powerpc: add support for the Freescale P1022DS reference board

Specifics:

1) 36-bit only
2) Booting from NOR flash only
3) Environment stored in NOR flash only
4) No SPI support
5) No DIU support

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

2 files changed, 167 insertions, 0 deletions

diff --git a/arch/powerpc/cpu/mpc85xx/Makefile b/arch/powerpc/cpu/mpc85xx/Makefile
index f064fee..a481326 100644
--- a/arch/powerpc/cpu/mpc85xx/Makefile
+++ b/arch/powerpc/cpu/mpc85xx/Makefile
@@ -63,6 +63,7 @@ COBJS-$(CONFIG_CPM2)	+= ether_fcc.o
 COBJS-$(CONFIG_OF_LIBFDT) += fdt.o
 COBJS-$(CONFIG_MP)	+= mp.o
 COBJS-$(CONFIG_MPC8536) += mpc8536_serdes.o
+COBJS-$(CONFIG_P1022)	+= p1022_serdes.o
 COBJS-$(CONFIG_PCI)	+= pci.o
 COBJS-$(CONFIG_QE)	+= qe_io.o
 COBJS-$(CONFIG_CPM2)	+= serial_scc.o
diff --git a/arch/powerpc/cpu/mpc85xx/p1022_serdes.c b/arch/powerpc/cpu/mpc85xx/p1022_serdes.c
new file mode 100644
index 0000000..52e109b
--- /dev/null
+++ b/arch/powerpc/cpu/mpc85xx/p1022_serdes.c
@@ -0,0 +1,166 @@
+/*
+ * Copyright 2010 Freescale Semiconductor, Inc.
+ * Author: Timur Tabi <timur@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 const u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
+	[0x00] = {NONE, NONE, NONE, NONE},
+	[0x01] = {NONE, NONE, NONE, NONE},
+	[0x02] = {NONE, NONE, NONE, NONE},
+	[0x03] = {NONE, NONE, NONE, NONE},
+	[0x04] = {NONE, NONE, NONE, NONE},
+	[0x06] = {PCIE1, PCIE3, SGMII_TSEC1, PCIE2},
+	[0x07] = {PCIE1, PCIE3, SGMII_TSEC1, PCIE2},
+	[0x09] = {PCIE1, NONE, NONE, NONE},
+	[0x0a] = {PCIE1, PCIE3, SGMII_TSEC1, SGMII_TSEC2},
+	[0x0b] = {PCIE1, PCIE3, SGMII_TSEC1, SGMII_TSEC2},
+	[0x0d] = {PCIE1, PCIE1, SGMII_TSEC1, SGMII_TSEC2},
+	[0x0e] = {PCIE1, PCIE1, SGMII_TSEC1, SGMII_TSEC2},
+	[0x0f] = {PCIE1, PCIE1, SGMII_TSEC1, SGMII_TSEC2},
+	[0x15] = {PCIE1, PCIE3, PCIE2, PCIE2},
+	[0x16] = {PCIE1, PCIE3, PCIE2, PCIE2},
+	[0x17] = {PCIE1, PCIE3, PCIE2, PCIE2},
+	[0x18] = {PCIE1, PCIE1, PCIE2, PCIE2},
+	[0x19] = {PCIE1, PCIE1, PCIE2, PCIE2},
+	[0x1a] = {PCIE1, PCIE1, PCIE2, PCIE2},
+	[0x1b] = {PCIE1, PCIE1, PCIE2, PCIE2},
+	[0x1c] = {PCIE1, PCIE1, PCIE1, PCIE1},
+	[0x1d] = {PCIE1, PCIE1, PCIE2, PCIE2},
+	[0x1e] = {PCIE1, PCIE1, PCIE2, PCIE2},
+	[0x1f] = {PCIE1, PCIE1, PCIE2, PCIE2},
+};
+
+static const u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = {
+	[0x00] = {PCIE3, PCIE3},
+	[0x01] = {PCIE2, PCIE3},
+	[0x02] = {SATA1, SATA2},
+	[0x03] = {SGMII_TSEC1, SGMII_TSEC2},
+	[0x04] = {NONE, NONE},
+	[0x06] = {SATA1, SATA2},
+	[0x07] = {NONE, NONE},
+	[0x09] = {PCIE3, PCIE2},
+	[0x0a] = {SATA1, SATA2},
+	[0x0b] = {NONE, NONE},
+	[0x0d] = {PCIE3, PCIE2},
+	[0x0e] = {SATA1, SATA2},
+	[0x0f] = {NONE, NONE},
+	[0x15] = {SGMII_TSEC1, SGMII_TSEC2},
+	[0x16] = {SATA1, SATA2},
+	[0x17] = {NONE, NONE},
