summaryrefslogtreecommitdiff
path: root/util/flashrom/chipset_enable.c
diff options
context:
space:
mode:
Diffstat (limited to 'util/flashrom/chipset_enable.c')
-rw-r--r--util/flashrom/chipset_enable.c469
1 files changed, 469 insertions, 0 deletions
diff --git a/util/flashrom/chipset_enable.c b/util/flashrom/chipset_enable.c
new file mode 100644
index 0000000000..8add4d9de0
--- /dev/null
+++ b/util/flashrom/chipset_enable.c
@@ -0,0 +1,469 @@
+/*
+ * flash rom utility: enable flash writes
+ *
+ * Copyright (C) 2000 Silicon Integrated System Corporation
+ * Copyright (C) 2005-2007 coresystems GmbH <stepan@coresystems.de>
+ * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2
+ *
+ */
+
+#include <stdio.h>
+#include <pci/pci.h>
+#include <stdlib.h>
+
+#include "flash.h"
+#include "debug.h"
+
+static int enable_flash_sis630(struct pci_dev *dev, char *name)
+{
+ char b;
+
+ /* Enable 0xFFF8000~0xFFFF0000 decoding on SiS 540/630 */
+ outl(0x80000840, 0x0cf8);
+ b = inb(0x0cfc) | 0x0b;
+ outb(b, 0xcfc);
+ /* Flash write enable on SiS 540/630 */
+ outl(0x80000845, 0x0cf8);
+ b = inb(0x0cfd) | 0x40;
+ outb(b, 0xcfd);
+
+ /* The same thing on SiS 950 SuperIO side */
+ outb(0x87, 0x2e);
+ outb(0x01, 0x2e);
+ outb(0x55, 0x2e);
+ outb(0x55, 0x2e);
+
+ if (inb(0x2f) != 0x87) {
+ outb(0x87, 0x4e);
+ outb(0x01, 0x4e);
+ outb(0x55, 0x4e);
+ outb(0xaa, 0x4e);
+ if (inb(0x4f) != 0x87) {
+ printf("Can not access SiS 950\n");
+ return -1;
+ }
+ outb(0x24, 0x4e);
+ b = inb(0x4f) | 0xfc;
+ outb(0x24, 0x4e);
+ outb(b, 0x4f);
+ outb(0x02, 0x4e);
+ outb(0x02, 0x4f);
+ }
+
+ outb(0x24, 0x2e);
+ printf("2f is %#x\n", inb(0x2f));
+ b = inb(0x2f) | 0xfc;
+ outb(0x24, 0x2e);
+ outb(b, 0x2f);
+
+ outb(0x02, 0x2e);
+ outb(0x02, 0x2f);
+
+ return 0;
+}
+
+/* Datasheet:
+ * - Name: 82371AB PCI-TO-ISA / IDE XCELERATOR (PIIX4)
+ * - URL: http://www.intel.com/design/intarch/datashts/290562.htm
+ * - PDF: http://www.intel.com/design/intarch/datashts/29056201.pdf
+ * - Order Number: 290562-001
+ */
+static int enable_flash_piix4(struct pci_dev *dev, char *name)
+{
+ uint16_t old, new;
+ uint16_t xbcs = 0x4e; /* X-Bus Chip Select register. */
+
+ old = pci_read_word(dev, xbcs);
+
+ /* Set bit 9: 1-Meg Extended BIOS Enable (PCI master accesses to
+ FFF00000-FFF7FFFF are forwarded to ISA).
+ Set bit 7: Extended BIOS Enable (PCI master accesses to
+ FFF80000-FFFDFFFF are forwarded to ISA).
+ Set bit 6: Lower BIOS Enable (PCI master, or ISA master accesses to
+ the lower 64-Kbyte BIOS block (E0000-EFFFF) at the top
+ of 1 Mbyte, or the aliases at the top of 4 Gbyte
+ (FFFE0000-FFFEFFFF) result in the generation of BIOSCS#.
+ Note: Accesses to FFFF0000-FFFFFFFF are always forwarded to ISA.
