src/bsp/lk/platform/mt2735/platform.c

/*
 * Copyright (c) 2018 MediaTek Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files
 * (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <debug.h>
#include <dev/interrupt/arm_gic.h>
#include <dev/timer/arm_generic.h>
#include <dev/uart.h>
#include <err.h>
#include <errno.h>
#include <lib/mempool.h>
#include <platform.h>
#include <platform/platform_blx.h>
#include <platform/gic.h>
#include <platform/mtk_wdt.h>
#include <platform/mtk_drm.h>
#include <platform/mt_gpio.h>

void platform_early_init(void)
{
    uart_init_early();

    /* initialize the interrupt controller */
    arm_gic_init();

    arm_generic_timer_init(ARM_GENERIC_TIMER_PHYSICAL_INT, 13000000);

    /* init debugtop DRM */
    mtk_drm_init();

    /* init AP watchdog and set timeout to 10 secs */
    mtk_wdt_init();

    /* init gpio */
    mtk_gpio_init();

    /* bl2 or bl33 specific platform early init */
    platform_early_init_blx();

    extern void  mtk_wdt_early_init(void) __attribute__((weak));
    if (mtk_wdt_early_init)
        mtk_wdt_early_init();
}

void platform_init(void)
{
    int cache_ret, uncache_ret;

    cache_ret = NO_ERROR;
    if (CACHED_MEMPOOL_ADDR && CACHED_MEMPOOL_SIZE)
        cache_ret = mempool_init((void *)CACHED_MEMPOOL_ADDR,
                                 CACHED_MEMPOOL_SIZE, MEMPOOL_CACHE);

    uncache_ret = NO_ERROR;
    if (UNCACHED_MEMPOOL_ADDR && UNCACHED_MEMPOOL_SIZE)
        uncache_ret = mempool_init((void *)UNCACHED_MEMPOOL_ADDR,
                                   UNCACHED_MEMPOOL_SIZE, MEMPOOL_UNCACHE);

    if ((cache_ret != NO_ERROR) || (uncache_ret != NO_ERROR))
        platform_halt(HALT_ACTION_REBOOT, HALT_REASON_SW_PANIC);
}

/* Initialization context in start.S before switching from EL3 to EL1.
 * Note data/bss segment NOT initialized, i.e. No assumption on global variable initialization.*/
void platform_el3_init(void)
{
    gic_setup();
}


/*
 * target_ab_set_active_bootdev() - set active boot device in ab boot flow
 *
 * this function is used to set the active boot device, aka slot in ab boot
 * concept. For mt2735, the slot concept should be defined by the actual
 * target. For targets that support ab boot concept should override this
 * function.
 *
 * @slot: the slot # to be set as active boot device
 *
 * returns:
 *     -ENOTSUP: function not supported
 */
__WEAK int target_ab_set_active_bootdev(int slot)
{
    return 0;
}

/*
 * override the common plat_ab_set_active_bootdev() impl.
 */
int plat_ab_set_active_bootdev(int slot)
{
    return target_ab_set_active_bootdev(slot);
}