xilinx-zynqmp/start/bspstart.c

0001 /*
0002  * SPDX-License-Identifier: BSD-2-Clause
0003  *
0004  * Copyright (C) 2013, 2015 embedded brains GmbH & Co. KG
0005  *
0006  * Copyright (C) 2019 DornerWorks
0007  *
0008  * Written by Jeff Kubascik <jeff.kubascik@dornerworks.com>
0009  *        and Josh Whitehead <josh.whitehead@dornerworks.com>
0010  *
0011  * Redistribution and use in source and binary forms, with or without
0012  * modification, are permitted provided that the following conditions
0013  * are met:
0014  * 1. Redistributions of source code must retain the above copyright
0015  *    notice, this list of conditions and the following disclaimer.
0016  * 2. Redistributions in binary form must reproduce the above copyright
0017  *    notice, this list of conditions and the following disclaimer in the
0018  *    documentation and/or other materials provided with the distribution.
0019  *
0020  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0021  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0022  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0023  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0024  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0025  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0026  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0027  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0028  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0029  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0030  * POSSIBILITY OF SUCH DAMAGE.
0031  */
0032
0033 #include <bsp.h>
0034 #include <bsp/bootcard.h>
0035 #include <bsp/irq-generic.h>
0036 #include <bsp/linker-symbols.h>
0037 #include <dev/clock/arm-generic-timer.h>
0038
0039 #include <libcpu/arm-cp15.h>
0040
0041 void arm_generic_timer_get_config(uint32_t *frequency, uint32_t *irq)
0042 {
0043 #ifdef ARM_GENERIC_TIMER_FREQ
0044   *frequency = ARM_GENERIC_TIMER_FREQ;
0045 #else
0046   /* Use generic timer frequency provided by boot loader */
0047   *frequency = arm_cp15_get_counter_frequency();
0048 #endif
0049
0050 #ifdef ARM_GENERIC_TIMER_USE_VIRTUAL
0051   *irq = ZYNQMP_IRQ_VIRT_TIMER;
0052 #else
0053   *irq = ZYNQMP_IRQ_NS_PHYS_TIMER;
0054 #endif
0055 }
0056
0057 void bsp_start(void)
0058 {
0059   bsp_interrupt_initialize();
0060   rtems_cache_coherent_add_area(
0061     bsp_section_nocacheheap_begin,
0062     (uintptr_t) bsp_section_nocacheheap_size
0063   );
0064 }