[U-Boot] [PATCH v7 21/21] sf: Add SPI NOR protection mechanism

[Tom Rini]

On Thu, Nov 05, 2015 at 12:43:42PM -0200, Fabio Estevam wrote:

> Many SPI flashes have protection bits (BP2, BP1 and BP0) in the
> status register that can protect selected regions of the SPI NOR.
> 
> Take these bits into account when performing erase operations,
> making sure that the protected areas are skipped.
> 
> Tested on a mx6qsabresd:
> 
> => sf probe
> SF: Detected M25P32 with page size 256 Bytes, erase size 64 KiB, total 4 MiB
> => sf protect lock  0x3f0000 0x10000
> => sf erase 0x3f0000 0x10000
> offset 0x3f0000 is protected and cannot be erased
> SF: 65536 bytes @ 0x3f0000 Erased: ERROR
> => sf protect unlock  0x3f0000 0x10000
> => sf erase 0x3f0000 0x10000
> SF: 65536 bytes @ 0x3f0000 Erased: OK
> 
> Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
> [re-worked to fit the lock common to dm and non-dm]
> Signed-off-by: Jagan Teki <jteki at openedev.com>
> Reviewed-by: Tom Rini <trini at konsulko.com>
> Reviewed-by: Heiko Schocher <hs at denx.de>
> Reviewed-by: Jagan Teki <jteki at openedev.com>

Applied to u-boot/master, thanks!

-- 
Tom
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 836 bytes
Desc: Digital signature
URL: <http://lists.denx.de/pipermail/u-boot/attachments/20151106/698c1301/attachment.sig>