In the memory map the regions with the lowest addresses may be of type EFI_RESERVED_TYPE. The reserved areas may be discontinuous relative to the rest of the memory. So for calculating the maximum loading address for the device tree and the initial ramdisk image these reserved areas should not be taken into account.
Signed-off-by: Heinrich Schuchardt <[email protected]> --- drivers/firmware/efi/libstub/efi-stub.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/efi/libstub/efi-stub.c b/drivers/firmware/efi/libstub/efi-stub.c index c2484bf75c5d..13058ac75765 100644 --- a/drivers/firmware/efi/libstub/efi-stub.c +++ b/drivers/firmware/efi/libstub/efi-stub.c @@ -106,7 +106,8 @@ static unsigned long get_dram_base(void) map.map_end = map.map + map_size; for_each_efi_memory_desc_in_map(&map, md) { - if (md->attribute & EFI_MEMORY_WB) { + if (md->attribute & EFI_MEMORY_WB && + md->type != EFI_RESERVED_TYPE) { if (membase > md->phys_addr) membase = md->phys_addr; } -- 2.28.0
