82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/*
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* Copyright (c) 2008-2014 Travis Geiselbrecht
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <reg.h>
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#include <stdio.h>
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#include <kernel/thread.h>
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#include <dev/uart.h>
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#include <platform.h>
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#include <platform/debug.h>
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#include <platform/zynq.h>
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#include <target/debugconfig.h>
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#include <reg.h>
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/* DEBUG_UART must be defined to 0 or 1 */
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#if defined(DEBUG_UART) && DEBUG_UART == 0
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#define DEBUG_UART_BASE UART0_BASE
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#elif defined(DEBUG_UART) && DEBUG_UART == 1
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#define DEBUG_UART_BASE UART1_BASE
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#else
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#error define DEBUG_UART to something valid
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#endif
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void platform_dputc(char c)
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{
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if (c == '\n')
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uart_putc(DEBUG_UART, '\r');
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uart_putc(DEBUG_UART, c);
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}
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int platform_dgetc(char *c, bool wait)
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{
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int ret = uart_getc(DEBUG_UART, wait);
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if (ret == -1)
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return -1;
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*c = ret;
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return 0;
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}
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/* zynq specific halt */
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void platform_halt(platform_halt_action suggested_action,
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platform_halt_reason reason)
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{
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switch (suggested_action) {
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default:
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case HALT_ACTION_SHUTDOWN:
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case HALT_ACTION_HALT:
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printf("HALT: spinning forever... (reason = %d)\n", reason);
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enter_critical_section();
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for(;;)
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arch_idle();
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break;
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case HALT_ACTION_REBOOT:
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printf("REBOOT\n");
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enter_critical_section();
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for (;;) {
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zynq_slcr_unlock();
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SLCR->PSS_RST_CTRL = 1;
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}
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break;
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}
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}
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