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x86: add the RDC machine specific reboot fixup 

The RDC R-321x SoC needs a reboot fixup which
uses its internal hardware watchdog set to
reset the CPU on next tick.

Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Florian Fainelli 2008-01-30 13:33:36 +01:00 committed by Ingo Molnar
parent 5e3a77e9a9
commit ff472a114c
1 changed files with 14 additions and 0 deletions
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14
arch/x86/kernel/reboot_fixups_32.c
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@ -30,6 +30,19 @@ static void cs5536_warm_reset(struct pci_dev *dev)
udelay(50); /* shouldn't get here but be safe and spin a while */
}
static void rdc321x_reset(struct pci_dev *dev)
{
unsigned i;
/* Voluntary reset the watchdog timer */
outl(0x80003840, 0xCF8);
/* Generate a CPU reset on next tick */
i = inl(0xCFC);
/* Use the minimum timer resolution */
i |= 0x1600;
outl(i, 0xCFC);
outb(1, 0x92);
}
struct device_fixup {
unsigned int vendor;
unsigned int device;
@ -40,6 +53,7 @@ static struct device_fixup fixups_table[] = {
{ PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY, cs5530a_warm_reset },
{ PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, cs5536_warm_reset },
{ PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_SC1100_BRIDGE, cs5530a_warm_reset },
{ PCI_VENDOR_ID_RDC, PCI_DEVICE_ID_RDC_R6030, rdc321x_reset },
};
/*