mb/ocp: Provide better defaults for UART

The baudrate of the SOC console is always 57600 and on tiogapass the
0x2f8 COM port is also used by the SOL console.

Change-Id: Ia7bf9fbe10ec66f49c2c7b41938a1a33967c131a
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70500
Reviewed-by: Jonathan Zhang <jonzhang@fb.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/ocp/deltalake/Kconfig

@@ -16,11 +16,15 @@ config BOARD_SPECIFIC_OPTIONS
 	select IPMI_OCP
 	select MEMORY_MAPPED_TPM
 	select MAINBOARD_HAS_TPM2
+	select UART_OVERRIDE_BAUDRATE
 
 config UART_FOR_CONSOLE
 	int
 	default 1
 
+config TTYS0_BAUD
+	default 57600
+
 config POWER_STATE_DEFAULT_ON_AFTER_FAILURE
 	default n
 

src/mainboard/ocp/deltalake/Makefile.inc

@@ -8,4 +8,5 @@ romstage-$(CONFIG_IPMI_KCS_ROMSTAGE) += ipmi.c
 ramstage-y += ramstage.c ipmi.c
 ramstage-$(CONFIG_HAVE_ACPI_TABLES) += fadt.c
 all-$(CONFIG_CONSOLE_OVERRIDE_LOGLEVEL) += loglevel_vpd.c
+all-y += console.c
 CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include

src/mainboard/ocp/deltalake/console.c

@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <console/uart.h>
+
+unsigned int get_uart_baudrate(void)
+{
+	/* SOL console baud rate. */
+	return 57600;
+}

src/mainboard/ocp/tiogapass/Kconfig

@@ -13,6 +13,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select OCP_DMI
 	select SOC_INTEL_SKYLAKE_SP
 	select SUPERIO_ASPEED_AST2400
+	select UART_OVERRIDE_BAUDRATE
 	select VPD
 
 config MAINBOARD_DIR
@@ -28,4 +29,11 @@ config MAINBOARD_FAMILY
 config FMDFILE
 	default "src/mainboard/\$(CONFIG_MAINBOARD_DIR)/board.fmd"
 
+config UART_FOR_CONSOLE
+	int
+	default 1
+
+config TTYS0_BAUD
+	default 57600
+
 endif # BOARD_OCP_TIOGAPASS

src/mainboard/ocp/tiogapass/Makefile.inc

@@ -4,4 +4,6 @@ bootblock-y += bootblock.c
 romstage-y += ipmi.c
 ramstage-y += ramstage.c ipmi.c
 
+all-y += console.c
+
 CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include

src/mainboard/ocp/tiogapass/console.c

@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <console/uart.h>
+
+unsigned int get_uart_baudrate(void)
+{
+	/* SOL console baud rate. */
+	return 57600;
+}