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From 447fd4347f06af3a369045149ba74f9b914cd99e Mon Sep 17 00:00:00 2001
From: Christian Lamparter <chunkeey@gmail.com>
Date: Tue, 23 Nov 2021 21:42:21 +0100
Subject: [PATCH] ARM: dts: gemini: NAS4220-B: fis-index-block with 128 KiB
sectors
Steven Maddox reported in the OpenWrt bugzilla, that his
RaidSonic IB-NAS4220-B was no longer booting with the new
OpenWrt 21.02 (uses linux 5.10's device-tree). However, it was
working with the previous OpenWrt 19.07 series (uses 4.14).
|[ 5.548038] No RedBoot partition table detected in 30000000.flash
|[ 5.618553] Searching for RedBoot partition table in 30000000.flash at offset 0x0
|[ 5.739093] No RedBoot partition table detected in 30000000.flash
|...
|[ 7.039504] Waiting for root device /dev/mtdblock3...
The provided bootlog shows that the RedBoot partition parser was
looking for the partition table "at offset 0x0". Which is strange
since the comment in the device-tree says it should be at 0xfe0000.
Further digging on the internet led to a review site that took
some useful PCB pictures of their review unit back in February 2009.
Their picture shows a Spansion S29GL128N11TFI01 flash chip.
From Spansion's Datasheet:
"S29GL128N: One hundred twenty-eight 64 Kword (128 Kbyte) sectors"
The reported also provided a "cat /sys/class/mtd/mtd0/erasesize",
which returned "131072".
With the 128 KiB Sector/Erasesize in mind. This patch changes the
fis-index-block property to (0xfe0000 / 0x20000) = 0x7f.
Note:
Let's hope the vendor stuck to the 128 KiB sector size flash chip
for all units still out there.
Fixes: b5a923f8c739 ("ARM: dts: gemini: Switch to redboot partition parsing")
Bugzilla: https://bugs.openwrt.org/index.php?do=details&task_id=4137
Reported-by: Steven Maddox <s.maddox@lantizia.me.uk>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
--- a/arch/arm/boot/dts/gemini-nas4220b.dts
+++ b/arch/arm/boot/dts/gemini-nas4220b.dts
@@ -84,7 +84,7 @@
partitions {
compatible = "redboot-fis";
/* Eraseblock at 0xfe0000 */
- fis-index-block = <0x1fc>;
+ fis-index-block = <0x7f>;
};
};
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