xref: /rk3399_rockchip-uboot/arch/sandbox/cpu/state.c (revision 5c2859cdc30287b3593d9df88f48c31eecb0bbed)

/*
 * Copyright (c) 2011-2012 The Chromium OS Authors.
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <os.h>
#include <asm/state.h>

/* Main state record for the sandbox */
static struct sandbox_state main_state;
static struct sandbox_state *state;	/* Pointer to current state record */

void state_record_exit(enum exit_type_id exit_type)
{
	state->exit_type = exit_type;
}

struct sandbox_state *state_get_current(void)
{
	assert(state);
	return state;
}

int state_init(void)
{
	state = &main_state;

	state->ram_size = CONFIG_SYS_SDRAM_SIZE;
	state->ram_buf = os_malloc(state->ram_size);
	assert(state->ram_buf);

	/*
	 * Example of how to use GPIOs:
	 *
	 * sandbox_gpio_set_direction(170, 0);
	 * sandbox_gpio_set_value(170, 0);
	 */
	return 0;
}

int state_uninit(void)
{
	int err;

	state = &main_state;

	if (state->write_ram_buf) {
		err = os_write_ram_buf(state->ram_buf_fname);
		if (err) {
			printf("Failed to write RAM buffer\n");
			return err;
		}
	}

	return 0;
}