_ALLOW_TZ_WR_ACCESS_ENABLE));
+}
+
+static void soc_init(device_t dev)
+{
+	struct soc_nvidia_tegra210_config *cfg;
+
+	clock_init_arm_generic_timer();
+
+	cfg = dev->chip_info;
+	spintable_init((void *)cfg->spintable_addr);
+	arch_initialize_cpus(dev, &cntrl_ops);
+
+	/* Lock down VPR */
+	lock_down_vpr();
+
+#if IS_ENABLED(CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT)
+	if (vboot_skip_display_init())
+		printk(BIOS_INFO, "Skipping display init.\n");
+	else
+		display_startup(dev);
+#endif
+}
+
+static void soc_noop(device_t dev)
+{
+}
+
+static struct device_operations soc_ops = {
+	.read_resources   = soc_read_resources,
+	.set_resources    = soc_noop,
+	.enable_resources = soc_noop,
+	.init             = soc_init,
+	.scan_bus         = NULL,
+};
+
+static void enable_tegra210_dev(device_t dev)
+{
+	if (dev->path.type == DEVICE_PATH_CPU_CLUSTER)
+		dev->ops = &soc_ops;
+}
+
+static void tegra210_init(void *chip_info)
+{
+	struct tegra_revision rev;
+
+	tegra_revision_info(&rev);
+
+	printk(BIOS_INFO, "chip %x rev %02x.%x\n",
+		rev.chip_id, rev.major, rev.minor);
+}
+
+struct chip_operations soc_nvidia_tegra210_ops = {
+	CHIP_NAME("SOC Nvidia Tegra210")
+	.init = tegra210_init,
+	.enable_dev = enable_tegra210_dev,
+};
+
+static void tegra210_cpu_init(device_t cpu)
+{
+	if (cpu_is_bsp())
+		if (tegra210_run_mtc() != 0)
+			printk(BIOS_ERR, "MTC: Training failed\n");
+}
+
+static const struct cpu_device_id ids[] = {
+	{ 0x411fd071 },
+	{ CPU_ID_END },
+};
+
+static struct device_operations cpu_dev_ops = {
+	.init = tegra210_cpu_init,
+};
+
+static const struct cpu_driver driver __cpu_driver = {
+	.ops      = &cpu_dev_ops,
+	.id_table = ids,
+};
+
+static void enable_plld(void *unused)
+{
+	/*
+	 * Configure a conservative 300MHz clock for PLLD. The kernel cannot
+	 * handle PLLD not being configured so enable PLLD unconditionally
+	 * with a default clock rate.
+	 */
+	clock_configure_plld(300 * MHz);
+}
+
+/*
+ * The PLLD being enabled is done at BS_DEV_INIT  time because mainboard_init()
+ * is the first thing called. This ensures PLLD is up and functional before
+ * anything that mainboard can do that implicitly relies on PLLD.
+ */
+BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_ENTRY, enable_plld, NULL);