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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 option to manually attach the generated amdfw.rom at an
offset of 0x20000 from the bottom of the coreboot ROM image. 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 endif
config HUDSON_UART 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 */ /* Initialize i8254 timers */
setup_i8254 (); 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) static void hudson_lpc_read_resources(device_t dev)