+ Set bit 2: BIOSCS# Write Enable (1=enable, 0=disable). */
+ new = old | 0x2c4;
+
+ if (new == old)
+ return 0;
+
+ pci_write_word(dev, xbcs, new);
+
+ if (pci_read_word(dev, xbcs) != new) {
+ printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", xbcs, new, name);
+ return -1;
+ }
+ return 0;
+}
+
+static int enable_flash_ich(struct pci_dev *dev, char *name, int bios_cntl)
+{
+ /* register 4e.b gets or'ed with one */
+ uint8_t old, new;
+
+ /* if it fails, it fails. There are so many variations of broken mobos
+ * that it is hard to argue that we should quit at this point.
+ */
+
+ /* Note: the ICH0-ICH5 BIOS_CNTL register is actually 16 bit wide, but
+ * just treating it as 8 bit wide seems to work fine in practice.
+ */
+
+ /* see ie. page 375 of "Intel ICH7 External Design Specification"
+ * http://download.intel.com/design/chipsets/datashts/30701302.pdf
+ */
+
+ old = pci_read_byte(dev, bios_cntl);
+
+ new = old | 1;
+
+ if (new == old)
+ return 0;
+
+ pci_write_byte(dev, bios_cntl, new);
+
+ if (pci_read_byte(dev, bios_cntl) != new) {
+ printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
+ bios_cntl, new, name);
+ return -1;
+ }
+ return 0;
+}
+
+static int enable_flash_ich_4e(struct pci_dev *dev, char *name)
+{
+ return enable_flash_ich(dev, name, 0x4e);
+}
+
+static int enable_flash_ich_dc(struct pci_dev *dev, char *name)
+{
+ return enable_flash_ich(dev, name, 0xdc);
+}
+
+/*
+ *
+ */
+static int
+enable_flash_vt823x(struct pci_dev *dev, char *name)
+{
+ uint8_t val;
+
+ /* ROM Write enable */
+ val = pci_read_byte(dev, 0x40);
+ val |= 0x10;
+ pci_write_byte(dev, 0x40, val);
+
+ if (pci_read_byte(dev, 0x40) != val) {
+ printf("\nWARNING: Failed to enable ROM Write on \"%s\"\n",
+ name);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int enable_flash_cs5530(struct pci_dev *dev, char *name)
+{
+ uint8_t new;
+
+ pci_write_byte(dev, 0x52, 0xee);
+
+ new = pci_read_byte(dev, 0x52);
+
+ if (new != 0xee) {
+ printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
+ 0x52, new, name);
+ return -1;
+ }
+
+ new = pci_read_byte(dev, 0x5b) | 0x20;
+ pci_write_byte(dev, 0x5b, new);
+
+ return 0;
+}
+
+
+static int enable_flash_sc1100(struct pci_dev *dev, char *name)
+{
+ uint8_t new;
+
+ pci_write_byte(dev, 0x52, 0xee);
+
+ new = pci_read_byte(dev, 0x52);
+
+ if (new != 0xee) {
+ printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
+ 0x52, new, name);
+ return -1;
+ }
+ return 0;
+}
+
+static int enable_flash_sis5595(struct pci_dev *dev, char *name)
+{
+ uint8_t new, newer;
+
+ new = pci_read_byte(dev, 0x45);
+
+ /* clear bit 5 */
+ new &= (~0x20);
+ /* set bit 2 */
+ new |= 0x4;
+
+ pci_write_byte(dev, 0x45, new);
+
+ newer = pci_read_byte(dev, 0x45);
+ if (newer != new) {
+ printf("tried to set register 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
+ 0x45, new, name);
+ printf("Stuck at 0x%x\n", newer);
+ return -1;
+ }
+ return 0;
+}
+
+static int enable_flash_amd8111(struct pci_dev *dev, char *name)
+{
+ /* register 4e.b gets or'ed with one */
+ uint8_t old, new;
+ /* if it fails, it fails. There are so many variations of broken mobos
+ * that it is hard to argue that we should quit at this point.
+ */
+
+ /* enable decoding at 0xffb00000 to 0xffffffff */
+ old = pci_read_byte(dev, 0x43);
+ new = old | 0xC0;
+ if (new != old) {
+ pci_write_byte(dev, 0x43, new);
+ if (pci_read_byte(dev, 0x43) != new) {
+ printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
+ 0x43, new, name);
+ }
+ }
+
+ old = pci_read_byte(dev, 0x40);
+ new = old | 0x01;
+ if (new == old)
+ return 0;
+ pci_write_byte(dev, 0x40, new);
+
+ if (pci_read_byte(dev, 0x40) != new) {
+ printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
+ 0x40, new, name);
+ return -1;
+ }
+ return 0;
+}
+
+static int enable_flash_ck804(struct pci_dev *dev, char *name)
+{
+ /* register 4e.b gets or'ed with one */
+ uint8_t old, new;
+ /* if it fails, it fails. There are so many variations of broken mobos
+ * that it is hard to argue that we should quit at this point.
