From 5ff17ed393ce09245592218cc42015d6479f02a4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michael=20Niew=C3=B6hner?= Date: Mon, 21 Dec 2020 03:46:58 +0100 Subject: mb/siemens/mc_apl1: do UART pad configuration at board-level MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit UART pad configuration should not be done in common code, because that may cause short circuits, when the user sets a wrong UART index. Thus, add the corresponding pads to the early UART gpio table for the board as a first step. Common UART pad config code then gets dropped in CB:48829. Also switch to `bootblock_mainboard_early_init` to configure the pads in early bootblock before console initialization, to make the console work as early as possible. The board does not do any other gpio configuration in bootblock, so this should not influence behaviour in a negative way (e.g. breaking overrides). Change-Id: Iac8a6e386b708ae5c4dbf0677bfe05f1358bf8fd Signed-off-by: Michael Niewöhner Reviewed-on: https://review.coreboot.org/c/coreboot/+/49442 Tested-by: siemens-bot Tested-by: build bot (Jenkins) Reviewed-by: Mario Scheithauer Reviewed-by: Uwe Poeche Reviewed-by: Angel Pons --- src/mainboard/siemens/mc_apl1/bootblock.c | 2 +- src/mainboard/siemens/mc_apl1/variants/baseboard/gpio.c | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/src/mainboard/siemens/mc_apl1/bootblock.c b/src/mainboard/siemens/mc_apl1/bootblock.c index 01c8e93d28..a858f1b048 100644 --- a/src/mainboard/siemens/mc_apl1/bootblock.c +++ b/src/mainboard/siemens/mc_apl1/bootblock.c @@ -4,7 +4,7 @@ #include #include -void bootblock_mainboard_init(void) +void bootblock_mainboard_early_init(void) { const struct pad_config *pads; size_t num; diff --git a/src/mainboard/siemens/mc_apl1/variants/baseboard/gpio.c b/src/mainboard/siemens/mc_apl1/variants/baseboard/gpio.c index 2edd92e1b0..6a3b859f55 100644 --- a/src/mainboard/siemens/mc_apl1/variants/baseboard/gpio.c +++ b/src/mainboard/siemens/mc_apl1/variants/baseboard/gpio.c @@ -356,6 +356,9 @@ const struct pad_config *__weak variant_gpio_table(size_t *num) /* GPIOs needed prior to ramstage. */ static const struct pad_config early_gpio_table[] = { + /* UART */ + PAD_CFG_NF(GPIO_46, NATIVE, DEEP, NF1), /* LPSS_UART2_RXD */ + PAD_CFG_NF_IOSSTATE(GPIO_47, NATIVE, DEEP, NF1, Tx1RxDCRx0), /* LPSS_UART2_TXD */ /* Debug tracing. */ PAD_CFG_GPI(GPIO_0, DN_20K, DEEP), /* TRACE_0_CLK_VNN */ -- cgit v1.2.3