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>
diff --git a/arch/x86/kernel/reboot_fixups_32.c b/arch/x86/kernel/reboot_fixups_32.c
index f452726..dec0b5e 100644
--- a/arch/x86/kernel/reboot_fixups_32.c
+++ b/arch/x86/kernel/reboot_fixups_32.c
@@ -30,6 +30,19 @@
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 @@
{ 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 },
};
/*
