soc/amd/cezanne: add basic early FCH initialization to bootblock

Change-Id: I1c6d32a5498a7adcee3c8c3145f85e9dba26bf7e
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48475
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/src/soc/amd/cezanne/early_fch.c b/src/soc/amd/cezanne/early_fch.c
new file mode 100644
index 0000000000..6616d075b9
--- /dev/null
+++ b/src/soc/amd/cezanne/early_fch.c
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <amdblocks/acpimmio.h>
+#include <amdblocks/smbus.h>
+#include <console/console.h>
+#include <soc/southbridge.h>
+
+/* Before console init */
+void fch_pre_init(void)
+{
+	enable_acpimmio_decode_pm04();
+	fch_smbus_init();
+	fch_enable_cf9_io();
+	fch_enable_legacy_io();
+}
+
+/* After console init */
+void fch_early_init(void)
+{
+	fch_print_pmxc0_status();
+}