static void __init reserve_crashkernel(void)
{
unsigned long long crash_base, crash_size;
+ unsigned long long crash_max = arm64_dma_phys_limit;
int ret;
ret = parse_crashkernel(boot_command_line, memblock_phys_mem_size(),
crash_size = PAGE_ALIGN(crash_size);
- if (crash_base == 0) {
- /* Current arm64 boot protocol requires 2MB alignment */
- crash_base = memblock_find_in_range(0, arm64_dma_phys_limit,
- crash_size, SZ_2M);
- if (crash_base == 0) {
- pr_warn("cannot allocate crashkernel (size:0x%llx)\n",
- crash_size);
- return;
- }
- } else {
- /* User specifies base address explicitly. */
- if (!memblock_is_region_memory(crash_base, crash_size)) {
- pr_warn("cannot reserve crashkernel: region is not memory\n");
- return;
- }
+ /* User specifies base address explicitly. */
+ if (crash_base)
+ crash_max = crash_base + crash_size;
- if (memblock_is_region_reserved(crash_base, crash_size)) {
- pr_warn("cannot reserve crashkernel: region overlaps reserved memory\n");
- return;
- }
-
- if (!IS_ALIGNED(crash_base, SZ_2M)) {
- pr_warn("cannot reserve crashkernel: base address is not 2MB aligned\n");
- return;
- }
+ /* Current arm64 boot protocol requires 2MB alignment */
+ crash_base = memblock_phys_alloc_range(crash_size, SZ_2M,
+ crash_base, crash_max);
+ if (!crash_base) {
+ pr_warn("cannot allocate crashkernel (size:0x%llx)\n",
+ crash_size);
+ return;
}
- memblock_reserve(crash_base, crash_size);
pr_info("crashkernel reserved: 0x%016llx - 0x%016llx (%lld MB)\n",
crash_base, crash_base + crash_size, crash_size >> 20);