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, 122 insertions, 0 deletions

diff --git a/src/soc/nvidia/tegra210/ccplex.c b/src/soc/nvidia/tegra210/ccplex.c
new file mode 100644
index 0000000000..f3c61cbbe6
--- /dev/null
+++ b/src/soc/nvidia/tegra210/ccplex.c
@@ -0,0 +1,122 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * 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 <cbfs.h>
+#include <console/console.h>
+#include <soc/addressmap.h>
+#include <soc/clock.h>
+#include <soc/clk_rst.h>
+#include <soc/ccplex.h>
+#include <soc/cpu.h>
+#include <soc/flow.h>
+#include <soc/mc.h>
+#include <soc/pmc.h>
+#include <soc/power.h>
+#include <soc/romstage.h>
+#include <string.h>
+#include <timer.h>
+
+#define PMC_REGS (void *)(uintptr_t)(TEGRA_PMC_BASE)
+
+static void enable_cpu_clocks(void)
+{
+	clock_enable(CLK_ENB_CPU, 0, 0, SET_CLK_ENB_CPUG_ENABLE |
+		     SET_CLK_ENB_CPULP_ENABLE, 0, 0, 0);
+}
+
+static void enable_cpu_power_partitions(void)
+{
+	/* Bring up fast cluster, non-CPU, CPU0, CPU1, CPU2 and CPU3 parts. */
+	power_ungate_partition(POWER_PARTID_CRAIL);
+	power_ungate_partition(POWER_PARTID_C0NC);
+	power_ungate_partition(POWER_PARTID_CE0);
+	if (IS_ENABLED(CONFIG_ARM64_USE_SECURE_MONITOR)) {
+		power_ungate_partition(POWER_PARTID_CE1);
+		power_ungate_partition(POWER_PARTID_CE2);
+		power_ungate_partition(POWER_PARTID_CE3);
+	}
+
+	if (IS_ENABLED(CONFIG_ARM64_USE_ARM_TRUSTED_FIRMWARE)) {
+		/*
+		 * Deassert reset signal of all the secondary CPUs.
+		 * PMC and flow controller will take over the power sequence
+		 * controller in the ATF.
+		 */
+		uint32_t reg = CRC_RST_CPUG_CLR_CPU1 | CRC_RST_CPUG_CLR_DBG1 |
+			       CRC_RST_CPUG_CLR_CORE1 | CRC_RST_CPUG_CLR_CX1 |
+			       CRC_RST_CPUG_CLR_CPU2 | CRC_RST_CPUG_CLR_DBG2 |
+			       CRC_RST_CPUG_CLR_CORE2 | CRC_RST_CPUG_CLR_CX2 |
+			       CRC_RST_CPUG_CLR_CPU3 | CRC_RST_CPUG_CLR_DBG3 |
+			       CRC_RST_CPUG_CLR_CORE3 | CRC_RST_CPUG_CLR_CX3;
+		write32(CLK_RST_REG(rst_cpug_cmplx_clr), reg);
+	}
+}
+
+static void request_ram_repair(void)
+{
+	struct flow_ctlr * const flow = (void *)(uintptr_t)TEGRA_FLOW_BASE;
+	const uint32_t req = 1 << 0;
+	const uint32_t sts = 1 << 1;
+	uint32_t reg;
+	struct stopwatch sw;
+
+	printk(BIOS_DEBUG, "Requesting RAM repair.\n");
+
+	stopwatch_init(&sw);
+
+	/* Perform ram repair */
+	reg = read32(&flow->ram_repair);
+	reg |= req;
+	write32(&flow->ram_repair, reg);
+	while ((read32(&flow->ram_repair) & sts) != sts)
+		;
+
+	printk(BIOS_DEBUG, "RAM repair complete in %ld usecs.\n",
+		stopwatch_duration_usecs(&sw));
+}
+
+void ccplex_cpu_prepare(void)
+{
+	enable_cpu_clocks();
+	enable_cpu_power_partitions();
+
+	mainboard_configure_pmc();
+	mainboard_enable_vdd_cpu();
+
+	request_ram_repair();
+}
+
+static void start_common_clocks(void)
+{
+	/* Clear fast CPU partition reset. */
+	write32(CLK_RST_REG(rst_cpug_cmplx_clr), CRC_RST_CPUG_CLR_NONCPU);
+
+	/* Clear reset of L2 and CoreSight components. */
+	write32(CLK_RST_REG(rst_cpug_cmplx_clr),
+		CRC_RST_CPUG_CLR_L2 | CRC_RST_CPUG_CLR_PDBG);
+}
+
+void ccplex_cpu_start(void *entry_addr)
+{
+	/* Enable common clocks for the shared resources between the cores. */
+	start_common_clocks();
+
+	start_cpu(0, entry_addr);
+}