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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2016 NextThing Co
* Copyright (c) 2016 Free Electrons
*/
#include <common.h>
#include <command.h>
#include <errno.h>
#include <fdt_support.h>
#include <malloc.h>
#include <linux/sizes.h>
#include <test/ut.h>
#include <test/overlay.h>
#include <test/suites.h>
/* 4k ought to be enough for anybody */
#define FDT_COPY_SIZE (4 * SZ_1K)
extern u32 __dtb_test_fdt_base_begin;
extern u32 __dtb_test_fdt_overlay_begin;
extern u32 __dtb_test_fdt_overlay_stacked_begin;
static void *fdt;
static int ut_fdt_getprop_u32_by_index(void *fdt, const char *path,
const char *name, int index,
u32 *out)
{
const fdt32_t *val;
int node_off;
int len;
node_off = fdt_path_offset(fdt, path);
if (node_off < 0)
return node_off;
val = fdt_getprop(fdt, node_off, name, &len);
if (!val || (len < (sizeof(uint32_t) * (index + 1))))
return -FDT_ERR_NOTFOUND;
*out = fdt32_to_cpu(*(val + index));
return 0;
}
static int ut_fdt_getprop_u32(void *fdt, const char *path, const char *name,
u32 *out)
{
return ut_fdt_getprop_u32_by_index(fdt, path, name, 0, out);
}
static int fdt_getprop_str(void *fdt, const char *path, const char *name,
const char **out)
{
int node_off;
int len;
node_off = fdt_path_offset(fdt, path);
if (node_off < 0)
return node_off;
*out = fdt_stringlist_get(fdt, node_off, name, 0, &len);
return len < 0 ? len : 0;
}
static int fdt_overlay_change_int_property(struct unit_test_state *uts)
{
u32 val = 0;
ut_assertok(ut_fdt_getprop_u32(fdt, "/test-node", "test-int-property",
&val));
ut_asserteq(43, val);
return CMD_RET_SUCCESS;
}
OVERLAY_TEST(fdt_overlay_change_int_property, 0);
static int fdt_overlay_change_str_property(struct unit_test_state *uts)
{
const char *val = NULL;
ut_assertok(fdt_getprop_str(fdt, "/test-node", "test-str-property",
&val));
ut_asserteq_str("foobar", val);
return CMD_RET_SUCCESS;
}
OVERLAY_TEST(fdt_overlay_change_str_property, 0);
static int fdt_overlay_add_str_property(struct unit_test_state *uts)
{
const char *val = NULL;
ut_assertok(fdt_getprop_str(fdt, "/test-node", "test-str-property-2",
&val));
ut_asserteq_str("foobar2", val);
return CMD_RET_SUCCESS;
}
OVERLAY_TEST(fdt_overlay_add_str_property, 0);
static int fdt_overlay_add_node_by_phandle(struct unit_test_state *uts)
{
int off;
off = fdt_path_offset(fdt, "/test-node/new-node");
ut_assert(off >= 0);
ut_assertnonnull(fdt_getprop(fdt, off, "new-property", NULL));
return CMD_RET_SUCCESS;
}
OVERLAY_TEST(fdt_overlay_add_node_by_phandle, 0);
static int fdt_overlay_add_node_by_path(struct unit_test_state *uts)
{
int off;
off = fdt_path_offset(fdt, "/new-node");
ut_assert(off >= 0);
ut_assertnonnull(fdt_getprop(fdt, off, "new-property", NULL));
return CMD_RET_SUCCESS;
}
OVERLAY_TEST(fdt_overlay_add_node_by_path, 0);
static int fdt_overlay_add_subnode_property(struct unit_test_state *uts)
{
int off;
off = fdt_path_offset(fdt, "/test-node/sub-test-node");
ut_assert(off >= 0);
ut_assertnonnull(fdt_getprop(fdt, off, "sub-test-property", NULL));
ut_assertnonnull(fdt_getprop(fdt, off, "new-sub-test-property", NULL));
return CMD_RET_SUCCESS;
}
OVERLAY_TEST(fdt_overlay_add_subnode_property, 0);
static int fdt_overlay_local_phandle(struct unit_test_state *uts)
{
uint32_t local_phandle;
u32 val = 0;
int off;
off = fdt_path_offset(fdt, "/new-local-node");
ut_assert(off >= 0);
local_phandle = fdt_get_phandle(fdt, off);
ut_assert(local_phandle);
ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-several-phandle",
0, &val));
ut_asserteq(local_phandle, val);
ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-several-phandle",
1, &val));
ut_asserteq(local_phandle, val);
return CMD_RET_SUCCESS;
}
OVERLAY_TEST(fdt_overlay_local_phandle, 0);
static int fdt_overlay_local_phandles(struct unit_test_state *uts)
{
uint32_t local_phandle, test_phandle;
u32 val = 0;
int off;
off = fdt_path_offset(fdt, "/new-local-node");
ut_assert(off >= 0);
local_phandle = fdt_get_phandle(fdt, off);
ut_assert(local_phandle);
off = fdt_path_offset(fdt, "/test-node");
ut_assert(off >= 0);
test_phandle = fdt_get_phandle(fdt, off);
ut_assert(test_phandle);
ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-phandle", 0,
&val));
ut_asserteq(test_phandle, val);
ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-phandle", 1,
&val));
ut_asserteq(local_phandle, val);
return CMD_RET_SUCCESS;
}
OVERLAY_TEST(fdt_overlay_local_phandles, 0);
static int fdt_overlay_stacked(struct unit_test_state *uts)
{
u32 val = 0;
ut_assertok(ut_fdt_getprop_u32(fdt, "/new-local-node",
"stacked-test-int-property", &val));
ut_asserteq(43, val);
return CMD_RET_SUCCESS;
}
OVERLAY_TEST(fdt_overlay_stacked, 0);
int do_ut_overlay(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
struct unit_test *tests = ll_entry_start(struct unit_test,
overlay_test);
const int n_ents = ll_entry_count(struct unit_test, overlay_test);
struct unit_test_state *uts;
void *fdt_base = &__dtb_test_fdt_base_begin;
void *fdt_overlay = &__dtb_test_fdt_overlay_begin;
void *fdt_overlay_stacked = &__dtb_test_fdt_overlay_stacked_begin;
void *fdt_overlay_copy, *fdt_overlay_stacked_copy;
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_overlay));
fdt = malloc(FDT_COPY_SIZE);
if (!fdt)
goto err1;
fdt_overlay_copy = malloc(FDT_COPY_SIZE);
if (!fdt_overlay_copy)
goto err2;
fdt_overlay_stacked_copy = malloc(FDT_COPY_SIZE);
if (!fdt_overlay_stacked_copy)
goto err3;
/*
* 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));
/*
* Resize the overlay 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_overlay, fdt_overlay_copy,
FDT_COPY_SIZE));
/*
* Resize the stacked overlay 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_overlay_stacked, fdt_overlay_stacked_copy,
FDT_COPY_SIZE));
/* Apply the overlay */
ut_assertok(fdt_overlay_apply(fdt, fdt_overlay_copy));
/* Apply the stacked overlay */
ut_assertok(fdt_overlay_apply(fdt, fdt_overlay_stacked_copy));
ret = cmd_ut_category("overlay", tests, n_ents, argc, argv);
free(fdt_overlay_stacked_copy);
err3:
free(fdt_overlay_copy);
err2:
free(fdt);
err1:
return ret;
}
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