+ */
+
+ /* dump_pci_device(dev); */
+
+ old = pci_read_byte(dev, 0x88);
+ new = old | 0xc0;
+ if (new != old) {
+ pci_write_byte(dev, 0x88, new);
+ if (pci_read_byte(dev, 0x88) != new) {
+ printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
+ 0x88, new, name);
+ }
+ }
+
+ old = pci_read_byte(dev, 0x6d);
+ new = old | 0x01;
+ if (new == old)
+ return 0;
+ pci_write_byte(dev, 0x6d, new);
+
+ if (pci_read_byte(dev, 0x6d) != new) {
+ printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
+ 0x6d, new, name);
+ return -1;
+ }
+ return 0;
+}
+
+static int enable_flash_sb400(struct pci_dev *dev, char *name)
+{
+ uint8_t tmp;
+
+ struct pci_filter f;
+ struct pci_dev *smbusdev;
+
+ /* then look for the smbus device */
+ pci_filter_init((struct pci_access *) 0, &f);
+ f.vendor = 0x1002;
+ f.device = 0x4372;
+
+ for (smbusdev = pacc->devices; smbusdev; smbusdev = smbusdev->next) {
+ if (pci_filter_match(&f, smbusdev)) {
+ break;
+ }
+ }
+
+ if(!smbusdev) {
+ fprintf(stderr, "ERROR: SMBus device not found. aborting\n");
+ exit(1);
+ }
+
+ /* enable some smbus stuff */
+ tmp=pci_read_byte(smbusdev, 0x79);
+ tmp|=0x01;
+ pci_write_byte(smbusdev, 0x79, tmp);
+
+ /* change southbridge */
+ tmp=pci_read_byte(dev, 0x48);
+ tmp|=0x21;
+ pci_write_byte(dev, 0x48, tmp);
+
+ /* now become a bit silly. */
+ tmp=inb(0xc6f);
+ outb(tmp,0xeb);
+ outb(tmp, 0xeb);
+ tmp|=0x40;
+ outb(tmp, 0xc6f);
+ outb(tmp, 0xeb);
+ outb(tmp, 0xeb);
+
+ return 0;
+}
+
+static int enable_flash_mcp55(struct pci_dev *dev, char *name)
+{
+ /* register 4e.b gets or'ed with one */
+ unsigned char old, new, byte;
+ unsigned short word;
+
+ /* if it fails, it fails. There are so many variations of broken mobos
+ * that it is hard to argue that we should quit at this point.
+ */
+
+ /* dump_pci_device(dev); */
+
+ /* Set the 4MB enable bit bit */
+ byte = pci_read_byte(dev, 0x88);
+ byte |= 0xff; /* 256K */
+ pci_write_byte(dev, 0x88, byte);
+ byte = pci_read_byte(dev, 0x8c);
+ byte |= 0xff; /* 1M */
+ pci_write_byte(dev, 0x8c, byte);
+ word = pci_read_word(dev, 0x90);
+ word |= 0x7fff; /* 15M */
+ pci_write_word(dev, 0x90, word);
+
+ old = pci_read_byte(dev, 0x6d);
+ new = old | 0x01;
+ if (new == old)
+ return 0;
+ pci_write_byte(dev, 0x6d, new);
+
+ if (pci_read_byte(dev, 0x6d) != new) {
+ printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
+ 0x6d, new, name);
+ return -1;
+ }
+
+ return 0;
+
+}
+
+typedef struct penable {
+ unsigned short vendor, device;
+ char *name;
+ int (*doit) (struct pci_dev * dev, char *name);
+} FLASH_ENABLE;
+
+static FLASH_ENABLE enables[] = {
+ {0x1039, 0x0630, "SIS630", enable_flash_sis630},
+ {0x8086, 0x7110, "PIIX4/PIIX4E/PIIX4M", enable_flash_piix4},
+ {0x8086, 0x2410, "ICH", enable_flash_ich_4e},
+ {0x8086, 0x2420, "ICH0", enable_flash_ich_4e},
+ {0x8086, 0x2440, "ICH2", enable_flash_ich_4e},
+ {0x8086, 0x244c, "ICH2-M", enable_flash_ich_4e},
+ {0x8086, 0x2480, "ICH3-S", enable_flash_ich_4e},
