Merge tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree updates from Rob Herring:
 "DeviceTree updates for 3.13.  This is a bit larger pull request than
  usual for this cycle with lots of clean-up.

   - Cross arch clean-up and consolidation of early DT scanning code.
   - Clean-up and removal of arch prom.h headers.  Makes arch specific
     prom.h optional on all but Sparc.
   - Addition of interrupts-extended property for devices connected to
     multiple interrupt controllers.
   - Refactoring of DT interrupt parsing code in preparation for
     deferred probe of interrupts.
   - ARM cpu and cpu topology bindings documentation.
   - Various DT vendor binding documentation updates"

* tag 'devicetree-for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (82 commits)
  powerpc: add missing explicit OF includes for ppc
  dt/irq: add empty of_irq_count for !OF_IRQ
  dt: disable self-tests for !OF_IRQ
  of: irq: Fix interrupt-map entry matching
  MIPS: Netlogic: replace early_init_devtree() call
  of: Add Panasonic Corporation vendor prefix
  of: Add Chunghwa Picture Tubes Ltd. vendor prefix
  of: Add AU Optronics Corporation vendor prefix
  of/irq: Fix potential buffer overflow
  of/irq: Fix bug in interrupt parsing refactor.
  of: set dma_mask to point to coherent_dma_mask
  of: add vendor prefix for PHYTEC Messtechnik GmbH
  DT: sort vendor-prefixes.txt
  of: Add vendor prefix for Cadence
  of: Add empty for_each_available_child_of_node() macro definition
  arm/versatile: Fix versatile irq specifications.
  of/irq: create interrupts-extended property
  microblaze/pci: Drop PowerPC-ism from irq parsing
  of/irq: Create of_irq_parse_and_map_pci() to consolidate arch code.
  of/irq: Use irq_of_parse_and_map()
  ...

1 files changed, 14 insertions, 41 deletions

diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 946fb8d06c8b..6e2b6638122d 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -21,11 +21,8 @@
 #include <linux/screen_info.h>
 #include <linux/bootmem.h>
 #include <linux/kernel.h>
-
-#ifdef CONFIG_OF
 #include <linux/of_fdt.h>
 #include <linux/of_platform.h>
-#endif
 
 #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
 # include <linux/console.h>
@@ -64,8 +61,8 @@ extern struct rtc_ops no_rtc_ops;
 struct rtc_ops *rtc_ops;
 
 #ifdef CONFIG_BLK_DEV_INITRD
-extern void *initrd_start;
-extern void *initrd_end;
+extern unsigned long initrd_start;
+extern unsigned long initrd_end;
 int initrd_is_mapped = 0;
 extern int initrd_below_start_ok;
 #endif
@@ -152,8 +149,8 @@ static int __init parse_tag_initrd(const bp_tag_t* tag)
 {
         meminfo_t* mi;
         mi = (meminfo_t*)(tag->data);
-        initrd_start = __va(mi->start);
-        initrd_end = __va(mi->end);
+        initrd_start = (unsigned long)__va(mi->start);
+        initrd_end = (unsigned long)__va(mi->end);
 
         return 0;
 }
@@ -170,13 +167,6 @@ static int __init parse_tag_fdt(const bp_tag_t *tag)
 
 __tagtable(BP_TAG_FDT, parse_tag_fdt);
 
-void __init early_init_dt_setup_initrd_arch(u64 start, u64 end)
-{
-        initrd_start = (void *)__va(start);
-        initrd_end = (void *)__va(end);
-        initrd_below_start_ok = 1;
-}
-
 #endif /* CONFIG_OF */
 
 #endif /* CONFIG_BLK_DEV_INITRD */
@@ -222,9 +212,13 @@ static int __init parse_bootparam(const bp_tag_t* tag)
 }
 
 #ifdef CONFIG_OF
+bool __initdata dt_memory_scan = false;
 
 void __init early_init_dt_add_memory_arch(u64 base, u64 size)
 {
+        if (!dt_memory_scan)
+                return;
+
         size &= PAGE_MASK;
         add_sysmem_bank(MEMORY_TYPE_CONVENTIONAL, base, base + size);
 }
@@ -236,31 +230,13 @@ void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
 
 void __init early_init_devtree(void *params)
 {
-        /* Setup flat device-tree pointer */
-        initial_boot_params = params;
-
-        /* Retrieve various informations from the /chosen node of the
-         * device-tree, including the platform type, initrd location and
-         * size, TCE reserve, and more ...
-         */
-        if (!command_line[0])
-                of_scan_flat_dt(early_init_dt_scan_chosen, command_line);
-
-        /* Scan memory nodes and rebuild MEMBLOCKs */
-        of_scan_flat_dt(early_init_dt_scan_root, NULL);
         if (sysmem.nr_banks == 0)
-                of_scan_flat_dt(early_init_dt_scan_memory, NULL);
-}
+                dt_memory_scan = true;
 
-static void __init copy_devtree(void)
-{
-        void *alloc = early_init_dt_alloc_memory_arch(
-                        be32_to_cpu(initial_boot_params->totalsize), 8);
-        if (alloc) {
-                memcpy(alloc, initial_boot_params,
-                                be32_to_cpu(initial_boot_params->totalsize));
-                initial_boot_params = alloc;
-        }
+        early_init_dt_scan(params);
+
+        if (!command_line[0])
+                strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
 }
 
 static int __init xtensa_device_probe(void)
@@ -525,10 +501,7 @@ void __init setup_arch(char **cmdline_p)
 
         bootmem_init();
 
-#ifdef CONFIG_OF
-        copy_devtree();
-        unflatten_device_tree();
-#endif
+        unflatten_and_copy_device_tree();
 
         platform_setup(cmdline_p);