diff options
Diffstat (limited to 'arch/arm64/mm/init.c')
| -rw-r--r-- | arch/arm64/mm/init.c | 29 |
1 files changed, 7 insertions, 22 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 51d5352e6ad5..f43db8a69262 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -71,7 +71,7 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max) /* 4GB maximum for 32-bit only capable devices */ if (IS_ENABLED(CONFIG_ZONE_DMA)) { unsigned long max_dma_phys = - (unsigned long)dma_to_phys(NULL, DMA_BIT_MASK(32) + 1); + (unsigned long)(dma_to_phys(NULL, DMA_BIT_MASK(32)) + 1); max_dma = max(min, min(max, max_dma_phys >> PAGE_SHIFT)); zone_size[ZONE_DMA] = max_dma - min; } @@ -126,7 +126,7 @@ static void arm64_memory_present(void) void __init arm64_memblock_init(void) { - u64 *reserve_map, base, size; + phys_addr_t dma_phys_limit = 0; /* Register the kernel text, kernel data and initrd with memblock */ memblock_reserve(__pa(_text), _end - _text); @@ -142,27 +142,12 @@ void __init arm64_memblock_init(void) memblock_reserve(__pa(swapper_pg_dir), SWAPPER_DIR_SIZE); memblock_reserve(__pa(idmap_pg_dir), IDMAP_DIR_SIZE); - /* Reserve the dtb region */ - memblock_reserve(virt_to_phys(initial_boot_params), - be32_to_cpu(initial_boot_params->totalsize)); - - /* - * Process the reserve map. This will probably overlap the initrd - * and dtb locations which are already reserved, but overlapping - * doesn't hurt anything - */ - reserve_map = ((void*)initial_boot_params) + - be32_to_cpu(initial_boot_params->off_mem_rsvmap); - while (1) { - base = be64_to_cpup(reserve_map++); - size = be64_to_cpup(reserve_map++); - if (!size) - break; - memblock_reserve(base, size); - } - early_init_fdt_scan_reserved_mem(); - dma_contiguous_reserve(0); + + /* 4GB maximum for 32-bit only capable devices */ + if (IS_ENABLED(CONFIG_ZONE_DMA)) + dma_phys_limit = dma_to_phys(NULL, DMA_BIT_MASK(32)) + 1; + dma_contiguous_reserve(dma_phys_limit); memblock_allow_resize(); memblock_dump_all(); |