armv7: Move Exynos from 'cpu' to 'soc'.

The Exynos family and most ARM products are SoC, not just CPU.

We used to put ARM code in src/cpu to avoid polluting the code base for what was
essentially an experiment at the time. Now that it's past the experimental phase
and we're going to see more SoCs (including intel/baytrail) in coreboot.

Change-Id: I5ea1f822664244edf5f77087bc8018d7c535f81c
Reviewed-on: https://chromium-review.googlesource.com/170891
Tested-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Ronald Minnich <rminnich@chromium.org>
Commit-Queue: Hung-Te Lin <hungte@chromium.org>
(cherry picked from commit c8bb8fe0b20be37465f93c738d80e7e43033670a)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6739
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

1 files changed, 267 insertions, 0 deletions

diff --git a/src/soc/samsung/exynos5250/pinmux.c b/src/soc/samsung/exynos5250/pinmux.c
new file mode 100644
index 0000000000..dc9590f20f
--- /dev/null
+++ b/src/soc/samsung/exynos5250/pinmux.c
@@ -0,0 +1,267 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Samsung Electronics
+ *
+ * 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 <console/console.h>
+#include <assert.h>
+#include "gpio.h"
+#include "pinmux.h"
+
+static void exynos_pinmux_uart(int start, int count)
+{
+	int i;
+
+	for (i = start; i < start + count; i++) {
+		gpio_set_pull(i, GPIO_PULL_NONE);
+		gpio_cfg_pin(i, GPIO_FUNC(0x2));
+	}
+}
+
+void exynos_pinmux_uart0(void)
+{
+	exynos_pinmux_uart(GPIO_A00, 4);
+}
+
+void exynos_pinmux_uart1(void)
+{
+	exynos_pinmux_uart(GPIO_D00, 4);
+}
+
+void exynos_pinmux_uart2(void)
+{
+	exynos_pinmux_uart(GPIO_A10, 4);
+}
+
+void exynos_pinmux_uart3(void)
+{
+	exynos_pinmux_uart(GPIO_A14, 2);
+}
+
+static void exynos_pinmux_sdmmc(int start, int start_ext)
+{
+	int i;
+
+	if (start_ext) {
+		for (i = 0; i <= 3; i++) {
+			gpio_cfg_pin(start_ext + i, GPIO_FUNC(0x2));
+			gpio_set_pull(start_ext + i, GPIO_PULL_UP);
+			gpio_set_drv(start_ext + i, GPIO_DRV_4X);
+		}
+	}
+	for (i = 0; i < 2; i++) {
+		gpio_cfg_pin(start + i, GPIO_FUNC(0x2));
+		gpio_set_pull(start + i, GPIO_PULL_NONE);
+		gpio_set_drv(start + i, GPIO_DRV_4X);
+	}
+	for (i = 2; i <= 6; i++) {
+		gpio_cfg_pin(start + i, GPIO_FUNC(0x2));
+		gpio_set_pull(start + i, GPIO_PULL_UP);
+		gpio_set_drv(start + i, GPIO_DRV_4X);
+	}
+}
+
+void exynos_pinmux_sdmmc0(void)
+{
+	exynos_pinmux_sdmmc(GPIO_C00, GPIO_C10);
+}
+
+void exynos_pinmux_sdmmc1(void)
+{
+	exynos_pinmux_sdmmc(GPIO_C20, 0);
+}
+
+void exynos_pinmux_sdmmc2(void)
+{
+	exynos_pinmux_sdmmc(GPIO_C30, 0);
+}
+
+void exynos_pinmux_sdmmc3(void)
+{
+	/*
+	 * TODO: Need to add definitions for GPC4 before
+	 * enabling this.
+	 */
+	printk(BIOS_DEBUG, "SDMMC3 not supported yet");
+}
+
+void exynos_pinmux_sromc(int bank, int sixteen_bit)
+{
+	int i;
+
+	if (bank > 3) {
+		printk(BIOS_DEBUG, "Unsupported sromc bank %d.\n", bank);
+		return;
+	}
+
+	gpio_cfg_pin(GPIO_Y00 + bank, GPIO_FUNC(2));
+	gpio_cfg_pin(GPIO_Y04, GPIO_FUNC(2));
