From eea80bc4ab45821319265662c23cf4f33180eda4 Mon Sep 17 00:00:00 2001
From: Hristo Venev <hristo@venev.name>
Date: Thu, 20 Aug 2020 13:15:32 +0300
Subject: [PATCH] rpi-eeprom-update: Upstream kernel fix

Upstream kernels do not list the board revision in /proc/cpuinfo. Get it
from the device tree instead.
---
 rpi-eeprom-update | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rpi-eeprom-update b/rpi-eeprom-update
index 6a936fa..37befdb 100755
--- a/rpi-eeprom-update
+++ b/rpi-eeprom-update
@@ -268,7 +268,7 @@ getBootloaderUpdateVersion() {
 }
 
 checkDependencies() {
-   BOARD_INFO="$(sed -n '/^Revision/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo)"
+   BOARD_INFO="$(hexdump -e '1/1 "%02x"' /sys/firmware/devicetree/base/system/linux,revision)"
    if [ $(((0x$BOARD_INFO >> 23) & 1)) -ne 0 ] && [ $(((0x$BOARD_INFO >> 12) & 15)) -eq 3 ]; then
       echo "BCM2711 detected"
    else