Check that the memory area containing the device tree is marked as runtime data.
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- lib/efi_selftest/efi_selftest_memory.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)
diff --git a/lib/efi_selftest/efi_selftest_memory.c b/lib/efi_selftest/efi_selftest_memory.c index 0623e8e62da..24b4438ce4f 100644 --- a/lib/efi_selftest/efi_selftest_memory.c +++ b/lib/efi_selftest/efi_selftest_memory.c @@ -6,13 +6,17 @@ * * This unit test checks the following runtime services: * AllocatePages, FreePages, GetMemoryMap + * + * The memory type used for the device tree is checked. */
#include <efi_selftest.h>
#define EFI_ST_NUM_PAGES 8
+static const efi_guid_t fdt_guid = EFI_FDT_GUID; static struct efi_boot_services *boottime; +static u64 fdt_addr;
/** * setup() - setup unit test @@ -24,8 +28,20 @@ static struct efi_boot_services *boottime; static int setup(const efi_handle_t handle, const struct efi_system_table *systable) { + size_t i; + boottime = systable->boottime;
+ for (i = 0; i < systable->nr_tables; ++i) { + if (!efi_st_memcmp(&systable->tables[i].guid, &fdt_guid, + sizeof(efi_guid_t))) { + if (fdt_addr) { + efi_st_error("Duplicate device tree\n"); + return EFI_ST_FAILURE; + } + fdt_addr = (uintptr_t)systable->tables[i].table; + } + } return EFI_ST_SUCCESS; }
@@ -152,6 +168,14 @@ static int execute(void) return EFI_ST_FAILURE; }
+ /* Check memory reservation for the device tree */ + if (fdt_addr && + find_in_memory_map(map_size, memory_map, desc_size, fdt_addr, + EFI_RUNTIME_SERVICES_DATA) != EFI_ST_SUCCESS) { + efi_st_error + ("Device tree not marked as runtime services data\n"); + return EFI_ST_FAILURE; + } return EFI_ST_SUCCESS; }