# Patch author: Benjamin Herrenschmidt <benh@kernel.crashing.org>
# Description: Fix oldworld initrd loading problems.
#  It looks like older OF "setprop" is bogus and isn't actually copying the
#  data but just taking a pointer. The LongTrail workaround also has that
#  problem as "property" will not copy the data. This fixes the workaround
#  and applies it to Apple OF 1.0.5.
# Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
# Closes:
#  375035: Kernel 2.6.16 attempts to access root device before running initramfs init
#  366620: initramfs-tools: 2.6.16-1-powerpc fails to mount rootfs, 2.6.15-1-powerpc works
#

Index: linux-tika/arch/powerpc/kernel/prom_init.c
===================================================================
--- linux-tika.orig/arch/powerpc/kernel/prom_init.c	2006-09-02 09:53:00.000000000 +1000
+++ linux-tika/arch/powerpc/kernel/prom_init.c	2006-09-18 20:55:26.000000000 +1000
@@ -102,7 +102,7 @@
 #endif
 
 #define OF_WA_CLAIM	1	/* do phys/virt claim separately, then map */
-#define OF_WA_LONGTRAIL	2	/* work around longtrail bugs */
+#define OF_WA_SETPROP	2	/* work around setprop bugs */
 
 #define PROM_BUG() do {						\
         prom_printf("kernel BUG at %s line 0x%x!\n",		\
@@ -472,7 +472,7 @@
 {
 	char cmd[256], *p;
 
-	if (!(OF_WORKAROUNDS & OF_WA_LONGTRAIL))
+	if (!(OF_WORKAROUNDS & OF_WA_SETPROP))
 		return call_prom("setprop", 4, 1, node, ADDR(pname),
 				 (u32)(unsigned long) value, (u32) valuelen);
 
@@ -482,6 +482,7 @@
 	add_string(&p, nodename);
 	add_string(&p, tohex((u32)(unsigned long) value));
 	add_string(&p, tohex(valuelen));
+	add_string(&p, "encode-bytes");
 	add_string(&p, tohex(ADDR(pname)));
 	add_string(&p, tohex(strlen(RELOC(pname))));
 	add_string(&p, "property");
@@ -1466,9 +1467,9 @@
 	version[sizeof(version) - 1] = 0;
 	/* XXX might need to add other versions here */
 	if (strcmp(version, "Open Firmware, 1.0.5") == 0)
-		of_workarounds = OF_WA_CLAIM;
+		of_workarounds = OF_WA_CLAIM | OF_WA_SETPROP;
 	else if (strncmp(version, "FirmWorks,3.", 12) == 0) {
-		of_workarounds = OF_WA_CLAIM | OF_WA_LONGTRAIL;
+		of_workarounds = OF_WA_CLAIM | OF_WA_SETPROP;
 		call_prom("interpret", 1, 1, "dev /memory 0 to allow-reclaim");
 	} else
 		return;