1 files changed, 62 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/c29x_serdes.c b/arch/powerpc/cpu/mpc85xx/c29x_serdes.c
new file mode 100644
index 0000000000..51972cb7cb
--- /dev/null
+++ b/arch/powerpc/cpu/mpc85xx/c29x_serdes.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <config.h>
+#include <common.h>
+#include <asm/io.h>
+#include <asm/immap_85xx.h>
+#include <asm/fsl_serdes.h>
+
+#define SRDS1_MAX_LANES		4
+
+static u32 serdes1_prtcl_map;
+
+struct serdes_config {
+	u32 protocol;
+	u8 lanes[SRDS1_MAX_LANES];
+};
+
+static const struct serdes_config serdes1_cfg_tbl[] = {
+	/* SerDes 1 */
+	{1, {PCIE1, PCIE1, PCIE1, PCIE1} },
+	{2, {PCIE1, PCIE1, PCIE1, PCIE1} },
+	{3, {PCIE1, PCIE1, NONE, NONE} },
+	{4, {PCIE1, PCIE1, NONE, NONE} },
+	{5, {PCIE1, NONE, NONE, NONE} },
+	{6, {PCIE1, NONE, NONE, NONE} },
+	{}
+};
+
+int is_serdes_configured(enum srds_prtcl device)
+{
+	return (1 << device) & serdes1_prtcl_map;
+}
+
+void fsl_serdes_init(void)
+{
+	ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+	u32 pordevsr = in_be32(&gur->pordevsr);
+	u32 srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
+				MPC85xx_PORDEVSR_IO_SEL_SHIFT;
+	const struct serdes_config *ptr;
+	int lane;
+
+	debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
+
+	if (srds_cfg > ARRAY_SIZE(serdes1_cfg_tbl)) {
+		printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
+		return;
+	}
+
+	ptr = &serdes1_cfg_tbl[srds_cfg];
+	if (!ptr->protocol)
+		return;
+
+	for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
+		enum srds_prtcl lane_prtcl = ptr->lanes[lane];
+		serdes1_prtcl_map |= (1 << lane_prtcl);
+	}
+}