u-boot/board/microchip/mpfs_icicle/mpfs_icicle.c
Padmarao Begari 39494822e3 riscv: Add Microchip MPFS Icicle board support
This patch adds Microchip MPFS Icicle board support.
For now, NS16550 serial driver is only enabled.
The Microchip MPFS Icicle defconfig by default builds
U-Boot for M-Mode with SMP support.

Signed-off-by: Padmarao Begari <padmarao.begari@microchip.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
2019-06-05 13:19:24 +08:00

30 lines
533 B
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2019 Microchip Technology Inc.
* Padmarao Begari <padmarao.begari@microchip.com>
*/
#include <common.h>
#include <dm.h>
#include <asm/io.h>
#define MPFS_SYSREG_SOFT_RESET ((unsigned int *)0x20002088)
int board_init(void)
{
/* For now nothing to do here. */
return 0;
}
int board_early_init_f(void)
{
unsigned int val;
/* Reset uart peripheral */
val = readl(MPFS_SYSREG_SOFT_RESET);
val = (val & ~(1u << 5u));
writel(val, MPFS_SYSREG_SOFT_RESET);
return 0;
}