blob: d0f20936b0c88b62e1a4a720947291076b03508c [file] [log] [blame]
/*
* Copyright 2020 Broadcom
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/device.h>
#include <zephyr/init.h>
#include <soc.h>
#include <zephyr/arch/cpu.h>
/**
* @brief Perform basic hardware initialization at boot.
*
* This needs to be run from the very beginning.
* So the init priority has to be 0 (zero).
*
* @return 0
*/
static int viper_init(const struct device *arg)
{
uint32_t key;
uint32_t data;
ARG_UNUSED(arg);
key = irq_lock();
/* pcie pmon lite init */
data = sys_read32(LS_ICFG_PMON_LITE_CLK_CTRL);
data |= PCIE_PMON_LITE_CLK_ENABLE;
sys_write32(data, LS_ICFG_PMON_LITE_CLK_CTRL);
data = sys_read32(LS_ICFG_PMON_LITE_SW_RESETN);
data |= PCIE_PMON_LITE_SW_RESETN;
sys_write32(data, LS_ICFG_PMON_LITE_SW_RESETN);
irq_unlock(key);
return 0;
}
SYS_INIT(viper_init, PRE_KERNEL_1, 0);