| /* |
| * This file is part of the flashrom project. |
| * |
| * Copyright (C) 2009,2010,2011 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. |
| */ |
| |
| #include "flash.h" |
| #include "programmer.h" |
| |
| /* No-op shutdown() for programmers which don't need special handling */ |
| int noop_shutdown(void) |
| { |
| return 0; |
| } |
| |
| /* Fallback map() for programmers which don't need special handling */ |
| void *fallback_map(const char *descr, uintptr_t phys_addr, size_t len) |
| { |
| /* FIXME: Should return phys_addr. */ |
| return NULL; |
| } |
| |
| /* No-op/fallback unmap() for programmers which don't need special handling */ |
| void fallback_unmap(void *virt_addr, size_t len) |
| { |
| } |
| |
| /* Little-endian fallback for drivers not supporting 16 bit accesses */ |
| void fallback_chip_writew(const struct flashctx *flash, uint16_t val, |
| chipaddr addr) |
| { |
| chip_writeb(flash, val & 0xff, addr); |
| chip_writeb(flash, (val >> 8) & 0xff, addr + 1); |
| } |
| |
| /* Little-endian fallback for drivers not supporting 16 bit accesses */ |
| uint16_t fallback_chip_readw(const struct flashctx *flash, const chipaddr addr) |
| { |
| uint16_t val; |
| val = chip_readb(flash, addr); |
| val |= chip_readb(flash, addr + 1) << 8; |
| return val; |
| } |
| |
| /* Little-endian fallback for drivers not supporting 32 bit accesses */ |
| void fallback_chip_writel(const struct flashctx *flash, uint32_t val, |
| chipaddr addr) |
| { |
| chip_writew(flash, val & 0xffff, addr); |
| chip_writew(flash, (val >> 16) & 0xffff, addr + 2); |
| } |
| |
| /* Little-endian fallback for drivers not supporting 32 bit accesses */ |
| uint32_t fallback_chip_readl(const struct flashctx *flash, const chipaddr addr) |
| { |
| uint32_t val; |
| val = chip_readw(flash, addr); |
| val |= chip_readw(flash, addr + 2) << 16; |
| return val; |
| } |
| |
| void fallback_chip_writen(const struct flashctx *flash, const uint8_t *buf, chipaddr addr, size_t len) |
| { |
| size_t i; |
| for (i = 0; i < len; i++) |
| chip_writeb(flash, buf[i], addr + i); |
| return; |
| } |
| |
| void fallback_chip_readn(const struct flashctx *flash, uint8_t *buf, |
| chipaddr addr, size_t len) |
| { |
| size_t i; |
| for (i = 0; i < len; i++) |
| buf[i] = chip_readb(flash, addr + i); |
| return; |
| } |
| |
| int register_par_master(const struct par_master *mst, |
| const enum chipbustype buses) |
| { |
| struct registered_master rmst; |
| if (!mst->chip_writeb || !mst->chip_writew || !mst->chip_writel || |
| !mst->chip_writen || !mst->chip_readb || !mst->chip_readw || |
| !mst->chip_readl || !mst->chip_readn) { |
| msg_perr("%s called with incomplete master definition. " |
| "Please report a bug at flashrom@flashrom.org\n", |
| __func__); |
| return ERROR_FLASHROM_BUG; |
| } |
| |
| rmst.buses_supported = buses; |
| rmst.par = *mst; |
| return register_master(&rmst); |
| } |
| |
| /* The limit of 4 is totally arbitrary. */ |
| #define MASTERS_MAX 4 |
| struct registered_master registered_masters[MASTERS_MAX]; |
| int registered_master_count = 0; |
| |
| /* This function copies the struct registered_master parameter. */ |
| int register_master(const struct registered_master *mst) |
| { |
| if (registered_master_count >= MASTERS_MAX) { |
| msg_perr("Tried to register more than %i master " |
| "interfaces.\n", MASTERS_MAX); |
| return ERROR_FLASHROM_LIMIT; |
| } |
| registered_masters[registered_master_count] = *mst; |
| registered_master_count++; |
| |
| return 0; |
| } |
| |
| enum chipbustype get_buses_supported(void) |
| { |
| int i; |
| enum chipbustype ret = BUS_NONE; |
| |
| for (i = 0; i < registered_master_count; i++) |
| ret |= registered_masters[i].buses_supported; |
| |
| return ret; |
| } |