From 28747f9bb1623d8333c419ae679b914bcabd4836 Mon Sep 17 00:00:00 2001
From: Prabhakar Kushwaha <prabhakar@freescale.com>
Date: Thu, 20 Jan 2011 16:34:41 +0530
Subject: powerpc/85xx: Add SERDES support for P1010/P1014

Add the ability to determine if a given IP block connected on SERDES is
configured. This is useful for things like PCIe and SRIO since they are only
ever connected on SERDES.

Updated MPC85xx_PORDEVSR_IO_SEL & MPC85xx_PORDEVSR_IO_SEL_SHIFT

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
 arch/powerpc/cpu/mpc85xx/Makefile       |  2 +
 arch/powerpc/cpu/mpc85xx/p1010_serdes.c | 75 +++++++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+)
 create mode 100644 arch/powerpc/cpu/mpc85xx/p1010_serdes.c

(limited to 'arch/powerpc/cpu')

diff --git a/arch/powerpc/cpu/mpc85xx/Makefile b/arch/powerpc/cpu/mpc85xx/Makefile
index cbb0fc6..628e1cf 100644
--- a/arch/powerpc/cpu/mpc85xx/Makefile
+++ b/arch/powerpc/cpu/mpc85xx/Makefile
@@ -87,9 +87,11 @@ COBJS-$(CONFIG_MPC8548) += mpc8548_serdes.o
 COBJS-$(CONFIG_MPC8568) += mpc8568_serdes.o
 COBJS-$(CONFIG_MPC8569) += mpc8569_serdes.o
 COBJS-$(CONFIG_MPC8572) += mpc8572_serdes.o
+COBJS-$(CONFIG_P1010)	+= p1010_serdes.o
 COBJS-$(CONFIG_P1011)	+= p1021_serdes.o
 COBJS-$(CONFIG_P1012)	+= p1021_serdes.o
 COBJS-$(CONFIG_P1013)	+= p1022_serdes.o
+COBJS-$(CONFIG_P1014)	+= p1010_serdes.o
 COBJS-$(CONFIG_P1020)	+= p1021_serdes.o
 COBJS-$(CONFIG_P1021)	+= p1021_serdes.o
 COBJS-$(CONFIG_P1022)	+= p1022_serdes.o
diff --git a/arch/powerpc/cpu/mpc85xx/p1010_serdes.c b/arch/powerpc/cpu/mpc85xx/p1010_serdes.c
new file mode 100644
index 0000000..e8a0387
--- /dev/null
+++ b/arch/powerpc/cpu/mpc85xx/p1010_serdes.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ * Author: Prabhakar Kushwaha <prabhakar@freescale.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#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
+#define SRDS2_MAX_LANES		2
+
+static u32 serdes1_prtcl_map, serdes2_prtcl_map;
+
+static const u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
+	[0x00] = {NONE, NONE, NONE, NONE},
+	[0x01] = {PCIE1, PCIE2, SGMII_TSEC2, SGMII_TSEC3},
+	[0x02] = {PCIE1, SGMII_TSEC1, SGMII_TSEC2, SGMII_TSEC3},
+	[0x03] = {NONE, SGMII_TSEC1, SGMII_TSEC2, SGMII_TSEC3},
+};
+
+static const u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = {
+	[0x00] = {NONE, NONE},
+	[0x01] = {SATA1, SATA2},
+	[0x02] = {SATA1, SATA2},
+	[0x03] = {PCIE1, PCIE2},
+};
+
+
+int is_serdes_configured(enum srds_prtcl device)
+{
+	int ret = (1 << device) & serdes1_prtcl_map;
+
+	if (ret)
+		return ret;
+
+	return (1 << device) & serdes2_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;
+	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;
+	}
+	for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
+		enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
+		serdes1_prtcl_map |= (1 << lane_prtcl);
+	}
+
+	if (srds_cfg > ARRAY_SIZE(serdes2_cfg_tbl)) {
+		printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
+		return;
+	}
+
+	for (lane = 0; lane < SRDS2_MAX_LANES; lane++) {
+		enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds_cfg][lane];
+		serdes2_prtcl_map |= (1 << lane_prtcl);
+	}
+}
-- 
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