ramips: split base-files into subtargets

While most of the target's contents are split into subtargets, the
base-files are maintained for the target as a whole.

However, OpenWrt already implements a mechanism that will use (and
even prefer) files in the subtargets' directories. This can be
exploited to make several scripts subtarget-specific and thus save
some space.

In certain cases, keeping files in parent (=target) base-files was
more convenient, and thus no splitting was performed for those.

Note that this will increase overall code lines, but reduce code
per subtarget.

base-files ipk size reduction:
master (mt7621)   60958 B
split (mt7620)    46358 B (- 14.3 kiB)
split (mt7621)    48759 B (- 11.9 kiB)
split (mt76x8)    44948 B (- 15.6 kiB)
split (rt288x)    43508 B (- 17.0 kiB)
split (rt305x)    45616 B (- 15.0 kiB)
split (rt3883)    44176 B (- 16.4 kiB)

Run-tested on:
GL.iNet GL-MT300N-V2 (mt76x8)
D-Link DWR-116 (mt7620)

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

1 files changed, 47 insertions, 0 deletions

diff --git a/target/linux/ramips/mt7620/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom b/target/linux/ramips/mt7620/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom
new file mode 100644
index 0000000000..f33ed82f62
--- /dev/null
+++ b/target/linux/ramips/mt7620/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom
@@ -0,0 +1,47 @@
+#!/bin/sh
+
+[ -e /lib/firmware/$FIRMWARE ] && exit 0
+
+. /lib/functions/caldata.sh
+
+jboot_eeprom_extract() {
+	local part=$1
+	local offset=$2
+	local mtd
+
+	mtd=$(find_mtd_part $part)
+	[ -n "$mtd" ] || \
+		caldata_die "no mtd device found for partition $part"
+
+	jboot_config_read -i $mtd -o $offset -e /lib/firmware/$FIRMWARE  2>/dev/null || \
+		caldata_die "failed to extract from $mtd"
+}
+
+board=$(board_name)
+
+case "$FIRMWARE" in
+"soc_wmac.eeprom")
+	case $board in
+	dlink,dir-510l|\
+	dlink,dwr-116-a1|\
+	dlink,dwr-118-a1|\
+	dlink,dwr-118-a2|\
+	dlink,dwr-921-c1|\
+	dlink,dwr-922-e2|\
+	lava,lr-25g001)
+		wan_mac=$(jboot_config_read -m -i $(find_mtd_part "config") -o 0xE000)
+		wifi_mac=$(macaddr_add "$wan_mac" 1)
+		jboot_eeprom_extract "config" 0xE000
+		caldata_patch_mac $wifi_mac 0x4
+		;;
+	dovado,tiny-ac)
+		wifi_mac=$(mtd_get_mac_ascii u-boot-env INIC_MAC_ADDR)
+		caldata_extract "factory" 0x0 0x200
+		caldata_patch_mac $wifi_mac 0x4
+		;;
+	*)
+		caldata_die "Please define mtd-eeprom in $board DTS file!"
+		;;
+	esac
+	;;
+esac