blob: c276a69be691025d3f2ed118dddd5dd7970e8eed [file] [log] [blame]
/*
* 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"
/* 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,
void *data)
{
struct registered_master rmst = {0};
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;
if (data)
rmst.par.data = data;
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;
}