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Diffstat (limited to 'arch/powerpc/kernel/prom_init.c')
-rw-r--r--arch/powerpc/kernel/prom_init.c82
1 files changed, 82 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index d3eff99e938c..88ac964f4858 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -42,6 +42,7 @@
#include <asm/sections.h>
#include <asm/machdep.h>
#include <asm/opal.h>
+#include <asm/asm-prototypes.h>
#include <linux/linux_logo.h>
@@ -2643,6 +2644,86 @@ static void __init fixup_device_tree_efika(void)
#define fixup_device_tree_efika()
#endif
+#ifdef CONFIG_PPC_PASEMI_NEMO
+/*
+ * CFE supplied on Nemo is broken in several ways, biggest
+ * problem is that it reassigns ISA interrupts to unused mpic ints.
+ * Add an interrupt-controller property for the io-bridge to use
+ * and correct the ints so we can attach them to an irq_domain
+ */
+static void __init fixup_device_tree_pasemi(void)
+{
+ u32 interrupts[2], parent, rval, val = 0;
+ char *name, *pci_name;
+ phandle iob, node;
+
+ /* Find the root pci node */
+ name = "/pxp@0,e0000000";
+ iob = call_prom("finddevice", 1, 1, ADDR(name));
+ if (!PHANDLE_VALID(iob))
+ return;
+
+ /* check if interrupt-controller node set yet */
+ if (prom_getproplen(iob, "interrupt-controller") !=PROM_ERROR)
+ return;
+
+ prom_printf("adding interrupt-controller property for SB600...\n");
+
+ prom_setprop(iob, name, "interrupt-controller", &val, 0);
+
+ pci_name = "/pxp@0,e0000000/pci@11";
+ node = call_prom("finddevice", 1, 1, ADDR(pci_name));
+ parent = ADDR(iob);
+
+ for( ; prom_next_node(&node); ) {
+ /* scan each node for one with an interrupt */
+ if (!PHANDLE_VALID(node))
+ continue;
+
+ rval = prom_getproplen(node, "interrupts");
+ if (rval == 0 || rval == PROM_ERROR)
+ continue;
+
+ prom_getprop(node, "interrupts", &interrupts, sizeof(interrupts));
+ if ((interrupts[0] < 212) || (interrupts[0] > 222))
+ continue;
+
+ /* found a node, update both interrupts and interrupt-parent */
+ if ((interrupts[0] >= 212) && (interrupts[0] <= 215))
+ interrupts[0] -= 203;
+ if ((interrupts[0] >= 216) && (interrupts[0] <= 220))
+ interrupts[0] -= 213;
+ if (interrupts[0] == 221)
+ interrupts[0] = 14;
+ if (interrupts[0] == 222)
+ interrupts[0] = 8;
+
+ prom_setprop(node, pci_name, "interrupts", interrupts,
+ sizeof(interrupts));
+ prom_setprop(node, pci_name, "interrupt-parent", &parent,
+ sizeof(parent));
+ }
+
+ /*
+ * The io-bridge has device_type set to 'io-bridge' change it to 'isa'
+ * so that generic isa-bridge code can add the SB600 and its on-board
+ * peripherals.
+ */
+ name = "/pxp@0,e0000000/io-bridge@0";
+ iob = call_prom("finddevice", 1, 1, ADDR(name));
+ if (!PHANDLE_VALID(iob))
+ return;
+
+ /* device_type is already set, just change it. */
+
+ prom_printf("Changing device_type of SB600 node...\n");
+
+ prom_setprop(iob, name, "device_type", "isa", sizeof("isa"));
+}
+#else /* !CONFIG_PPC_PASEMI_NEMO */
+static inline void fixup_device_tree_pasemi(void) { }
+#endif
+
static void __init fixup_device_tree(void)
{
fixup_device_tree_maple();
@@ -2650,6 +2731,7 @@ static void __init fixup_device_tree(void)
fixup_device_tree_chrp();
fixup_device_tree_pmac();
fixup_device_tree_efika();
+ fixup_device_tree_pasemi();
}
static void __init prom_find_boot_cpu(void)