2 * This file is part of the flashrom project.
4 * Copyright (C) 2000 Silicon Integrated System Corporation
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 // I need that Berkeley bit-map printer
26 void print_lhf00l04_status(uint8_t status)
28 printf("%s", status & 0x80 ? "Ready:" : "Busy:");
29 printf("%s", status & 0x40 ? "BE SUSPEND:" : "BE RUN/FINISH:");
30 printf("%s", status & 0x20 ? "BE ERROR:" : "BE OK:");
31 printf("%s", status & 0x10 ? "PROG ERR:" : "PROG OK:");
32 printf("%s", status & 0x8 ? "VP ERR:" : "VPP OK:");
33 printf("%s", status & 0x4 ? "PROG SUSPEND:" : "PROG RUN/FINISH:");
34 printf("%s", status & 0x2 ? "WP|TBL#|WP#,ABORT:" : "UNLOCK:");
37 int probe_lhf00l04(struct flashchip *flash)
39 volatile uint8_t *bios = flash->virtual_memory;
44 *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
45 *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
46 *(volatile uint8_t *)(bios + 0x5555) = 0x90;
54 id1 = *(volatile uint8_t *)bios;
55 id2 = *(volatile uint8_t *)(bios + 0x01);
58 *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
59 *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
60 *(volatile uint8_t *)(bios + 0x5555) = 0xF0;
64 printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
66 if (id1 != flash->manufacture_id || id2 != flash->model_id)
69 map_flash_registers(flash);
74 uint8_t wait_lhf00l04(volatile uint8_t *bios)
80 if ((*bios & 0x80) == 0) { // it's busy
81 while ((*bios & 0x80) == 0) ;
86 // put another command to get out of status register mode
91 id1 = *(volatile uint8_t *)bios;
92 id2 = *(volatile uint8_t *)(bios + 0x01);
94 // this is needed to jam it out of "read id" mode
95 *(volatile uint8_t *)(bios + 0x5555) = 0xAA;
96 *(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
97 *(volatile uint8_t *)(bios + 0x5555) = 0xF0;
102 int erase_lhf00l04_block(struct flashchip *flash, int offset)
104 volatile uint8_t *bios = flash->virtual_memory + offset;
105 volatile uint8_t *wrprotect = flash->virtual_registers + offset + 2;
108 // clear status register
110 printf("Erase at %p\n", bios);
111 status = wait_lhf00l04(flash->virtual_memory);
112 print_lhf00l04_status(status);
113 // clear write protect
114 printf("write protect is at %p\n", (wrprotect));
115 printf("write protect is 0x%x\n", *(wrprotect));
117 printf("write protect is 0x%x\n", *(wrprotect));
120 *(volatile uint8_t *)(bios) = 0x20;
121 *(volatile uint8_t *)(bios) = 0xd0;
123 // now let's see what the register is
124 status = wait_lhf00l04(flash->virtual_memory);
125 print_lhf00l04_status(status);
126 printf("DONE BLOCK 0x%x\n", offset);
131 int erase_lhf00l04(struct flashchip *flash)
134 unsigned int total_size = flash->total_size * 1024;
136 printf("total_size is %d; flash->page_size is %d\n",
137 total_size, flash->page_size);
138 for (i = 0; i < total_size; i += flash->page_size)
139 erase_lhf00l04_block(flash, i);
140 printf("DONE ERASE\n");
145 void write_page_lhf00l04(volatile uint8_t *bios, uint8_t *src,
146 volatile uint8_t *dst, int page_size)
150 for (i = 0; i < page_size; i++) {
151 /* transfer data from source to destination */
158 int write_lhf00l04(struct flashchip *flash, uint8_t *buf)
161 int total_size = flash->total_size * 1024;
162 int page_size = flash->page_size;
163 volatile uint8_t *bios = flash->virtual_memory;
165 erase_lhf00l04(flash);
167 printf("ERASE FAILED!\n");
170 printf("Programming page: ");
171 for (i = 0; i < total_size / page_size; i++) {
172 printf("%04d at address: 0x%08x", i, i * page_size);
173 write_page_lhf00l04(bios, buf + i * page_size,
174 bios + i * page_size, page_size);
175 printf("\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");