nyans: reduce code duplication in bootblock and romstages

this change reduces the code duplication of the bootblock and the romstages for
Nyans.

BUG=none
TEST=Built Nyan, Big, and Blaze. Ran faft on Blaze.
BRANCH=none
Original-Signed-off-by: dnojiri@chromium.org (Daisuke Nojiri)
Original-Change-Id: Ieb9dac3b061a2cf46c63afb2f31eb67ab391ea1a
Original-Reviewed-on: https://chromium-review.googlesource.com/214050
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Original-Commit-Queue: Daisuke Nojiri <dnojiri@chromium.org>
Original-Tested-by: Daisuke Nojiri <dnojiri@chromium.org>

(cherry picked from commit f3413d39458f03895fe4963a41285f71d81bcf5f)
Signed-off-by: Aaron Durbin <adurbin@chromium.org>

Change-Id: I912f63b12321aa26a7add302fc8a6c4e607330ef
Reviewed-on: http://review.coreboot.org/8880
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

3 files changed, 110 insertions, 115 deletions

diff --git a/src/mainboard/google/nyan/Makefile.inc b/src/mainboard/google/nyan/Makefile.inc
index ace6e32c0a..de1e127f59 100644
--- a/src/mainboard/google/nyan/Makefile.inc
+++ b/src/mainboard/google/nyan/Makefile.inc
@@ -36,6 +36,7 @@ romstage-y += reset.c
 romstage-y += romstage.c
 romstage-y += sdram_configs.c
 romstage-$(CONFIG_CHROMEOS) += chromeos.c
+romstage-y += early_configs.c
 
 ramstage-y += boardid.c
 ramstage-y += mainboard.c
diff --git a/src/mainboard/google/nyan/early_configs.c b/src/mainboard/google/nyan/early_configs.c
new file mode 100644
index 0000000000..c1f5f9b2f6
--- /dev/null
+++ b/src/mainboard/google/nyan/early_configs.c
@@ -0,0 +1,103 @@
+/*
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <soc/addressmap.h>
+#include <soc/clock.h>
+#include <soc/nvidia/tegra/i2c.h>
+#include <soc/nvidia/tegra124/gpio.h>
+#include <soc/nvidia/tegra124/early_configs.h>
+
+static struct clk_rst_ctlr *clk_rst = (void *)TEGRA_CLK_RST_BASE;
+
+static void setup_pinmux(void)
+{
+	/* Write protect. */
+	gpio_input_pullup(GPIO(R1));
+	/* Recovery mode. */
+	gpio_input_pullup(GPIO(Q7));
+	/* Lid switch. */
+	gpio_input_pullup(GPIO(R4));
+	/* Power switch. */
+	gpio_input_pullup(GPIO(Q0));
+	/* Developer mode. */
+	gpio_input_pullup(GPIO(Q6));
+	/* EC in RW. */
+	gpio_input_pullup(GPIO(U4));
+
+	/* route PU4/5 to GMI to remove conflict w/PWM1/2. */
+	pinmux_set_config(PINMUX_GPIO_PU4_INDEX,
+			  PINMUX_GPIO_PU4_FUNC_NOR);        /* s/b GMI */
