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author | Scott Radcliffe <sradcliffe@microind.com> | 2014-10-14 15:40:59 -0400 |
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committer | Patrick Georgi <pgeorgi@google.com> | 2014-10-17 11:27:07 +0200 |
commit | f5fcedfbc4fe4682ac85bac49c62e59b840fb1f1 (patch) | |
tree | b460315cbbfbe23ae8187343d5448886d5b63b70 /src/mainboard/samsung/stumpy/acpi_tables.c | |
parent | 08c7018050e5af2c604c7b1ef35a66fb9f1171d5 (diff) | |
download | coreboot-f5fcedfbc4fe4682ac85bac49c62e59b840fb1f1.tar.xz |
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)
Diffstat (limited to 'src/mainboard/samsung/stumpy/acpi_tables.c')
0 files changed, 0 insertions, 0 deletions