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Diffstat (limited to '')
| -rw-r--r-- | bsps/epiphany/epiphany_sim/start/start.S | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/bsps/epiphany/epiphany_sim/start/start.S b/bsps/epiphany/epiphany_sim/start/start.S deleted file mode 100644 index c79d23dc86..0000000000 --- a/bsps/epiphany/epiphany_sim/start/start.S +++ /dev/null @@ -1,167 +0,0 @@ -/* - * Copyright (c) 2015 University of York. - * Hesham ALMatary <hmka501@york.ac.uk> - * - * 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/linker-symbols.h> -#include <rtems/asm.h> - -EXTERN(bsp_section_bss_begin) -EXTERN(bsp_section_bss_end) -EXTERN(_ISR_Handler) -EXTERN(bsp_start_vector_table_end) -EXTERN(bsp_start_vector_table_size) -EXTERN(bsp_vector_table_size) -EXTERN(_ISR_Stack_area_end) - -PUBLIC(_EPIPHANY_Exception_default) -PUBLIC(bsp_start_vector_table_begin) -PUBLIC(_start) - -.section .vector, "wax" -TYPE_FUNC(_start) -SYM(_start): - .balign 4 ; - b .normal_start - - .balign 4 ; 0x4 - b .sw_exception - - .balign 4 ; 0x8 - b .normal_start - - .balign 4 ; 0xc - b .clock_isr - - .balign 4 ; 0x10 - b .timer1_isr - - .balign 4 ; 0x14 - b _EPIPHANY_Exception_default - - .balign 4 ; 0x18 - b _EPIPHANY_Exception_default - - .balign 4 ; 0x1c - b _EPIPHANY_Exception_default - - .balign 4 ; 0x20 - b _EPIPHANY_Exception_default - - .balign 4 ; 0x24 - b _EPIPHANY_Exception_default - -bsp_start_vector_table_begin: - .word .normal_start /* Reset */ - .word _EPIPHANY_Exception_default /* SW exception */ - .word _EPIPHANY_Exception_default /* Data Page Fault */ - .word _EPIPHANY_Exception_default /* Timer 0 */ - .word _EPIPHANY_Exception_default /* Timer 1 */ - .word _EPIPHANY_Exception_default /* Message int */ - .word _EPIPHANY_Exception_default /* DMA0 int */ - .word _EPIPHANY_Exception_default /* DMA1 int */ - .word _EPIPHANY_Exception_default /* WAND */ - .word _EPIPHANY_Exception_default /* User interrupt */ - -_bsp_start_vector_table_end: - -.size _start, .-_start - -.section .start,"ax" -.align 4 -.type _external_start, %function -.normal_start: - /* Initialize the stack and frame pointers */ - mov sp, %low(_ISR_Stack_area_end) - movt sp, %high(_ISR_Stack_area_end) - mov fp, sp - -cpu0: - /* Zero .bss section */ - mov r0, %low(bsp_section_bss_begin) - movt r0, %high(bsp_section_bss_begin) - mov r1, sp - mov r2,#0 - mov r3,#0 - -_bss_clear_loop: - strd r2, [r0], +#1 - sub r5, r1, r0 - bne _bss_clear_loop - - /* Clear the reset interrupt flag */ - mov r0, %low(_jump_to_c) - movt r0, %high(_jump_to_c) - movts iret, r0 - rti - -_jump_to_c: - /* Jump to bootcard */ - mov r3, %low(boot_card) - movt r3, %high(boot_card) - jalr r3 - - /* Should never reach here */ - idle - -.size .normal_start, .-.normal_start - -.balign 4 -.type .sw_exception, %function -.sw_exception: - idle - -.balign 4 -.type .clock_isr, %function -.clock_isr: - /* - * r62 and r63 are saved here, and restored from _ISR_Handler, they - * and hold vector number and _ISR_Handler address repsectively. - */ - add sp, sp, #-8 - str r62, [sp, #0] - str r63, [sp, #4] - mov r62, 3 - mov r63, %low(_ISR_Handler) - movt r63, %high(_ISR_Handler) - jr r6 - -.balign 4 -.type .timer1_isr, %function -.timer1_isr: - /* - * r62 and r63 are saved here, and restored from _ISR_Handler, they - * and hold vector number and _ISR_Handler address repsectively. - */ - add sp, sp, #-8 - str r62, [sp, 0] - str r63, [sp, 4] - mov r62, 4 - mov r63, %low(_ISR_Handler) - movt r63, %high(_ISR_Handler) - jr r63 - -.balign 4 -TYPE_FUNC(_EPIPHANY_Exception_default) -SYM(_EPIPHANY_Exception_default): - idle |