1 files changed, 35 insertions, 23 deletions

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 6a1b8a81b1ae..061cea820e3f 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -334,7 +334,7 @@ static void __init cacheid_init(void)
                 cacheid = CACHEID_VIVT;
         }
 
-        printk("CPU: %s data cache, %s instruction cache\n",
+        pr_info("CPU: %s data cache, %s instruction cache\n",
                 cache_is_vivt() ? "VIVT" :
                 cache_is_vipt_aliasing() ? "VIPT aliasing" :
                 cache_is_vipt_nonaliasing() ? "PIPT / VIPT nonaliasing" : "unknown",
@@ -416,7 +416,7 @@ void notrace cpu_init(void)
         struct stack *stk = &stacks[cpu];
 
         if (cpu >= NR_CPUS) {
-                printk(KERN_CRIT "CPU%u: bad primary CPU number\n", cpu);
+                pr_crit("CPU%u: bad primary CPU number\n", cpu);
                 BUG();
         }
 
@@ -484,7 +484,7 @@ void __init smp_setup_processor_id(void)
          */
         set_my_cpu_offset(0);
 
-        printk(KERN_INFO "Booting Linux on physical CPU 0x%x\n", mpidr);
+        pr_info("Booting Linux on physical CPU 0x%x\n", mpidr);
 }
 
 struct mpidr_hash mpidr_hash;
@@ -564,8 +564,8 @@ static void __init setup_processor(void)
          */
         list = lookup_processor_type(read_cpuid_id());
         if (!list) {
-                printk("CPU configuration botched (ID %08x), unable "
-                       "to continue.\n", read_cpuid_id());
+                pr_err("CPU configuration botched (ID %08x), unable to continue.\n",
+                       read_cpuid_id());
                 while (1);
         }
 
@@ -585,9 +585,9 @@ static void __init setup_processor(void)
         cpu_cache = *list->cache;
 #endif
 
-        printk("CPU: %s [%08x] revision %d (ARMv%s), cr=%08lx\n",
-               cpu_name, read_cpuid_id(), read_cpuid_id() & 15,
-               proc_arch[cpu_architecture()], cr_alignment);
+        pr_info("CPU: %s [%08x] revision %d (ARMv%s), cr=%08lx\n",
+                cpu_name, read_cpuid_id(), read_cpuid_id() & 15,
+                proc_arch[cpu_architecture()], cr_alignment);
 
         snprintf(init_utsname()->machine, __NEW_UTS_LEN + 1, "%s%c",
                  list->arch_name, ENDIANNESS);
@@ -629,8 +629,8 @@ int __init arm_add_memory(u64 start, u64 size)
         u64 aligned_start;
 
         if (meminfo.nr_banks >= NR_BANKS) {
-                printk(KERN_CRIT "NR_BANKS too low, "
-                        "ignoring memory at 0x%08llx\n", (long long)start);
+                pr_crit("NR_BANKS too low, ignoring memory at 0x%08llx\n",
+                        (long long)start);
                 return -EINVAL;
         }
 
@@ -643,14 +643,14 @@ int __init arm_add_memory(u64 start, u64 size)
 
 #ifndef CONFIG_ARCH_PHYS_ADDR_T_64BIT
         if (aligned_start > ULONG_MAX) {
-                printk(KERN_CRIT "Ignoring memory at 0x%08llx outside "
-                       "32-bit physical address space\n", (long long)start);
+                pr_crit("Ignoring memory at 0x%08llx outside 32-bit physical address space\n",
+                        (long long)start);
                 return -EINVAL;
         }
 
         if (aligned_start + size > ULONG_MAX) {
-                printk(KERN_CRIT "Truncating memory at 0x%08llx to fit in "
-                        "32-bit physical address space\n", (long long)start);
+                pr_crit("Truncating memory at 0x%08llx to fit in 32-bit physical address space\n",
+                        (long long)start);
                 /*
                  * To ensure bank->start + bank->size is representable in
                  * 32 bits, we use ULONG_MAX as the upper limit rather than 4GB.
@@ -660,6 +660,20 @@ int __init arm_add_memory(u64 start, u64 size)
         }
 #endif
 
+        if (aligned_start < PHYS_OFFSET) {
+                if (aligned_start + size <= PHYS_OFFSET) {
+                        pr_info("Ignoring memory below PHYS_OFFSET: 0x%08llx-0x%08llx\n",
+                                aligned_start, aligned_start + size);
+                        return -EINVAL;
+                }
+
+                pr_info("Ignoring memory below PHYS_OFFSET: 0x%08llx-0x%08llx\n",
+                        aligned_start, (u64)PHYS_OFFSET);
+
+                size -= PHYS_OFFSET - aligned_start;
+                aligned_start = PHYS_OFFSET;
+        }
+
         bank->start = aligned_start;
         bank->size = size & ~(phys_addr_t)(PAGE_SIZE - 1);
 
@@ -819,16 +833,15 @@ static void __init reserve_crashkernel(void)
 
         ret = reserve_bootmem(crash_base, crash_size, BOOTMEM_EXCLUSIVE);
         if (ret < 0) {
-                printk(KERN_WARNING "crashkernel reservation failed - "
-                       "memory is in use (0x%lx)\n", (unsigned long)crash_base);
+                pr_warn("crashkernel reservation failed - memory is in use (0x%lx)\n",
+                        (unsigned long)crash_base);
                 return;
         }
 
-        printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
-               "for crashkernel (System RAM: %ldMB)\n",
-               (unsigned long)(crash_size >> 20),
-               (unsigned long)(crash_base >> 20),
-               (unsigned long)(total_mem >> 20));
+        pr_info("Reserving %ldMB of memory at %ldMB for crashkernel (System RAM: %ldMB)\n",
+                (unsigned long)(crash_size >> 20),
+                (unsigned long)(crash_base >> 20),
+                (unsigned long)(total_mem >> 20));
 
         crashk_res.start = crash_base;
         crashk_res.end = crash_base + crash_size - 1;
@@ -873,8 +886,6 @@ void __init setup_arch(char **cmdline_p)
         machine_desc = mdesc;
         machine_name = mdesc->name;
 
-        setup_dma_zone(mdesc);
-
         if (mdesc->reboot_mode != REBOOT_HARD)
                 reboot_mode = mdesc->reboot_mode;
 
@@ -892,6 +903,7 @@ void __init setup_arch(char **cmdline_p)
         sort(&meminfo.bank, meminfo.nr_banks, sizeof(meminfo.bank[0]), meminfo_cmp, NULL);
 
         early_paging_init(mdesc, lookup_processor_type(read_cpuid_id()));
+        setup_dma_zone(mdesc);
         sanity_check_meminfo();
         arm_memblock_init(&meminfo, mdesc);