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-rw-r--r--arch/powerpc/kernel/head_32.S13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index fdd34dbd8797..6359e364fe66 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -125,6 +125,19 @@ __start:
bl prom_init
trap
+/*
+ * Check for BootX signature when supporting PowerMac and branch to
+ * appropriate trampoline if it's present
+ */
+#ifdef CONFIG_PPC_PMAC
+1: lis r31,0x426f
+ ori r31,r31,0x6f58
+ cmpw 0,r3,r31
+ bne 1f
+ bl bootx_init
+ trap
+#endif /* CONFIG_PPC_PMAC */
+
1: mr r31,r3 /* save parameters */
mr r30,r4
li r24,0 /* cpu # */

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