112 lines
2.6 KiB
C
112 lines
2.6 KiB
C
/*
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* sys-copyself.c
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*
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* Copyright(c) 2007-2018 Jianjun Jiang <8192542@qq.com>
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* Official site: http://xboot.org
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* Mobile phone: +86-18665388956
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* QQ: 8192542
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <stdint.h>
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extern unsigned char __image_start;
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extern unsigned char __image_end;
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extern void return_to_fel(void);
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extern void sys_mmu_init(void);
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extern void sys_uart_putc(char c);
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extern void sys_spi_flash_init(void);
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extern void sys_spi_flash_exit(void);
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extern void sys_spi_flash_read(int addr, void * buf, int count);
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enum {
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BOOT_DEVICE_FEL = 0,
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BOOT_DEVICE_SPI = 1,
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BOOT_DEVICE_MMC = 2,
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};
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static int get_boot_device(void)
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{
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uint32_t * t = (void *)0x00000058;
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if(t[0] == 0x1)
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return BOOT_DEVICE_FEL;
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return BOOT_DEVICE_SPI;
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}
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void sys_copyself(void)
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{
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int d = get_boot_device();
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void * mem;
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uint32_t size;
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if(d == BOOT_DEVICE_FEL)
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{
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sys_uart_putc('B');
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sys_uart_putc('o');
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sys_uart_putc('o');
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sys_uart_putc('t');
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sys_uart_putc(' ');
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sys_uart_putc('t');
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sys_uart_putc('o');
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sys_uart_putc(' ');
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sys_uart_putc('F');
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sys_uart_putc('E');
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sys_uart_putc('L');
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sys_uart_putc(' ');
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sys_uart_putc('m');
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sys_uart_putc('o');
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sys_uart_putc('d');
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sys_uart_putc('e');
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sys_uart_putc('\r');
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sys_uart_putc('\n');
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return_to_fel();
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}
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else if(d == BOOT_DEVICE_SPI)
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{
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sys_uart_putc('B');
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sys_uart_putc('o');
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sys_uart_putc('o');
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sys_uart_putc('t');
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sys_uart_putc(' ');
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sys_uart_putc('t');
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sys_uart_putc('o');
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sys_uart_putc(' ');
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sys_uart_putc('S');
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sys_uart_putc('P');
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sys_uart_putc('I');
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sys_uart_putc(' ');
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sys_uart_putc('m');
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sys_uart_putc('o');
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sys_uart_putc('d');
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sys_uart_putc('e');
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sys_uart_putc('\r');
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sys_uart_putc('\n');
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mem = (void *)&__image_start;
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size = &__image_end - &__image_start;
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sys_mmu_init();
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sys_spi_flash_init();
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sys_spi_flash_read(0, mem, size);
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sys_spi_flash_exit();
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}
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else if(d == BOOT_DEVICE_MMC)
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{
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mem = (void *)&__image_start;
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size = (&__image_end - &__image_start + 512) >> 9;
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}
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}
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