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/*
* Copyright (c) 2017 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <info@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <bsp.h>
#include <bsp/bootcard.h>
#include <bsp/fatal.h>
#include <bsp/fdt.h>
#include <bsp/irq-generic.h>
#include <libfdt.h>
uint32_t bsp_fdt_map_intr(uint32_t intr)
{
return intr + 32;
}
void arm_generic_timer_get_config(
uint32_t *frequency,
uint32_t *irq
)
{
const void *fdt;
int node;
int len;
const uint32_t *val;
fdt = bsp_fdt_get();
node = fdt_path_offset(fdt, "/timer");
val = fdt_getprop(fdt, node, "clock-frequency", &len);
if (val != NULL && len >= 4) {
*frequency = fdt32_to_cpu(val[0]);
} else {
bsp_fatal(IMX_FATAL_GENERIC_TIMER_FREQUENCY);
}
val = fdt_getprop(fdt, node, "interrupts", &len);
if (val != NULL && len >= 8) {
/* FIXME: Figure out how Linux gets a proper IRQ number */
*irq = 16 + fdt32_to_cpu(val[1]);
} else {
bsp_fatal(IMX_FATAL_GENERIC_TIMER_IRQ);
}
}
void bsp_start(void)
{
bsp_interrupt_initialize();
}
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