6 files changed, 68 insertions, 99 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 4dbfa738b7ea..559c5fc8645c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2288,6 +2288,8 @@ S:	Maintained
 LINUX FOR POWERPC EMBEDDED MPC52XX
 P:      Sylvain Munaut
 M:      tnt@246tNt.com
+P:      Grant Likely
+M:      grant.likely@secretlab.ca
 W:      http://www.246tNt.com/mpc52xx/
 W:      http://www.penguinppc.org/
 L:      linuxppc-dev@ozlabs.org
diff --git a/arch/powerpc/platforms/52xx/efika.c b/arch/powerpc/platforms/52xx/efika.c
index 0b1e60a010ba..a0da70c8b502 100644
--- a/arch/powerpc/platforms/52xx/efika.c
+++ b/arch/powerpc/platforms/52xx/efika.c
@@ -9,33 +9,16 @@
  * kind, whether express or implied.
  */
 
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/reboot.h>
 #include <linux/init.h>
 #include <linux/utsrelease.h>
-#include <linux/seq_file.h>
-#include <linux/string.h>
-#include <linux/root_dev.h>
-#include <linux/initrd.h>
-#include <linux/timer.h>
 #include <linux/pci.h>
-
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/sections.h>
-#include <asm/pci-bridge.h>
-#include <asm/pgtable.h>
+#include <linux/of.h>
 #include <asm/prom.h>
 #include <asm/time.h>
 #include <asm/machdep.h>
 #include <asm/rtas.h>
-#include <asm/of_device.h>
-#include <asm/of_platform.h>
 #include <asm/mpc52xx.h>
 
-
 #define EFIKA_PLATFORM_NAME "Efika"
 
 
diff --git a/arch/powerpc/platforms/52xx/lite5200.c b/arch/powerpc/platforms/52xx/lite5200.c
index e11d27f9c4f0..0caa3d955c3b 100644
--- a/arch/powerpc/platforms/52xx/lite5200.c
+++ b/arch/powerpc/platforms/52xx/lite5200.c
@@ -15,32 +15,13 @@
 
 #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 <linux/of.h>
 #include <asm/time.h>
 #include <asm/io.h>
 #include <asm/machdep.h>
-#include <asm/ipic.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>
 
 /* ************************************************************************
@@ -49,19 +30,56 @@
  *
  */
 
+/*
+ * Fix clock configuration.
+ *
+ * Firmware is supposed to be responsible for this.  If you are creating a
+ * new board port, do *NOT* duplicate this code.  Fix your boot firmware
+ * to set it correctly in the first place
+ */
 static void __init
-lite5200_setup_cpu(void)
+lite5200_fix_clock_config(void)
+{
+        struct mpc52xx_cdm  __iomem *cdm;
+
+        /* Map zones */
+        cdm = mpc52xx_find_and_map("mpc5200-cdm");
+        if (!cdm) {
+                printk(KERN_ERR "%s() failed; expect abnormal behaviour\n",
+                       __FUNCTION__);
+                return;
+        }
+
+        /* Use internal 48 Mhz */
+        out_8(&cdm->ext_48mhz_en, 0x00);
+        out_8(&cdm->fd_enable, 0x01);
+        if (in_be32(&cdm->rstcfg) & 0x40)       /* Assumes 33Mhz clock */
+                out_be16(&cdm->fd_counters, 0x0001);
+        else
+                out_be16(&cdm->fd_counters, 0x5555);
+
+        /* Unmap the regs */
+        iounmap(cdm);
+}
+
+/*
+ * Fix setting of port_config register.
+ *
+ * Firmware is supposed to be responsible for this.  If you are creating a
+ * new board port, do *NOT* duplicate this code.  Fix your boot firmware
+ * to set it correctly in the first place
+ */
+static void __init
+lite5200_fix_port_config(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;
+                printk(KERN_ERR "%s() failed. expect abnormal behavior\n",
+                       __FUNCTION__);
+                return;
         }
 
         /* Set port config */
@@ -80,7 +98,6 @@ lite5200_setup_cpu(void)
         out_be32(&gpio->port_config, port_config);
 
         /* Unmap zone */
-error:
         iounmap(gpio);
 }
 
@@ -119,9 +136,12 @@ static void __init lite5200_setup_arch(void)
         if (ppc_md.progress)
                 ppc_md.progress("lite5200_setup_arch()", 0);
 
-        /* CPU & Port mux setup */
-        mpc52xx_setup_cpu();    /* Generic */
-        lite5200_setup_cpu();   /* Platorm specific */
+        /* Fix things that firmware should have done. */
+        lite5200_fix_clock_config();
+        lite5200_fix_port_config();
+
+        /* Some mpc5200 & mpc5200b related configuration */
+        mpc5200_setup_xlb_arbiter();
 
