2 * linux/arch/i386/kernel/reboot_fixups.c
4 * This is a good place to put board specific reboot fixups.
6 * List of supported fixups:
7 * geode-gx1/cs5530a - Jaya Kumar <jayalk@intworks.biz>
11 #include <asm/delay.h>
12 #include <linux/pci.h>
13 #include <linux/reboot_fixups.h>
15 static void cs5530a_warm_reset(struct pci_dev *dev)
17 /* writing 1 to the reset control register, 0x44 causes the
18 cs5530a to perform a system warm reset */
19 pci_write_config_byte(dev, 0x44, 0x1);
20 udelay(50); /* shouldn't get here but be safe and spin-a-while */
27 void (*reboot_fixup)(struct pci_dev *);
30 static struct device_fixup fixups_table[] = {
31 { PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY, cs5530a_warm_reset },
35 * we see if any fixup is available for our current hardware. if there
36 * is a fixup, we call it and we expect to never return from it. if we
37 * do return, we keep looking and then eventually fall back to the
38 * standard mach_reboot on return.
40 void mach_reboot_fixups(void)
42 struct device_fixup *cur;
46 for (i=0; i < ARRAY_SIZE(fixups_table); i++) {
47 cur = &(fixups_table[i]);
48 dev = pci_get_device(cur->vendor, cur->device, NULL);
52 cur->reboot_fixup(dev);