| 1 | /*␊ |
| 2 | * This file is part of the flashrom project.␊ |
| 3 | *␊ |
| 4 | * Copyright (C) 2000 Silicon Integrated System Corporation␊ |
| 5 | * Copyright (C) 2005-2007 coresystems GmbH␊ |
| 6 | * Copyright (C) 2009 Sean Nelson <audiohacked@gmail.com>␊ |
| 7 | *␊ |
| 8 | * This program is free software; you can redistribute it and/or modify␊ |
| 9 | * it under the terms of the GNU General Public License as published by␊ |
| 10 | * the Free Software Foundation; either version 2 of the License, or␊ |
| 11 | * (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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA␊ |
| 21 | */␊ |
| 22 | ␊ |
| 23 | #include "flash.h"␊ |
| 24 | #include "chipdrivers.h"␊ |
| 25 | ␊ |
| 26 | static int write_lockbits_block_49lfxxxc(struct flashctx *flash,␊ |
| 27 | ␉␉␉␉␉ unsigned long address,␊ |
| 28 | ␉␉␉␉␉ unsigned char bits)␊ |
| 29 | {␊ |
| 30 | ␉unsigned long lock = flash->virtual_registers + address + 2;␊ |
| 31 | ␉msg_cdbg("lockbits at address=0x%08lx is 0x%01x\n", lock,␊ |
| 32 | ␉␉ chip_readb(flash, lock));␊ |
| 33 | ␉chip_writeb(flash, bits, lock);␊ |
| 34 | ␊ |
| 35 | ␉return 0;␊ |
| 36 | }␊ |
| 37 | ␊ |
| 38 | static int write_lockbits_49lfxxxc(struct flashctx *flash, unsigned char bits)␊ |
| 39 | {␊ |
| 40 | ␉chipaddr registers = flash->virtual_registers;␊ |
| 41 | ␉unsigned int i, left = flash->total_size * 1024;␊ |
| 42 | ␉unsigned long address;␊ |
| 43 | ␊ |
| 44 | ␉msg_cdbg("\nbios=0x%08lx\n", registers);␊ |
| 45 | ␉for (i = 0; left > 65536; i++, left -= 65536) {␊ |
| 46 | ␉␉write_lockbits_block_49lfxxxc(flash, i * 65536, bits);␊ |
| 47 | ␉}␊ |
| 48 | ␉address = i * 65536;␊ |
| 49 | ␉write_lockbits_block_49lfxxxc(flash, address, bits);␊ |
| 50 | ␉address += 32768;␊ |
| 51 | ␉write_lockbits_block_49lfxxxc(flash, address, bits);␊ |
| 52 | ␉address += 8192;␊ |
| 53 | ␉write_lockbits_block_49lfxxxc(flash, address, bits);␊ |
| 54 | ␉address += 8192;␊ |
| 55 | ␉write_lockbits_block_49lfxxxc(flash, address, bits);␊ |
| 56 | ␊ |
| 57 | ␉return 0;␊ |
| 58 | }␊ |
| 59 | ␊ |
| 60 | int unlock_49lfxxxc(struct flashctx *flash)␊ |
| 61 | {␊ |
| 62 | ␉return write_lockbits_49lfxxxc(flash, 0);␊ |
| 63 | }␊ |
| 64 | ␊ |
| 65 | int erase_sector_49lfxxxc(struct flashctx *flash, unsigned int address,␊ |
| 66 | ␉␉␉ unsigned int sector_size)␊ |
| 67 | {␊ |
| 68 | ␉uint8_t status;␊ |
| 69 | ␉chipaddr bios = flash->virtual_memory;␊ |
| 70 | ␊ |
| 71 | ␉chip_writeb(flash, 0x30, bios);␊ |
| 72 | ␉chip_writeb(flash, 0xD0, bios + address);␊ |
| 73 | ␊ |
| 74 | ␉status = wait_82802ab(flash);␊ |
| 75 | ␉print_status_82802ab(status);␊ |
| 76 | ␊ |
| 77 | ␉/* FIXME: Check the status register for errors. */␊ |
| 78 | ␉return 0;␊ |
| 79 | }␊ |
| 80 | |
