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flashrom: Fix wrong VT8235 flash enable failed warning. 

* Fix harmless but worrying warning where the return value of
  pci_write_byte is misinterpreted.
* Hash together VT8231 and VT8235 code into VT823x. VT8231 is the better
  implementation, but lacked the write protect disable code that's
  apparently needed for VT8235.

Signed-off-by: Luc Verhaegen <libv@skynet.be>
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2568 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Luc Verhaegen 2007-03-02 22:16:38 +00:00 committed by Uwe Hermann
parent a81bb03b79
commit 47ce57acd7
1 changed files with 37 additions and 40 deletions
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75
util/flashrom/flash_enable.c
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@ -158,52 +158,49 @@ static int enable_flash_ich_dc(struct pci_dev *dev, char *name)
return enable_flash_ich(dev, name, 0xdc);
}
static int enable_flash_vt8235(struct pci_dev *dev, char *name)
{
uint8_t old, new, val;
unsigned int base;
int ok;
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)
static int enable_flash_vt823x(struct pci_dev *dev, char *name)
{
uint8_t val;
int ret = 0;
/* 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("tried to set 0x%x to 0x%x on %s failed (WARNING ONLY)\n",
0x40, val, name);
printf("Warning: Failed to enable ROM Write on %s\n", name);
ret = -1;
}
if (dev->device_id == 0x3177) { /* VT8235 */
if (!iopl(3)) { /* enable full IO access */
unsigned int base;
/* GPIO12-15 -> output */
val = pci_read_byte(dev, 0xE4);
val |= 0x38;
pci_write_byte(dev, 0xE4, val);
/* Get Power Management IO address. */
base = pci_read_word(dev, 0x88) & 0xFF80;
/* enable GPIO15 which is connected to write protect. */
val = inb(base + 0x4d);
val |= 0xFF;
outb(val, base + 0x4d);
val = inb(base + 0x4E);
val |= 0x0F;
outb(val, base + 0x4E);
} else {
printf("Warning; Failed to disable Write Protect"
" on %s (iopl failed)\n", name);
return -1;
}
return 0;
}
return ret;
}
static int enable_flash_cs5530(struct pci_dev *dev, char *name)
@ -445,9 +442,9 @@ static FLASH_ENABLE enables[] = {
{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_vt8231},
{0x1106, 0x3177, "VT8235", enable_flash_vt8235},
{0x1106, 0x3227, "VT8237", enable_flash_vt8231},
{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},