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amd/pi/hudson: Add SERIRQ setup 

Enable SERIRQ in quiet or continuous mode based on Kconfig.
Defaults to quite mode.

Change-Id: Ib40a84719fcc3a5d6b3000c3c0412f1bcf629609
Signed-off-by: Marc Jones <marcj303@gmail.com>
Reviewed-on: https://review.coreboot.org/19234
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
This commit is contained in:
Marc Jones 2017-04-09 18:00:40 -06:00 committed by Martin Roth
parent d771786058
commit 3eec9dda1f
2 changed files with 13 additions and 0 deletions
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6
src/southbridge/amd/pi/hudson/Kconfig
View File

@ -213,6 +213,12 @@ config AMDFW_OUTSIDE_CBFS
option to manually attach the generated amdfw.rom at an
offset of 0x20000 from the bottom of the coreboot ROM image.
config SERIRQ_CONTINUOUS_MODE
bool
default n
help
Set this option to y for serial IRQ in continuous mode.
Otherwise it is in quiet mode.
endif
config HUDSON_UART

7
src/southbridge/amd/pi/hudson/lpc.c
View File

@ -83,6 +83,13 @@ static void lpc_init(device_t dev)
/* Initialize i8254 timers */
setup_i8254 ();
/* Setup SERIRQ, enable continuous mode */
byte = (BIT(4) | BIT(7));
if (!IS_ENABLED(CONFIG_SERIRQ_CONTINUOUS_MODE))
byte |= BIT(6);
pm_write8(PM_SERIRQ_CONF, byte);
}
static void hudson_lpc_read_resources(device_t dev)