+	gpio_cfg_pin(GPIO_Y05, GPIO_FUNC(2));
+
+	for (i = 2; i < 4; i++)
+		gpio_cfg_pin(GPIO_Y10 + i, GPIO_FUNC(2));
+
+	for (i = 0; i < 8; i++) {
+		gpio_cfg_pin(GPIO_Y30 + i, GPIO_FUNC(2));
+		gpio_set_pull(GPIO_Y30 + i, GPIO_PULL_UP);
+
+		gpio_cfg_pin(GPIO_Y50 + i, GPIO_FUNC(2));
+		gpio_set_pull(GPIO_Y50 + i, GPIO_PULL_UP);
+
+		if (sixteen_bit) {
+			gpio_cfg_pin(GPIO_Y60 + i, GPIO_FUNC(2));
+			gpio_set_pull(GPIO_Y60 + i, GPIO_PULL_UP);
+		}
+	}
+}
+
+static void exynos_pinmux_spi(int start, int cfg)
+{
+	int i;
+
+	for (i = 0; i < 4; i++) {
+		gpio_cfg_pin(start + i, GPIO_FUNC(cfg));
+		gpio_set_pull(start + i, GPIO_PULL_NONE);
+		gpio_set_drv(start + i, GPIO_DRV_3X);
+	}
+}
+
+void exynos_pinmux_spi0(void)
+{
+	exynos_pinmux_spi(GPIO_A20, 0x2);
+}
+
+void exynos_pinmux_spi1(void)
+{
+	exynos_pinmux_spi(GPIO_A24, 0x2);
+}
+
+void exynos_pinmux_spi2(void)
+{
+	exynos_pinmux_spi(GPIO_B11, 0x5);
+}
+
+void exynos_pinmux_spi3(void)
+{
+	exynos_pinmux_spi(GPIO_E00, 0x2);
+}
+
+void exynos_pinmux_spi4(void)
+{
+	int i;
+
+	for (i = 0; i < 2; i++)
+		gpio_cfg_pin(GPIO_F02 + i, GPIO_FUNC(0x4));
+	for (i = 2; i < 4; i++)
+		gpio_cfg_pin(GPIO_E02 + i, GPIO_FUNC(0x4));
+}
+
+void exynos_pinmux_backlight(void)
+{
+	gpio_cfg_pin(GPIO_B20, GPIO_OUTPUT);
+	gpio_set_value(GPIO_B20, 1);
+}
+
+void exynos_pinmux_lcd(void)
+{
+	gpio_cfg_pin(GPIO_Y25, GPIO_OUTPUT);
+	gpio_set_value(GPIO_Y25, 1);
+	gpio_cfg_pin(GPIO_X15, GPIO_OUTPUT);
+	gpio_set_value(GPIO_X15, 1);
+	gpio_cfg_pin(GPIO_X30, GPIO_OUTPUT);
+	gpio_set_value(GPIO_X30, 1);
+}
+
+static void exynos_pinmux_i2c(int start, int func)
+{
+	gpio_cfg_pin(start, GPIO_FUNC(func));
+	gpio_cfg_pin(start + 1, GPIO_FUNC(func));
+	gpio_set_pull(start, GPIO_PULL_NONE);
+	gpio_set_pull(start + 1, GPIO_PULL_NONE);
+}
+
+void exynos_pinmux_i2c0(void)
+{
+	exynos_pinmux_i2c(GPIO_B30, 0x2);
+}
+
+void exynos_pinmux_i2c1(void)
+{
+	exynos_pinmux_i2c(GPIO_B32, 0x2);
+}
+
+void exynos_pinmux_i2c2(void)
+{
+	exynos_pinmux_i2c(GPIO_A06, 0x3);
+}
+
+void exynos_pinmux_i2c3(void)
+{
+	exynos_pinmux_i2c(GPIO_A12, 0x3);
+}
+
+void exynos_pinmux_i2c4(void)
+{
+	exynos_pinmux_i2c(GPIO_A20, 0x3);
+}
+
+void exynos_pinmux_i2c5(void)
+{
+	exynos_pinmux_i2c(GPIO_A22, 0x3);
+}
+
+void exynos_pinmux_i2c6(void)
+{
+	exynos_pinmux_i2c(GPIO_B13, 0x4);
+}
+
+void exynos_pinmux_i2c7(void)
+{
+	exynos_pinmux_i2c(GPIO_B22, 0x3);
+}
+
+void exynos_pinmux_dphpd(void)
+{
+	/* Set Hotplug detect for DP */
+	gpio_cfg_pin(GPIO_X07, GPIO_FUNC(0x3));
+
+	/*
+	 * Hotplug detect should have an external pullup; disable the
+	 * internal pulldown so they don't fight.
+	 */
+	gpio_set_pull(GPIO_X07, GPIO_PULL_NONE);
+}
+
+void exynos_pinmux_i2s0(void)
+{
+	int i;
+
+	for (i = 0; i < 5; i++) {
+		gpio_cfg_pin(GPIO_Z0 + i, GPIO_FUNC(0x02));
+		gpio_set_pull(GPIO_Z0 + i, GPIO_PULL_NONE);
+	}
+}
+
+void exynos_pinmux_i2s1(void)
+{
+	int i;
+
+	for (i = 0; i < 5; i++) {
+		gpio_cfg_pin(GPIO_B00 + i, GPIO_FUNC(0x02));
+		gpio_set_pull(GPIO_B00 + i, GPIO_PULL_NONE);
+	}
+}