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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2000 Silicon Integrated System Corporation
* Copyright (C) 2004 Tyan Corp <yhlu@tyan.com>
* Copyright (C) 2005-2008 coresystems GmbH
* Copyright (C) 2008,2009 Carl-Daniel Hailfinger
* Copyright (C) 2016 secunet Security Networks AG
* (Written by Nico Huber <nico.huber@secunet.com> for secunet)
* 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; version 2 of the License.
*
* 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"
void chip_writeb(const struct flashctx *flash, uint8_t val, chipaddr addr)
{
flash->mst->par.chip_writeb(flash, val, addr);
}
/* Little-endian fallback for drivers not supporting 16 bit accesses */
static 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);
}
void chip_writew(const struct flashctx *flash, uint16_t val, chipaddr addr)
{
if (flash->mst->par.chip_writew)
flash->mst->par.chip_writew(flash, val, addr);
fallback_chip_writew(flash, val, addr);
}
/* Little-endian fallback for drivers not supporting 32 bit accesses */
static 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);
}
void chip_writel(const struct flashctx *flash, uint32_t val, chipaddr addr)
{
if (flash->mst->par.chip_writel)
flash->mst->par.chip_writel(flash, val, addr);
fallback_chip_writel(flash, val, addr);
}
static 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 chip_writen(const struct flashctx *flash, const uint8_t *buf, chipaddr addr, size_t len)
{
if (flash->mst->par.chip_writen)
flash->mst->par.chip_writen(flash, buf, addr, len);
fallback_chip_writen(flash, buf, addr, len);
}
uint8_t chip_readb(const struct flashctx *flash, const chipaddr addr)
{
return flash->mst->par.chip_readb(flash, addr);
}
/* Little-endian fallback for drivers not supporting 16 bit accesses */
static 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;
}
uint16_t chip_readw(const struct flashctx *flash, const chipaddr addr)
{
if (flash->mst->par.chip_readw)
return flash->mst->par.chip_readw(flash, addr);
return fallback_chip_readw(flash, addr);
}
/* Little-endian fallback for drivers not supporting 32 bit accesses */
static 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;
}
uint32_t chip_readl(const struct flashctx *flash, const chipaddr addr)
{
if (flash->mst->par.chip_readl)
return flash->mst->par.chip_readl(flash, addr);
return fallback_chip_readl(flash, addr);
}
static 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;
}
void chip_readn(const struct flashctx *flash, uint8_t *buf, chipaddr addr,
size_t len)
{
if (flash->mst->par.chip_readn)
flash->mst->par.chip_readn(flash, buf, addr, len);
fallback_chip_readn(flash, buf, addr, len);
}
int register_par_master(const struct par_master *mst,
const enum chipbustype buses,
void *data)
{
struct registered_master rmst = {0};
if (mst->shutdown) {
if (register_shutdown(mst->shutdown, data)) {
mst->shutdown(data); /* cleanup */
return 1;
}
}
/* Bus masters supporting FWH/LPC cannot use chip physical maps, distinct
* mappings are needed to support chips with FEATURE_REGISTERMAP
*/
if ((buses & (BUS_FWH | BUS_LPC)) && !mst->map_flash_region) {
msg_perr("%s called with incomplete master definition. "
"FWH/LPC masters must provide memory mappings. "
"Please report a bug at flashrom@flashrom.org\n",
__func__);
return ERROR_FLASHROM_BUG;
}
if (!mst->chip_writeb || !mst->chip_readb) {
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);
}
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