/* * This file is part of the flashrom project. * * Copyright (C) 2007 Carl-Daniel Hailfinger * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ /* * EN29F512 has 1C,21 * EN29F010 has 1C,20 * EN29F040A has 1C,04 * EN29LV010 has 1C,6E and uses short F0 reset sequence * EN29LV040(A) has 1C,4F and uses short F0 reset sequence */ #include #include #include "flash.h" int probe_en29f512(struct flashchip *flash) { volatile uint8_t *bios = flash->virtual_memory; uint8_t id1, id2; writeb(0xAA, bios + 0x555); writeb(0x55, bios + 0x2AA); writeb(0x90, bios + 0x555); myusec_delay(10); id1 = readb(bios + 0x100); id2 = readb(bios + 0x101); /* exit by writing F0 anywhere? or the code below */ writeb(0xAA, bios + 0x555); writeb(0x55, bios + 0x2AA); writeb(0xF0, bios + 0x555); printf_debug("%s: id1 0x%02x, id2 0x%02x\n", __FUNCTION__, id1, id2); if (id1 == flash->manufacture_id && id2 == flash->model_id) return 1; return 0; } /* * EN29F002AT has 1C,92 * EN29F002AB has 1C,97 */ /* This does not seem to function properly for EN29F002NT. */ int probe_en29f002a(struct flashchip *flash) { volatile uint8_t *bios = flash->virtual_memory; uint8_t id1, id2; writeb(0xAA, bios + 0x555); writeb(0x55, bios + 0xAAA); writeb(0x90, bios + 0x555); myusec_delay(10); id1 = readb(bios + 0x100); id2 = readb(bios + 0x101); /* exit by writing F0 anywhere? or the code below */ writeb(0xAA, bios + 0x555); writeb(0x55, bios + 0xAAA); writeb(0xF0, bios + 0x555); printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2); if (id1 == flash->manufacture_id && id2 == flash->model_id) return 1; return 0; } /* The EN29F002 chip needs repeated single byte writing, no block writing. */ int write_en29f002a(struct flashchip *flash, uint8_t *buf) { int i; int total_size = flash->total_size * 1024; volatile uint8_t *bios = flash->virtual_memory; volatile uint8_t *dst = bios; // *bios = 0xF0; myusec_delay(10); erase_chip_jedec(flash); printf("Programming page: "); for (i = 0; i < total_size; i++) { /* write to the sector */ if ((i & 0xfff) == 0) printf("address: 0x%08lx", (unsigned long)i); writeb(0xAA, bios + 0x5555); writeb(0x55, bios + 0x2AAA); writeb(0xA0, bios + 0x5555); writeb(*buf++, dst++); /* wait for Toggle bit ready */ toggle_ready_jedec(dst); if ((i & 0xfff) == 0) printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"); } printf("\n"); return 0; }