+	[0x18] = {PCIE3, PCIE3},
+	[0x19] = {SGMII_TSEC1, SGMII_TSEC2},
+	[0x1a] = {SATA1, SATA2},
+	[0x1b] = {NONE, NONE},
+	[0x1c] = {PCIE3, PCIE3},
+	[0x1d] = {SGMII_TSEC1, SGMII_TSEC2},
+	[0x1e] = {SATA1, SATA2},
+	[0x1f] = {NONE, NONE},
+};
+
+/*
+ * A list of PCI and SATA slots
+ */
+enum slot_id {
+	SLOT_PCIE1 = 1,
+	SLOT_PCIE2,
+	SLOT_PCIE3,
+	SLOT_PCIE4,
+	SLOT_PCIE5,
+	SLOT_SATA1,
+	SLOT_SATA2
+};
+
+/*
+ * This array maps the slot identifiers to their names on the P1022DS board.
+ */
+static const char *slot_names[] = {
+	[SLOT_PCIE1] = "Slot 1",
+	[SLOT_PCIE2] = "Slot 2",
+	[SLOT_PCIE3] = "Slot 3",
+	[SLOT_PCIE4] = "Slot 4",
+	[SLOT_PCIE5] = "Mini-PCIe",
+	[SLOT_SATA1] = "SATA 1",
+	[SLOT_SATA2] = "SATA 2",
+};
+
+/*
+ * This array maps a given SERDES configuration and SERDES device to the PCI or
+ * SATA slot that it connects to.  This mapping is hard-coded in the FPGA.
+ */
+static u8 serdes_dev_slot[][SATA2 + 1] = {
+	[0x01] = { [PCIE3] = SLOT_PCIE4, [PCIE2] = SLOT_PCIE5 },
+	[0x02] = { [SATA1] = SLOT_SATA1, [SATA2] = SLOT_SATA2 },
+	[0x09] = { [PCIE1] = SLOT_PCIE1, [PCIE3] = SLOT_PCIE4,
+		   [PCIE2] = SLOT_PCIE5 },
+	[0x16] = { [PCIE1] = SLOT_PCIE1, [PCIE3] = SLOT_PCIE2,
+		   [PCIE2] = SLOT_PCIE3,
+		   [SATA1] = SLOT_SATA1, [SATA2] = SLOT_SATA2 },
+	[0x17] = { [PCIE1] = SLOT_PCIE1, [PCIE3] = SLOT_PCIE2,
+		   [PCIE2] = SLOT_PCIE3 },
+	[0x1a] = { [PCIE1] = SLOT_PCIE1, [PCIE2] = SLOT_PCIE3,
+		   [PCIE2] = SLOT_PCIE3,
+		   [SATA1] = SLOT_SATA1, [SATA2] = SLOT_SATA2 },
+	[0x1c] = { [PCIE1] = SLOT_PCIE1,
+		   [SATA1] = SLOT_SATA1, [SATA2] = SLOT_SATA2 },
+	[0x1e] = { [PCIE1] = SLOT_PCIE1, [PCIE3] = SLOT_PCIE3 },
+	[0x1f] = { [PCIE1] = SLOT_PCIE1 },
+};
+
+int is_serdes_configured(enum srds_prtcl device)
+{
+	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;
+	unsigned int i;
+
+	debug("%s: dev = %d\n", __FUNCTION__, device);
+	debug("PORDEVSR[IO_SEL] = 0x%x\n", srds_cfg);
+
+	if (srds_cfg > ARRAY_SIZE(serdes1_cfg_tbl)) {
+		printf("Invalid PORDEVSR[IO_SEL] = %d\n", srds_cfg);
+		return 0;
+	}
+
+	for (i = 0; i < SRDS1_MAX_LANES; i++) {
+		if (serdes1_cfg_tbl[srds_cfg][i] == device)
+			return 1;
+		if (serdes2_cfg_tbl[srds_cfg][i] == device)
+			return 1;
+	}
+
+	return 0;
+}
+
+/*
+ * Returns the name of the slot to which the PCIe or SATA controller is
+ * connected
+ */
+const char *serdes_slot_name(enum srds_prtcl device)
+{
+	ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+	u32 pordevsr = in_be32(&gur->pordevsr);
+	unsigned int srds_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
+				MPC85xx_PORDEVSR_IO_SEL_SHIFT;
+	enum slot_id slot = serdes_dev_slot[srds_cfg][device];
+	const char *name = slot_names[slot];
+
+	if (name)
+		return name;
+	else
+		return "Nothing";
+}