Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into next

Pull ARM updates from Russell King:

 - Major clean-up of the L2 cache support code.  The existing mess was
   becoming rather unmaintainable through all the additions that others
   have done over time.  This turns it into a much nicer structure, and
   implements a few performance improvements as well.

 - Clean up some of the CP15 control register tweaks for alignment
   support, moving some code and data into alignment.c

 - DMA properties for ARM, from Santosh and reviewed by DT people.  This
   adds DT properties to specify bus translations we can't discover
   automatically, and to indicate whether devices are coherent.

 - Hibernation support for ARM

 - Make ftrace work with read-only text in modules

 - add suspend support for PJ4B CPUs

 - rework interrupt masking for undefined instruction handling, which
   allows us to enable interrupts earlier in the handling of these
   exceptions.

 - support for big endian page tables

 - fix stacktrace support to exclude stacktrace functions from the
   trace, and add save_stack_trace_regs() implementation so that kprobes
   can record stack traces.

 - Add support for the Cortex-A17 CPU.

 - Remove last vestiges of ARM710 support.

 - Removal of ARM "meminfo" structure, finally converting us solely to
   memblock to handle the early memory initialisation.

* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (142 commits)
  ARM: ensure C page table setup code follows assembly code (part II)
  ARM: ensure C page table setup code follows assembly code
  ARM: consolidate last remaining open-coded alignment trap enable
  ARM: remove global cr_no_alignment
  ARM: remove CPU_CP15 conditional from alignment.c
  ARM: remove unused adjust_cr() function
  ARM: move "noalign" command line option to alignment.c
  ARM: provide common method to clear bits in CPU control register
  ARM: 8025/1: Get rid of meminfo
  ARM: 8060/1: mm: allow sub-architectures to override PCI I/O memory type
  ARM: 8066/1: correction for ARM patch 8031/2
  ARM: 8049/1: ftrace/add save_stack_trace_regs() implementation
  ARM: 8065/1: remove last use of CONFIG_CPU_ARM710
  ARM: 8062/1: Modify ldrt fixup handler to re-execute the userspace instruction
  ARM: 8047/1: rwsem: use asm-generic rwsem implementation
  ARM: l2c: trial at enabling some Cortex-A9 optimisations
  ARM: l2c: add warnings for stuff modifying aux_ctrl register values
  ARM: l2c: print a warning with L2C-310 caches if the cache size is modified
  ARM: l2c: remove old .set_debug method
  ARM: l2c: kill L2X0_AUX_CTRL_MASK before anyone else makes use of this
  ...

1 files changed, 37 insertions, 44 deletions

diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 928d596d9ab4..659c75d808dc 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -23,6 +23,7 @@
 #include <linux/dma-contiguous.h>
 #include <linux/sizes.h>
 
+#include <asm/cp15.h>
 #include <asm/mach-types.h>
 #include <asm/memblock.h>
 #include <asm/prom.h>
@@ -36,6 +37,14 @@
 
 #include "mm.h"
 
+#ifdef CONFIG_CPU_CP15_MMU
+unsigned long __init __clear_cr(unsigned long mask)
+{
+        cr_alignment = cr_alignment & ~mask;
+        return cr_alignment;
+}
+#endif
+
 static phys_addr_t phys_initrd_start __initdata = 0;
 static unsigned long phys_initrd_size __initdata = 0;
 
@@ -81,24 +90,21 @@ __tagtable(ATAG_INITRD2, parse_tag_initrd2);
  * initialization functions, as well as show_mem() for the skipping
  * of holes in the memory map.  It is populated by arm_add_memory().
  */
-struct meminfo meminfo;
-
 void show_mem(unsigned int filter)
 {
         int free = 0, total = 0, reserved = 0;
-        int shared = 0, cached = 0, slab = 0, i;
-        struct meminfo * mi = &meminfo;
+        int shared = 0, cached = 0, slab = 0;
+        struct memblock_region *reg;
 
         printk("Mem-info:\n");
         show_free_areas(filter);
 
-        for_each_bank (i, mi) {
-                struct membank *bank = &mi->bank[i];
+        for_each_memblock (memory, reg) {
                 unsigned int pfn1, pfn2;
                 struct page *page, *end;
 
