u-boot: change ramdisk load address to support large initrd

Also fix buildroot compile error when running as root, and allow using a
local mirror.
Signed-off-by: Josua Mayer <josua@solid-run.com>

patches/u-boot-LSDK-21.08/0037-lx2160a_common-change-ramdisk_addr_r-to-after-kernel.patch

+From 030b8666f0ed5a4aa9c56487b9b3cebfa83328e6 Mon Sep 17 00:00:00 2001
+From: Josua Mayer <josua@solid-run.com>
+Date: Thu, 28 Apr 2022 13:44:12 +0300
+Subject: [PATCH] lx2160a_common: change ramdisk_addr_r to after kernel_addr_r
+
+To allow for larger ramdisks, change the load address from
+0x09000000 to 0x85100000 - which is exactly 64MB after kernel_addr_r.
+
+This solves errors when loading a large ramdisk, such as:
+Found /extlinux/extlinux.conf
+Retrieving file: /extlinux/extlinux.conf
+144 bytes read in 3 ms (46.9 KiB/s)
+1:      Debian-Installer
+Retrieving file: /initrd.gz
+** Reading file would overwrite reserved memory **
+
+Signed-off-by: Josua Mayer <josua@solid-run.com>
+---
+ include/configs/lx2160a_common.h | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/include/configs/lx2160a_common.h b/include/configs/lx2160a_common.h
+index 2f3b12a575..dc428c6f49 100644
+--- a/include/configs/lx2160a_common.h
++++ b/include/configs/lx2160a_common.h
+@@ -240,8 +240,8 @@ int select_i2c_ch_pca9547_sec(unsigned char ch);
+ 
+ #define EXTRA_ENV_SETTINGS			\
+ 	"hwconfig=fsl_ddr:bank_intlv=auto\0"	\
+-	"ramdisk_addr=0x9000000\0"		\
+-	"ramdisk_addr_r=0x9000000\0"		\
++	"ramdisk_addr=0x85100000\0"		\
++	"ramdisk_addr_r=0x85100000\0"		\
+ 	"ramdisk_size=0x2000000\0"		\
+ 	"fdt_high=0xa0000000\0"			\
+ 	"initrd_high=0xffffffffffffffff\0"	\
+-- 
+2.34.1
+

runme.sh

@@ -20,6 +20,7 @@ BUILDROOT_VERSION=2020.02.1
 : ${SECURE:=false}
 : ${ATF_DEBUG:=false}
 : ${DISTRO:=ubuntu}
+: ${BR2_PRIMARY_SITE:=} # custom buildroot mirror
 
 if [ "x$SHALLOW" == "xtrue" ]; then
 	SHALLOW_FLAG="--depth 1"
@@ -215,7 +216,11 @@ if [[ ! -f $ROOTDIR/build/ubuntu-core.ext4 ]] && [ "x$DISTRO" == "xubuntu" ]; th
 		git clone $SHALLOW_FLAG https://github.com/buildroot/buildroot -b $BUILDROOT_VERSION
 	fi
 	cd buildroot
+	if [ $UID -eq 0 ]; then
+		export FORCE_UNSAFE_CONFIGURE=1
+	fi
 	cp $ROOTDIR/configs/buildroot/lx2160acex7_defconfig configs/
+	printf 'BR2_PRIMARY_SITE="%s"\n' "${BR2_PRIMARY_SITE}" >> configs/lx2160acex7_defconfig
 	make lx2160acex7_defconfig
 	mkdir -p overlay/etc/init.d/
 	cat > overlay/etc/init.d/S99bootstrap-ubuntu.sh << EOF
@@ -267,7 +272,11 @@ if [[ ! -f $ROOTDIR/build/debian-bullseye.ext4 ]] && [ "x$DISTRO" == "xdebian" ]
 		git clone $SHALLOW_FLAG https://github.com/buildroot/buildroot -b $BUILDROOT_VERSION
 	fi
 	cd buildroot
+	if [ $UID -eq 0 ]; then
+		export FORCE_UNSAFE_CONFIGURE=1
+	fi
 	cp $ROOTDIR/configs/buildroot/lx2160acex7_defconfig configs/
+	printf 'BR2_PRIMARY_SITE="%s"\n' "${BR2_PRIMARY_SITE}" >> configs/lx2160acex7_defconfig
 	make lx2160acex7_defconfig
 	mkdir -p overlay/etc/init.d/
 	cat > overlay/etc/init.d/S99bootstrap-debian.sh << EOF