soc/amd/picasso/uart: factor out console-related functions

Move uart_platform_base and uart_platform_refclk to their own
compilation unit to avoid preprocessor usage. The newly created
compilation unit is only added to the build when PICASSO_CONSOLE_UART
is selected.

Change-Id: I56911addc8c000a0772156e5166720867cdd26fe
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42517
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

2 files changed, 13 insertions, 2 deletions

diff --git a/src/soc/amd/picasso/include/soc/southbridge.h b/src/soc/amd/picasso/include/soc/southbridge.h
index 97b0ab4d35..e9f7e2e2b2 100644
--- a/src/soc/amd/picasso/include/soc/southbridge.h
+++ b/src/soc/amd/picasso/include/soc/southbridge.h
@@ -287,8 +287,6 @@ void southbridge_final(void *chip_info);
 void southbridge_init(void *chip_info);
 void fch_pre_init(void);
 void fch_early_init(void);
-void set_uart_config(int idx);
-void clear_uart_legacy_config(void);
 
 /* Initialize all the i2c buses that are marked with early init. */
 void i2c_soc_early_init(void);
diff --git a/src/soc/amd/picasso/include/soc/uart.h b/src/soc/amd/picasso/include/soc/uart.h
new file mode 100644
index 0000000000..3aac936dff
--- /dev/null
+++ b/src/soc/amd/picasso/include/soc/uart.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __PICASSO_UART_H__
+#define __PICASSO_UART_H__
+
+#include <types.h>
+
+void set_uart_config(int idx); /* configure hardware of FCH UART selected by idx */
+void clear_uart_legacy_config(void); /* disable legacy I/O decode for FCH UART */
+
+uintptr_t get_uart_base(int idx); /* get MMIO base address of FCH UART */
+
+#endif /* __PICASSO_UART_H__ */