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-rw-r--r--arch/arm/mm/nommu.c66
1 files changed, 36 insertions, 30 deletions
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 55764a7ef1f0..da1874f9f8cf 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -88,30 +88,35 @@ static unsigned long irbar_read(void)
void __init sanity_check_meminfo_mpu(void)
{
int i;
- struct membank *bank = meminfo.bank;
phys_addr_t phys_offset = PHYS_OFFSET;
phys_addr_t aligned_region_size, specified_mem_size, rounded_mem_size;
-
- /* Initially only use memory continuous from PHYS_OFFSET */
- if (bank_phys_start(&bank[0]) != phys_offset)
- panic("First memory bank must be contiguous from PHYS_OFFSET");
-
- /* Banks have already been sorted by start address */
- for (i = 1; i < meminfo.nr_banks; i++) {
- if (bank[i].start <= bank_phys_end(&bank[0]) &&
- bank_phys_end(&bank[i]) > bank_phys_end(&bank[0])) {
- bank[0].size = bank_phys_end(&bank[i]) - bank[0].start;
+ struct memblock_region *reg;
+ bool first = true;
+ phys_addr_t mem_start;
+ phys_addr_t mem_end;
+
+ for_each_memblock(memory, reg) {
+ if (first) {
+ /*
+ * Initially only use memory continuous from
+ * PHYS_OFFSET */
+ if (reg->base != phys_offset)
+ panic("First memory bank must be contiguous from PHYS_OFFSET");
+
+ mem_start = reg->base;
+ mem_end = reg->base + reg->size;
+ specified_mem_size = reg->size;
+ first = false;
} else {
- pr_notice("Ignoring RAM after 0x%.8lx. "
- "First non-contiguous (ignored) bank start: 0x%.8lx\n",
- (unsigned long)bank_phys_end(&bank[0]),
- (unsigned long)bank_phys_start(&bank[i]));
- break;
+ /*
+ * memblock auto merges contiguous blocks, remove
+ * all blocks afterwards
+ */
+ pr_notice("Ignoring RAM after %pa, memory at %pa ignored\n",
+ &mem_start, &reg->base);
+ memblock_remove(reg->base, reg->size);
}
}
- /* All contiguous banks are now merged in to the first bank */
- meminfo.nr_banks = 1;
- specified_mem_size = bank[0].size;
/*
* MPU has curious alignment requirements: Size must be power of 2, and
@@ -128,23 +133,24 @@ void __init sanity_check_meminfo_mpu(void)
*/
aligned_region_size = (phys_offset - 1) ^ (phys_offset);
/* Find the max power-of-two sized region that fits inside our bank */
- rounded_mem_size = (1 << __fls(bank[0].size)) - 1;
+ rounded_mem_size = (1 << __fls(specified_mem_size)) - 1;
/* The actual region size is the smaller of the two */
aligned_region_size = aligned_region_size < rounded_mem_size
? aligned_region_size + 1
: rounded_mem_size + 1;
- if (aligned_region_size != specified_mem_size)
- pr_warn("Truncating memory from 0x%.8lx to 0x%.8lx (MPU region constraints)",
- (unsigned long)specified_mem_size,
- (unsigned long)aligned_region_size);
+ if (aligned_region_size != specified_mem_size) {
+ pr_warn("Truncating memory from %pa to %pa (MPU region constraints)",
+ &specified_mem_size, &aligned_region_size);
+ memblock_remove(mem_start + aligned_region_size,
+ specified_mem_size - aligned_round_size);
+
+ mem_end = mem_start + aligned_region_size;
+ }
- meminfo.bank[0].size = aligned_region_size;
- pr_debug("MPU Region from 0x%.8lx size 0x%.8lx (end 0x%.8lx))\n",
- (unsigned long)phys_offset,
- (unsigned long)aligned_region_size,
- (unsigned long)bank_phys_end(&bank[0]));
+ pr_debug("MPU Region from %pa size %pa (end %pa))\n",
+ &phys_offset, &aligned_region_size, &mem_end);
}
@@ -292,7 +298,7 @@ void __init sanity_check_meminfo(void)
{
phys_addr_t end;
sanity_check_meminfo_mpu();
- end = bank_phys_end(&meminfo.bank[meminfo.nr_banks - 1]);
+ end = memblock_end_of_DRAM();
high_memory = __va(end - 1) + 1;
}