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/*
* This file is part of the coreboot project.
*
* Copyright 2015 MediaTek Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/stages.h>
#include <boardid.h>
#include <soc/emi.h>
#include <soc/mmu_operations.h>
#include <soc/mt6391.h>
#include <soc/pll.h>
#include <soc/rtc.h>
#include <timer.h>
void platform_romstage_main(void)
{
int stabilize_usec;
struct stopwatch sw;
rtc_boot();
/* Raise CPU voltage to allow higher frequency */
stabilize_usec = mt6391_configure_ca53_voltage(1125000);
stopwatch_init_usecs_expire(&sw, stabilize_usec);
/* init memory */
mt_mem_init(get_sdram_config());
stopwatch_wait_until_expired(&sw);
/* Set to maximum frequency */
if (board_id() + CONFIG_BOARD_ID_ADJUSTMENT < 5)
mt_pll_raise_ca53_freq(1600 * MHz);
else
mt_pll_raise_ca53_freq(1700 * MHz);
mtk_mmu_after_dram();
}
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