powerpc/t2080rdb: Add T2080PCIe-RDB board support

T2080PCIe-RDB is a Freescale Reference Design Board that hosts the T2080 SoC.
It works in two mode: standalone mode and PCIe endpoint mode.

T2080PCIe-RDB Feature Overview
------------------------------
Processor:
 - T2080 SoC integrating four 64-bit dual-threads e6500 cores up to 1.8GHz
DDR Memory:
 - Single memory controller capable of supporting DDR3 and DDR3-LP devices
 - 72bit 4GB DDR3-LP SODIMM in slot
Ethernet interfaces:
 - Two 10M/100M/1G RGMII ports on-board
 - Two 10Gbps SFP+ ports on-board
 - Two 10Gbps Base-T ports on-board
Accelerator:
 - DPAA components consist of FMan, BMan, QMan, PME, DCE and SEC
SerDes 16 lanes configuration:
 - SerDes-1 Lane A-B: to two 10G XFI fiber (MAC9 & MAC10)
 - SerDes-1 Lane C-D: to two 10G Base-T (MAC1 & MAC2)
 - SerDes-1 Lane E-H: to PCIe Goldfinger (PCIe4 x4, Gen3)
 - SerDes-2 Lane A-D: to PCIe Slot (PCIe1 x4, Gen2)
 - SerDes-2 Lane E-F: to C293 secure co-processor (PCIe2 x2)
 - SerDes-2 Lane G-H: to SATA1 & SATA2
IFC/Local Bus:
 - NOR:  128MB 16-bit NOR flash
 - NAND: 512MB 8-bit NAND flash
 - CPLD: for system controlling with programable header on-board
eSPI:
 - 64MB N25Q512 SPI flash
USB:
 - Two USB2.0 ports with internal PHY (both Type-A)
PCIe:
 - One PCIe x4 gold-finger
 - One PCIe x4 connector
 - One PCIe x2 end-point device (C293 Crypto co-processor)
SATA:
 - Two SATA 2.0 ports on-board
SDHC:
 - support a TF-card on-board
I2C:
 - Four I2C controllers.
UART:
 - Dual 4-pins UART serial ports

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/board/freescale/t208xrdb/cpld.c b/board/freescale/t208xrdb/cpld.c
new file mode 100644
index 0000000..4aa126b
--- /dev/null
+++ b/board/freescale/t208xrdb/cpld.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2014 Freescale Semiconductor
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ * Freescale T2080RDB board-specific CPLD controlling supports.
+ */
+
+#include <common.h>
+#include <command.h>
+#include "cpld.h"
+
+u8 cpld_read(unsigned int reg)
+{
+	void *p = (void *)CONFIG_SYS_CPLD_BASE;
+
+	return in_8(p + reg);
+}
+
+void cpld_write(unsigned int reg, u8 value)
+{
+	void *p = (void *)CONFIG_SYS_CPLD_BASE;
+
+	out_8(p + reg, value);
+}
+
+/* Set the boot bank to the alternate bank */
+void cpld_set_altbank(void)
+{
+	u8 reg = CPLD_READ(flash_csr);
+
+	reg = (reg & ~CPLD_BANK_SEL_MASK) | CPLD_LBMAP_ALTBANK;
+	CPLD_WRITE(flash_csr, reg);
+	CPLD_WRITE(reset_ctl, CPLD_LBMAP_RESET);
+}
+
+/* Set the boot bank to the default bank */
+void cpld_set_defbank(void)
+{
+	u8 reg = CPLD_READ(flash_csr);
+
+	reg = (reg & ~CPLD_BANK_SEL_MASK) | CPLD_LBMAP_DFLTBANK;
+	CPLD_WRITE(flash_csr, reg);
+	CPLD_WRITE(reset_ctl, CPLD_LBMAP_RESET);
+}
+
+int do_cpld(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	int rc = 0;
+
+	if (argc <= 1)
+		return cmd_usage(cmdtp);
+
+	if (strcmp(argv[1], "reset") == 0) {
+		if (strcmp(argv[2], "altbank") == 0)
+			cpld_set_altbank();
+		else
+			cpld_set_defbank();
+	} else {
+		rc = cmd_usage(cmdtp);
+	}
+
+	return rc;
+}
+
+U_BOOT_CMD(
+	cpld, CONFIG_SYS_MAXARGS, 1, do_cpld,
+	"Reset the board or alternate bank",
+	"reset: reset to default bank\n"
+	"cpld reset altbank: reset to alternate bank\n"
+);