Stefan Roese | 105350e | 2008-03-11 16:51:17 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2008 |
| 3 | * Stefan Roese, DENX Software Engineering, sr@denx.de. |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | #include <common.h> |
| 26 | #include <command.h> |
| 27 | #include <i2c.h> |
| 28 | #include <asm/io.h> |
| 29 | |
| 30 | /* |
| 31 | * NOR and NAND boot options change bytes 6, 7, 8, 9, 11. The |
| 32 | * values are independent of the rest of the clock settings. |
| 33 | */ |
| 34 | |
| 35 | #define NAND_COMPATIBLE 0x01 |
| 36 | #define NOR_COMPATIBLE 0x02 |
| 37 | |
| 38 | #define I2C_EEPROM_ADDR 0x52 |
| 39 | |
| 40 | static char *config_labels[] = { |
| 41 | "CPU: 600 PLB: 200 OPB: 100 EBC: 100", |
| 42 | "CPU: 800 PLB: 200 OPB: 100 EBC: 100", |
| 43 | NULL |
| 44 | }; |
| 45 | |
| 46 | static u8 boot_configs[][17] = { |
| 47 | { |
| 48 | (NOR_COMPATIBLE), |
| 49 | 0x86, 0x80, 0xce, 0x1f, 0x79, 0x80, 0x00, 0xa0, 0x40, 0x08, |
| 50 | 0x23, 0x50, 0x0d, 0x95, 0x00, 0x00 |
| 51 | }, |
| 52 | { |
| 53 | (NOR_COMPATIBLE), |
| 54 | 0x86, 0x80, 0xba, 0x14, 0x99, 0x80, 0x00, 0xa0, 0x40, 0x08, |
| 55 | 0x23, 0x50, 0x0d, 0x95, 0x00, 0x00 |
| 56 | }, |
| 57 | { |
| 58 | 0, |
| 59 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
| 60 | } |
| 61 | }; |
| 62 | |
| 63 | /* |
| 64 | * Bytes 6,8,9,11 change for NAND boot |
| 65 | */ |
| 66 | static u8 nand_boot[] = { |
| 67 | 0xd0, 0xa0, 0x68, 0x58 |
| 68 | }; |
| 69 | |
| 70 | static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
| 71 | { |
| 72 | u8 *buf, b_nand; |
| 73 | int x, y, nbytes, selcfg; |
| 74 | extern char console_buffer[]; |
| 75 | |
| 76 | if (argc < 2) { |
| 77 | printf("Usage:\n%s\n", cmdtp->usage); |
| 78 | return 1; |
| 79 | } |
| 80 | |
| 81 | if ((strcmp(argv[1], "nor") != 0) && |
| 82 | (strcmp(argv[1], "nand") != 0)) { |
| 83 | printf("Unsupported boot-device - only nor|nand support\n"); |
| 84 | return 1; |
| 85 | } |
| 86 | |
| 87 | /* set the nand flag based on provided input */ |
| 88 | if ((strcmp(argv[1], "nand") == 0)) |
| 89 | b_nand = 1; |
| 90 | else |
| 91 | b_nand = 0; |
| 92 | |
| 93 | printf("Available configurations: \n\n"); |
| 94 | |
| 95 | if (b_nand) { |
| 96 | for(x = 0, y = 0; boot_configs[x][0] != 0; x++) { |
| 97 | /* filter on nand compatible */ |
| 98 | if (boot_configs[x][0] & NAND_COMPATIBLE) { |
| 99 | printf(" %d - %s\n", (y+1), config_labels[x]); |
| 100 | y++; |
| 101 | } |
| 102 | } |
| 103 | } else { |
| 104 | for(x = 0, y = 0; boot_configs[x][0] != 0; x++) { |
| 105 | /* filter on nor compatible */ |
| 106 | if (boot_configs[x][0] & NOR_COMPATIBLE) { |
| 107 | printf(" %d - %s\n", (y+1), config_labels[x]); |
| 108 | y++; |
| 109 | } |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | do { |
| 114 | nbytes = readline(" Selection [1-x / quit]: "); |
| 115 | |
| 116 | if (nbytes) { |
| 117 | if (strcmp(console_buffer, "quit") == 0) |
| 118 | return 0; |
| 119 | selcfg = simple_strtol(console_buffer, NULL, 10); |
| 120 | if ((selcfg < 1) || (selcfg > y)) |
| 121 | nbytes = 0; |
| 122 | } |
| 123 | } while (nbytes == 0); |
| 124 | |
| 125 | |
| 126 | y = (selcfg - 1); |
| 127 | |
| 128 | for (x = 0; boot_configs[x][0] != 0; x++) { |
| 129 | if (b_nand) { |
| 130 | if (boot_configs[x][0] & NAND_COMPATIBLE) { |
| 131 | if (y > 0) |
| 132 | y--; |
| 133 | else if (y < 1) |
| 134 | break; |
| 135 | } |
| 136 | } else { |
| 137 | if (boot_configs[x][0] & NOR_COMPATIBLE) { |
| 138 | if (y > 0) |
| 139 | y--; |
| 140 | else if (y < 1) |
| 141 | break; |
| 142 | } |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | buf = &boot_configs[x][1]; |
| 147 | |
| 148 | if (b_nand) { |
| 149 | buf[6] = nand_boot[0]; |
| 150 | buf[8] = nand_boot[1]; |
| 151 | buf[9] = nand_boot[2]; |
| 152 | buf[11] = nand_boot[3]; |
| 153 | } |
| 154 | |
| 155 | if (i2c_write(I2C_EEPROM_ADDR, 0, 1, buf, 16) != 0) |
| 156 | printf("Error writing to EEPROM at address 0x%x\n", I2C_EEPROM_ADDR); |
| 157 | udelay(CFG_EEPROM_PAGE_WRITE_DELAY_MS * 1000); |
| 158 | |
| 159 | printf("Done\n"); |
| 160 | printf("Please power-cycle the board for the changes to take effect\n"); |
| 161 | |
| 162 | return 0; |
| 163 | } |
| 164 | |
| 165 | U_BOOT_CMD( |
| 166 | bootstrap, 2, 0, do_bootstrap, |
| 167 | "bootstrap - program the I2C bootstrap EEPROM\n", |
| 168 | "<nand|nor> - strap to boot from NAND or NOR flash\n" |
| 169 | ); |