the following patch was just integrated into master: commit f5fcedfbc4fe4682ac85bac49c62e59b840fb1f1 Author: Scott Radcliffe sradcliffe@microind.com Date: Tue Oct 14 15:40:59 2014 -0400
drivers/spi: Add support for Micron N25Q128
Support added for Micron N25Q128 SPI flash, which has the same manufacturer id as ST Micro. Jedec ID = 0x20 0xBB 0x18. Since existing stmicro.c only compares the last device id byte, this flash is mistakenly identified as M25P128, which has ID = 0x20 0x20 0x18.
To handle this situation and avoid breaking code for existing devices, a two byte .id member is added. New devices should be added to the beginning of the flash table array with .idcode = STM_ID_USE_ALT_ID and .id = the two byte jedec device id.
A 4KB subsector erase capability is added and used for this new device. It requires using a different SPI op-code supported by adding .op_erase member. Previous devices defined in stmicro.c are assigned their original op-code for 64KB sector erase.
N25Q128 is now working on a custom designed Bayley Bay based board. Tested by verifying the MRC fastboot cache is successfully (re)written. Note that previous devices were not retested.
Change-Id: Ic63d86958bf8d301898a157b435f549a0dd9893c Signed-off-by: Scott Radcliffe sradcliffe@microind.com Reviewed-on: http://review.coreboot.org/7077 Reviewed-by: Patrick Georgi pgeorgi@google.com Reviewed-by: Paul Menzel paulepanter@users.sourceforge.net Tested-by: build bot (Jenkins)
See http://review.coreboot.org/7077 for details.
-gerrit