This unit test checks the following runtime services: AllocatePages, FreePages, GetMemoryMap
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- v3: no change --- lib/efi_selftest/Makefile | 1 + lib/efi_selftest/efi_selftest_memory.c | 163 +++++++++++++++++++++++++ 2 files changed, 164 insertions(+) create mode 100644 lib/efi_selftest/efi_selftest_memory.c
diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile index 4b1c0bb84b1..743b4820449 100644 --- a/lib/efi_selftest/Makefile +++ b/lib/efi_selftest/Makefile @@ -27,6 +27,7 @@ efi_selftest_fdt.o \ efi_selftest_gop.o \ efi_selftest_loaded_image.o \ efi_selftest_manageprotocols.o \ +efi_selftest_memory.o \ efi_selftest_rtc.o \ efi_selftest_snp.o \ efi_selftest_textinput.o \ diff --git a/lib/efi_selftest/efi_selftest_memory.c b/lib/efi_selftest/efi_selftest_memory.c new file mode 100644 index 00000000000..0623e8e62da --- /dev/null +++ b/lib/efi_selftest/efi_selftest_memory.c @@ -0,0 +1,163 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * efi_selftest_memory + * + * Copyright (c) 2018 Heinrich Schuchardt xypron.glpk@gmx.de + * + * This unit test checks the following runtime services: + * AllocatePages, FreePages, GetMemoryMap + */ + +#include <efi_selftest.h> + +#define EFI_ST_NUM_PAGES 8 + +static struct efi_boot_services *boottime; + +/** + * setup() - setup unit test + * + * @handle: handle of the loaded image + * @systable: system table + * Return: EFI_ST_SUCCESS for success + */ +static int setup(const efi_handle_t handle, + const struct efi_system_table *systable) +{ + boottime = systable->boottime; + + return EFI_ST_SUCCESS; +} + +/** + * find_in_memory_map() - check matching memory map entry exists + * + * @memory_map: memory map + * @desc_size: number of memory map entries + * @addr: physical address to find in the map + * @type: expected memory type + * Return: EFI_ST_SUCCESS for success + */ +static int find_in_memory_map(efi_uintn_t map_size, + struct efi_mem_desc *memory_map, + efi_uintn_t desc_size, + u64 addr, int memory_type) +{ + efi_uintn_t i; + bool found = false; + + for (i = 0; map_size; ++i, map_size -= desc_size) { + struct efi_mem_desc *entry = &memory_map[i]; + + if (addr >= entry->physical_start && + addr < entry->physical_start + + (entry->num_pages << EFI_PAGE_SHIFT)) { + if (found) { + efi_st_error("Duplicate memory map entry\n"); + return EFI_ST_FAILURE; + } + found = true; + if (memory_type != entry->type) { + efi_st_error + ("Wrong memory type %d, expected %d\n", + entry->type, memory_type); + return EFI_ST_FAILURE; + } + } + } + if (!found) { + efi_st_error("Missing memory map entry\n"); + return EFI_ST_FAILURE; + } + return EFI_ST_SUCCESS; +} + +/* + * execute() - execute unit test + * + * Return: EFI_ST_SUCCESS for success + */ +static int execute(void) +{ + u64 p1; + u64 p2; + efi_uintn_t map_size = 0; + efi_uintn_t map_key; + efi_uintn_t desc_size; + u32 desc_version; + struct efi_mem_desc *memory_map; + efi_status_t ret; + + /* Allocate two page ranges with different memory type */ + ret = boottime->allocate_pages(EFI_ALLOCATE_ANY_PAGES, + EFI_RUNTIME_SERVICES_CODE, + EFI_ST_NUM_PAGES, &p1); + if (ret != EFI_SUCCESS) { + efi_st_error("AllocatePages did not return EFI_SUCCESS\n"); + return EFI_ST_FAILURE; + } + ret = boottime->allocate_pages(EFI_ALLOCATE_ANY_PAGES, + EFI_RUNTIME_SERVICES_DATA, + EFI_ST_NUM_PAGES, &p2); + if (ret != EFI_SUCCESS) { + efi_st_error("AllocatePages did not return EFI_SUCCESS\n"); + return EFI_ST_FAILURE; + } + + /* Load memory map */ + ret = boottime->get_memory_map(&map_size, NULL, &map_key, &desc_size, + &desc_version); + if (ret != EFI_BUFFER_TOO_SMALL) { + efi_st_error + ("GetMemoryMap did not return EFI_BUFFER_TOO_SMALL\n"); + return EFI_ST_FAILURE; + } + /* Allocate extra space for newly allocated memory */ + map_size += sizeof(struct efi_mem_desc); + ret = boottime->allocate_pool(EFI_BOOT_SERVICES_DATA, map_size, + (void **)&memory_map); + if (ret != EFI_SUCCESS) { + efi_st_error("AllocatePool did not return EFI_SUCCESS\n"); + return EFI_ST_FAILURE; + } + ret = boottime->get_memory_map(&map_size, memory_map, &map_key, + &desc_size, &desc_version); + if (ret != EFI_SUCCESS) { + efi_st_error("GetMemoryMap did not return EFI_SUCCESS\n"); + return EFI_ST_FAILURE; + } + + /* Check memory map entries */ + if (find_in_memory_map(map_size, memory_map, desc_size, p1, + EFI_RUNTIME_SERVICES_CODE) != EFI_ST_SUCCESS) + return EFI_ST_FAILURE; + if (find_in_memory_map(map_size, memory_map, desc_size, p2, + EFI_RUNTIME_SERVICES_DATA) != EFI_ST_SUCCESS) + return EFI_ST_FAILURE; + + /* Free memory */ + ret = boottime->free_pages(p1, EFI_ST_NUM_PAGES); + if (ret != EFI_SUCCESS) { + efi_st_error("FreePages did not return EFI_SUCCESS\n"); + return EFI_ST_FAILURE; + } + ret = boottime->free_pages(p2, EFI_ST_NUM_PAGES); + if (ret != EFI_SUCCESS) { + efi_st_error("FreePages did not return EFI_SUCCESS\n"); + return EFI_ST_FAILURE; + } + ret = boottime->free_pool(memory_map); + if (ret != EFI_SUCCESS) { + efi_st_error("FreePool did not return EFI_SUCCESS\n"); + return EFI_ST_FAILURE; + } + + return EFI_ST_SUCCESS; +} + +EFI_UNIT_TEST(memory) = { + .name = "memory", + .phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT, + .setup = setup, + .execute = execute, +};