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+/*
+ * 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
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