efi_selftest: unit test for RISCV_EFI_BOOT_PROTOCOL

Add a test for the RISCV_EFI_BOOT_PROTOCOL.

Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>

diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile
index 9ff6e17..0b05f8a 100644 (file)
--- a/lib/efi_selftest/Makefile
+++ b/lib/efi_selftest/Makefile
@@ -64,6 +64,7 @@ obj-$(CONFIG_EFI_LOADER_HII) += efi_selftest_hii.o
 obj-$(CONFIG_EFI_RNG_PROTOCOL) += efi_selftest_rng.o
 obj-$(CONFIG_EFI_GET_TIME) += efi_selftest_rtc.o
 obj-$(CONFIG_EFI_TCG2_PROTOCOL) += efi_selftest_tcg2.o
+obj-$(CONFIG_EFI_RISCV_BOOT_PROTOCOL) += efi_selftest_riscv.o
 
 ifeq ($(CONFIG_GENERATE_ACPI_TABLE),)
 obj-y += efi_selftest_fdt.o

diff --git a/lib/efi_selftest/efi_selftest_riscv.c b/lib/efi_selftest/efi_selftest_riscv.c
new file mode 100644 (file)
index 0000000..9d2182e
--- /dev/null
+++ b/lib/efi_selftest/efi_selftest_riscv.c
@@ -0,0 +1,119 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * efi_selftest_riscv
+ *
+ * Copyright (c) 2022 Ventana Micro Systems Inc
+ *
+ * Test the RISCV_EFI_BOOT_PROTOCOL.
+ *
+ * The following services are tested:
+ * get_boot_hartid
+ */
+
+#include <efi_selftest.h>
+#include <efi_riscv.h>
+#include <linux/libfdt.h>
+
+static const struct efi_system_table *systemtab;
+static const struct efi_boot_services *boottime;
+static const char *fdt;
+static const efi_guid_t riscv_efi_boot_protocol_guid = RISCV_EFI_BOOT_PROTOCOL_GUID;
+static const efi_guid_t fdt_guid = EFI_FDT_GUID;
+
+/**
+ * efi_st_get_config_table() - get configuration table
+ *
+ * @guid:      GUID of the configuration table
+ * Return:     pointer to configuration table or NULL
+ */
+static void *efi_st_get_config_table(const efi_guid_t *guid)
+{
+       size_t i;
+
+       for (i = 0; i < systab.nr_tables; i++) {
+               if (!guidcmp(guid, &systemtab->tables[i].guid))
+                       return systemtab->tables[i].table;
+       }
+       return NULL;
+}
+
+/*
+ * 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 img_handle,
+                const struct efi_system_table *systable)
+{
+       systemtab = systable;
+       boottime = systable->boottime;
+
+       fdt = efi_st_get_config_table(&fdt_guid);
+
+       if (!fdt) {
+               efi_st_error("Missing device tree\n");
+               return EFI_ST_FAILURE;
+       }
+       return EFI_ST_SUCCESS;
+}
+
+/*
+ * Execute unit test.
+ *
+ * @return:    EFI_ST_SUCCESS for success
+ */
+static int execute(void)
+{
+       efi_status_t ret;
+       struct riscv_efi_boot_protocol *prot;
+       efi_uintn_t efi_hartid, fdt_hartid;
+       int chosen_node, len;
+       const fdt32_t *prop;
+
+       /* Get riscv boot protocol */
+       ret = boottime->locate_protocol(&riscv_efi_boot_protocol_guid, NULL,
+                                       (void **)&prot);
+       if (ret != EFI_SUCCESS) {
+               efi_st_error("RISC-V Boot Protocol not available\n");
+               return EFI_ST_FAILURE;
+       }
+
+       /* Get Boot Hart ID from EFI protocol */
+       ret = prot->get_boot_hartid(prot, &efi_hartid);
+       if (ret != EFI_SUCCESS) {
+               efi_st_error("Could not retrieve boot hart ID\n");
+               return EFI_ST_FAILURE;
+       }
+
+       /* Get Boot Hart ID from FDT */
+       chosen_node = fdt_path_offset(fdt, "/chosen");
+       if (chosen_node < 0) {
+               efi_st_error("/chosen node not found\n");
+               return EFI_ST_FAILURE;
+       }
+
+       prop = fdt_getprop((void *)fdt, chosen_node, "boot-hartid", &len);
+       if (!prop || len != sizeof(u32)) {
+               efi_st_error("boot-hartid not found\n");
+               return EFI_ST_FAILURE;
+       }
+
+       fdt_hartid = fdt32_to_cpu(*prop);
+
+       /* Boot Hart ID should be same */
+       if (efi_hartid != fdt_hartid) {
+               efi_st_error("boot-hartid is not same in EFI and FDT\n");
+               return EFI_ST_FAILURE;
+       }
+
+       return EFI_ST_SUCCESS;
+}
+
+EFI_UNIT_TEST(riscv) = {
+       .name = "riscv",
+       .phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
+       .setup = setup,
+       .execute = execute,
+};