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Commit ff472a11 authored by Florian Fainelli's avatar Florian Fainelli Committed by Ingo Molnar
Browse files

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: default avatarFlorian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 5e3a77e9

arch/x86/kernel/reboot_fixups_32.c

+14 −0
Original line number Diff line number Diff line
@@ -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 },

};



/*