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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (C) 2010, 2013 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 <rtems/asm.h>
#include <bspopts.h>
#include <libcpu/powerpc-utility.h>
.globl _start
.globl virtex_exc_vector_base
.section ".bsp_start_text", "ax"
virtex_exc_vector_base:
b _start
/* Critical Input 0x0100 */
/* Machine Check 0x0200 */
/* Data Storage 0x0300 */
/* Instruction Storage 0x0400 */
/* External 0x0500 */
/* Alignment 0x0600 */
/* Program 0x0700 */
/* FPU Unavailable 0x0800 */
/* System Call 0x0C00 */
/* APU Unavailable 0x0F20 */
/* Programmable-Interval Timer 0x1000 */
/* Fixed-Interval Timer 0x1010 */
/* Watchdog Timer 0x1020 */
/* Data TLB Miss 0x1100 */
/* Instruction TLB Miss 0x1200 */
/* Debug 0x2000 */
.rept 0x2000 / 4 - 1
b twiddle
.endr
_start:
/* Reset time base */
li r0, 0
mtspr TBWU, r0
mtspr TBWL, r0
/*
* Initialize start stack. The stacks are statically allocated and
* properly aligned.
*/
LA r1, _ISR_Stack_area_end
subi r1, r1, PPC_DEFAULT_CACHE_LINE_SIZE
stw r0, 0(r1)
/* Copy fast text */
LWI r3, bsp_section_fast_text_begin
LWI r4, bsp_section_fast_text_load_begin
LWI r5, bsp_section_fast_text_size
bl copy
/* Copy fast data */
LWI r3, bsp_section_fast_data_begin
LWI r4, bsp_section_fast_data_load_begin
LWI r5, bsp_section_fast_data_size
bl copy
/* Clear SBSS */
LWI r3, bsp_section_sbss_begin
LWI r4, bsp_section_sbss_size
bl bsp_start_zero
/* Clear BSS */
LWI r3, bsp_section_bss_begin
LWI r4, bsp_section_bss_size
bl bsp_start_zero
/* Set up EABI and SYSV environment */
bl __eabi
/* Clear command line */
li r3, 0
bl boot_card
twiddle:
bl bsp_reset
b twiddle
copy:
cmpw r3, r4
beqlr
b memcpy
/* Reset entry */
.section ".virtex_reset", "ax"
jump_to_start:
LWI r3, _start
mtctr r3
bctr
b jump_to_start
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