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[MTD] ESB2 check for closed ROM window 

Add checking for closed ROM window on Intel ESB2 Southbridge.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
Cyrill Gorcunov 2007-03-06 02:39:45 -08:00 committed by David Woodhouse
parent 180bfb31fe
commit dc164bbb4b
1 changed files with 8 additions and 3 deletions
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11
drivers/mtd/maps/esb2rom.c
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@ -30,7 +30,7 @@
#define ROM_PROBE_STEP_SIZE (64*1024) /* 64KiB */ #define ROM_PROBE_STEP_SIZE (64*1024) /* 64KiB */
#define BIOS_CNTL 0xDC #define BIOS_CNTL 0xDC
#define BIOS_LOCK_ENABLE 0x02 #define BIOS_LOCK_ENABLE 0x02
#define BIOS_WRITE_ENABLE 0x01 #define BIOS_WRITE_ENABLE 0x01
@ -145,7 +145,7 @@ static void esb2rom_cleanup(struct esb2rom_window *window)
} }
static int __devinit esb2rom_init_one(struct pci_dev *pdev, static int __devinit esb2rom_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent) const struct pci_device_id *ent)
{ {
static char *rom_probe_types[] = { "cfi_probe", "jedec_probe", NULL }; static char *rom_probe_types[] = { "cfi_probe", "jedec_probe", NULL };
struct esb2rom_window *window = &esb2rom_window; struct esb2rom_window *window = &esb2rom_window;
@ -185,7 +185,7 @@ static int __devinit esb2rom_init_one(struct pci_dev *pdev,
/* Find a region continuous to the end of the ROM window */ /* Find a region continuous to the end of the ROM window */
window->phys = 0; window->phys = 0;
pci_read_config_word(pdev, FWH_DEC_EN1, &word); pci_read_config_word(pdev, FWH_DEC_EN1, &word);
printk(KERN_DEBUG "pci_read_config_byte : %x\n", word); printk(KERN_DEBUG "pci_read_config_word : %x\n", word);
if ((word & FWH_8MiB) == FWH_8MiB) if ((word & FWH_8MiB) == FWH_8MiB)
window->phys = 0xff400000; window->phys = 0xff400000;
@ -212,6 +212,11 @@ static int __devinit esb2rom_init_one(struct pci_dev *pdev,
else if ((word & FWH_0_5MiB) == FWH_0_5MiB) else if ((word & FWH_0_5MiB) == FWH_0_5MiB)
window->phys = 0xfff80000; window->phys = 0xfff80000;
if (window->phys == 0) {
printk(KERN_ERR MOD_NAME ": Rom window is closed\n");
goto out;
}
/* reserved 0x0020 and 0x0010 */ /* reserved 0x0020 and 0x0010 */
window->phys -= 0x400000UL; window->phys -= 0x400000UL;
window->size = (0xffffffffUL - window->phys) + 1UL; window->size = (0xffffffffUL - window->phys) + 1UL;