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- /*
- * This file is part of the flashrom project.
- *
- * Copyright (C) 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
- /* Datasheet: http://download.intel.com/design/network/datashts/82559_Fast_Ethernet_Multifunction_PCI_Cardbus_Controller_Datasheet.pdf */
- #include <stdlib.h>
- #include "flash.h"
- #include "programmer.h"
- #include "hwaccess.h"
- uint8_t *nicintel_bar;
- uint8_t *nicintel_control_bar;
- const struct dev_entry nics_intel[] = {
- {PCI_VENDOR_ID_INTEL, 0x1209, NT, "Intel", "8255xER/82551IT Fast Ethernet Controller"},
- {PCI_VENDOR_ID_INTEL, 0x1229, OK, "Intel", "82557/8/9/0/1 Ethernet Pro 100"},
- {0},
- };
- /* Arbitrary limit, taken from the datasheet I just had lying around.
- * 128 kByte on the 82559 device. Or not. Depends on whom you ask.
- */
- #define NICINTEL_MEMMAP_SIZE (128 * 1024)
- #define NICINTEL_MEMMAP_MASK (NICINTEL_MEMMAP_SIZE - 1)
- #define NICINTEL_CONTROL_MEMMAP_SIZE 0x10
- #define CSR_FCR 0x0c
- static void nicintel_chip_writeb(const struct flashctx *flash, uint8_t val,
- chipaddr addr);
- static uint8_t nicintel_chip_readb(const struct flashctx *flash,
- const chipaddr addr);
- static const struct par_master par_master_nicintel = {
- .chip_readb = nicintel_chip_readb,
- .chip_readw = fallback_chip_readw,
- .chip_readl = fallback_chip_readl,
- .chip_readn = fallback_chip_readn,
- .chip_writeb = nicintel_chip_writeb,
- .chip_writew = fallback_chip_writew,
- .chip_writel = fallback_chip_writel,
- .chip_writen = fallback_chip_writen,
- };
- int nicintel_init(void)
- {
- struct pci_dev *dev = NULL;
- uintptr_t addr;
- /* Needed only for PCI accesses on some platforms.
- * FIXME: Refactor that into get_mem_perms/rget_io_perms/get_pci_perms?
- */
- if (rget_io_perms())
- return 1;
- /* FIXME: BAR2 is not available if the device uses the CardBus function. */
- dev = pcidev_init(nics_intel, PCI_BASE_ADDRESS_2);
- if (!dev)
- return 1;
- addr = pcidev_readbar(dev, PCI_BASE_ADDRESS_2);
- if (!addr)
- return 1;
- nicintel_bar = rphysmap("Intel NIC flash", addr, NICINTEL_MEMMAP_SIZE);
- if (nicintel_bar == ERROR_PTR)
- return 1;
- addr = pcidev_readbar(dev, PCI_BASE_ADDRESS_0);
- if (!addr)
- return 1;
- nicintel_control_bar = rphysmap("Intel NIC control/status reg", addr, NICINTEL_CONTROL_MEMMAP_SIZE);
- if (nicintel_control_bar == ERROR_PTR)
- return 1;
- /* FIXME: This register is pretty undocumented in all publicly available
- * documentation from Intel. Let me quote the complete info we have:
- * "Flash Control Register: The Flash Control register allows the CPU to
- * enable writes to an external Flash. The Flash Control Register is a
- * 32-bit field that allows access to an external Flash device."
- * Ah yes, we also know where it is, but we have absolutely _no_ idea
- * what we should do with it. Write 0x0001 because we have nothing
- * better to do with our time.
- */
- pci_rmmio_writew(0x0001, nicintel_control_bar + CSR_FCR);
- max_rom_decode.parallel = NICINTEL_MEMMAP_SIZE;
- register_par_master(&par_master_nicintel, BUS_PARALLEL);
- return 0;
- }
- static void nicintel_chip_writeb(const struct flashctx *flash, uint8_t val,
- chipaddr addr)
- {
- pci_mmio_writeb(val, nicintel_bar + (addr & NICINTEL_MEMMAP_MASK));
- }
- static uint8_t nicintel_chip_readb(const struct flashctx *flash,
- const chipaddr addr)
- {
- return pci_mmio_readb(nicintel_bar + (addr & NICINTEL_MEMMAP_MASK));
- }
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