69 lines
1.9 KiB
ArmAsm
69 lines
1.9 KiB
ArmAsm
|
/* optimsoc.S -- Support for OpTiMSoC systems.
|
||
|
|
*
|
||
|
|
* Copyright (c) 2014 Authors
|
||
|
|
*
|
||
|
|
* Contributor Stefan Wallentowitz <stefan.wallentowitz@saunalahti.fi>
|
||
|
|
*
|
||
|
|
* The authors hereby grant permission to use, copy, modify, distribute,
|
||
|
|
* and license this software and its documentation for any purpose, provided
|
||
|
|
* that existing copyright notices are retained in all copies and that this
|
||
|
|
* notice is included verbatim in any distributions. No written agreement,
|
||
|
|
* license, or royalty fee is required for any of the authorized uses.
|
||
|
|
* Modifications to this software may be copyrighted by their authors
|
||
|
|
* and need not follow the licensing terms described here, provided that
|
||
|
|
* the new terms are clearly indicated on the first page of each file where
|
||
|
|
* they apply.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "../include/or1k-asm.h"
|
||
|
|
#include "../include/or1k-nop.h"
|
||
|
|
|
||
|
|
#define OPTIMSOC_NA_BASE 0xe0000000
|
||
|
|
|
||
|
|
#define OPTIMSOC_NA_REGS OPTIMSOC_NA_BASE + 0x00000
|
||
|
|
#define OPTIMSOC_NA_LMEM_SIZE OPTIMSOC_NA_REGS + 0x24
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Define symbols to be used during startup - file is linked at compile time
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
.weak _or1k_board_mem_base
|
||
|
|
.weak _or1k_board_mem_size
|
||
|
|
.weak _or1k_board_clk_freq
|
||
|
|
|
||
|
|
_or1k_board_mem_base: .long 0x0
|
||
|
|
_or1k_board_mem_size: .long 0x0
|
||
|
|
|
||
|
|
_or1k_board_clk_freq: .long 50000000
|
||
|
|
|
||
|
|
.weak _or1k_board_uart_base
|
||
|
|
.weak _or1k_board_uart_baud
|
||
|
|
.weak _or1k_board_uart_IRQ
|
||
|
|
_or1k_board_uart_base: .long 0x0
|
||
|
|
_or1k_board_uart_baud: .long 0
|
||
|
|
_or1k_board_uart_IRQ: .long 0
|
||
|
|
|
||
|
|
.weak _or1k_board_exit
|
||
|
|
_or1k_board_exit:
|
||
|
|
l.nop OR1K_NOP_K_EXIT
|
||
|
|
.Lexitloop:
|
||
|
|
OR1K_DELAYED_NOP(l.j .Lexitloop)
|
||
|
|
|
||
|
|
.global _or1k_board_init_early
|
||
|
|
_or1k_board_init_early:
|
||
|
|
#ifndef __OR1K_MULTICORE__
|
||
|
|
l.nop 0x1
|
||
|
|
.die:
|
||
|
|
OR1K_DELAYED_NOP(l.j die)
|
||
|
|
#endif
|
||
|
|
l.movhi r1,hi(OPTIMSOC_NA_LMEM_SIZE)
|
||
|
|
l.ori r1,r1,lo(OPTIMSOC_NA_LMEM_SIZE)
|
||
|
|
l.lwz r1,0(r1)
|
||
|
|
l.movhi r2,hi(_or1k_board_mem_size)
|
||
|
|
l.ori r2,r2,lo(_or1k_board_mem_size)
|
||
|
|
l.sw 0(r2),r1
|
||
|
|
|
||
|
|
.weak _or1k_board_init
|
||
|
|
_or1k_board_init:
|
||
|
|
OR1K_DELAYED_NOP(l.jr r9)
|