Merge tag 'efi-urgent' into x86/urgent

 * Avoid WARN_ON() when mapping BGRT on Baytrail (EFI 32-bit).

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

1 files changed, 36 insertions, 23 deletions

diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 987a7f5bce5f..b0df9761de6d 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);
 
@@ -717,7 +731,7 @@ static void __init request_standard_resources(const struct machine_desc *mdesc)
 	kernel_data.end     = virt_to_phys(_end - 1);
 
 	for_each_memblock(memory, region) {
-		res = alloc_bootmem_low(sizeof(*res));
+		res = memblock_virt_alloc_low(sizeof(*res), 0);
 		res->name  = "System RAM";
 		res->start = __pfn_to_phys(memblock_region_memory_base_pfn(region));
 		res->end = __pfn_to_phys(memblock_region_memory_end_pfn(region)) - 1;
@@ -817,18 +831,17 @@ static void __init reserve_crashkernel(void)
 	if (ret)
 		return;
 
-	ret = reserve_bootmem(crash_base, crash_size, BOOTMEM_EXCLUSIVE);
+	ret = memblock_reserve(crash_base, crash_size);
 	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;