From dba9b54731c000b26334bd31a7dbd0fa2dbe80aa Mon Sep 17 00:00:00 2001
From: Sergii Dmytruk <sergii.dmytruk@3mdeb.com>
Date: Thu, 19 Aug 2021 20:19:19 +0300
Subject: arch/ppc64/boot.c: handle non-OPD entry point

Change-Id: I309be370d66a808b355241fcee880883631f38ce
Signed-off-by: Sergii Dmytruk <sergii.dmytruk@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57083
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Krystian Hebel <krystian.hebel@3mdeb.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
---
 src/arch/ppc64/boot.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'src/arch/ppc64/boot.c')

diff --git a/src/arch/ppc64/boot.c b/src/arch/ppc64/boot.c
index dc4bb422a3..bbd0d39e98 100644
--- a/src/arch/ppc64/boot.c
+++ b/src/arch/ppc64/boot.c
@@ -2,9 +2,28 @@
 
 #include <program_loading.h>
 
+#if ENV_PAYLOAD_LOADER
+
+/*
+ * Payload's entry point is an offset to the real entry point, not to OPD
+ * (Official Procedure Descriptor) for entry point.
+ */
+void arch_prog_run(struct prog *prog)
+{
+	asm volatile(
+	    "mtctr %1\n"
+	    "mr 3, %0\n"
+	    "bctr\n"
+	    :: "r"(prog_entry_arg(prog)), "r"(prog_entry(prog)) : "memory");
+}
+
+#else
+
 void arch_prog_run(struct prog *prog)
 {
 	void (*doit)(void *) = prog_entry(prog);
 
 	doit(prog_entry_arg(prog));
 }
+
+#endif
-- 
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