Commit Graph

4 Commits

Author SHA1 Message Date
Duncan Laurie 23b0053586 SPI: Fix and enable Fast Read support
- Fix handling of 5-byte Fast Read command in the ICH SPI
driver.  This fix is ported from the U-boot driver.
- Allow CONFIG_SPI_FLASH_NO_FAST_READ to be overridden by
defining a name for the bool in Kconfig and removing the
forced select in southbridge config
- Fix use of CONFIG_SPI_FLASH_NO_FAST_READ in SPI drivers
to use #if instead of #ifdef
- Relocate flash functions in SMM so they are usable.
This really only needs to happen for read function pointer
since it uses a global function rather than a static one from
the chip, but it is good to ensure the rest are set up
correctly as well.

Change-Id: Ic1bb0764cb111f96dd8a389d83b39fe8f5e72fbd
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1775
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-11-12 17:09:21 +01:00
Duncan Laurie a2f1b95340 SPI: opmenu special case for WREN as atomic prefix
The code that attempts to use the opmenu needs to have a special
case for write enable now that it is handled as an atomic prefix
and not as a standalone opcode.

To test, ensure that runtime SPI write via ELOG is successful by
checking the event log for a kernel shutdown reason code:

5 | 2012-08-27 11:09:48 | Kernel Event | Clean Shutdown
6 | 2012-08-27 11:09:50 | System boot | 26
7 | 2012-08-27 11:09:50 | System Reset

Change-Id: I527638ef3e2a5ab100192c5be6e6b3b40916295a
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1710
Reviewed-by: Marc Jones <marcj303@gmail.com>
Tested-by: build bot (Jenkins)
2012-11-07 18:39:42 +01:00
Stefan Reinauer 5f3aca39d3 SPI flash layer: remove unused function spi_flash_free()
We don't ever free memory in coreboot, hence drop spi_flash_free() and
spi_free_slave()

Change-Id: I0ca3f78574ceb4516e7d33c06ab1a58abfb3b0ec
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1273
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-07-24 02:37:39 +02:00
Stefan Reinauer 1c56d9b102 Add SPI flash driver
This driver is taken from u-boot and adapted to match
coreboot. It still contains some hacks and is ICH specific
at places.

Change-Id: I97dd8096f7db3b62f8f4f4e4d08bdee10d88f689
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/997
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-05-10 23:52:44 +02:00