MIPS: Netlogic: Split XLP device tree code to dt.c

Create new flle arch/mips/netlogic/xlp/dt.c and move the device
tree related code there.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5422/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

4 files changed, 105 insertions, 70 deletions

diff --git a/arch/mips/include/asm/netlogic/xlp-hal/xlp.h b/arch/mips/include/asm/netlogic/xlp-hal/xlp.h
index 7e47209327a5..f4ea0f7f3965 100644
--- a/arch/mips/include/asm/netlogic/xlp-hal/xlp.h
+++ b/arch/mips/include/asm/netlogic/xlp-hal/xlp.h
@@ -59,6 +59,7 @@ void xlp_wakeup_secondary_cpus(void);
 
 void xlp_mmu_init(void);
 void nlm_hal_init(void);
+void *xlp_dt_init(void *fdtp);
 
 #endif /* !__ASSEMBLY__ */
 #endif /* _ASM_NLM_XLP_H */
diff --git a/arch/mips/netlogic/xlp/Makefile b/arch/mips/netlogic/xlp/Makefile
index e8dd14c38cb6..85ac4a892ced 100644
--- a/arch/mips/netlogic/xlp/Makefile
+++ b/arch/mips/netlogic/xlp/Makefile
@@ -1,3 +1,3 @@
-obj-y                           += setup.o nlm_hal.o cop2-ex.o
+obj-y                           += setup.o nlm_hal.o cop2-ex.o dt.o
 obj-$(CONFIG_SMP)               += wakeup.o
 obj-$(CONFIG_USB)               += usb-init.o
diff --git a/arch/mips/netlogic/xlp/dt.c b/arch/mips/netlogic/xlp/dt.c
new file mode 100644
index 000000000000..a15cdbb8d0bd
--- /dev/null
+++ b/arch/mips/netlogic/xlp/dt.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright 2003-2013 Broadcom Corporation.
+ * All Rights Reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the Broadcom
+ * license below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/bootmem.h>
+
+#include <linux/of_fdt.h>
+#include <linux/of_platform.h>
+#include <linux/of_device.h>
+
+extern u32 __dtb_xlp_evp_begin[], __dtb_xlp_svp_begin[], __dtb_start[];
+
+void __init *xlp_dt_init(void *fdtp)
+{
+        if (!fdtp) {
+                switch (current_cpu_data.processor_id & 0xff00) {
+#ifdef CONFIG_DT_XLP_SVP
+                case PRID_IMP_NETLOGIC_XLP3XX:
+                        fdtp = __dtb_xlp_svp_begin;
+                        break;
+#endif
+#ifdef CONFIG_DT_XLP_EVP
+                case PRID_IMP_NETLOGIC_XLP8XX:
+                        fdtp = __dtb_xlp_evp_begin;
+                        break;
+#endif
+                default:
+                        /* Pick a built-in if any, and hope for the best */
+                        fdtp = __dtb_start;
+                        break;
+                }
+        }
+        initial_boot_params = fdtp;
+        return fdtp;
+}
+
+void __init device_tree_init(void)
+{
+        unsigned long base, size;
+
+        if (!initial_boot_params)
+                return;
+
+        base = virt_to_phys((void *)initial_boot_params);
+        size = be32_to_cpu(initial_boot_params->totalsize);
+
+        /* Before we do anything, lets reserve the dt blob */
+        reserve_bootmem(base, size, BOOTMEM_DEFAULT);
+
+        unflatten_device_tree();
+
+        /* free the space reserved for the dt blob */
+        free_bootmem(base, size);
+}
+
+static struct of_device_id __initdata xlp_ids[] = {
+        { .compatible = "simple-bus", },
+        {},
+};
+
+int __init xlp8xx_ds_publish_devices(void)
+{
+        if (!of_have_populated_dt())
+                return 0;
+        return of_platform_bus_probe(NULL, xlp_ids, NULL);
+}
+
+device_initcall(xlp8xx_ds_publish_devices);
diff --git a/arch/mips/netlogic/xlp/setup.c b/arch/mips/netlogic/xlp/setup.c
index eaa99d28cb8e..7b6694998cdc 100644
--- a/arch/mips/netlogic/xlp/setup.c
+++ b/arch/mips/netlogic/xlp/setup.c
@@ -33,19 +33,13 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/serial_8250.h>
-#include <linux/pm.h>
-#include <linux/bootmem.h>
+#include <linux/of_fdt.h>
 
