1 files changed, 32 insertions, 25 deletions

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 1f1eecca7f55..7049815d66d5 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -29,6 +29,7 @@
 #include <asm/cputype.h>
 #include <asm/elf.h>
 #include <asm/procinfo.h>
+#include <asm/sections.h>
 #include <asm/setup.h>
 #include <asm/mach-types.h>
 #include <asm/cacheflush.h>
@@ -59,9 +60,8 @@ static int __init fpe_setup(char *line)
 __setup("fpe=", fpe_setup);
 #endif
 
-extern void paging_init(struct meminfo *, struct machine_desc *desc);
+extern void paging_init(struct machine_desc *desc);
 extern void reboot_setup(char *str);
-extern void _text, _etext, __data_start, _edata, _end;
 
 unsigned int processor_id;
 EXPORT_SYMBOL(processor_id);
@@ -112,7 +112,6 @@ static struct stack stacks[NR_CPUS];
 char elf_platform[ELF_PLATFORM_SIZE];
 EXPORT_SYMBOL(elf_platform);
 
-static struct meminfo meminfo __initdata = { 0, };
 static const char *cpu_name;
 static const char *machine_name;
 static char __initdata command_line[COMMAND_LINE_SIZE];
@@ -367,21 +366,34 @@ static struct machine_desc * __init setup_machine(unsigned int nr)
         return list;
 }
 
-static void __init arm_add_memory(unsigned long start, unsigned long size)
+static int __init arm_add_memory(unsigned long start, unsigned long size)
 {
-        struct membank *bank;
+        struct membank *bank = &meminfo.bank[meminfo.nr_banks];
+
+        if (meminfo.nr_banks >= NR_BANKS) {
+                printk(KERN_CRIT "NR_BANKS too low, "
+                        "ignoring memory at %#lx\n", start);
+                return -EINVAL;
+        }
 
         /*
          * Ensure that start/size are aligned to a page boundary.
          * Size is appropriately rounded down, start is rounded up.
          */
         size -= start & ~PAGE_MASK;
-
-        bank = &meminfo.bank[meminfo.nr_banks++];
-
         bank->start = PAGE_ALIGN(start);
         bank->size  = size & PAGE_MASK;
         bank->node  = PHYS_TO_NID(start);
+
+        /*
+         * Check whether this memory region has non-zero size or
+         * invalid node number.
+         */
+        if (bank->size == 0 || bank->node >= MAX_NUMNODES)
+                return -EINVAL;
+
+        meminfo.nr_banks++;
+        return 0;
 }
 
 /*
@@ -472,10 +484,10 @@ request_standard_resources(struct meminfo *mi, struct machine_desc *mdesc)
         struct resource *res;
         int i;
 
-        kernel_code.start   = virt_to_phys(&_text);
-        kernel_code.end     = virt_to_phys(&_etext - 1);
-        kernel_data.start   = virt_to_phys(&__data_start);
-        kernel_data.end     = virt_to_phys(&_end - 1);
+        kernel_code.start   = virt_to_phys(_text);
+        kernel_code.end     = virt_to_phys(_etext - 1);
+        kernel_data.start   = virt_to_phys(_data);
+        kernel_data.end     = virt_to_phys(_end - 1);
 
         for (i = 0; i < mi->nr_banks; i++) {
                 if (mi->bank[i].size == 0)
@@ -539,14 +551,7 @@ __tagtable(ATAG_CORE, parse_tag_core);
 
 static int __init parse_tag_mem32(const struct tag *tag)
 {
-        if (meminfo.nr_banks >= NR_BANKS) {
-                printk(KERN_WARNING
-                       "Ignoring memory bank 0x%08x size %dKB\n",
-                        tag->u.mem.start, tag->u.mem.size / 1024);
-                return -EINVAL;
-        }
-        arm_add_memory(tag->u.mem.start, tag->u.mem.size);
-        return 0;
+        return arm_add_memory(tag->u.mem.start, tag->u.mem.size);
 }
 
 __tagtable(ATAG_MEM, parse_tag_mem32);
@@ -710,15 +715,15 @@ void __init setup_arch(char **cmdline_p)
                 parse_tags(tags);
         }
 
-        init_mm.start_code = (unsigned long) &_text;
-        init_mm.end_code   = (unsigned long) &_etext;
-        init_mm.end_data   = (unsigned long) &_edata;
-        init_mm.brk        = (unsigned long) &_end;
+        init_mm.start_code = (unsigned long) _text;
+        init_mm.end_code   = (unsigned long) _etext;
+        init_mm.end_data   = (unsigned long) _edata;
+        init_mm.brk        = (unsigned long) _end;
 
         memcpy(boot_command_line, from, COMMAND_LINE_SIZE);
         boot_command_line[COMMAND_LINE_SIZE-1] = '\0';
         parse_cmdline(cmdline_p, from);
-        paging_init(&meminfo, mdesc);
+        paging_init(mdesc);
         request_standard_resources(&meminfo, mdesc);
 
 #ifdef CONFIG_SMP
@@ -772,6 +777,8 @@ static const char *hwcap_str[] = {
         "java",
         "iwmmxt",
         "crunch",
+        "thumbee",
+        "neon",
         NULL
 };