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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2026 Texas Instruments Incorporated - https://www.ti.com/
*/
#include <config.h>
#include <fdt_support.h>
#include <image.h>
#include <lmb.h>
#include <malloc.h>
#include <asm/global_data.h>
#include <test/test.h>
#include <test/ut.h>
#define IMAGE_FDT_TEST(_name, _flags) UNIT_TEST(_name, _flags, image_fdt)
DECLARE_GLOBAL_DATA_PTR;
/**
* test_boot_fdt_add_mem_rsv_regions - Make sure dt reservations are created and
* destroyed correctly
* @uts: Test state
*
* This test depends on the UT_DM device tree and ensures the following
* statements hold true: The default reservation in test.dtb exists.
* Re-reserving that region will result in an error. Loading a new device tree
* will remove old reservations.
*/
static int test_boot_fdt_add_mem_rsv_regions(struct unit_test_state *uts)
{
phys_addr_t start = CFG_SYS_SDRAM_BASE + 0x100000;
const void *old_blob = gd->fdt_blob;
int ret = CMD_RET_FAILURE;
ulong fdt_sz;
int nodeoffset;
void *new_blob;
/* Default reservation should exist */
ut_asserteq(1, lmb_is_reserved_flags(start, LMB_NOMAP));
/* Attempting to re-reserve should warn the user */
boot_fdt_add_mem_rsv_regions(gd->fdt_blob);
ut_assert_nextlinen("ERROR: reserving");
ut_assert_console_end();
/* Loading a new_blob device tree should be allowed */
fdt_sz = fdt_totalsize(gd->fdt_blob);
new_blob = malloc(fdt_sz);
ut_assertnonnull(new_blob);
memcpy(new_blob, gd->fdt_blob, fdt_sz);
nodeoffset = fdt_path_offset(new_blob, "/reserved-memory");
if (nodeoffset < 0)
goto free_blob;
if (fdt_del_node(new_blob, nodeoffset))
goto free_blob;
boot_fdt_add_mem_rsv_regions(new_blob);
gd->fdt_blob = new_blob;
if (ut_check_console_end(uts)) {
ut_failf(uts, __FILE__, __LINE__, __func__, "console",
"Expected no more output, got '%s'", uts->actual_str);
goto switch_fdt;
}
/* Reservation should not exist now */
if (!lmb_is_reserved_flags(start, LMB_NOMAP))
ret = 0;
/* Cleanup */
switch_fdt:
boot_fdt_add_mem_rsv_regions(old_blob);
gd->fdt_blob = old_blob;
free_blob:
free(new_blob);
return ret;
}
IMAGE_FDT_TEST(test_boot_fdt_add_mem_rsv_regions, UTF_CONSOLE);
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