linux-kernel - [PATCH 3.14 068/100] ARM: mvebu: Netgear RN2120: Use Hardware BCH ECC

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 28 Oct 2014 11:35:53 +0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Arnaud Ebalard <arno@...isbad.org>,
	Jason Cooper <jason@...edaemon.net>
Subject: [PATCH 3.14 068/100] ARM: mvebu: Netgear RN2120: Use Hardware BCH ECC

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Arnaud Ebalard <arno@...isbad.org>

commit 500abb6ccb9e3f8d638a7f422443a8549245ef90 upstream.

The bootloader on the Netgear ReadyNAS RN2120 uses Hardware BCH
ECC (strength = 4), while the pxa3xx NAND driver by default uses
Hamming ECC (strength = 1).

This patch changes the ECC mode on these machines to match that
of the bootloader and of the stock firmware. That way, it is
now possible to update the kernel from userland (e.g. using
standard tools from mtd-utils package); u-boot will happily
load and boot it.

The issue was initially reported and fixed by Ben Pedell for
RN102. The RN2120 shares the same Hynix H27U1G8F2BTR NAND
flash and setup. This patch is based on Ben's fix for RN102.

Fixes: ad51eddd95ad ("ARM: mvebu: Enable NAND controller in ReadyNAS 2120 .dts file")
Signed-off-by: Arnaud Ebalard <arno@...isbad.org>
Link: https://lkml.kernel.org/r/61f6a1b7ad0adc57a0e201b9680bc2e5f214a317.1410035142.git.arno@natisbad.org
Signed-off-by: Jason Cooper <jason@...edaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/boot/dts/armada-xp-netgear-rn2120.dts |    4 ++++
 1 file changed, 4 insertions(+)

--- a/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts
+++ b/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts
@@ -224,6 +224,10 @@
 				marvell,nand-enable-arbiter;
 				nand-on-flash-bbt;

+				/* Use Hardware BCH ECC */
+				nand-ecc-strength = <4>;
+				nand-ecc-step-size = <512>;
+
 				partition@0 {
 					label = "u-boot";
 					reg = <0x0000000 0x180000>;  /* 1.5MB */

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/