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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2019, Theobroma Systems Design und Consulting GmbH
*/
#include <common.h>
#include <command.h>
#include <errno.h>
#include <fdt_support.h>
#include <malloc.h>
#include <tee/optee.h>
#include <linux/sizes.h>
#include <test/ut.h>
#include <test/optee.h>
#include <test/suites.h>
/* 4k ought to be enough for anybody */
#define FDT_COPY_SIZE (4 * SZ_1K)
extern u32 __dtb_test_optee_base_begin;
extern u32 __dtb_test_optee_optee_begin;
extern u32 __dtb_test_optee_no_optee_begin;
static void *fdt;
static bool expect_success;
static int optee_fdt_firmware(struct unit_test_state *uts)
{
const void *prop;
int offs, len;
offs = fdt_path_offset(fdt, "/firmware/optee");
ut_assert(expect_success ? offs >= 0 : offs < 0);
/* only continue if we have an optee node */
if (offs < 0)
return CMD_RET_SUCCESS;
prop = fdt_getprop(fdt, offs, "compatible", &len);
ut_assertok(strncmp((const char *)prop, "linaro,optee-tz", len));
prop = fdt_getprop(fdt, offs, "method", &len);
ut_assert(strncmp(prop, "hvc", 3) == 0 || strncmp(prop, "smc", 3) == 0);
return CMD_RET_SUCCESS;
}
OPTEE_TEST(optee_fdt_firmware, 0);
static int optee_fdt_protected_memory(struct unit_test_state *uts)
{
int offs, subnode;
bool found;
offs = fdt_path_offset(fdt, "/firmware/optee");
ut_assert(expect_success ? offs >= 0 : offs < 0);
/* only continue if we have an optee node */
if (offs < 0)
return CMD_RET_SUCCESS;
/* optee inserts its memory regions as reserved-memory nodes */
offs = fdt_subnode_offset(fdt, 0, "reserved-memory");
ut_assert(offs >= 0);
subnode = fdt_first_subnode(fdt, offs);
ut_assert(subnode);
found = 0;
while (subnode >= 0) {
const char *name = fdt_get_name(fdt, subnode, NULL);
struct fdt_resource res;
ut_assert(name);
/* only handle optee reservations */
if (strncmp(name, "optee", 5))
continue;
found = true;
/* check if this subnode has a reg property */
ut_assertok(fdt_get_resource(fdt, subnode, "reg", 0, &res));
subnode = fdt_next_subnode(fdt, subnode);
}
ut_assert(found);
return CMD_RET_SUCCESS;
}
OPTEE_TEST(optee_fdt_protected_memory, 0);
int do_ut_optee(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
struct unit_test *tests = ll_entry_start(struct unit_test,
optee_test);
const int n_ents = ll_entry_count(struct unit_test, optee_test);
struct unit_test_state *uts;
void *fdt_optee = &__dtb_test_optee_optee_begin;
void *fdt_no_optee = &__dtb_test_optee_no_optee_begin;
void *fdt_base = &__dtb_test_optee_base_begin;
int ret = -ENOMEM;
uts = calloc(1, sizeof(*uts));
if (!uts)
return -ENOMEM;
ut_assertok(fdt_check_header(fdt_base));
ut_assertok(fdt_check_header(fdt_optee));
ut_assertok(fdt_check_header(fdt_no_optee));
fdt = malloc(FDT_COPY_SIZE);
if (!fdt)
return ret;
/*
* Resize the FDT to 4k so that we have room to operate on
*
* (and relocate it since the memory might be mapped
* read-only)
*/
ut_assertok(fdt_open_into(fdt_base, fdt, FDT_COPY_SIZE));
/*
* (1) Try to copy optee nodes from empty dt.
* This should still run successfully.
*/
ut_assertok(optee_copy_fdt_nodes(fdt_no_optee, fdt));
expect_success = false;
ret = cmd_ut_category("optee", "", tests, n_ents, argc, argv);
/* (2) Try to copy optee nodes from prefilled dt */
ut_assertok(optee_copy_fdt_nodes(fdt_optee, fdt));
expect_success = true;
ret = cmd_ut_category("optee", "", tests, n_ents, argc, argv);
/* (3) Try to copy OP-TEE nodes into a already filled DT */
ut_assertok(fdt_open_into(fdt_optee, fdt, FDT_COPY_SIZE));
ut_assertok(optee_copy_fdt_nodes(fdt_optee, fdt));
expect_success = true;
ret = cmd_ut_category("optee", "", tests, n_ents, argc, argv);
free(fdt);
return ret;
}
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