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Diffstat (limited to 'atapromise.c')
| -rw-r--r-- | atapromise.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/atapromise.c b/atapromise.c new file mode 100644 index 0000000..d44ff0d --- /dev/null +++ b/atapromise.c @@ -0,0 +1,177 @@ +/* + * This file is part of the flashrom project. + * + * Copyright (C) 2015 Joseph C. Lehner <joseph.c.lehner@gmail.com> + * + * 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. + * + * 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 + */ + +#if defined(__i386__) || defined(__x86_64__) + +#include <string.h> +#include <stdlib.h> +#include "flash.h" +#include "programmer.h" +#include "hwaccess.h" + +#define MAX_ROM_DECODE (32 * 1024) +#define ADDR_MASK (MAX_ROM_DECODE - 1) + +/* + * In the absence of any public docs on the PDC2026x family, this programmer was created through a mix of + * reverse-engineering and trial and error. + * + * The only device tested is an Ultra100 controller, but the logic for programming the other 2026x controllers + * is the same, so it should, in theory, work for those as well. + * + * While the tested Ultra100 controller used a 128 kB MX29F001T chip, A16 and A15 showed continuity to ground, + * thus limiting the the programmer on this card to 32 kB. Without other controllers to test this programmer on, + * this is currently a hard limit. Note that ROM files for these controllers are 16 kB only. + * + * Since flashrom does not support accessing flash chips larger than the size limit of the programmer (the + * tested Ultra100 uses a 128 kB MX29F001T chip), the chip size is hackishly adjusted in atapromise_limit_chip. + */ + +static uint32_t io_base_addr = 0; +static uint32_t rom_base_addr = 0; + +static uint8_t *atapromise_bar = NULL; +static size_t rom_size = 0; + +const struct dev_entry ata_promise[] = { + {0x105a, 0x4d38, NT, "Promise", "PDC20262 (FastTrak66/Ultra66)"}, + {0x105a, 0x0d30, NT, "Promise", "PDC20265 (FastTrak100 Lite/Ultra100)"}, + {0x105a, 0x4d30, OK, "Promise", "PDC20267 (FastTrak100/Ultra100)"}, + {0}, +}; + +static void atapromise_chip_writeb(const struct flashctx *flash, uint8_t val, chipaddr addr); +static uint8_t atapromise_chip_readb(const struct flashctx *flash, const chipaddr addr); + +static const struct par_master par_master_atapromise = { + .chip_readb = atapromise_chip_readb, + .chip_readw = fallback_chip_readw, + .chip_readl = fallback_chip_readl, + .chip_readn = fallback_chip_readn, + .chip_writeb = atapromise_chip_writeb, + .chip_writew = fallback_chip_writew, + .chip_writel = fallback_chip_writel, + .chip_writen = fallback_chip_writen, +}; + +void *atapromise_map(const char *descr, uintptr_t phys_addr, size_t len) +{ + /* In case fallback_map ever returns something other than NULL. */ + return NULL; +} + +static void atapromise_limit_chip(struct flashchip *chip) +{ + static uint32_t last_model_id = 0; + unsigned int i, size; + + if (chip->model_id == last_model_id) + return; + + size = chip->total_size * 1024; + if (size > rom_size) { + /* Undefine all block_erasers that don't operate on the whole chip, + * and adjust the eraseblock size of the one that does. + */ + for (i = 0; i < NUM_ERASEFUNCTIONS; ++i) { + if (chip->block_erasers[i].eraseblocks[0].size != size) { + chip->block_erasers[i].eraseblocks[0].count = 0; + chip->block_erasers[i].block_erase = NULL; + } else { + chip->block_erasers[i].eraseblocks[0].size = rom_size; + break; + } + } + + if (i != NUM_ERASEFUNCTIONS) { + chip->total_size = rom_size / 1024; + if (chip->page_size > rom_size) + chip->page_size = rom_size; + } else { + msg_pdbg("Failed to adjust size of chip \"%s\" (%d kB).\n", chip->name, + chip->total_size); + } + } + + last_model_id = chip->model_id; +} + +int atapromise_init(void) +{ + struct pci_dev *dev = NULL; + + if (rget_io_perms()) + return 1; + + dev = pcidev_init(ata_promise, PCI_BASE_ADDRESS_4); + if (!dev) + return 1; + + io_base_addr = pcidev_readbar(dev, PCI_BASE_ADDRESS_4) & 0xfffe; + if (!io_base_addr) { + return 1; + } + + /* Not exactly sure what this does, because flashing seems to work + * well without it. However, PTIFLASH does it, so we do it too. + */ + OUTB(1, io_base_addr + 0x10); + + rom_base_addr = pcidev_readbar(dev, PCI_BASE_ADDRESS_5); + if (!rom_base_addr) { + msg_pdbg("Failed to read BAR5\n"); + return 1; + } + + rom_size = dev->rom_size > MAX_ROM_DECODE ? MAX_ROM_DECODE : dev->rom_size; + atapromise_bar = (uint8_t*)rphysmap("Promise", rom_base_addr, rom_size); + if (atapromise_bar == ERROR_PTR) { + return 1; + } + + max_rom_decode.parallel = rom_size; + register_par_master(&par_master_atapromise, BUS_PARALLEL); + + msg_pwarn("Do not use this device as a generic programmer. It will leave anything outside\n" + "the first %zu kB of the flash chip in an undefined state. It works fine for the\n" + "purpose of updating the firmware of this device (padding may neccessary).\n", + rom_size / 1024); + + return 0; +} + +static void atapromise_chip_writeb(const struct flashctx *flash, uint8_t val, chipaddr addr) +{ + uint32_t data; + + atapromise_limit_chip(flash->chip); + data = (rom_base_addr + (addr & ADDR_MASK)) << 8 | val; + OUTL(data, io_base_addr + 0x14); +} + +static uint8_t atapromise_chip_readb(const struct flashctx *flash, const chipaddr addr) +{ + atapromise_limit_chip(flash->chip); + return pci_mmio_readb(atapromise_bar + (addr & ADDR_MASK)); +} + +#else +#error PCI port I/O access is not supported on this architecture yet. +#endif |
