armv7: add support for s5pc210 universal board

This patch adds support for Samsung s5pc210 universal board

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

1 files changed, 250 insertions, 0 deletions

diff --git a/board/samsung/universal_c210/universal.c b/board/samsung/universal_c210/universal.c
new file mode 100644
index 0000000000..b65bc6ecb7
--- /dev/null
+++ b/board/samsung/universal_c210/universal.c
@@ -0,0 +1,250 @@
+/*
+ *  Copyright (C) 2010 Samsung Electronics
+ *  Minkyu Kang <mk7.kang@samsung.com>
+ *  Kyungmin Park <kyungmin.park@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/adc.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/mmc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct s5pc210_gpio_part1 *gpio1;
+struct s5pc210_gpio_part2 *gpio2;
+unsigned int board_rev;
+
+u32 get_board_rev(void)
+{
+	return board_rev;
+}
+
+static int get_hwrev(void)
+{
+	return board_rev & 0xFF;
+}
+
+static void check_hw_revision(void);
+
+int board_init(void)
+{
+	gpio1 = (struct s5pc210_gpio_part1 *) S5PC210_GPIO_PART1_BASE;
+	gpio2 = (struct s5pc210_gpio_part2 *) S5PC210_GPIO_PART2_BASE;
+
+	gd->bd->bi_arch_number = MACH_TYPE_UNIVERSAL_C210;
+	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
+
+	check_hw_revision();
+	printf("HW Revision:\t0x%x\n", board_rev);
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE) +
+		get_ram_size((long *)PHYS_SDRAM_2, PHYS_SDRAM_2_SIZE);
+
+	return 0;
+}
+
+void dram_init_banksize(void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
+	gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
+}
+
+static unsigned short get_adc_value(int channel)
+{
+	struct s5p_adc *adc = (struct s5p_adc *)samsung_get_base_adc();
+	unsigned short ret = 0;
+	unsigned int reg;
+	unsigned int loop = 0;
+
+	writel(channel & 0xF, &adc->adcmux);
+	writel((1 << 14) | (49 << 6), &adc->adccon);
+	writel(1000 & 0xffff, &adc->adcdly);
+	writel(readl(&adc->adccon) | (1 << 16), &adc->adccon); /* 12 bit */
+	udelay(10);
+	writel(readl(&adc->adccon) | (1 << 0), &adc->adccon); /* Enable */
+	udelay(10);
+
+	do {
+		udelay(1);
+		reg = readl(&adc->adccon);
+	} while (!(reg & (1 << 15)) && (loop++ < 1000));
+
+	ret = readl(&adc->adcdat0) & 0xFFF;
+
+	return ret;
+}
+
+static unsigned int get_hw_revision(void)
+{
+	int hwrev, mode0, mode1;
+
+	mode0 = get_adc_value(1);		/* HWREV_MODE0 */
+	mode1 = get_adc_value(2);		/* HWREV_MODE1 */
+
+	/*
+	 * XXX Always set the default hwrev as the latest board
+	 * ADC = (voltage) / 3.3 * 4096
+	 */
+	hwrev = 3;
+
+#define IS_RANGE(x, min, max)	((x) > (min) && (x) < (max))
+	if (IS_RANGE(mode0, 80, 200) && IS_RANGE(mode1, 80, 200))
+		hwrev = 0x0;		/* 0.01V	0.01V */
+	if (IS_RANGE(mode0, 750, 1000) && IS_RANGE(mode1, 80, 200))
+		hwrev = 0x1;		/* 610mV	0.01V */
+	if (IS_RANGE(mode0, 1300, 1700) && IS_RANGE(mode1, 80, 200))
+		hwrev = 0x2;		/* 1.16V	0.01V */
