[openwrt/openwrt] uboot-envtools: add support for the realtek target

[LEDE Commits]

blogic pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/f3926d233dba451831f4dd587fb3d01cc126df5b

commit f3926d233dba451831f4dd587fb3d01cc126df5b
Author: John Crispin <john at phrozen.org>
AuthorDate: Sat Nov 28 11:46:47 2020 +0100

    uboot-envtools: add support for the realtek target
    
    On most boards the MAC is located inside the u-boot-env.
    
    Signed-off-by: John Crispin <john at phrozen.org>
---
 package/boot/uboot-envtools/files/realtek | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/package/boot/uboot-envtools/files/realtek b/package/boot/uboot-envtools/files/realtek
new file mode 100644
index 0000000000..cce0628ffc
--- /dev/null
+++ b/package/boot/uboot-envtools/files/realtek
@@ -0,0 +1,29 @@
+[ -e /etc/config/ubootenv ] && exit 0
+
+touch /etc/config/ubootenv
+
+. /lib/uboot-envtools.sh
+. /lib/functions.sh
+
+board=$(board_name)
+
+case "$board" in
+d-link,dgs-1210-16|\
+d-link,dgs-1210-28|\
+d-link,dgs-1210-10p|\
+zyxel,gs1900-10hp)
+	idx="$(find_mtd_index u-boot-env)"
+	[ -n "$idx" ] && \
+		ubootenv_add_uci_config "/dev/mtd$idx" "0x0" "0x400" "0x10000"
+	;;
+*)
+	idx="$(find_mtd_index u-boot-env)"
+	[ -n "$idx" ] && \
+		ubootenv_add_uci_config "/dev/mtd$idx" "0x0" "0x10000" "0x10000"
+	;;
+esac
+
+config_load ubootenv
+config_foreach ubootenv_add_app_config ubootenv
+
+exit 0