-                pfn1 = bank_pfn_start(bank);
-                pfn2 = bank_pfn_end(bank);
+                pfn1 = memblock_region_memory_base_pfn(reg);
+                pfn2 = memblock_region_memory_end_pfn(reg);
 
                 page = pfn_to_page(pfn1);
                 end  = pfn_to_page(pfn2 - 1) + 1;
@@ -115,8 +121,9 @@ void show_mem(unsigned int filter)
                                 free++;
                         else
                                 shared += page_count(page) - 1;
-                        page++;
-                } while (page < end);
+                        pfn1++;
+                        page = pfn_to_page(pfn1);
+                } while (pfn1 < pfn2);
         }
 
         printk("%d pages of RAM\n", total);
@@ -130,16 +137,9 @@ void show_mem(unsigned int filter)
 static void __init find_limits(unsigned long *min, unsigned long *max_low,
                                unsigned long *max_high)
 {
-        struct meminfo *mi = &meminfo;
-        int i;
-
-        /* This assumes the meminfo array is properly sorted */
-        *min = bank_pfn_start(&mi->bank[0]);
-        for_each_bank (i, mi)
-                if (mi->bank[i].highmem)
-                                break;
-        *max_low = bank_pfn_end(&mi->bank[i - 1]);
-        *max_high = bank_pfn_end(&mi->bank[mi->nr_banks - 1]);
+        *max_low = PFN_DOWN(memblock_get_current_limit());
+        *min = PFN_UP(memblock_start_of_DRAM());
+        *max_high = PFN_DOWN(memblock_end_of_DRAM());
 }
 
 #ifdef CONFIG_ZONE_DMA
@@ -274,14 +274,8 @@ phys_addr_t __init arm_memblock_steal(phys_addr_t size, phys_addr_t align)
         return phys;
 }
 
-void __init arm_memblock_init(struct meminfo *mi,
-        const struct machine_desc *mdesc)
+void __init arm_memblock_init(const struct machine_desc *mdesc)
 {
-        int i;
-
-        for (i = 0; i < mi->nr_banks; i++)
-                memblock_add(mi->bank[i].start, mi->bank[i].size);
-
         /* Register the kernel text, kernel data and initrd with memblock. */
 #ifdef CONFIG_XIP_KERNEL
         memblock_reserve(__pa(_sdata), _end - _sdata);
@@ -412,54 +406,53 @@ free_memmap(unsigned long start_pfn, unsigned long end_pfn)
 /*
  * The mem_map array can get very big.  Free the unused area of the memory map.
  */
-static void __init free_unused_memmap(struct meminfo *mi)
+static void __init free_unused_memmap(void)
 {
-        unsigned long bank_start, prev_bank_end = 0;
-        unsigned int i;
+        unsigned long start, prev_end = 0;
+        struct memblock_region *reg;
 
         /*
          * This relies on each bank being in address order.
          * The banks are sorted previously in bootmem_init().
          */
-        for_each_bank(i, mi) {
-                struct membank *bank = &mi->bank[i];
-
-                bank_start = bank_pfn_start(bank);
+        for_each_memblock(memory, reg) {
+                start = memblock_region_memory_base_pfn(reg);
 
 #ifdef CONFIG_SPARSEMEM
                 /*
                  * Take care not to free memmap entries that don't exist
                  * due to SPARSEMEM sections which aren't present.
                  */
-                bank_start = min(bank_start,
-                                 ALIGN(prev_bank_end, PAGES_PER_SECTION));
+                start = min(start,
+                                 ALIGN(prev_end, PAGES_PER_SECTION));
 #else
                 /*
                  * Align down here since the VM subsystem insists that the
                  * memmap entries are valid from the bank start aligned to
                  * MAX_ORDER_NR_PAGES.
                  */
-                bank_start = round_down(bank_start, MAX_ORDER_NR_PAGES);
+                start = round_down(start, MAX_ORDER_NR_PAGES);
 #endif
                 /*
                  * If we had a previous bank, and there is a space
                  * between the current bank and the previous, free it.
                  */
-                if (prev_bank_end && prev_bank_end < bank_start)
-                        free_memmap(prev_bank_end, bank_start);
+                if (prev_end && prev_end < start)
+                        free_memmap(prev_end, start);
 
                 /*
                  * Align up here since the VM subsystem insists that the
                  * memmap entries are valid from the bank end aligned to
                  * MAX_ORDER_NR_PAGES.
                  */
-                prev_bank_end = ALIGN(bank_pfn_end(bank), MAX_ORDER_NR_PAGES);
+                prev_end = ALIGN(memblock_region_memory_end_pfn(reg),
+                                 MAX_ORDER_NR_PAGES);
         }
 
 #ifdef CONFIG_SPARSEMEM
-        if (!IS_ALIGNED(prev_bank_end, PAGES_PER_SECTION))
-                free_memmap(prev_bank_end,
-                            ALIGN(prev_bank_end, PAGES_PER_SECTION));
+        if (!IS_ALIGNED(prev_end, PAGES_PER_SECTION))
+                free_memmap(prev_end,
+                            ALIGN(prev_end, PAGES_PER_SECTION));
 #endif
 }
 
@@ -535,7 +528,7 @@ void __init mem_init(void)
         set_max_mapnr(pfn_to_page(max_pfn) - mem_map);
 
         /* this will put all unused low memory onto the freelists */
-        free_unused_memmap(&meminfo);
+        free_unused_memmap();
         free_all_bootmem();
 
 #ifdef CONFIG_SA1111