e48c4729d2
Printk doesn't have any value Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
/*
|
|
* linux/arch/i386/kernel/reboot_fixups.c
|
|
*
|
|
* This is a good place to put board specific reboot fixups.
|
|
*
|
|
* List of supported fixups:
|
|
* geode-gx1/cs5530a - Jaya Kumar <jayalk@intworks.biz>
|
|
*
|
|
*/
|
|
|
|
#include <asm/delay.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/reboot_fixups.h>
|
|
|
|
static void cs5530a_warm_reset(struct pci_dev *dev)
|
|
{
|
|
/* writing 1 to the reset control register, 0x44 causes the
|
|
cs5530a to perform a system warm reset */
|
|
pci_write_config_byte(dev, 0x44, 0x1);
|
|
udelay(50); /* shouldn't get here but be safe and spin-a-while */
|
|
return;
|
|
}
|
|
|
|
struct device_fixup {
|
|
unsigned int vendor;
|
|
unsigned int device;
|
|
void (*reboot_fixup)(struct pci_dev *);
|
|
};
|
|
|
|
static struct device_fixup fixups_table[] = {
|
|
{ PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY, cs5530a_warm_reset },
|
|
};
|
|
|
|
/*
|
|
* we see if any fixup is available for our current hardware. if there
|
|
* is a fixup, we call it and we expect to never return from it. if we
|
|
* do return, we keep looking and then eventually fall back to the
|
|
* standard mach_reboot on return.
|
|
*/
|
|
void mach_reboot_fixups(void)
|
|
{
|
|
struct device_fixup *cur;
|
|
struct pci_dev *dev;
|
|
int i;
|
|
|
|
for (i=0; i < ARRAY_SIZE(fixups_table); i++) {
|
|
cur = &(fixups_table[i]);
|
|
dev = pci_get_device(cur->vendor, cur->device, NULL);
|
|
if (!dev)
|
|
continue;
|
|
|
|
cur->reboot_fixup(dev);
|
|
}
|
|
}
|
|
|