Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 1 | /* |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 2 | * lhf00l04.c: driver for programming JEDEC standard flash parts |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 3 | * |
| 4 | * |
| 5 | * Copyright 2000 Silicon Integrated System Corporation |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 20 | * |
| 21 | * |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 22 | * Reference: http://www.intel.com/design/chipsets/datashts/290658.htm |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 23 | */ |
| 24 | |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 25 | #include <errno.h> |
| 26 | #include <fcntl.h> |
| 27 | #include <sys/mman.h> |
| 28 | #include <sys/io.h> |
| 29 | #include <unistd.h> |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 30 | #include <stdio.h> |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 31 | #include <stdlib.h> |
| 32 | |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 33 | #include "flash.h" |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 34 | #include "sharplhf00l04.h" |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 35 | #include "debug.h" |
| 36 | |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 37 | // I need that Berkeley bit-map printer |
| 38 | void print_lhf00l04_status(uint8_t status) |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 39 | { |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 40 | printf("%s", status & 0x80 ? "Ready:" : "Busy:"); |
| 41 | printf("%s", status & 0x40 ? "BE SUSPEND:" : "BE RUN/FINISH:"); |
| 42 | printf("%s", status & 0x20 ? "BE ERROR:" : "BE OK:"); |
| 43 | printf("%s", status & 0x10 ? "PROG ERR:" : "PROG OK:"); |
| 44 | printf("%s", status & 0x8 ? "VP ERR:" : "VPP OK:"); |
| 45 | printf("%s", status & 0x4 ? "PROG SUSPEND:" : "PROG RUN/FINISH:"); |
| 46 | printf("%s", status & 0x2 ? "WP|TBL#|WP#,ABORT:" : "UNLOCK:"); |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | int probe_lhf00l04(struct flashchip *flash) |
| 50 | { |
| 51 | volatile uint8_t *bios = flash->virt_addr; |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 52 | uint8_t id1, id2; |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 53 | |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 54 | #if 0 |
| 55 | *(volatile uint8_t *) (bios + 0x5555) = 0xAA; |
| 56 | *(volatile uint8_t *) (bios + 0x2AAA) = 0x55; |
| 57 | *(volatile uint8_t *) (bios + 0x5555) = 0x90; |
| 58 | #endif |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 59 | |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 60 | *bios = 0xff; |
| 61 | myusec_delay(10); |
| 62 | *bios = 0x90; |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 63 | myusec_delay(10); |
| 64 | |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 65 | id1 = *(volatile uint8_t *) bios; |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 66 | id2 = *(volatile uint8_t *) (bios + 0x01); |
| 67 | |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 68 | #if 1 |
| 69 | *(volatile uint8_t *) (bios + 0x5555) = 0xAA; |
| 70 | *(volatile uint8_t *) (bios + 0x2AAA) = 0x55; |
| 71 | *(volatile uint8_t *) (bios + 0x5555) = 0xF0; |
| 72 | |
| 73 | #endif |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 74 | myusec_delay(10); |
| 75 | |
| 76 | printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2); |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 77 | |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 78 | if (id1 == flash->manufacture_id && id2 == flash->model_id) { |
| 79 | size_t size = flash->total_size * 1024; |
| 80 | // we need to mmap the write-protect space. |
| 81 | bios = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED, |
| 82 | flash->fd_mem, (off_t) (0 - 0x400000 - size)); |
| 83 | if (bios == MAP_FAILED) { |
| 84 | // it's this part but we can't map it ... |
| 85 | perror("Error MMAP /dev/mem"); |
| 86 | exit(1); |
| 87 | } |
| 88 | |
| 89 | flash->virt_addr_2 = bios; |
| 90 | printf("bios %p, *bios 0x%x, bios[1] 0x%x\n", bios, *bios, bios[1]); |
| 91 | return 1; |
| 92 | } |
| 93 | |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 94 | return 0; |
| 95 | } |
| 96 | |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 97 | uint8_t wait_lhf00l04(volatile uint8_t *bios) |
