GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * efi_selftest_crc32
+ *
+ * Copyright (c) 2018 Heinrich Schuchardt <xypron.glpk@gmx.de>
+ *
+ * This unit test checks the CalculateCrc32 bootservice and checks the
+ * headers of the system table, the boot services table, and the runtime
+ * services table before and after ExitBootServices().
+ */
+
+#include <efi_selftest.h>
+#include <u-boot/crc.h>
+
+const struct efi_system_table *st;
+efi_status_t (EFIAPI *bs_crc32)(const void *data, efi_uintn_t data_size,
+				u32 *crc32);
+
+static int check_table(const void *table)
+{
+	efi_status_t ret;
+	u32 crc32, res;
+	/* Casting from constant to not constant */
+	struct efi_table_hdr *hdr = (struct efi_table_hdr *)table;
+
+	if (!hdr->signature) {
+		efi_st_error("Missing header signature\n");
+		return EFI_ST_FAILURE;
+	}
+	if (!hdr->revision) {
+		efi_st_error("Missing header revision\n");
+		return EFI_ST_FAILURE;
+	}
+	if (hdr->headersize <= sizeof(struct efi_table_hdr)) {
+		efi_st_error("Incorrect headersize value\n");
+		return EFI_ST_FAILURE;
+	}
+	if (hdr->reserved) {
+		efi_st_error("Reserved header field is not zero\n");
+		return EFI_ST_FAILURE;
+	}
+
+	crc32 = hdr->crc32;
+	/*
+	 * Setting the crc32 of the 'const' table to zero is easier than
+	 * copying
+	 */
+	hdr->crc32 = 0;
+	ret = bs_crc32(table, hdr->headersize, &res);
+	/* Reset table crc32 so it stays constant */
+	hdr->crc32 = crc32;
+	if (ret != EFI_ST_SUCCESS) {
+		efi_st_error("CalculateCrc32 failed\n");
+		return EFI_ST_FAILURE;
+	}
+	if (res != crc32) {
+		efi_st_error("Incorrect CRC32\n");
+		// return EFI_ST_FAILURE;
+	}
+	return EFI_ST_SUCCESS;
+}
+
+/*
+ * Setup unit test.
+ *
+ * Check that CalculateCrc32 is working correctly.
+ * Check tables before ExitBootServices().
+ *
+ * @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)
+{
+	efi_status_t ret;
+	u32 res;
+
+	st = systable;
+	bs_crc32 = systable->boottime->calculate_crc32;
+
+	/* Check that CalculateCrc32 is working */
+	ret = bs_crc32("U-Boot", 6, &res);
+	if (ret != EFI_ST_SUCCESS) {
+		efi_st_error("CalculateCrc32 failed\n");
+		return EFI_ST_FAILURE;
+	}
+	if (res != 0x134b0db4) {
+		efi_st_error("Incorrect CRC32\n");
+		return EFI_ST_FAILURE;
+	}
+
+	/* Check tables before ExitBootServices() */
+	if (check_table(st) != EFI_ST_SUCCESS) {
+		efi_st_error("Checking system table\n");
+		return EFI_ST_FAILURE;
+	}
+	if (check_table(st->boottime) != EFI_ST_SUCCESS) {
+		efi_st_error("Checking boottime table\n");
+		return EFI_ST_FAILURE;
+	}
+	if (check_table(st->runtime) != EFI_ST_SUCCESS) {
+		efi_st_error("Checking runtime table\n");
+		return EFI_ST_FAILURE;
+	}
+
+	return EFI_ST_SUCCESS;
+}
+
+/*
+ * Execute unit test
+ *
+ * Check tables after ExitBootServices()
+ *
+ * @return:	EFI_ST_SUCCESS for success
+ */
+static int execute(void)
+{
+	if (check_table(st) != EFI_ST_SUCCESS) {
+		efi_st_error("Checking system table\n");
+		return EFI_ST_FAILURE;
+	}
+	if (check_table(st->runtime) != EFI_ST_SUCCESS) {
+		efi_st_error("Checking runtime table\n");
+		return EFI_ST_FAILURE;
+	}
+
+	/*
+	 * We cannot call SetVirtualAddressMap() and recheck the runtime
+	 * table afterwards because this would invalidate the addresses of the
+	 * unit tests.
+	 */
+
+	return EFI_ST_SUCCESS;
+}
+
+EFI_UNIT_TEST(crc32) = {
+	.name = "crc32",
+	.phase = EFI_SETUP_BEFORE_BOOTTIME_EXIT,
+	.setup = setup,
+	.execute = execute,
+};