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spi_master: Introduce SPI_MASTER_4BA feature flag

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Add a feature flag SPI_MASTER_4BA to `struct spi_master` that advertises
programmer-side support for 4-byte addresses in generic commands (and
read/write commands if the master uses the default implementations). Set
it for all masters that handle commands address-agnostic.

Don't prefer native 4BA instructions if the master doesn't support them.

Change-Id: Ife66e3fc49b9716f9c99cad957095b528135ec2c
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/22421
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
This commit is contained in:
Nico Huber
2017-11-10 20:18:23 +01:00
parent ed098d62d6
commit 1cf407b4f8
9 changed files with 30 additions and 5 deletions
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1
buspirate_spi.c
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@ -136,6 +136,7 @@ static int buspirate_spi_send_command_v2(struct flashctx *flash, unsigned int wr
static struct spi_master spi_master_buspirate = {
.type = SPI_CONTROLLER_BUSPIRATE,
.features = SPI_MASTER_4BA,
.max_data_read = MAX_DATA_UNSPECIFIED,
.max_data_write = MAX_DATA_UNSPECIFIED,
.command = NULL,