From 3eec9dda1fa7aed3cd6a47232201c23303b3d686 Mon Sep 17 00:00:00 2001 From: Marc Jones Date: Sun, 9 Apr 2017 18:00:40 -0600 Subject: 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 Reviewed-on: https://review.coreboot.org/19234 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth --- src/southbridge/amd/pi/hudson/Kconfig | 6 ++++++ src/southbridge/amd/pi/hudson/lpc.c | 7 +++++++ 2 files changed, 13 insertions(+) diff --git a/src/southbridge/amd/pi/hudson/Kconfig b/src/southbridge/amd/pi/hudson/Kconfig index bb58722a21..233260f026 100644 --- a/src/southbridge/amd/pi/hudson/Kconfig +++ b/src/southbridge/amd/pi/hudson/Kconfig @@ -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 diff --git a/src/southbridge/amd/pi/hudson/lpc.c b/src/southbridge/amd/pi/hudson/lpc.c index 1dacfd0dbd..38c57331b2 100644 --- a/src/southbridge/amd/pi/hudson/lpc.c +++ b/src/southbridge/amd/pi/hudson/lpc.c @@ -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) -- cgit v1.2.3