[PATCH, RFC]

[Eddie Dawydiuk]

Hello,

The patch below resolves the following issues. The build system for the 
AMCC Yosemite eval board is not including the proper fixups(e.g. RAM 
initialization, timer initialization). In addition the wrapper script 
was not using the fixed-head.S source(e.g. add branch instruction so one 
can jump into the image at offset 0).

Any feedback appreciated..

diff -urN linux-2.6.28.orig/arch/powerpc/boot/Makefile 
linux-2.6.28/arch/powerpc/boot/Makefile
--- linux-2.6.28.orig/arch/powerpc/boot/Makefile        2008-12-24 
16:26:37.000000000 -0700
+++ linux-2.6.28/arch/powerpc/boot/Makefile     2009-03-05 
17:35:53.000000000 -0700
@@ -70,7 +70,7 @@
                 cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c \
                 cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c 
simpleboot.c \
                 virtex405-head.S virtex.c redboot-83xx.c 
cuboot-sam440ep.c \
-               cuboot-acadia.c
+               cuboot-acadia.c simpleboot-yosemite.c
  src-boot := $(src-wlib) $(src-plat) empty.c

  src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -224,7 +224,7 @@
  image-$(CONFIG_TAISHAN)                        += cuImage.taishan
  image-$(CONFIG_KATMAI)                 += cuImage.katmai
  image-$(CONFIG_WARP)                   += cuImage.warp
-image-$(CONFIG_YOSEMITE)               += cuImage.yosemite
+image-$(CONFIG_YOSEMITE)               += cuImage.yosemite 
simpleImage.yosemite

  # Board ports in arch/powerpc/platform/8xx/Kconfig
  image-$(CONFIG_MPC86XADS)              += cuImage.mpc866ads

diff -urN linux-2.6.28.orig/arch/powerpc/boot/wrapper 
linux-2.6.28/arch/powerpc/boot/wrapper
--- linux-2.6.28.orig/arch/powerpc/boot/wrapper 2008-12-24 
16:26:37.000000000 -0700
+++ linux-2.6.28/arch/powerpc/boot/wrapper      2009-03-05 
17:36:10.000000000 -0700
@@ -214,8 +214,12 @@
      platformo="$object/simpleboot.o $object/virtex.o"
      binary=y
      ;;
+simpleboot-yosemite)
+    platformo="$object/fixed-head.o $object/simpleboot.o 
$object/simpleboot-yosemite.o"
+    binary=y
+    ;;
  simpleboot-*)
-    platformo="$object/simpleboot.o"
+    platformo="$object/fixed-head.o $object/simpleboot.o"
      binary=y
      ;;
  asp834x-redboot)

diff -urN linux-2.6.28.orig/arch/powerpc/boot/simpleboot-yosemite.c 
linux-2.6.28/arch/powerpc/boot/simpleboot-yosemite.c
--- linux-2.6.28.orig/arch/powerpc/boot/simpleboot-yosemite.c 
1969-12-31 17:00:00.000000000 -0700
+++ linux-2.6.28/arch/powerpc/boot/simpleboot-yosemite.c 
2009-03-06 10:48:19.000000000 -0700
@@ -0,0 +1,27 @@
+#include "ops.h"
+#include "stdio.h"
+#include "4xx.h"
+#include "44x.h"
+
+#define TARGET_4xx
+#define TARGET_44x
+#include "ppcboot.h"
+
+static unsigned char eth0adr[] = { 0x0, 0xd0, 0x69, 0x41, 0x12, 0x34 };
+static unsigned char eth1adr[] = { 0x0, 0xd0, 0x69, 0x41, 0x12, 0x56 };
+
+static void yosemite_fixups(void)
+{
+       unsigned long sysclk = 50000000;
+
+       ibm440ep_fixup_clocks(sysclk, 11059200, 400000000);
+       ibm4xx_sdram_fixup_memsize();
+       dt_fixup_mac_address_by_alias("ethernet0", eth0adr);
+       dt_fixup_mac_address_by_alias("ethernet1", eth1adr);
+}
+
+void platform_specific_init(void)
+{
+       platform_ops.fixups = yosemite_fixups;
+       platform_ops.exit = ibm44x_dbcr_reset;
+}

-- 
Best Regards,
________________________________________________________________
  Eddie Dawydiuk, Technologic Systems | voice:  (480) 837-5200
  16525 East Laser Drive 	     | fax:    (480) 837-5300
  Fountain Hills, AZ 85268            | web: www.embeddedARM.com