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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup RTEMSBSPsPowerPCQorIQ
*
* @brief BSP reset.
*/
/*
* Copyright (C) 2010, 2017 embedded brains GmbH & Co. KG
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <bsp/bootcard.h>
#include <bsp/fdt.h>
#include <bsp/qoriq.h>
#include <libfdt.h>
static int find_rstcr_node(const void *fdt, int node)
{
return fdt_node_offset_by_prop_value(fdt, node, "fsl,has-rstcr", NULL, 0);
}
void bsp_reset(void)
{
rtems_interrupt_level level;
const char *fdt;
rtems_interrupt_local_disable(level);
(void) level;
fdt = bsp_fdt_get();
/* If we do not find a RSTCR, then loop forever */
while (true) {
int node;
node = -1;
while ((node = find_rstcr_node(fdt, node)) >= 0) {
const uint32_t *reg;
int len;
reg = fdt_getprop(fdt, node, "reg", &len);
if (reg != NULL && len >= 4) {
volatile uint32_t *rstcr;
rstcr = (volatile uint32_t *)
((uintptr_t) &qoriq + fdt32_to_cpu(reg[0]) + 0xb0);
*rstcr = 0x2;
}
}
}
}
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