forked from Imagelibrary/rtems
65 lines
1.2 KiB
C
65 lines
1.2 KiB
C
/**
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* @file
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*
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* @ingroup RTEMSBSPsPowerPCQorIQ
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*
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* @brief BSP reset.
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*/
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/*
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* Copyright (c) 2010, 2017 embedded brains GmbH. All rights reserved.
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*
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* embedded brains GmbH
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* Dornierstr. 4
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* 82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#include <bsp/bootcard.h>
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#include <bsp/fdt.h>
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#include <bsp/qoriq.h>
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#include <libfdt.h>
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static int find_rstcr_node(const void *fdt, int node)
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{
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return fdt_node_offset_by_prop_value(fdt, node, "fsl,has-rstcr", NULL, 0);
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}
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void bsp_reset(void)
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{
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rtems_interrupt_level level;
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const char *fdt;
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rtems_interrupt_local_disable(level);
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(void) level;
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fdt = bsp_fdt_get();
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/* If we do not find a RSTCR, then loop forever */
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while (true) {
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int node;
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node = -1;
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while ((node = find_rstcr_node(fdt, node)) >= 0) {
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const uint32_t *reg;
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int len;
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reg = fdt_getprop(fdt, node, "reg", &len);
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if (reg != NULL && len >= 4) {
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volatile uint32_t *rstcr;
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rstcr = (volatile uint32_t *)
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((uintptr_t) &qoriq + fdt32_to_cpu(reg[0]) + 0xb0);
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*rstcr = 0x2;
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}
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}
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}
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}
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