// SPDX-License-Identifier: GPL-2.0+
/*
 * Tests for bootm routines
 *
 * Copyright 2020 Google LLC
 */

#include <common.h>
#include <bootm.h>
#include <test/suites.h>
#include <test/test.h>
#include <test/ut.h>

DECLARE_GLOBAL_DATA_PTR;

#define BOOTM_TEST(_name, _flags)	UNIT_TEST(_name, _flags, bootm_test)

enum {
	BUF_SIZE	= 1024,
};

#define CONSOLE_STR	"console=/dev/ttyS0"

/* Test cmdline processing where nothing happens */
static int bootm_test_nop(struct unit_test_state *uts)
{
	char buf[BUF_SIZE];

	*buf = '\0';
	ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, true));
	ut_asserteq_str("", buf);

	strcpy(buf, "test");
	ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, true));
	ut_asserteq_str("test", buf);

	return 0;
}
BOOTM_TEST(bootm_test_nop, 0);

/* Test cmdline processing when out of space */
static int bootm_test_nospace(struct unit_test_state *uts)
{
	char buf[BUF_SIZE];

	/* Zero buffer size */
	*buf = '\0';
	ut_asserteq(-ENOSPC, bootm_process_cmdline(buf, 0, true));

	/* Buffer string not terminated */
	memset(buf, 'a', BUF_SIZE);
	ut_asserteq(-ENOSPC, bootm_process_cmdline(buf, BUF_SIZE, true));

	/* Not enough space to copy string */
	memset(buf, '\0', BUF_SIZE);
	memset(buf, 'a', BUF_SIZE / 2);
	ut_asserteq(-ENOSPC, bootm_process_cmdline(buf, BUF_SIZE, true));

	/* Just enough space */
	memset(buf, '\0', BUF_SIZE);
	memset(buf, 'a', BUF_SIZE / 2 - 1);
	ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, true));

	return 0;
}
BOOTM_TEST(bootm_test_nospace, 0);

/* Test silent processing */
static int bootm_test_silent(struct unit_test_state *uts)
{
	char buf[BUF_SIZE];

	/* 'silent_linux' not set should do nothing */
	env_set("silent_linux", NULL);
	strcpy(buf, CONSOLE_STR);
	ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SILENT));
	ut_asserteq_str(CONSOLE_STR, buf);

	ut_assertok(env_set("silent_linux", "no"));
	ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SILENT));
	ut_asserteq_str(CONSOLE_STR, buf);

	ut_assertok(env_set("silent_linux", "yes"));
	ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SILENT));
	ut_asserteq_str("console=", buf);

	/* Empty buffer should still add the string */
	*buf = '\0';
	ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SILENT));
	ut_asserteq_str("console=", buf);

	/* Check nothing happens when do_silent is false */
	*buf = '\0';
	ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, 0));
	ut_asserteq_str("", buf);

	/* Not enough space */
	*buf = '\0';
	ut_asserteq(-ENOSPC, bootm_process_cmdline(buf, 8, BOOTM_CL_SILENT));

	/* Just enough space */
	*buf = '\0';
	ut_assertok(bootm_process_cmdline(buf, 9, BOOTM_CL_SILENT));

	/* add at end */
	strcpy(buf, "something");
	ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SILENT));
	ut_asserteq_str("something console=", buf);

	/* change at start */
	strcpy(buf, CONSOLE_STR " something");
	ut_assertok(bootm_process_cmdline(buf, BUF_SIZE, BOOTM_CL_SILENT));
	ut_asserteq_str("console= something", buf);

	return 0;
}
BOOTM_TEST(bootm_test_silent, 0);

/* Test silent processing in the bootargs variable */
static int bootm_test_silent_var(struct unit_test_state *uts)
{
	env_set("bootargs", NULL);
	env_set("silent_linux", NULL);
	ut_assertok(bootm_process_cmdline_env(BOOTM_CL_SILENT));
	ut_assertnull(env_get("bootargs"));

	env_set("bootargs", CONSOLE_STR);
	env_set("silent_linux", "yes");
	ut_assertok(bootm_process_cmdline_env(BOOTM_CL_SILENT));
	ut_asserteq_str("console=", env_get("bootargs"));

	return 0;
}
BOOTM_TEST(bootm_test_silent_var, 0);

int do_ut_bootm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
	struct unit_test *tests = ll_entry_start(struct unit_test, bootm_test);
	const int n_ents = ll_entry_count(struct unit_test, bootm_test);

	return cmd_ut_category("bootm", "bootm_test_", tests, n_ents,
			       argc, argv);
}