Supporting new flash in pflash

[Norman James]

I used a flash chip that pflash does recognize and it fails with this:

root at barreleye:~# pflash -b -i
LIBFLASH: Failed to set controller 4b mode
LIBFLASH: Flash configuration failed
Failed to open flash chip

It is like the BMC is holding it hostage?



Regards,
Norman James
IBM - POWER Systems Architect
Phone: 1-512-286-6807 (T/L: 363-6807)
Internet: njames at us.ibm.com




From:	Joel Stanley <joel at jms.id.au>
To:	Benjamin Herrenschmidt <benh at kernel.crashing.org>
Cc:	OpenBMC Maillist <openbmc at lists.ozlabs.org>
Date:	11/18/2015 12:54 AM
Subject:	Supporting new flash in pflash
Sent by:	"openbmc" <openbmc-bounces+njames=us.ibm.com at lists.ozlabs.org>



Hi Ben,

On the barreleye BMC we have a 32MB flash. I can pflash -i the system
pnor, but when I attempt to look at the BMC flash, It errors out.

u-boot indicated that it's a 0x20ba19, so I added this to the flash_info
table.

+       { 0x20ba19, 0x02000000, FL_ERASE_4K  | FL_ERASE_64K | FL_CAN_4B |
+                                FL_ERASE_BULK | FL_MICRON_BUGS,
+                                                          "Micron
N25Q256A"    },

However this fails:

root at barreleye:~# ./pflash -i -b
LIBFLASH: Failed to set controller 4b mode
LIBFLASH: Flash configuration failed
Failed to open flash chip

Do you have any ideas?

Cheers,

Joel
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