[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>

2 files changed, 164 insertions, 1 deletions

diff --git a/arch/powerpc/platforms/52xx/Makefile b/arch/powerpc/platforms/52xx/Makefile
index b8f27a864069..a46184a0c750 100644
--- a/arch/powerpc/platforms/52xx/Makefile
+++ b/arch/powerpc/platforms/52xx/Makefile
@@ -5,4 +5,5 @@ ifeq ($(CONFIG_PPC_MERGE),y)
 obj-y                           += mpc52xx_pic.o mpc52xx_common.o
 endif
 
-obj-$(CONFIG_PPC_EFIKA) += efika-setup.o efika-pci.o
+obj-$(CONFIG_PPC_EFIKA)         += efika-setup.o efika-pci.o
+obj-$(CONFIG_PPC_LITE5200)      += lite5200.o
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,
+};