mpc85xx: disable kernel uImage generation

The previous workaround for the unsupported mkimage xz compression
leads to the TP-Link TL-WDR4900s simpleImage bootwrapper being gzip
compressed, which does not fit the kernel partition.

Removing the uImage gerneration works around this problem.

Signed-off-by: David Bauer <mail@david-bauer.net>

target/linux/mpc85xx/patches-5.4/900-powerpc-bootwrapper-disable-uImage-generation.patch

@@ -0,0 +1,42 @@
+From d43ab14605510d9d2bd257a8cd70f24ada4621b0 Mon Sep 17 00:00:00 2001
+From: David Bauer <mail@david-bauer.net>
+Date: Sat, 29 Feb 2020 14:27:04 +0100
+Subject: [PATCH] powerpc: bootwrapper: disable uImage generation
+
+Due to CONFIG_KERNEL_XZ symbol, the bootwrapper code tries to
+instruct the mkimage to use the xz compression, which isn't
+supported. This disables the uImage generation, as OpenWrt
+generates individual uImages for each board using it's own
+toolchain.
+
+Signed-off-by: David Bauer <mail@david-bauer.net>
+---
+ arch/powerpc/boot/Makefile | 9 ---------
+ 1 file changed, 9 deletions(-)
+
+--- a/arch/powerpc/boot/Makefile
++++ b/arch/powerpc/boot/Makefile
+@@ -268,7 +268,6 @@ image-$(CONFIG_PPC_CHRP)		+= zImage.chrp
+ image-$(CONFIG_PPC_EFIKA)		+= zImage.chrp
+ image-$(CONFIG_PPC_PMAC)		+= zImage.pmac
+ image-$(CONFIG_PPC_HOLLY)		+= dtbImage.holly
+-image-$(CONFIG_DEFAULT_UIMAGE)		+= uImage
+ image-$(CONFIG_EPAPR_BOOT)		+= zImage.epapr
+ 
+ #
+@@ -397,15 +396,6 @@ $(obj)/dtbImage.%: vmlinux $(wrapperbits
+ $(obj)/vmlinux.strip: vmlinux
+ 	$(STRIP) -s -R .comment $< -o $@
+ 
+-$(obj)/uImage: vmlinux $(wrapperbits) FORCE
+-	$(call if_changed,wrap,uboot)
+-
+-$(obj)/uImage.initrd.%: vmlinux $(obj)/dts/%.dtb $(wrapperbits) FORCE
+-	$(call if_changed,wrap,uboot-$*,,$(obj)/dts/$*.dtb,$(obj)/ramdisk.image.gz)
+-
+-$(obj)/uImage.%: vmlinux $(obj)/dts/%.dtb $(wrapperbits) FORCE
+-	$(call if_changed,wrap,uboot-$*,,$(obj)/dts/$*.dtb)
+-
+ $(obj)/cuImage.initrd.%: vmlinux $(obj)/dts/%.dtb $(wrapperbits) FORCE
+ 	$(call if_changed,wrap,cuboot-$*,,$(obj)/dts/$*.dtb,$(obj)/ramdisk.image.gz)
+ 

target/linux/mpc85xx/patches-5.4/900-powerpc-bootwrapper-force-gzip-as-mkimage-s-compress.patch

@@ -1,31 +0,0 @@
-From c9395ad54e2cabb87d408becc37566f3d8248933 Mon Sep 17 00:00:00 2001
-From: Christian Lamparter <chunkeey@gmail.com>
-Date: Sun, 1 Dec 2019 02:08:23 +0100
-Subject: [PATCH] powerpc: bootwrapper: force gzip as mkimage's compression
- method
-
-Due to CONFIG_KERNEL_XZ symbol, the bootwrapper code tries to
-instruct the mkimage to use the xz compression, which isn't
-supported. This patch forces the gzip compression, which is
-supported and doesn't matter because the generated uImage for
-the apm821xx target gets ignored as the OpenWrt toolchain will
-do separate U-Boot kernel images for each device individually.
-
-Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
-[copied to mpc85xx]
-Signed-off-by: David Bauer <mail@david-bauer.net>
----
- arch/powerpc/boot/Makefile | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
---- a/arch/powerpc/boot/Makefile
-+++ b/arch/powerpc/boot/Makefile
-@@ -254,7 +254,7 @@ compressor-$(CONFIG_KERNEL_LZO) := lzo
- 
- # args (to if_changed): 1 = (this rule), 2 = platform, 3 = dts 4=dtb 5=initrd
- quiet_cmd_wrap	= WRAP    $@
--      cmd_wrap	=$(CONFIG_SHELL) $(wrapper) -Z $(compressor-y) -c -o $@ -p $2 \
-+      cmd_wrap	=$(CONFIG_SHELL) $(wrapper) -Z gzip -c -o $@ -p $2 \
- 		$(CROSSWRAP) $(if $3, -s $3)$(if $4, -d $4)$(if $5, -i $5) \
- 		vmlinux
-