2 * Copyright (C) 2010 Samsung Electronics
3 * Minkyu Kang <mk7.kang@samsung.com>
4 * Kyungmin Park <kyungmin.park@samsung.com>
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #include <asm/arch/adc.h>
28 #include <asm/arch/gpio.h>
29 #include <asm/arch/mmc.h>
32 DECLARE_GLOBAL_DATA_PTR;
34 struct exynos4_gpio_part1 *gpio1;
35 struct exynos4_gpio_part2 *gpio2;
36 unsigned int board_rev;
38 u32 get_board_rev(void)
43 static int get_hwrev(void)
45 return board_rev & 0xFF;
48 static void check_hw_revision(void);
52 gpio1 = (struct exynos4_gpio_part1 *) EXYNOS4_GPIO_PART1_BASE;
53 gpio2 = (struct exynos4_gpio_part2 *) EXYNOS4_GPIO_PART2_BASE;
55 gd->bd->bi_arch_number = MACH_TYPE_UNIVERSAL_C210;
56 gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
59 printf("HW Revision:\t0x%x\n", board_rev);
61 #if defined(CONFIG_PMIC)
70 gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE) +
71 get_ram_size((long *)PHYS_SDRAM_2, PHYS_SDRAM_2_SIZE);
76 void dram_init_banksize(void)
78 gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
79 gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
80 gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
81 gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
84 static unsigned short get_adc_value(int channel)
86 struct s5p_adc *adc = (struct s5p_adc *)samsung_get_base_adc();
87 unsigned short ret = 0;
89 unsigned int loop = 0;
91 writel(channel & 0xF, &adc->adcmux);
92 writel((1 << 14) | (49 << 6), &adc->adccon);
93 writel(1000 & 0xffff, &adc->adcdly);
94 writel(readl(&adc->adccon) | (1 << 16), &adc->adccon); /* 12 bit */
96 writel(readl(&adc->adccon) | (1 << 0), &adc->adccon); /* Enable */
101 reg = readl(&adc->adccon);
102 } while (!(reg & (1 << 15)) && (loop++ < 1000));
104 ret = readl(&adc->adcdat0) & 0xFFF;
109 static unsigned int get_hw_revision(void)
111 int hwrev, mode0, mode1;
113 mode0 = get_adc_value(1); /* HWREV_MODE0 */
114 mode1 = get_adc_value(2); /* HWREV_MODE1 */
117 * XXX Always set the default hwrev as the latest board
118 * ADC = (voltage) / 3.3 * 4096
122 #define IS_RANGE(x, min, max) ((x) > (min) && (x) < (max))
123 if (IS_RANGE(mode0, 80, 200) && IS_RANGE(mode1, 80, 200))
124 hwrev = 0x0; /* 0.01V 0.01V */
125 if (IS_RANGE(mode0, 750, 1000) && IS_RANGE(mode1, 80, 200))
126 hwrev = 0x1; /* 610mV 0.01V */
127 if (IS_RANGE(mode0, 1300, 1700) && IS_RANGE(mode1, 80, 200))
128 hwrev = 0x2; /* 1.16V 0.01V */
129 if (IS_RANGE(mode0, 2000, 2400) && IS_RANGE(mode1, 80, 200))
130 hwrev = 0x3; /* 1.79V 0.01V */
133 debug("mode0: %d, mode1: %d, hwrev 0x%x\n", mode0, mode1, hwrev);
138 static void check_hw_revision(void)
142 hwrev = get_hw_revision();
147 #ifdef CONFIG_DISPLAY_BOARDINFO
150 puts("Board:\tUniversal C210\n");
155 #ifdef CONFIG_GENERIC_MMC
156 int board_mmc_init(bd_t *bis)
160 switch (get_hwrev()) {
163 * Set the low to enable LDO_EN
164 * But when you use the test board for eMMC booting
165 * you should set it HIGH since it removes the inverter
167 /* MASSMEMORY_EN: XMDMDATA_6: GPE3[6] */
168 s5p_gpio_direction_output(&gpio1->e3, 6, 0);
172 * Default reset state is High and there's no inverter
173 * But set it as HIGH to ensure
175 /* MASSMEMORY_EN: XMDMADDR_3: GPE1[3] */
176 s5p_gpio_direction_output(&gpio1->e1, 3, 1);
182 * SDR 8-bit@48MHz at MMC0
183 * GPK0[0] SD_0_CLK(2)
184 * GPK0[1] SD_0_CMD(2)
185 * GPK0[2] SD_0_CDn -> Not used
186 * GPK0[3:6] SD_0_DATA[0:3](2)
187 * GPK1[3:6] SD_0_DATA[0:3](3)
189 * DDR 4-bit@26MHz at MMC4
190 * GPK0[0] SD_4_CLK(3)
191 * GPK0[1] SD_4_CMD(3)
192 * GPK0[2] SD_4_CDn -> Not used
193 * GPK0[3:6] SD_4_DATA[0:3](3)
194 * GPK1[3:6] SD_4_DATA[4:7](4)
196 for (i = 0; i < 7; i++) {
199 /* GPK0[0:6] special function 2 */
200 s5p_gpio_cfg_pin(&gpio2->k0, i, 0x2);
201 /* GPK0[0:6] pull disable */
202 s5p_gpio_set_pull(&gpio2->k0, i, GPIO_PULL_NONE);
203 /* GPK0[0:6] drv 4x */
204 s5p_gpio_set_drv(&gpio2->k0, i, GPIO_DRV_4X);
207 for (i = 3; i < 7; i++) {
208 /* GPK1[3:6] special function 3 */
209 s5p_gpio_cfg_pin(&gpio2->k1, i, 0x3);
210 /* GPK1[3:6] pull disable */
211 s5p_gpio_set_pull(&gpio2->k1, i, GPIO_PULL_NONE);
212 /* GPK1[3:6] drv 4x */
213 s5p_gpio_set_drv(&gpio2->k1, i, GPIO_DRV_4X);
217 s5p_gpio_cfg_pin(&gpio2->x3, 4, 0xf);
218 s5p_gpio_set_pull(&gpio2->x3, 4, GPIO_PULL_UP);
222 * mmc0 : eMMC (8-bit buswidth)
223 * mmc2 : SD card (4-bit buswidth)
225 err = s5p_mmc_init(0, 8);
228 * Check the T-flash detect pin
229 * GPX3[4] T-flash detect pin
231 if (!s5p_gpio_get_value(&gpio2->x3, 4)) {
234 * GPK2[0] SD_2_CLK(2)
235 * GPK2[1] SD_2_CMD(2)
236 * GPK2[2] SD_2_CDn -> Not used
237 * GPK2[3:6] SD_2_DATA[0:3](2)
239 for (i = 0; i < 7; i++) {
242 /* GPK2[0:6] special function 2 */
243 s5p_gpio_cfg_pin(&gpio2->k2, i, 0x2);
244 /* GPK2[0:6] pull disable */
245 s5p_gpio_set_pull(&gpio2->k2, i, GPIO_PULL_NONE);
246 /* GPK2[0:6] drv 4x */
247 s5p_gpio_set_drv(&gpio2->k2, i, GPIO_DRV_4X);
249 err = s5p_mmc_init(2, 4);