2 * (C) Copyright 2010 Samsung Electronics
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4 * See file CREDITS for list of people who contributed to this
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7 * This program is free software; you can redistribute it and/or
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8 * modify it under the terms of the GNU General Public License as
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9 * published by the Free Software Foundation; either version 2 of
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10 * the License, or (at your option) any later version.
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12 * This program is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 * GNU General Public License for more details.
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17 * You should have received a copy of the GNU General Public License
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18 * along with this program; if not, write to the Free Software
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19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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24 #include <linux/mtd/compat.h>
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25 #include <linux/mtd/mtd.h>
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26 #include <linux/mtd/onenand.h>
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28 #include <asm/arch/gpio.h>
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29 #include <asm/arch/keypad.h>
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30 #include "../../../onenand.h"
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32 typedef int (init_fnc_t) (void);
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34 DECLARE_GLOBAL_DATA_PTR;
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36 static struct s5pc110_gpio *s5pc110_gpio;
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38 static void sdelay(unsigned long usec)
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50 static int check_keypad(void)
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52 unsigned int condition = 0;
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53 unsigned int reg, value;
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54 unsigned int col_num, row_num;
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55 unsigned int col_mask;
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56 unsigned int col_mask_shift;
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57 unsigned int row_state[4] = {0, 0, 0, 0};
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60 /* board is limo universal */
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65 for (i = 0; i < sizeof(row_state)/sizeof(int); i++) {
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69 for (i = 0; i < row_num; i++) {
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70 /* Set GPH3[3:0] to KP_ROW[3:0] */
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71 gpio_cfg_pin(&s5pc110_gpio->gpio_h3, i, 0x3);
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72 gpio_set_pull(&s5pc110_gpio->gpio_h3, i, GPIO_PULL_UP);
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75 for (i = 0; i < col_num; i++)
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76 /* Set GPH2[3:0] to KP_COL[3:0] */
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77 gpio_cfg_pin(&s5pc110_gpio->gpio_h2, i, 0x3);
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79 reg = S5PC110_KEYPAD_BASE;
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80 col_mask = S5PC110_KEYIFCOLEN_MASK;
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83 /* KEYIFCOL reg clear */
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84 writel(0, reg + S5PC1XX_KEYIFCOL_OFFSET);
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87 for (i = 0; i < col_num; i++) {
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89 value &= ~(1 << i) << col_mask_shift;
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91 writel(value, reg + S5PC1XX_KEYIFCOL_OFFSET);
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94 value = readl(reg + S5PC1XX_KEYIFROW_OFFSET);
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95 row_state[i] = ~value & ((1 << row_num) - 1);
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98 /* KEYIFCOL reg clear */
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99 writel(0, reg + S5PC1XX_KEYIFCOL_OFFSET);
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101 /* check volume up/down */
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102 if ((row_state[1] & 0x3) == 0x3) {
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109 static int check_block(void)
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111 struct onenand_op *onenand_ops = onenand_get_interface();
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112 struct mtd_info *mtd = onenand_ops->mtd;
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113 struct onenand_chip *this = mtd->priv;
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115 int page_to_check = 4;
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116 int ret, retlen = 0;
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117 ulong blocksize = 1 << this->erase_shift;
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118 ulong pagesize = 1 << this->page_shift;
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119 u_char *down_ram_addr = (unsigned char *)CONFIG_SYS_DOWN_ADDR;
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120 ulong uboot_start_addr = CONFIG_RECOVERY_BOOTSTART_BLOCK << this->erase_shift;
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121 u_char verify_buf[0x10];
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123 onenand_ops->read(uboot_start_addr, blocksize, &retlen, down_ram_addr, 0);
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124 if (retlen != blocksize)
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129 memset(verify_buf, 0xFF, sizeof(verify_buf));
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131 for (i = 0; i < page_to_check; i++) {
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132 ret = memcmp(down_ram_addr + pagesize*i, verify_buf, sizeof(verify_buf));
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139 if (i == page_to_check) {
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146 int board_check_condition(void)
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148 if (check_keypad()) {
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152 if (check_block()) {
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159 int board_load_uboot(unsigned char *buf)
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161 struct mtd_info *mtd = &onenand_mtd;
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162 struct onenand_chip *this = mtd->priv;
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167 offset = CONFIG_RECOVERY_BOOTSTART_BLOCK << this->erase_shift;
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168 size = CONFIG_SYS_MONITOR_LEN;
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170 mtd->read(mtd, offset, size, &ret, buf);
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179 int board_update_uboot(void)
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184 void board_recovery_init(void)
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186 /* Set Initial global variables */
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187 s5pc110_gpio = (struct s5pc110_gpio *) S5PC110_GPIO_BASE;
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