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/*
* Copyright (c) 2018 embedded brains GmbH
*
* 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 AUTHOR 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 AUTHOR 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/irq-generic.h>
#include <bsp/riscv.h>
#include <libfdt.h>
void *riscv_fdt_get_address(const void *fdt, int node)
{
int parent;
int ac;
int len;
const uint32_t *reg;
uint64_t addr;
parent = fdt_parent_offset(fdt, node);
if (parent < 0) {
return NULL;
}
ac = fdt_address_cells(fdt, parent);
if (ac != 1 && ac != 2) {
return NULL;
}
reg = fdt_getprop(fdt, node, "reg", &len);
if (reg == NULL || len < ac) {
return NULL;
}
addr = 0;
while (ac > 0) {
addr = (addr << 32) | fdt32_to_cpu(*reg);
++reg;
--ac;
}
#if __riscv_xlen < 64
if (addr > 0xffffffff) {
return NULL;
}
#endif
return (void *)(uintptr_t) addr;
}
void bsp_start(void)
{
bsp_interrupt_initialize();
}
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