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// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2018 Microsemi Corporation
*/
#include <common.h>
#include <asm/sections.h>
#include <asm/io.h>
#include <asm/reboot.h>
void _machine_restart(void)
{
register u32 resetbits = PERF_SOFT_RST_SOFT_CHIP_RST;
(void)readl(BASE_DEVCPU_GCB + PERF_SOFT_RST);
/* Make sure VCore is NOT protected from reset */
clrbits_le32(BASE_CFG + ICPU_RESET, ICPU_RESET_CORE_RST_PROTECT);
/* Change to SPI bitbang for SPI reset workaround... */
writel(ICPU_SW_MODE_SW_SPI_CS_OE(1) | ICPU_SW_MODE_SW_SPI_CS(1) |
ICPU_SW_MODE_SW_PIN_CTRL_MODE, BASE_CFG + ICPU_SW_MODE);
/* Do the global reset */
writel(resetbits, BASE_DEVCPU_GCB + PERF_SOFT_RST);
while (1)
; /* NOP */
}
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