+	pinmux_set_config(PINMUX_GPIO_PU5_INDEX,
+			  PINMUX_GPIO_PU5_FUNC_NOR);        /* s/b GMI */
+
+	/* SOC and TPM reset GPIO, active low. */
+	gpio_output(GPIO(I5), 1);
+
+	/* SPI1 MOSI */
+	pinmux_set_config(PINMUX_ULPI_CLK_INDEX, PINMUX_ULPI_CLK_FUNC_SPI1 |
+						 PINMUX_PULL_NONE |
+						 PINMUX_INPUT_ENABLE);
+	/* SPI1 MISO */
+	pinmux_set_config(PINMUX_ULPI_DIR_INDEX, PINMUX_ULPI_DIR_FUNC_SPI1 |
+						 PINMUX_PULL_NONE |
+						 PINMUX_INPUT_ENABLE);
+	/* SPI1 SCLK */
+	pinmux_set_config(PINMUX_ULPI_NXT_INDEX, PINMUX_ULPI_NXT_FUNC_SPI1 |
+						 PINMUX_PULL_NONE |
+						 PINMUX_INPUT_ENABLE);
+	/* SPI1 CS0 */
+	pinmux_set_config(PINMUX_ULPI_STP_INDEX, PINMUX_ULPI_STP_FUNC_SPI1 |
+						 PINMUX_PULL_NONE |
+						 PINMUX_INPUT_ENABLE);
+
+	/* I2C3 (cam) clock. */
+	pinmux_set_config(PINMUX_CAM_I2C_SCL_INDEX,
+			  PINMUX_CAM_I2C_SCL_FUNC_I2C3 | PINMUX_INPUT_ENABLE);
+	/* I2C3 (cam) data. */
+	pinmux_set_config(PINMUX_CAM_I2C_SDA_INDEX,
+			  PINMUX_CAM_I2C_SDA_FUNC_I2C3 | PINMUX_INPUT_ENABLE);
+
+	/* switch unused pin to GPIO */
+	gpio_set_mode(GPIO(X3), GPIO_MODE_GPIO);
+	gpio_set_mode(GPIO(X4), GPIO_MODE_GPIO);
+	gpio_set_mode(GPIO(X5), GPIO_MODE_GPIO);
+	gpio_set_mode(GPIO(X6), GPIO_MODE_GPIO);
+	gpio_set_mode(GPIO(X7), GPIO_MODE_GPIO);
+	gpio_set_mode(GPIO(W3), GPIO_MODE_GPIO);
+}
+
+static void configure_ec_spi_bus(void)
+{
+	clock_configure_source(sbc1, CLK_M, 3000);
+}
+
+static void configure_tpm_i2c_bus(void)
+{
+	clock_configure_i2c_scl_freq(i2c3, PLLP, 400);
+
+	i2c_init(2);
+}
+
+void early_mainboard_init(void)
+{
+	clock_enable_clear_reset(0, CLK_H_SBC1, CLK_U_I2C3, 0, 0, 0);
+	setup_pinmux();
+	configure_ec_spi_bus();
+	configure_tpm_i2c_bus();
+}
diff --git a/src/mainboard/google/nyan/romstage.c b/src/mainboard/google/nyan/romstage.c
index 914c925d5d..0baf2b74f8 100644
--- a/src/mainboard/google/nyan/romstage.c
+++ b/src/mainboard/google/nyan/romstage.c
@@ -30,8 +30,10 @@
 #include <vendorcode/google/chromeos/chromeos.h>
 #include "sdram_configs.h"
 #include <soc/nvidia/tegra/i2c.h>
+#include <soc/nvidia/tegra124/cache.h>
 #include <soc/nvidia/tegra124/chip.h>
 #include <soc/nvidia/tegra124/clk_rst.h>
+#include <soc/nvidia/tegra124/early_configs.h>
 #include <soc/nvidia/tegra124/power.h>
 #include <soc/nvidia/tegra124/sdram.h>
 #include <soc/addressmap.h>
@@ -39,120 +41,12 @@
 #include <soc/display.h>
 #include <timestamp.h>
 