 #ifdef CONFIG_PM
         mpc52xx_suspend.board_suspend_prepare = lite5200_suspend_prepare;
@@ -150,20 +170,6 @@ static void __init lite5200_setup_arch(void)
 
 }
 
-static void lite5200_show_cpuinfo(struct seq_file *m)
-{
-        struct device_node* np = of_find_all_nodes(NULL);
-        const char *model = NULL;
-
-        if (np)
-                model = of_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
  */
@@ -187,6 +193,5 @@ define_machine(lite5200) {
         .init           = mpc52xx_declare_of_platform_devices,
         .init_IRQ       = mpc52xx_init_irq,
         .get_irq        = mpc52xx_get_irq,
-        .show_cpuinfo   = lite5200_show_cpuinfo,
         .calibrate_decr = generic_calibrate_decr,
 };
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_common.c b/arch/powerpc/platforms/52xx/mpc52xx_common.c
index 2dd415ff55a9..3bc201e07e6b 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_common.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_common.c
@@ -13,10 +13,9 @@
 #undef DEBUG
 
 #include <linux/kernel.h>
-
+#include <linux/of_platform.h>
 #include <asm/io.h>
 #include <asm/prom.h>
-#include <asm/of_platform.h>
 #include <asm/mpc52xx.h>
 
 
@@ -76,44 +75,33 @@ mpc52xx_find_ipb_freq(struct device_node *node)
 EXPORT_SYMBOL(mpc52xx_find_ipb_freq);
 
 
+/*
+ * Configure the XLB arbiter settings to match what Linux expects.
+ */
 void __init
-mpc52xx_setup_cpu(void)
+mpc5200_setup_xlb_arbiter(void)
 {
-        struct mpc52xx_cdm  __iomem *cdm;
         struct mpc52xx_xlb  __iomem *xlb;
 
-        /* Map zones */
-        cdm = mpc52xx_find_and_map("mpc5200-cdm");
         xlb = mpc52xx_find_and_map("mpc5200-xlb");
-
-        if (!cdm || !xlb) {
+        if (!xlb) {
                 printk(KERN_ERR __FILE__ ": "
-                        "Error while mapping CDM/XLB during mpc52xx_setup_cpu. "
+                        "Error mapping XLB in mpc52xx_setup_cpu().  "
                         "Expect some abnormal behavior\n");
-                goto unmap_regs;
+                return;
         }
 
-        /* Use internal 48 Mhz */
-        out_8(&cdm->ext_48mhz_en, 0x00);
-        out_8(&cdm->fd_enable, 0x01);
-        if (in_be32(&cdm->rstcfg) & 0x40)       /* Assumes 33Mhz clock */
-                out_be16(&cdm->fd_counters, 0x0001);
-        else
-                out_be16(&cdm->fd_counters, 0x5555);
-
         /* Configure the XLB Arbiter priorities */
         out_be32(&xlb->master_pri_enable, 0xff);
         out_be32(&xlb->master_priority, 0x11111111);
 
-        /* Disable XLB pipelining */
-        /* (cfr errate 292. We could do this only just before ATA PIO
-            transaction and re-enable it afterwards ...) */
+        /* Disable XLB pipelining
+         * (cfr errate 292. We could do this only just before ATA PIO
+         *  transaction and re-enable it afterwards ...)
+         */
         out_be32(&xlb->config, in_be32(&xlb->config) | MPC52xx_XLB_CFG_PLDIS);
 
-        /* Unmap zones */
-unmap_regs:
-        if (cdm) iounmap(cdm);
-        if (xlb) iounmap(xlb);
+        iounmap(xlb);
 }
 
 void __init
diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pic.c b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
index 0f4ca8a2b777..61100f270c68 100644
--- a/arch/powerpc/platforms/52xx/mpc52xx_pic.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
@@ -18,18 +18,9 @@
 
 #undef DEBUG
 
-#include <linux/stddef.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/delay.h>
 #include <linux/irq.h>
-#include <linux/hardirq.h>
-
+#include <linux/of.h>
 #include <asm/io.h>
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/irq.h>
 #include <asm/prom.h>
 #include <asm/mpc52xx.h>
 #include "mpc52xx_pic.h"
diff --git a/include/asm-powerpc/mpc52xx.h b/include/asm-powerpc/mpc52xx.h
index 1a3dbb743a3f..24751df791ac 100644
--- a/include/asm-powerpc/mpc52xx.h
+++ b/include/asm-powerpc/mpc52xx.h
@@ -243,7 +243,7 @@ struct mpc52xx_cdm {
 
 extern void __iomem * mpc52xx_find_and_map(const char *);
 extern unsigned int mpc52xx_find_ipb_freq(struct device_node *node);
-extern void mpc52xx_setup_cpu(void);
+extern void mpc5200_setup_xlb_arbiter(void);
 extern void mpc52xx_declare_of_platform_devices(void);
 
 extern void mpc52xx_init_irq(void);