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authorKumar Gala <galak@kernel.crashing.org>2010-04-20 10:20:33 -0500
committerKumar Gala <galak@kernel.crashing.org>2010-05-12 04:53:50 -0500
commit6ab4011b796e0af130ca160ea3c674d462f3bec4 (patch)
tree186aaf0b13e15e1a8fbdadd969ea10278a30fff7
parent15351855776f32d40d9c336c0dc6d22a7bcf40c2 (diff)
downloadu-boot-linaro-stable-6ab4011b796e0af130ca160ea3c674d462f3bec4.tar.gz
85xx: Add is_serdes_configured() support to MPC8536 SERDES
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. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-rw-r--r--arch/powerpc/cpu/mpc85xx/mpc8536_serdes.c79
-rw-r--r--arch/powerpc/include/asm/fsl_serdes.h53
2 files changed, 114 insertions, 18 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/mpc8536_serdes.c b/arch/powerpc/cpu/mpc85xx/mpc8536_serdes.c
index cb6a6f00c..7e72f5fb7 100644
--- a/arch/powerpc/cpu/mpc85xx/mpc8536_serdes.c
+++ b/arch/powerpc/cpu/mpc85xx/mpc8536_serdes.c
@@ -1,17 +1,31 @@
/*
- * Copyright (C) 2008 Freescale Semicondutor, Inc.
+ * Copyright 2008,2010 Freescale Semiconductor, Inc.
* Dave Liu <daveliu@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.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
*/
#include <config.h>
#include <common.h>
#include <asm/io.h>
#include <asm/immap_85xx.h>
+#include <asm/fsl_serdes.h>
/* PORDEVSR register */
#define GUTS_PORDEVSR_OFFS 0xc
@@ -52,6 +66,61 @@
#define FSL_SRDSCR3_LANEE_SGMII 0x00000000
#define FSL_SRDSCR3_LANEE_SATA 0x00150005
+
+#define SRDS1_MAX_LANES 8
+#define SRDS2_MAX_LANES 2
+
+static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
+ [0x2] = {PCIE1, PCIE1, PCIE1, PCIE1, NONE, NONE, NONE, NONE},
+ [0x3] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1},
+ [0x5] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2},
+ [0x7] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE3, PCIE3},
+};
+
+static u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = {
+ [0x1] = {SATA1, SATA2},
+ [0x3] = {SATA1, NONE},
+ [0x4] = {SGMII_TSEC1, SGMII_TSEC3},
+ [0x6] = {SGMII_TSEC1, NONE},
+};
+
+int is_serdes_configured(enum srds_prtcl device)
+{
+ int i;
+ ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+ u32 pordevsr = in_be32(&gur->pordevsr);
+ u32 srds1_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
+ MPC85xx_PORDEVSR_IO_SEL_SHIFT;
+
+ u32 srds2_cfg = (pordevsr & MPC85xx_PORDEVSR_SRDS2_IO_SEL) >>
+ GUTS_PORDEVSR_SERDES2_IO_SEL_SHIFT;
+
+ debug("%s: dev = %d\n", __FUNCTION__, device);
+ debug("PORDEVSR[IO_SEL] = %x\n", srds1_cfg);
+ debug("PORDEVSR[SRDS2_IO_SEL] = %x\n", srds2_cfg);
+
+ if (srds1_cfg > ARRAY_SIZE(serdes1_cfg_tbl)) {
+ printf("Invalid PORDEVSR[IO_SEL] = %d\n", srds1_cfg);
+ return 0;
+ }
+
+ if (srds2_cfg > ARRAY_SIZE(serdes2_cfg_tbl)) {
+ printf("Invalid PORDEVSR[SRDS2_IO_SEL] = %d\n", srds2_cfg);
+ return 0;
+ }
+
+ for (i = 0; i < SRDS1_MAX_LANES; i++) {
+ if (serdes1_cfg_tbl[srds1_cfg][i] == device)
+ return 1;
+ }
+ for (i = 0; i < SRDS2_MAX_LANES; i++) {
+ if (serdes2_cfg_tbl[srds2_cfg][i] == device)
+ return 1;
+ }
+
+ return 0;
+}
+
void fsl_serdes_init(void)
{
void *guts = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
diff --git a/arch/powerpc/include/asm/fsl_serdes.h b/arch/powerpc/include/asm/fsl_serdes.h
index 6da4b6ff9..d4839f467 100644
--- a/arch/powerpc/include/asm/fsl_serdes.h
+++ b/arch/powerpc/include/asm/fsl_serdes.h
@@ -1,21 +1,48 @@
+/*
+ * Copyright 2010 Freescale Semiconductor, Inc.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
#ifndef __FSL_SERDES_H
#define __FSL_SERDES_H
#include <config.h>
-#define FSL_SERDES_CLK_100 (0 << 28)
-#define FSL_SERDES_CLK_125 (1 << 28)
-#define FSL_SERDES_CLK_150 (3 << 28)
-#define FSL_SERDES_PROTO_SATA 0
-#define FSL_SERDES_PROTO_PEX 1
-#define FSL_SERDES_PROTO_PEX_X2 2
-#define FSL_SERDES_PROTO_SGMII 3
-#define FSL_SERDES_VDD_1V 1
+enum srds_prtcl {
+ NONE = 0,
+ PCIE1,
+ PCIE2,
+ PCIE3,
+ PCIE4,
+ SATA1,
+ SATA2,
+ SRIO1,
+ SRIO2,
+ SGMII_FM1,
+ SGMII_FM2,
+ SGMII_TSEC1,
+ SGMII_TSEC2,
+ SGMII_TSEC3,
+ SGMII_TSEC4,
+ XAUI_FM1,
+ XAUI_FM2,
+ AURORA,
+};
-#ifdef CONFIG_FSL_SERDES
-extern void fsl_setup_serdes(u32 offset, char proto, u32 rfcks, char vdd);
-#else
-static void fsl_setup_serdes(u32 offset, char proto, u32 rfcks, char vdd) {}
-#endif /* CONFIG_FSL_SERDES */
+int is_serdes_configured(enum srds_prtcl device);
#endif /* __FSL_SERDES_H */