Re: [U-Boot] [PATCH v2 3/7] spl: nand: support redundant u-boot image

2016-06-04 Thread Scott Wood
On Sat, 2016-06-04 at 08:15 +0200, Boris Brezillon wrote: > On Fri, 03 Jun 2016 20:15:16 -0500 > Scott Wood wrote: > > > How does the failure get communicated to later > > parts of the system that would be responsible for such reflashing? > > Linux is taking care of that (a script tries to read

Re: [U-Boot] [PATCH v2 3/7] spl: nand: support redundant u-boot image

2016-06-03 Thread Boris Brezillon
On Fri, 03 Jun 2016 20:15:16 -0500 Scott Wood wrote: > On Wed, 2016-06-01 at 13:23 +0200, Boris Brezillon wrote: > > On modern NAND it's more than recommended to have a backup copy of the > > u-boot binary to recover from corruption: bitflips are quite common on > > MLC NANDs, and the read-distur

Re: [U-Boot] [PATCH v2 3/7] spl: nand: support redundant u-boot image

2016-06-03 Thread Scott Wood
On Wed, 2016-06-01 at 13:23 +0200, Boris Brezillon wrote: > On modern NAND it's more than recommended to have a backup copy of the > u-boot binary to recover from corruption: bitflips are quite common on > MLC NANDs, and the read-disturbance will corrupt your u-boot partitition > more quickly than

[U-Boot] [PATCH v2 3/7] spl: nand: support redundant u-boot image

2016-06-01 Thread Boris Brezillon
On modern NAND it's more than recommended to have a backup copy of the u-boot binary to recover from corruption: bitflips are quite common on MLC NANDs, and the read-disturbance will corrupt your u-boot partitition more quickly than what you would see on an SLC NAND. Add an extra Kconfig option to