-static struct clk_rst_ctlr *clk_rst = (void *)TEGRA_CLK_RST_BASE;
-
-enum {
-	L2CTLR_ECC_PARITY = 0x1 << 21,
-	L2CTLR_TAG_RAM_LATENCY_MASK = 0x7 << 6,
-	L2CTLR_TAG_RAM_LATENCY_CYCLES_3 = 2 << 6,
-	L2CTLR_DATA_RAM_LATENCY_MASK = 0x7 << 0,
-	L2CTLR_DATA_RAM_LATENCY_CYCLES_3  = 2 << 0
-};
-
-enum {
-	L2ACTLR_FORCE_L2_LOGIC_CLOCK_ENABLE_ACTIVE = 0x1 << 27,
-	L2ACTLR_ENABLE_HAZARD_DETECT_TIMEOUT = 0x1 << 7,
-	L2ACTLR_DISABLE_CLEAN_EVICT_PUSH_EXTERNAL = 0x1 << 3
-};
-
-/* Configures L2 Control Register to use 3 cycles for DATA/TAG RAM latency. */
-static void configure_l2ctlr(void)
-{
-   uint32_t val;
-
-   val = read_l2ctlr();
-   val &= ~(L2CTLR_DATA_RAM_LATENCY_MASK | L2CTLR_TAG_RAM_LATENCY_MASK);
-   val |= (L2CTLR_DATA_RAM_LATENCY_CYCLES_3 | L2CTLR_TAG_RAM_LATENCY_CYCLES_3 |
-	   L2CTLR_ECC_PARITY);
-   write_l2ctlr(val);
-}
-
-/* Configures L2 Auxiliary Control Register for Cortex A15. */
-static void configure_l2actlr(void)
-{
-   uint32_t val;
-
-   val = read_l2actlr();
-   val |= (L2ACTLR_DISABLE_CLEAN_EVICT_PUSH_EXTERNAL |
-	   L2ACTLR_ENABLE_HAZARD_DETECT_TIMEOUT |
-	   L2ACTLR_FORCE_L2_LOGIC_CLOCK_ENABLE_ACTIVE);
-   write_l2actlr(val);
-}
-
-static void setup_pinmux(void)
-{
-	// Write protect.
-	gpio_input_pullup(GPIO(R1));
-	// Recovery mode.
-	gpio_input_pullup(GPIO(Q7));
-	// Lid switch.
-	gpio_input_pullup(GPIO(R4));
-	// Power switch.
-	gpio_input_pullup(GPIO(Q0));
-	// Developer mode.
-	gpio_input_pullup(GPIO(Q6));
-	// EC in RW.
-	gpio_input_pullup(GPIO(U4));
-
-	// route PU4/5 to GMI to remove conflict w/PWM1/2.
-	pinmux_set_config(PINMUX_GPIO_PU4_INDEX, PINMUX_GPIO_PU4_FUNC_NOR);        //s/b GMI
-	pinmux_set_config(PINMUX_GPIO_PU5_INDEX, PINMUX_GPIO_PU5_FUNC_NOR);        //s/b GMI
-
-	// SOC and TPM reset GPIO, active low.
-	gpio_output(GPIO(I5), 1);
-
-	// SPI1 MOSI
-	pinmux_set_config(PINMUX_ULPI_CLK_INDEX, PINMUX_ULPI_CLK_FUNC_SPI1 |
-						 PINMUX_PULL_NONE |
-						 PINMUX_INPUT_ENABLE);
-	// SPI1 MISO
-	pinmux_set_config(PINMUX_ULPI_DIR_INDEX, PINMUX_ULPI_DIR_FUNC_SPI1 |
-						 PINMUX_PULL_NONE |
-						 PINMUX_INPUT_ENABLE);
-	// SPI1 SCLK
-	pinmux_set_config(PINMUX_ULPI_NXT_INDEX, PINMUX_ULPI_NXT_FUNC_SPI1 |
-						 PINMUX_PULL_NONE |
-						 PINMUX_INPUT_ENABLE);
-	// SPI1 CS0
-	pinmux_set_config(PINMUX_ULPI_STP_INDEX, PINMUX_ULPI_STP_FUNC_SPI1 |
-						 PINMUX_PULL_NONE |
-						 PINMUX_INPUT_ENABLE);
-
-	// I2C3 (cam) clock.
-	pinmux_set_config(PINMUX_CAM_I2C_SCL_INDEX,
-			  PINMUX_CAM_I2C_SCL_FUNC_I2C3 | PINMUX_INPUT_ENABLE);
-	// I2C3 (cam) data.
-	pinmux_set_config(PINMUX_CAM_I2C_SDA_INDEX,
-			  PINMUX_CAM_I2C_SDA_FUNC_I2C3 | PINMUX_INPUT_ENABLE);
-
-	// switch unused pin to GPIO
-	gpio_set_mode(GPIO(X3), GPIO_MODE_GPIO);
-	gpio_set_mode(GPIO(X4), GPIO_MODE_GPIO);
-	gpio_set_mode(GPIO(X5), GPIO_MODE_GPIO);
-	gpio_set_mode(GPIO(X6), GPIO_MODE_GPIO);
-	gpio_set_mode(GPIO(X7), GPIO_MODE_GPIO);
-	gpio_set_mode(GPIO(W3), GPIO_MODE_GPIO);
-}
-
-static void configure_ec_spi_bus(void)
-{
-	clock_configure_source(sbc1, CLK_M, 3000);
-}
-
-static void configure_tpm_i2c_bus(void)
-{
-	clock_configure_i2c_scl_freq(i2c3, PLLP, 400);
-
-	i2c_init(2);
-}
-
 static void __attribute__((noinline)) romstage(void)
 {
 	timestamp_init(0);
 	timestamp_add_now(TS_START_ROMSTAGE);
 
-	configure_l2ctlr();
-	configure_l2actlr();
+	configure_l2_cache();
 
 	console_init();
 	exception_init();
@@ -191,13 +85,10 @@ static void __attribute__((noinline)) romstage(void)
 
 	cbmem_initialize_empty();
 
-	// Enable additional peripherals we need for ROM stage.
-	clock_enable_clear_reset(0, CLK_H_SBC1, CLK_U_I2C3, 0, 0, 0);
-
-	setup_pinmux();
+	timestamp_init(0);
+	timestamp_add(TS_START_ROMSTAGE, romstage_start_time);
 
-	configure_ec_spi_bus();
-	configure_tpm_i2c_bus();
+	early_mainboard_init();
 
 	vboot_verify_firmware(romstage_handoff_find_or_add());