| 98 | { |
| 99 | |
| 100 | uint8_t status; |
| 101 | uint8_t id1, id2; |
| 102 | |
| 103 | *bios = 0x70; |
| 104 | if ((*bios & 0x80) == 0) { // it's busy |
| 105 | while ((*bios & 0x80) == 0); |
| 106 | } |
| 107 | |
| 108 | status = *bios; |
| 109 | |
| 110 | // put another command to get out of status register mode |
| 111 | |
| 112 | *bios = 0x90; |
| 113 | myusec_delay(10); |
| 114 | |
| 115 | id1 = *(volatile uint8_t *) bios; |
| 116 | id2 = *(volatile uint8_t *) (bios + 0x01); |
| 117 | |
| 118 | // this is needed to jam it out of "read id" mode |
| 119 | *(volatile uint8_t *) (bios + 0x5555) = 0xAA; |
| 120 | *(volatile uint8_t *) (bios + 0x2AAA) = 0x55; |
| 121 | *(volatile uint8_t *) (bios + 0x5555) = 0xF0; |
| 122 | return status; |
| 123 | |
| 124 | } |
| 125 | int erase_lhf00l04_block(struct flashchip *flash, int offset) |
| 126 | { |
| 127 | volatile uint8_t *bios = flash->virt_addr + offset; |
| 128 | volatile uint8_t *wrprotect = |
| 129 | flash->virt_addr_2 + offset + 2; |
| 130 | uint8_t status; |
| 131 | |
| 132 | // clear status register |
| 133 | *bios = 0x50; |
| 134 | printf("Erase at %p\n", bios); |
| 135 | status = wait_lhf00l04(flash->virt_addr); |
| 136 | print_lhf00l04_status(status); |
| 137 | // clear write protect |
| 138 | printf("write protect is at %p\n", (wrprotect)); |
| 139 | printf("write protect is 0x%x\n", *(wrprotect)); |
| 140 | *(wrprotect) = 0; |
| 141 | printf("write protect is 0x%x\n", *(wrprotect)); |
| 142 | |
| 143 | // now start it |
| 144 | *(volatile uint8_t *) (bios) = 0x20; |
| 145 | *(volatile uint8_t *) (bios) = 0xd0; |
| 146 | myusec_delay(10); |
| 147 | // now let's see what the register is |
| 148 | status = wait_lhf00l04(flash->virt_addr); |
| 149 | print_lhf00l04_status(status); |
| 150 | printf("DONE BLOCK 0x%x\n", offset); |
| 151 | return (0); |
| 152 | } |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 153 | int erase_lhf00l04(struct flashchip *flash) |
| 154 | { |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 155 | int i; |
| 156 | unsigned int total_size = flash->total_size * 1024; |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 157 | |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 158 | printf("total_size is %d; flash->page_size is %d\n", |
| 159 | total_size, flash->page_size); |
| 160 | for (i = 0; i < total_size; i += flash->page_size) |
| 161 | erase_lhf00l04_block(flash, i); |
| 162 | printf("DONE ERASE\n"); |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 163 | return (0); |
| 164 | } |
| 165 | |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 166 | void write_page_lhf00l04(volatile uint8_t *bios, uint8_t *src, volatile uint8_t *dst, |
| 167 | int page_size) |
| 168 | { |
| 169 | int i; |
| 170 | |
| 171 | for (i = 0; i < page_size; i++) { |
| 172 | /* transfer data from source to destination */ |
| 173 | *dst = 0x40; |
| 174 | *dst++ = *src++; |
| 175 | wait_lhf00l04(bios); |
| 176 | } |
| 177 | |
| 178 | } |
| 179 | |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 180 | int write_lhf00l04(struct flashchip *flash, uint8_t *buf) |
| 181 | { |
| 182 | int i; |
| 183 | int total_size = flash->total_size * 1024, page_size = |
| 184 | flash->page_size; |
| 185 | volatile uint8_t *bios = flash->virt_addr; |
| 186 | |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 187 | erase_lhf00l04(flash); |
| 188 | if (*bios != 0xff) { |
| 189 | printf("ERASE FAILED\n"); |
| 190 | return -1; |
| 191 | } |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 192 | printf("Programming Page: "); |
| 193 | for (i = 0; i < total_size / page_size; i++) { |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 194 | printf("%04d at address: 0x%08x", i, i * page_size); |
Ronald G. Minnich | c994c97 | 2006-03-14 19:58:14 +0000 | [diff] [blame] | 195 | write_page_lhf00l04(bios, buf + i * page_size, |
| 196 | bios + i * page_size, page_size); |
| 197 | printf |
| 198 | ("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"); |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 199 | } |
| 200 | printf("\n"); |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 201 | protect_lhf00l04(bios); |
Ronald G. Minnich | 02bb789 | 2006-02-23 17:16:44 +0000 | [diff] [blame] | 202 | return (0); |
| 203 | } |