Subject: [PATCH 06/15] [POWERPC] CM5200 board support

From: Marian Balakowicz <[email-masked]>
Date: Sun, 07 Oct 2007 13:24:18 +0200

Add arch/powerpc board support for CM5200.

Signed-off-by Marian Balakowicz <[email-masked]>
Signed-off-by: Jan Wrobel <[email-masked]>
---

 Kconfig  |    5 +
 Makefile |    1 
 cm5200.c |  161 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 167 insertions(+)

diff --git a/arch/powerpc/platforms/52xx/Kconfig b/arch/powerpc/platforms/52xx/Kconfig
index 7c828eb..ec952e4 100644
--- a/arch/powerpc/platforms/52xx/Kconfig
+++ b/arch/powerpc/platforms/52xx/Kconfig
@@ -39,3 +39,8 @@ config PPC_TQM5200
  	select PPC_MPC5200
  	default n
 
+config PPC_CM5200
+	bool "Schindler CM5200 Boards"
+	depends on PPC_MULTIPLATFORM && PPC32
+	select PPC_MPC5200
+	default n
diff --git a/arch/powerpc/platforms/52xx/Makefile b/arch/powerpc/platforms/52xx/Makefile
index 4997ebf..5b4adfb 100644
--- a/arch/powerpc/platforms/52xx/Makefile
+++ b/arch/powerpc/platforms/52xx/Makefile
@@ -9,5 +9,6 @@ endif
 obj-$(CONFIG_PPC_EFIKA)		+= efika.o
 obj-$(CONFIG_PPC_LITE5200)	+= lite5200.o
 obj-$(CONFIG_PPC_TQM5200)	+= tqm5200.o
+obj-$(CONFIG_PPC_CM5200)	+= cm5200.o
 
 obj-$(CONFIG_PM)		+= mpc52xx_sleep.o mpc52xx_pm.o
diff --git a/arch/powerpc/platforms/52xx/cm5200.c b/arch/powerpc/platforms/52xx/cm5200.c
new file mode 100644
index 0000000..9d3b1f2
--- /dev/null
+++ b/arch/powerpc/platforms/52xx/cm5200.c
@@ -0,0 +1,161 @@
+/*
+ * Schindler CM5200 board support
+ *
+ * Written by: Grant Likely <[email-masked]>
+ * Adapted for CM5200 by: Jan Wrobel <[email-masked]>
+ *
+ * Copyright (C) Secret Lab Technologies Ltd. 2006. All rights reserved.
+ * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights reserved.
+ *
+ * Description:
+ * 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.
+ */
+
+#undef DEBUG
+
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/reboot.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/major.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/seq_file.h>
+#include <linux/root_dev.h>
+#include <linux/initrd.h>
+
+#include <asm/system.h>
+#include <asm/atomic.h>
+#include <asm/time.h>
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/ipic.h>
+#include <asm/bootinfo.h>
+#include <asm/irq.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <sysdev/fsl_soc.h>
+#include <asm/of_platform.h>
+
+#include <asm/mpc52xx.h>
+
+/* ************************************************************************
+ *
+ * Setup the architecture
+ *
+ */
+static void __init cm5200_setup_cpu(void)
+{
+	struct mpc52xx_gpio __iomem *gpio;
+	u32 port_config;
+
+	/* Map zones */
+	gpio = mpc52xx_find_and_map("mpc5200-gpio");
+	if (!gpio) {
+		printk(KERN_ERR __FILE__ ": "
+			"Error while mapping GPIO register for port config. "
+			"Expect some abnormal behavior\n");
+		goto error;
+	}
+
+	/* Set port config */
+	port_config = in_be32(&gpio->port_config);
+
+	port_config &= ~0x00800000;	/* 48Mhz internal, pin is GPIO	*/
+
+	port_config &= ~0x00007000;	/* USB port : Differential mode	*/
+	port_config |=  0x00001000;	/*            USB 1 only	*/
+
+	pr_debug("port_config: old:%x new:%x\n",
+			in_be32(&gpio->port_config), port_config);
+
+	out_be32(&gpio->port_config, port_config);
+
+	/* Unmap zone */
+error:
+	iounmap(gpio);
+}
+
+static void __init cm5200_setup_arch(void)
+{
+	struct device_node *np;
+
+	np = of_find_node_by_type(NULL, "cpu");
+	if (np) {
+		unsigned int *fp =
+		    (int *)get_property(np, "clock-frequency", NULL);
+		if (fp != 0)
+			loops_per_jiffy = *fp / HZ;
+		else
+			loops_per_jiffy = 50000000 / HZ;
+		of_node_put(np);
+	}
+
+	/* CPU & Port mux setup */
+	mpc52xx_setup_cpu();	/* Generic */
+	cm5200_setup_cpu();	/* Platorm specific */
+
+#ifdef CONFIG_BLK_DEV_INITRD
+	if (initrd_start)
+		/*
+		 * We want the proper initrd behavior, i.e., launching of
+		 * /linuxrc from the initial root file system, and not only
+		 * mounting it as the normal root file system.
+		 */
+		ROOT_DEV = 0x0;
+	else
+#endif
+
+#ifdef  CONFIG_ROOT_NFS
+		ROOT_DEV = Root_NFS;
+#else
+		ROOT_DEV = Root_HDA1;
+#endif
+
+}
+
+void cm5200_show_cpuinfo(struct seq_file *m)
+{
+	struct device_node* np = of_find_all_nodes(NULL);
+	const char *model = NULL;
+
+	if (np)
+		model = get_property(np, "model", NULL);
+
+	seq_printf(m, "vendor\t\t:	Freescale Semiconductor\n");
+	seq_printf(m, "machine\t\t:	%s\n", model ? model : "unknown");
+
+	of_node_put(np);
+}
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init cm5200_probe(void)
+{
+	unsigned long node = of_get_flat_dt_root();
+	const char *model = of_get_flat_dt_prop(node, "model", NULL);
+
+	if (!of_flat_dt_is_compatible(node, "fsl,cm5200"))
+		return 0;
+	pr_debug("%s board found\n", model ? model : "unknown");
+
+	return 1;
+}
+
+define_machine(cm5200) {
+	.name		= "cm5200",
+	.probe		= cm5200_probe,
+	.setup_arch	= cm5200_setup_arch,
+	.init		= mpc52xx_declare_of_platform_devices,
+	.init_IRQ	= mpc52xx_init_irq,
+	.get_irq	= mpc52xx_get_irq,
+	.show_cpuinfo	= cm5200_show_cpuinfo,
+	.calibrate_decr	= generic_calibrate_decr,
+};