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author | Ollie Lho <ollie@sis.com.tw> | 2004-03-17 22:22:08 +0000 |
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committer | Ollie Lho <ollie@sis.com.tw> | 2004-03-17 22:22:08 +0000 |
commit | cbbf1259817896cd6339e7517404ba64aa85ed8d (patch) | |
tree | 96c21cf62ad8fd400edd11e6e68cb75fdbd6d6bf /flash_enable.c | |
parent | 3770a1132ee0e43836eb907229277506af05ebc8 (diff) | |
download | flashrom-cbbf1259817896cd6339e7517404ba64aa85ed8d.tar.gz flashrom-cbbf1259817896cd6339e7517404ba64aa85ed8d.tar.bz2 flashrom-cbbf1259817896cd6339e7517404ba64aa85ed8d.zip |
Move utility functions into new source files
Corresponding to flashrom svn r6 and coreboot v2 svn r1428.
Diffstat (limited to 'flash_enable.c')
-rw-r--r-- | flash_enable.c | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/flash_enable.c b/flash_enable.c new file mode 100644 index 00000000..8a9bf042 --- /dev/null +++ b/flash_enable.c @@ -0,0 +1,278 @@ +#include <sys/io.h> +#include <stdio.h> +#include <pci/pci.h> +#include <stdlib.h> + +static int enable_flash_sis630 (struct pci_dev *dev, char *name) +{ + char b; + + /* get io privilege access PCI configuration space */ + if (iopl(3) != 0) { + perror("Can not set io priviliage"); + exit(1); + } + + /* 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; +} + +static int enable_flash_e7500(struct pci_dev *dev, char *name) +{ + /* register 4e.b gets or'ed with one */ + unsigned char 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. + */ + + old = pci_read_byte(dev, 0x4e); + + new = old | 1; + + if (new == old) + return 0; + + pci_write_byte(dev, 0x4e, new); + + if (pci_read_byte(dev, 0x4e) != new) { + printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", + 0x4e, new, name); + return -1; + } + return 0; +} + +static int enable_flash_vt8235(struct pci_dev *dev, char *name) +{ + unsigned char old, new, val; + unsigned int base; + int ok; + + /* get io privilege access PCI configuration space */ + if (iopl(3) != 0) { + perror("Can not set io priviliage"); + exit(1); + } + + old = pci_read_byte(dev, 0x40); + + new = old | 0x10; + + if (new == old) + return 0; + + ok = pci_write_byte(dev, 0x40, new); + if (ok != 0) { + printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", + old, new, name); + } + + /* enable GPIO15 which is connected to write protect. */ + base = ((pci_read_byte(dev, 0x88) & 0x80) | pci_read_byte(dev, 0x89) << 8); + val = inb(base + 0x4d); + val |= 0x80; + outb(val, base + 0x4d); + + if (ok != 0) { + return -1; + } else { + return 0; + } +} + +static int enable_flash_vt8231(struct pci_dev *dev, char *name) +{ + unsigned char val; + + val = pci_read_byte(dev, 0x40); + val |= 0x10; + pci_write_byte(dev, 0x40, val); + + if (pci_read_byte(dev, 0x40) != val) { + printf("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n", + 0x40, val, name); + return -1; + } + return 0; +} + +static int enable_flash_cs5530(struct pci_dev *dev, char *name) +{ + unsigned char 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_sc1100(struct pci_dev *dev, char *name) +{ + unsigned char 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) +{ + unsigned char 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 */ + unsigned char 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, 0x43); + new = old | 0x80; + 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; +} + +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, 0x2480, "E7500", enable_flash_e7500}, + {0x1106, 0x8231, "VT8231", enable_flash_vt8231}, + {0x1106, 0x3177, "VT8235", enable_flash_vt8235}, + {0x1078, 0x0100, "CS5530", enable_flash_cs5530}, + {0x100b, 0x0510, "SC1100", enable_flash_sc1100}, + {0x1039, 0x0008, "SIS5595", enable_flash_sis5595}, + {0x1022, 0x7468, "AMD8111", enable_flash_amd8111}, +}; + +int enable_flash_write() +{ + int i; + struct pci_access *pacc; + struct pci_dev *dev = 0; + FLASH_ENABLE *enable = 0; + + pacc = pci_alloc(); /* Get the pci_access structure */ + /* Set all options you want -- here we stick with the defaults */ + pci_init(pacc); /* Initialize the PCI library */ + pci_scan_bus(pacc); /* We want to get the list of devices */ + + /* now let's try to find the chipset we have ... */ + for (i = 0; i < sizeof(enables)/sizeof(enables[0]) && (! dev); i++) { + struct pci_filter f; + struct pci_dev *z; + /* the first param is unused. */ + pci_filter_init((struct pci_access *) 0, &f); + f.vendor = enables[i].vendor; + f.device = enables[i].device; + for (z=pacc->devices; z; z=z->next) + if (pci_filter_match(&f, z)) { + enable = &enables[i]; + dev = z; + } + } + + /* now do the deed. */ + if (enable) { + printf("Enabling flash write on %s...", enable->name); + if (enable->doit(dev, enable->name) == 0) + printf("OK\n"); + } + return 0; +} |