1 files changed, 53 insertions, 0 deletions
diff --git a/src/soc/amd/common/block/spi/fch_spi_util.c b/src/soc/amd/common/block/spi/fch_spi_util.c
new file mode 100644
index 0000000000..7bac99191a
--- /dev/null
+++ b/src/soc/amd/common/block/spi/fch_spi_util.c
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <amdblocks/lpc.h>
+#include <amdblocks/spi.h>
+#include <arch/mmio.h>
+#include <assert.h>
+#include <stdint.h>
+
+static uintptr_t spi_base;
+
+void spi_set_base(void *base)
+{
+	spi_base = (uintptr_t)base;
+}
+
+uintptr_t spi_get_bar(void)
+{
+	if (ENV_X86 && !spi_base)
+		spi_set_base((void *)lpc_get_spibase());
+	ASSERT(spi_base);
+
+	return spi_base;
+}
+
+uint8_t spi_read8(uint8_t reg)
+{
+	return read8((void *)(spi_get_bar() + reg));
+}
+
+uint16_t spi_read16(uint8_t reg)
+{
+	return read8((void *)(spi_get_bar() + reg));
+}
+
+uint32_t spi_read32(uint8_t reg)
+{
+	return read32((void *)(spi_get_bar() + reg));
+}
+
+void spi_write8(uint8_t reg, uint8_t val)
+{
+	write8((void *)(spi_get_bar() + reg), val);
+}
+
+void spi_write16(uint8_t reg, uint16_t val)
+{
+	write16((void *)(spi_get_bar() + reg), val);
+}
+
+void spi_write32(uint8_t reg, uint32_t val)
+{
+	write32((void *)(spi_get_bar() + reg), val);
+}