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-rw-r--r--arch/arm/kernel/setup.c28
1 files changed, 21 insertions, 7 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 5d65438685d8..6a1b8a81b1ae 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -73,6 +73,8 @@ __setup("fpe=", fpe_setup);
#endif
extern void paging_init(const struct machine_desc *desc);
+extern void early_paging_init(const struct machine_desc *,
+ struct proc_info_list *);
extern void sanity_check_meminfo(void);
extern enum reboot_mode reboot_mode;
extern void setup_dma_zone(const struct machine_desc *desc);
@@ -599,6 +601,8 @@ static void __init setup_processor(void)
elf_hwcap &= ~(HWCAP_THUMB | HWCAP_IDIVT);
#endif
+ erratum_a15_798181_init();
+
feat_v6_fixup();
cacheid_init();
@@ -619,9 +623,10 @@ void __init dump_machine_table(void)
/* can't use cpu_relax() here as it may require MMU setup */;
}
-int __init arm_add_memory(phys_addr_t start, phys_addr_t size)
+int __init arm_add_memory(u64 start, u64 size)
{
struct membank *bank = &meminfo.bank[meminfo.nr_banks];
+ u64 aligned_start;
if (meminfo.nr_banks >= NR_BANKS) {
printk(KERN_CRIT "NR_BANKS too low, "
@@ -634,10 +639,16 @@ int __init arm_add_memory(phys_addr_t start, phys_addr_t size)
* Size is appropriately rounded down, start is rounded up.
*/
size -= start & ~PAGE_MASK;
- bank->start = PAGE_ALIGN(start);
+ aligned_start = PAGE_ALIGN(start);
-#ifndef CONFIG_ARM_LPAE
- if (bank->start + size < bank->start) {
+#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);
+ 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);
/*
@@ -645,10 +656,11 @@ int __init arm_add_memory(phys_addr_t start, phys_addr_t size)
* 32 bits, we use ULONG_MAX as the upper limit rather than 4GB.
* This means we lose a page after masking.
*/
- size = ULONG_MAX - bank->start;
+ size = ULONG_MAX - aligned_start;
}
#endif
+ bank->start = aligned_start;
bank->size = size & ~(phys_addr_t)(PAGE_SIZE - 1);
/*
@@ -669,8 +681,8 @@ int __init arm_add_memory(phys_addr_t start, phys_addr_t size)
static int __init early_mem(char *p)
{
static int usermem __initdata = 0;
- phys_addr_t size;
- phys_addr_t start;
+ u64 size;
+ u64 start;
char *endp;
/*
@@ -878,6 +890,8 @@ void __init setup_arch(char **cmdline_p)
parse_early_param();
sort(&meminfo.bank, meminfo.nr_banks, sizeof(meminfo.bank[0]), meminfo_cmp, NULL);
+
+ early_paging_init(mdesc, lookup_processor_type(read_cpuid_id()));
sanity_check_meminfo();
arm_memblock_init(&meminfo, mdesc);