 #include <asm/idle.h>
 #include <asm/reboot.h>
 #include <asm/time.h>
 #include <asm/bootinfo.h>
 
-#include <linux/of_fdt.h>
-#include <linux/of_platform.h>
-#include <linux/of_device.h>
-
 #include <asm/netlogic/haldefs.h>
 #include <asm/netlogic/common.h>
 
@@ -57,7 +51,6 @@ uint64_t nlm_io_base;
 struct nlm_soc_info nlm_nodes[NLM_NR_NODES];
 cpumask_t nlm_cpumask = CPU_MASK_CPU0;
 unsigned int nlm_threads_per_core;
-extern u32 __dtb_xlp_evp_begin[], __dtb_xlp_svp_begin[], __dtb_start[];
 
 static void nlm_linux_exit(void)
 {
@@ -70,39 +63,13 @@ static void nlm_linux_exit(void)
 
 void __init plat_mem_setup(void)
 {
-        void *fdtp;
-
         panic_timeout   = 5;
         _machine_restart = (void (*)(char *))nlm_linux_exit;
         _machine_halt   = nlm_linux_exit;
         pm_power_off    = nlm_linux_exit;
 
-        /*
-         * If no FDT pointer is passed in, use the built-in FDT.
-         * device_tree_init() does not handle CKSEG0 pointers in
-         * 64-bit, so convert pointer.
-         */
-        fdtp = (void *)(long)fw_arg0;
-        if (!fdtp) {
-                switch (current_cpu_data.processor_id & 0xff00) {
-#ifdef CONFIG_DT_XLP_SVP
-                case PRID_IMP_NETLOGIC_XLP3XX:
-                        fdtp = __dtb_xlp_svp_begin;
-                        break;
-#endif
-#ifdef CONFIG_DT_XLP_EVP
-                case PRID_IMP_NETLOGIC_XLP8XX:
-                        fdtp = __dtb_xlp_evp_begin;
-                        break;
-#endif
-                default:
-                        /* Pick a built-in if any, and hope for the best */
-                        fdtp = __dtb_start;
-                        break;
-                }
-        }
-        fdtp = phys_to_virt(__pa(fdtp));
-        early_init_devtree(fdtp);
+        /* memory and bootargs from DT */
+        early_init_devtree(initial_boot_params);
 }
 
 const char *get_system_type(void)
@@ -134,6 +101,7 @@ void __init prom_init(void)
         nlm_io_base = CKSEG1ADDR(XLP_DEFAULT_IO_BASE);
         xlp_mmu_init();
         nlm_node_init(0);
+        xlp_dt_init((void *)(long)fw_arg0);
 
 #ifdef CONFIG_SMP
         cpumask_setall(&nlm_cpumask);
@@ -145,36 +113,3 @@ void __init prom_init(void)
         register_smp_ops(&nlm_smp_ops);
 #endif
 }
-
-void __init device_tree_init(void)
-{
-        unsigned long base, size;
-
-        if (!initial_boot_params)
-                return;
-
-        base = virt_to_phys((void *)initial_boot_params);
-        size = be32_to_cpu(initial_boot_params->totalsize);
-
-        /* Before we do anything, lets reserve the dt blob */
-        reserve_bootmem(base, size, BOOTMEM_DEFAULT);
-
-        unflatten_device_tree();
-
-        /* free the space reserved for the dt blob */
-        free_bootmem(base, size);
-}
-
-static struct of_device_id __initdata xlp_ids[] = {
-        { .compatible = "simple-bus", },
-        {},
-};
-
-int __init xlp8xx_ds_publish_devices(void)
-{
-        if (!of_have_populated_dt())
-                return 0;
-        return of_platform_bus_probe(NULL, xlp_ids, NULL);
-}
-
-device_initcall(xlp8xx_ds_publish_devices);