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
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