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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2009 Joerg Fischer <turboj@web.de>
*
* 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 <stdlib.h>
#include "flash.h"
#include "programmer.h"
#include "hwaccess_physmap.h"
#include "platform/pci.h"
#define PCI_VENDOR_ID_DRKAISER 0x1803
#define PCI_MAGIC_DRKAISER_ADDR 0x50
#define PCI_MAGIC_DRKAISER_VALUE 0xa971
#define DRKAISER_MEMMAP_SIZE (1024 * 128)
/* Mask to restrict flash accesses to the 128kB memory window. */
#define DRKAISER_MEMMAP_MASK ((1 << 17) - 1)
struct drkaiser_data {
struct pci_dev *dev;
uint8_t *bar;
uint16_t flash_access;
};
static const struct dev_entry drkaiser_pcidev[] = {
{0x1803, 0x5057, OK, "Dr. Kaiser", "PC-Waechter (Actel FPGA)"},
{0},
};
static void drkaiser_chip_writeb(const struct flashctx *flash, uint8_t val,
chipaddr addr)
{
struct drkaiser_data *data = flash->mst->par.data;
pci_mmio_writeb(val, data->bar + (addr & DRKAISER_MEMMAP_MASK));
}
static uint8_t drkaiser_chip_readb(const struct flashctx *flash,
const chipaddr addr)
{
struct drkaiser_data *data = flash->mst->par.data;
return pci_mmio_readb(data->bar + (addr & DRKAISER_MEMMAP_MASK));
}
static int drkaiser_shutdown(void *par_data)
{
struct drkaiser_data *data = par_data;
/* Restore original flash writing state. */
pci_write_word(data->dev, PCI_MAGIC_DRKAISER_ADDR, data->flash_access);
free(par_data);
return 0;
}
static const struct par_master par_master_drkaiser = {
.chip_readb = drkaiser_chip_readb,
.chip_readw = fallback_chip_readw,
.chip_readl = fallback_chip_readl,
.chip_readn = fallback_chip_readn,
.chip_writeb = drkaiser_chip_writeb,
.chip_writew = fallback_chip_writew,
.chip_writel = fallback_chip_writel,
.chip_writen = fallback_chip_writen,
.shutdown = drkaiser_shutdown,
};
static int drkaiser_init(void)
{
struct pci_dev *dev = NULL;
uint32_t addr;
uint8_t *bar;
dev = pcidev_init(drkaiser_pcidev, PCI_BASE_ADDRESS_2);
if (!dev)
return 1;
addr = pcidev_readbar(dev, PCI_BASE_ADDRESS_2);
if (!addr)
return 1;
/* Map 128kB flash memory window. */
bar = rphysmap("Dr. Kaiser PC-Waechter flash memory", addr, DRKAISER_MEMMAP_SIZE);
if (bar == ERROR_PTR)
return 1;
struct drkaiser_data *data = calloc(1, sizeof(*data));
if (!data) {
msg_perr("Unable to allocate space for PAR master data\n");
return 1;
}
data->dev = dev;
data->bar = bar;
/* Write magic register to enable flash write. */
data->flash_access = pci_read_word(dev, PCI_MAGIC_DRKAISER_ADDR);
pci_write_word(dev, PCI_MAGIC_DRKAISER_ADDR, PCI_MAGIC_DRKAISER_VALUE);
max_rom_decode.parallel = 128 * 1024;
return register_par_master(&par_master_drkaiser, BUS_PARALLEL, data);
}
const struct programmer_entry programmer_drkaiser = {
.name = "drkaiser",
.type = PCI,
.devs.dev = drkaiser_pcidev,
.init = drkaiser_init,
.map_flash_region = fallback_map,
.unmap_flash_region = fallback_unmap,
.delay = internal_delay,
};
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