Commit | Line | Data |
---|---|---|
a2f7c354 JK |
1 | /* |
2 | * linux/arch/i386/kernel/reboot_fixups.c | |
3 | * | |
4 | * This is a good place to put board specific reboot fixups. | |
5 | * | |
6 | * List of supported fixups: | |
7 | * geode-gx1/cs5530a - Jaya Kumar <jayalk@intworks.biz> | |
8 | * | |
9 | */ | |
10 | ||
11 | #include <asm/delay.h> | |
12 | #include <linux/pci.h> | |
13 | ||
14 | static void cs5530a_warm_reset(struct pci_dev *dev) | |
15 | { | |
16 | /* writing 1 to the reset control register, 0x44 causes the | |
17 | cs5530a to perform a system warm reset */ | |
18 | pci_write_config_byte(dev, 0x44, 0x1); | |
19 | udelay(50); /* shouldn't get here but be safe and spin-a-while */ | |
20 | return; | |
21 | } | |
22 | ||
23 | struct device_fixup { | |
24 | unsigned int vendor; | |
25 | unsigned int device; | |
26 | void (*reboot_fixup)(struct pci_dev *); | |
27 | }; | |
28 | ||
29 | static struct device_fixup fixups_table[] = { | |
30 | { PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY, cs5530a_warm_reset }, | |
31 | }; | |
32 | ||
33 | /* | |
34 | * we see if any fixup is available for our current hardware. if there | |
35 | * is a fixup, we call it and we expect to never return from it. if we | |
36 | * do return, we keep looking and then eventually fall back to the | |
37 | * standard mach_reboot on return. | |
38 | */ | |
39 | void mach_reboot_fixups(void) | |
40 | { | |
41 | struct device_fixup *cur; | |
42 | struct pci_dev *dev; | |
43 | int i; | |
44 | ||
45 | for (i=0; i < (sizeof(fixups_table)/sizeof(fixups_table[0])); i++) { | |
46 | cur = &(fixups_table[i]); | |
874ec33f | 47 | dev = pci_get_device(cur->vendor, cur->device, NULL); |
a2f7c354 JK |
48 | if (!dev) |
49 | continue; | |
50 | ||
51 | cur->reboot_fixup(dev); | |
52 | } | |
53 | ||
54 | printk(KERN_WARNING "No reboot fixup found for your hardware\n"); | |
55 | } | |
56 |