diff options
Diffstat (limited to 'arch/arm64/mm/init.c')
| -rw-r--r-- | arch/arm64/mm/init.c | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index bac4f06bb7d9..4e90a1d17058 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -197,45 +197,10 @@ static int __init early_mem(char *p) } early_param("mem", early_mem); -static int __init early_init_dt_scan_usablemem(unsigned long node, - const char *uname, int depth, void *data) -{ - struct memblock_region *usablemem = data; - const __be32 *reg; - int len; - - if (depth != 1 || strcmp(uname, "chosen") != 0) - return 0; - - reg = of_get_flat_dt_prop(node, "linux,usable-memory-range", &len); - if (!reg || (len < (dt_root_addr_cells + dt_root_size_cells))) - return 1; - - usablemem->base = dt_mem_next_cell(dt_root_addr_cells, ®); - usablemem->size = dt_mem_next_cell(dt_root_size_cells, ®); - - return 1; -} - -static void __init fdt_enforce_memory_region(void) -{ - struct memblock_region reg = { - .size = 0, - }; - - of_scan_flat_dt(early_init_dt_scan_usablemem, ®); - - if (reg.size) - memblock_cap_memory_range(reg.base, reg.size); -} - void __init arm64_memblock_init(void) { const s64 linear_region_size = PAGE_END - _PAGE_OFFSET(vabits_actual); - /* Handle linux,usable-memory-range property */ - fdt_enforce_memory_region(); - /* Remove memory above our supported physical address size */ memblock_remove(1ULL << PHYS_MASK_SHIFT, ULLONG_MAX); |