+ {0x8086, 0x248c, "ICH3-M", enable_flash_ich_4e},
+ {0x8086, 0x24c0, "ICH4/ICH4-L", enable_flash_ich_4e},
+ {0x8086, 0x24cc, "ICH4-M", enable_flash_ich_4e},
+ {0x8086, 0x24d0, "ICH5/ICH5R", enable_flash_ich_4e},
+ {0x8086, 0x2640, "ICH6/ICH6R", enable_flash_ich_dc},
+ {0x8086, 0x2641, "ICH6-M", enable_flash_ich_dc},
+ {0x8086, 0x27b0, "ICH7DH", enable_flash_ich_dc},
+ {0x8086, 0x27b8, "ICH7/ICH7R", enable_flash_ich_dc},
+ {0x8086, 0x27b9, "ICH7M", enable_flash_ich_dc},
+ {0x8086, 0x27bd, "ICH7MDH", enable_flash_ich_dc},
+ {0x8086, 0x2810, "ICH8/ICH8R", enable_flash_ich_dc},
+ {0x8086, 0x2812, "ICH8DH", enable_flash_ich_dc},
+ {0x8086, 0x2814, "ICH8DO", enable_flash_ich_dc},
+ {0x1106, 0x8231, "VT8231", enable_flash_vt823x},
+ {0x1106, 0x3177, "VT8235", enable_flash_vt823x},
+ {0x1106, 0x3227, "VT8237", enable_flash_vt823x},
+ {0x1106, 0x0686, "VT82C686", enable_flash_amd8111},
+ {0x1078, 0x0100, "CS5530", enable_flash_cs5530},
+ {0x100b, 0x0510, "SC1100", enable_flash_sc1100},
+ {0x1039, 0x0008, "SIS5595", enable_flash_sis5595},
+ {0x1022, 0x7468, "AMD8111", enable_flash_amd8111},
+ /* this fallthrough looks broken. */
+ {0x10de, 0x0050, "NVIDIA CK804", enable_flash_ck804}, /* LPC */
+ {0x10de, 0x0051, "NVIDIA CK804", enable_flash_ck804}, /* Pro */
+ {0x10de, 0x00d3, "NVIDIA CK804", enable_flash_ck804}, /* Slave, should not be here, to fix known bug for A01. */
+
+ {0x10de, 0x0260, "NVidia MCP51", enable_flash_ck804},
+ {0x10de, 0x0261, "NVidia MCP51", enable_flash_ck804},
+ {0x10de, 0x0262, "NVidia MCP51", enable_flash_ck804},
+ {0x10de, 0x0263, "NVidia MCP51", enable_flash_ck804},
+
+ {0x10de, 0x0360, "NVIDIA MCP55", enable_flash_mcp55}, /* Gigabyte m57sli-s4 */
+ {0x10de, 0x0361, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
+ {0x10de, 0x0362, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
+ {0x10de, 0x0363, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
+ {0x10de, 0x0364, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
+ {0x10de, 0x0365, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
+ {0x10de, 0x0366, "NVIDIA MCP55", enable_flash_mcp55}, /* LPC */
+ {0x10de, 0x0367, "NVIDIA MCP55", enable_flash_mcp55}, /* Pro */
+
+ {0x1002, 0x4377, "ATI SB400", enable_flash_sb400}, /* ATI Technologies Inc IXP SB400 PCI-ISA Bridge (rev 80) */
+};
+
+/*
+ *
+ */
+int
+chipset_flash_enable(void)
+{
+ struct pci_dev *dev = 0;
+ int ret = -2; /* nothing! */
+ int i;
+
+ /* now let's try to find the chipset we have ... */
+ for (i = 0; i < sizeof(enables) / sizeof(enables[0]); i++) {
+ dev = pci_dev_find(enables[i].vendor, enables[i].device);
+ if (dev)
+ break;
+ }
+
+ if (dev) {
+ printf("Found chipset \"%s\": Enabling flash write... ",
+ enables[i].name);
+
+ ret = enables[i].doit(dev, enables[i].name);
+ if (ret)
+ printf("Failed!\n");
+ else
+ printf("OK.\n");
+ }
+
+ return ret;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 17:55:29 +0000