tegra132: add bootblock_mainboard_early_init()

Instead of hard coding certain pieces of a board in the common
chipset code provide a way to initialize things early in the
bootblock path. Add a bootblock_mainboard_early_init() function
before console init to performany necessary mainboard initialization
early in the bootblock.

BUG=chrome-os-partner:31104
BUG=chrome-os-partner:31105
BUG=chrome-os-partner:29981
BRANCH=None
TEST=built both on rush and ryu. rush still behaves the same.

Change-Id: Idcf081eeffd189a4e2cbfeb8a4ac5dd0a3d1f838
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 4a523add6de03bea0d88e95b9dbb5e283c629400
Original-Change-Id: I7d93641dff3a961f120e8f0ec2d959182477ef87
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/210835
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/8877
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/google/rush/bootblock.c

@@ -18,11 +18,12 @@
  */
 
 #include <arch/io.h>
-#include <bootblock_common.h>
 #include <console/console.h>
 #include <device/i2c.h>
 #include <soc/addressmap.h>
+#include <soc/bootblock.h>
 #include <soc/clock.h>
+#include <soc/padconfig.h>
 #include <soc/nvidia/tegra/i2c.h>
 #include <soc/nvidia/tegra132/clk_rst.h>
 #include <soc/nvidia/tegra132/gpio.h>
@@ -33,6 +34,24 @@
 
 static struct clk_rst_ctlr *clk_rst = (void *)TEGRA_CLK_RST_BASE;
 
+static const struct pad_config uart_console_pads[] = {
+	/* Hard coded pad usage for UARTA. */
+	PAD_CFG_SFIO(KB_ROW9, 0, UA3),
+	PAD_CFG_SFIO(KB_ROW10, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, UA3),
+	/*
+	 * Disable UART2 pads as they are default connected to UARTA controller.
+	 */
+	PAD_CFG_UNUSED(UART2_RXD),
+	PAD_CFG_UNUSED(UART2_TXD),
+	PAD_CFG_UNUSED(UART2_RTS_N),
+	PAD_CFG_UNUSED(UART2_CTS_N),
+};
+
+void bootblock_mainboard_early_init(void)
+{
+	soc_configure_pads(uart_console_pads, ARRAY_SIZE(uart_console_pads));
+}
+
 static void set_clock_sources(void)
 {
 	/* UARTA gets PLLP, deactivate CLK_UART_DIV_OVERRIDE */

src/mainboard/google/rush_ryu/bootblock.c

@@ -18,11 +18,12 @@
  */
 
 #include <arch/io.h>
-#include <bootblock_common.h>
 #include <console/console.h>
 #include <device/i2c.h>
 #include <soc/addressmap.h>
+#include <soc/bootblock.h>
 #include <soc/clock.h>
+#include <soc/padconfig.h>
 #include <soc/nvidia/tegra/i2c.h>
 #include <soc/nvidia/tegra132/clk_rst.h>
 #include <soc/nvidia/tegra132/gpio.h>
@@ -33,6 +34,24 @@
 
 static struct clk_rst_ctlr *clk_rst = (void *)TEGRA_CLK_RST_BASE;
 
+static const struct pad_config uart_console_pads[] = {
+	/* Hard coded pad usage for UARTA. */
+	PAD_CFG_SFIO(KB_ROW9, 0, UA3),
+	PAD_CFG_SFIO(KB_ROW10, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, UA3),
+	/*
+	 * Disable UART2 pads as they are default connected to UARTA controller.
+	 */
+	PAD_CFG_UNUSED(UART2_RXD),
+	PAD_CFG_UNUSED(UART2_TXD),
+	PAD_CFG_UNUSED(UART2_RTS_N),
+	PAD_CFG_UNUSED(UART2_CTS_N),
+};
+
+void bootblock_mainboard_early_init(void)
+{
+	soc_configure_pads(uart_console_pads, ARRAY_SIZE(uart_console_pads));
+}
+
 static void set_clock_sources(void)
 {
 	/* UARTA gets PLLP, deactivate CLK_UART_DIV_OVERRIDE */

src/soc/nvidia/tegra132/bootblock.c

@@ -22,25 +22,16 @@
 #include <bootblock_common.h>
 #include <console/console.h>
 #include <program_loading.h>
+#include <soc/bootblock.h>
 #include <soc/clock.h>
-#include <soc/padconfig.h>
 #include <soc/nvidia/tegra/apbmisc.h>
 
-#include "pinmux.h"
 #include "power.h"
 
-static const struct pad_config uart_console_pads[] = {
+void __attribute__((weak)) bootblock_mainboard_early_init(void)
-	/* Hard coded pad usage for UARTA. */
+{
-	PAD_CFG_SFIO(KB_ROW9, 0, UA3),
+	/* Empty default implementation. */
-	PAD_CFG_SFIO(KB_ROW10, PINMUX_INPUT_ENABLE | PINMUX_PULL_UP, UA3),
+}
-	/*
-	 * Disable UART2 pads as they are default connected to UARTA controller.
-	 */
-	PAD_CFG_UNUSED(UART2_RXD),
-	PAD_CFG_UNUSED(UART2_TXD),
-	PAD_CFG_UNUSED(UART2_RTS_N),
-	PAD_CFG_UNUSED(UART2_CTS_N),
-};
 
 void main(void)
 {
@@ -52,7 +43,7 @@ void main(void)
 
 	clock_early_uart();
 
-	soc_configure_pads(uart_console_pads, ARRAY_SIZE(uart_console_pads));
+	bootblock_mainboard_early_init();
 
 	if (CONFIG_BOOTBLOCK_CONSOLE) {
 		console_init();

src/soc/nvidia/tegra132/include/soc/bootblock.h

@@ -0,0 +1,32 @@
+/*
+ * 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
+ */
+
+#ifndef __SOC_NVIDIA_TEGRA132_SOC_BOOTBLOCK_H__
+#define __SOC_NVIDIA_TEGRA132_SOC_BOOTBLOCK_H__
+
+#include <bootblock_common.h>
+
+/*
+ * Perform any necessary mainboard-specific work early in bootblock. This is
+ * ran before consoles are brought up so any pad configuration could be done
+ * in this routine to enable console hardware.
+ */
+void bootblock_mainboard_early_init(void);
+
+#endif /* __SOC_NVIDIA_TEGRA132_SOC_BOOTBLOCK_H__ */