soc/sifive/fu740: Add FU740 SOC

Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I4a8fe02ef0adcb939aa65377a35874715c5ee58a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76689
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: ron minnich <rminnich@gmail.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/src/soc/sifive/fu740/uart.c b/src/soc/sifive/fu740/uart.c
new file mode 100644
index 0000000000..94a6d2d34c
--- /dev/null
+++ b/src/soc/sifive/fu740/uart.c
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <stdint.h>
+#include <console/uart.h>
+#include <commonlib/bsd/helpers.h>
+#include <soc/addressmap.h>
+#include <soc/clock.h>
+
+uintptr_t uart_platform_base(unsigned int idx)
+{
+	if (idx < 2)
+		return FU740_UART(idx);
+	else
+		return 0;
+}
+
+unsigned int uart_platform_refclk(void)
+{
+	// peripheral clock is attached to UART subsystem
+	return clock_get_pclk();
+}