+	if (IS_RANGE(mode0, 2000, 2400) && IS_RANGE(mode1, 80, 200))
+		hwrev = 0x3;		/* 1.79V	0.01V */
+#undef IS_RANGE
+
+	debug("mode0: %d, mode1: %d, hwrev 0x%x\n", mode0, mode1, hwrev);
+
+	return hwrev;
+}
+
+static void check_hw_revision(void)
+{
+	int hwrev;
+
+	hwrev = get_hw_revision();
+
+	board_rev |= hwrev;
+}
+
+#ifdef CONFIG_DISPLAY_BOARDINFO
+int checkboard(void)
+{
+	puts("Board:\tUniversal C210\n");
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_GENERIC_MMC
+int board_mmc_init(bd_t *bis)
+{
+	int i, err;
+
+	switch (get_hwrev()) {
+	case 0:
+		/*
+		 * Set the low to enable LDO_EN
+		 * But when you use the test board for eMMC booting
+		 * you should set it HIGH since it removes the inverter
+		 */
+		/* MASSMEMORY_EN: XMDMDATA_6: GPE3[6] */
+		gpio_direction_output(&gpio1->e3, 6, 0);
+		break;
+	default:
+		/*
+		 * Default reset state is High and there's no inverter
+		 * But set it as HIGH to ensure
+		 */
+		/* MASSMEMORY_EN: XMDMADDR_3: GPE1[3] */
+		gpio_direction_output(&gpio1->e1, 3, 1);
+		break;
+	}
+
+	/*
+	 * eMMC GPIO:
+	 * SDR 8-bit@48MHz at MMC0
+	 * GPK0[0]	SD_0_CLK(2)
+	 * GPK0[1]	SD_0_CMD(2)
+	 * GPK0[2]	SD_0_CDn	-> Not used
+	 * GPK0[3:6]	SD_0_DATA[0:3](2)
+	 * GPK1[3:6]	SD_0_DATA[0:3](3)
+	 *
+	 * DDR 4-bit@26MHz at MMC4
+	 * GPK0[0]	SD_4_CLK(3)
+	 * GPK0[1]	SD_4_CMD(3)
+	 * GPK0[2]	SD_4_CDn	-> Not used
+	 * GPK0[3:6]	SD_4_DATA[0:3](3)
+	 * GPK1[3:6]	SD_4_DATA[4:7](4)
+	 */
+	for (i = 0; i < 7; i++) {
+		if (i == 2)
+			continue;
+		/* GPK0[0:6] special function 2 */
+		gpio_cfg_pin(&gpio2->k0, i, 0x2);
+		/* GPK0[0:6] pull disable */
+		gpio_set_pull(&gpio2->k0, i, GPIO_PULL_NONE);
+		/* GPK0[0:6] drv 4x */
+		gpio_set_drv(&gpio2->k0, i, GPIO_DRV_4X);
+	}
+
+	for (i = 3; i < 7; i++) {
+		/* GPK1[3:6] special function 3 */
+		gpio_cfg_pin(&gpio2->k1, i, 0x3);
+		/* GPK1[3:6] pull disable */
+		gpio_set_pull(&gpio2->k1, i, GPIO_PULL_NONE);
+		/* GPK1[3:6] drv 4x */
+		gpio_set_drv(&gpio2->k1, i, GPIO_DRV_4X);
+	}
+
+	/* T-flash detect */
+	gpio_cfg_pin(&gpio2->x3, 4, 0xf);
+	gpio_set_pull(&gpio2->x3, 4, GPIO_PULL_UP);
+
+	/*
+	 * MMC device init
+	 * mmc0	 : eMMC (8-bit buswidth)
+	 * mmc2	 : SD card (4-bit buswidth)
+	 */
+	err = s5p_mmc_init(0, 8);
+
+	/*
+	 * Check the T-flash  detect pin
+	 * GPX3[4] T-flash detect pin
+	 */
+	if (!gpio_get_value(&gpio2->x3, 4)) {
+		/*
+		 * SD card GPIO:
+		 * GPK2[0]	SD_2_CLK(2)
+		 * GPK2[1]	SD_2_CMD(2)
+		 * GPK2[2]	SD_2_CDn	-> Not used
+		 * GPK2[3:6]	SD_2_DATA[0:3](2)
+		 */
+		for (i = 0; i < 7; i++) {
+			if (i == 2)
+				continue;
+			/* GPK2[0:6] special function 2 */
+			gpio_cfg_pin(&gpio2->k2, i, 0x2);
+			/* GPK2[0:6] pull disable */
+			gpio_set_pull(&gpio2->k2, i, GPIO_PULL_NONE);
+			/* GPK2[0:6] drv 4x */
+			gpio_set_drv(&gpio2->k2, i, GPIO_DRV_4X);
+		}
+		err = s5p_mmc_init(2, 4);
+	}
+
+	return err;
+
+}
+#endif