From 6b64253139a20b7db1f701a9117bc5174eb878bc Mon Sep 17 00:00:00 2001
From: Grant Likely <grant.likely@secretlab.ca>
Date: Mon, 27 Nov 2006 14:16:28 -0700
Subject: [POWERPC] Add lite5200 board support to arch/powerpc

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
 arch/powerpc/platforms/52xx/lite5200.c | 162 +++++++++++++++++++++++++++++++++
 1 file changed, 162 insertions(+)
 create mode 100644 arch/powerpc/platforms/52xx/lite5200.c

(limited to 'arch/powerpc/platforms/52xx/lite5200.c')

diff --git a/arch/powerpc/platforms/52xx/lite5200.c b/arch/powerpc/platforms/52xx/lite5200.c
new file mode 100644
index 000000000000..a375c15b4315
--- /dev/null
+++ b/arch/powerpc/platforms/52xx/lite5200.c
@@ -0,0 +1,162 @@
+/*
+ * Freescale Lite5200 board support
+ *
+ * Written by: Grant Likely <grant.likely@secretlab.ca>
+ *
+ * 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/qe.h>
+#include <asm/qe_ic.h>
+#include <asm/of_platform.h>
+
+#include <asm/mpc52xx.h>
+
+/* ************************************************************************
+ *
+ * Setup the architecture
+ *
+ */
+
+static void __init
+lite52xx_setup_cpu(void)
+{
+	struct mpc52xx_gpio __iomem *gpio;
+	u32 port_config;
+
+	/* Map zones */
+	gpio = mpc52xx_find_and_map("mpc52xx-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	*/
+
+	port_config &= ~0x03000000;	/* ATA CS is on csb_4/5		*/
+	port_config |=  0x01000000;
+
+	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 lite52xx_setup_arch(void)
+{
+	struct device_node *np;
+
+	if (ppc_md.progress)
+		ppc_md.progress("lite52xx_setup_arch()", 0);
+
+	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 */
+	lite52xx_setup_cpu();	/* Platorm specific */
+
+#ifdef CONFIG_BLK_DEV_INITRD
+	if (initrd_start)
+		ROOT_DEV = Root_RAM0;
+	else
+#endif
+#ifdef  CONFIG_ROOT_NFS
+		ROOT_DEV = Root_NFS;
+#else
+		ROOT_DEV = Root_HDA1;
+#endif
+
+}
+
+void lite52xx_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 lite52xx_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, "lite52xx"))
+		return 0;
+	pr_debug("%s board w/ mpc52xx found\n", model ? model : "unknown");
+
+	return 1;
+}
+
+define_machine(lite52xx) {
+	.name 		= "lite52xx",
+	.probe 		= lite52xx_probe,
+	.setup_arch 	= lite52xx_setup_arch,
+	.init_IRQ 	= mpc52xx_init_irq,
+	.get_irq 	= mpc52xx_get_irq,
+	.show_cpuinfo	= lite52xx_show_cpuinfo,
+	.calibrate_decr	= generic_calibrate_decr,
+};
-- 
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