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This change adds support for following SPI configuration functions to
common block SPI driver and exposes them to be used by SoC:
1. fch_spi_early_init(): Sets up SPI ROM base, enables SPI ROM,
enables prefetching, disables 4dw burst mode and sets SPI speed and mode.
2. fch_spi_config_modes(): This allows SoC to configure SPI speed and
mode. It uses SPI settings from soc_amd_common_config to configure the
speed and mode.
These functions expect SoC to include soc_amd_common_config in SoC
chip config and mainboard to configure these settings in device tree.
Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: Ia4f231bab69e8450005dd6abe7a8e014d5eb7261
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41248
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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This removes all the duplicated code and logic and leverages
the existing ones in libraries themselves. The current side
effect is that protection cannot be fully enabled because the
read, write, and write enable command are not exposed in struct
spi_flash currently. That support can be revised if protection
scheme makes sense for our use-cases once it's better understood.
BUG=b:146928174
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Change-Id: I8faf9cc719ee33dd9f03fb74b579b02bbc6a5e2e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37957
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Create a new SPI code that overrides flash operations and uses the SPI
controller within the FCH to its fullest.
Reference: Family 15h models 70h-7Fh BKDG revision 3.06 (public)
BUG=b:136595978
TEST=Build and boot grunt using this code, with debug enabled. Check
output.
Change-Id: Id293fb9b2da84c4206c7a1341b64e83fc0b8d71d
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35018
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
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