powerpc/85xx: Add basic P1023RDS board support

The P1023 processor is an e500v2 based SoC that utilizes the DPAA
networking architecture.  This adds basic board support for non-DPAA
functionality (device tree, board file, etc).

Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

3 files changed, 169 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig
index b6976e1726e..6db02756196 100644
--- a/arch/powerpc/platforms/85xx/Kconfig
+++ b/arch/powerpc/platforms/85xx/Kconfig
@@ -75,6 +75,12 @@ config P1022_DS
 	help
 	  This option enables support for the Freescale P1022DS reference board.
 
+config P1023_RDS
+	bool "Freescale P1023 RDS"
+	select DEFAULT_UIMAGE
+	help
+	  This option enables support for the P1023 RDS board
+
 config SOCRATES
 	bool "Socrates"
 	select DEFAULT_UIMAGE
diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile
index dd70db77d63..5c08be5b602 100644
--- a/arch/powerpc/platforms/85xx/Makefile
+++ b/arch/powerpc/platforms/85xx/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_MPC85xx_DS)  += mpc85xx_ds.o
 obj-$(CONFIG_MPC85xx_MDS) += mpc85xx_mds.o
 obj-$(CONFIG_MPC85xx_RDB) += mpc85xx_rdb.o
 obj-$(CONFIG_P1022_DS)    += p1022_ds.o
+obj-$(CONFIG_P1023_RDS)   += p1023_rds.o
 obj-$(CONFIG_P3041_DS)    += p3041_ds.o corenet_ds.o
 obj-$(CONFIG_P4080_DS)    += p4080_ds.o corenet_ds.o
 obj-$(CONFIG_P5020_DS)    += p5020_ds.o corenet_ds.o
diff --git a/arch/powerpc/platforms/85xx/p1023_rds.c b/arch/powerpc/platforms/85xx/p1023_rds.c
new file mode 100644
index 00000000000..835e0b335bf
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/p1023_rds.c
@@ -0,0 +1,162 @@
+/*
+ * Copyright 2010-2011 Freescale Semiconductor, Inc.
+ *
+ * Author: Roy Zang <tie-fei.zang@freescale.com>
+ *
+ * Description:
+ * P1023 RDS Board Setup
+ *
+ * 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 <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/fsl_devices.h>
+#include <linux/of_platform.h>
+#include <linux/of_device.h>
+
+#include <asm/system.h>
+#include <asm/time.h>
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <mm/mmu_decl.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/mpic.h>
+
+#include <sysdev/fsl_soc.h>
+#include <sysdev/fsl_pci.h>
+
+/* ************************************************************************
+ *
+ * Setup the architecture
+ *
+ */
+#ifdef CONFIG_SMP
+void __init mpc85xx_smp_init(void);
+#endif
+
+static void __init mpc85xx_rds_setup_arch(void)
+{
+	struct device_node *np;
+
+	if (ppc_md.progress)
+		ppc_md.progress("p1023_rds_setup_arch()", 0);
+
+	/* Map BCSR area */
+	np = of_find_node_by_name(NULL, "bcsr");
+	if (np != NULL) {
+		static u8 __iomem *bcsr_regs;
+
+		bcsr_regs = of_iomap(np, 0);
+		of_node_put(np);
+
+		if (!bcsr_regs) {
+			printk(KERN_ERR
+			       "BCSR: Failed to map bcsr register space\n");
+			return;
+		} else {
+#define BCSR15_I2C_BUS0_SEG_CLR		0x07
+#define BCSR15_I2C_BUS0_SEG2		0x02
+/*
+ * Note: Accessing exclusively i2c devices.
+ *
+ * The i2c controller selects initially ID EEPROM in the u-boot;
+ * but if menu configuration selects RTC support in the kernel,
+ * the i2c controller switches to select RTC chip in the kernel.
+ */
+#ifdef CONFIG_RTC_CLASS
+			/* Enable RTC chip on the segment #2 of i2c */
+			clrbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG_CLR);
+			setbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG2);
+#endif
+
+			iounmap(bcsr_regs);
+		}
+	}
+
+#ifdef CONFIG_PCI
+	for_each_compatible_node(np, "pci", "fsl,p1023-pcie")
+		fsl_add_bridge(np, 0);
+#endif
+
+#ifdef CONFIG_SMP
+	mpc85xx_smp_init();
+#endif
+}
+
+static struct of_device_id p1023_ids[] = {
+	{ .type = "soc", },
+	{ .compatible = "soc", },
+	{ .compatible = "simple-bus", },
+	{},
+};
+
+
+static int __init p1023_publish_devices(void)
+{
+	of_platform_bus_probe(NULL, p1023_ids, NULL);
+
+	return 0;
+}
+
+machine_device_initcall(p1023_rds, p1023_publish_devices);
+
+static void __init mpc85xx_rds_pic_init(void)
+{
+	struct mpic *mpic;
+	struct resource r;
+	struct device_node *np = NULL;
+
+	np = of_find_node_by_type(NULL, "open-pic");
+	if (!np) {
+		printk(KERN_ERR "Could not find open-pic node\n");
+		return;
+	}
+
+	if (of_address_to_resource(np, 0, &r)) {
+		printk(KERN_ERR "Failed to map mpic register space\n");
+		of_node_put(np);
+		return;
+	}
+
+	mpic = mpic_alloc(np, r.start,
+		MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN |
+		MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU,
+		0, 256, " OpenPIC  ");
+
+	BUG_ON(mpic == NULL);
+	of_node_put(np);
+
+	mpic_init(mpic);
+}
+
+static int __init p1023_rds_probe(void)
+{
+	unsigned long root = of_get_flat_dt_root();
+
+	return of_flat_dt_is_compatible(root, "fsl,P1023RDS");
+
+}
+
+define_machine(p1023_rds) {
+	.name			= "P1023 RDS",
+	.probe			= p1023_rds_probe,
+	.setup_arch		= mpc85xx_rds_setup_arch,
+	.init_IRQ		= mpc85xx_rds_pic_init,
+	.get_irq		= mpic_get_irq,
+	.restart		= fsl_rstcr_restart,
+	.calibrate_decr		= generic_calibrate_decr,
+	.progress		= udbg_progress,
+#ifdef CONFIG_PCI
+	.pcibios_fixup_bus	= fsl_pcibios_fixup_bus,
+#endif
+};
+