This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / 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 (file)
index 0000000..0f21bab
--- /dev/null
+++ b/arch/powerpc/platforms/52xx/lite5200.c
@@ -0,0 +1,161 @@
+/*
+ * 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/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           = mpc52xx_declare_of_platform_devices,
+       .init_IRQ       = mpc52xx_init_irq,
+       .get_irq        = mpc52xx_get_irq,
+       .show_cpuinfo   = lite52xx_show_cpuinfo,
+       .calibrate_decr = generic_calibrate_decr,
+};