/********************************************************************************************
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* File: bootstrap.c
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* Version: 1.0.0
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* Copyright: 2011 (c) Guo Wenxue <guowenxue@gmail.com>
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* Description: This C code is the first stage bootloader(named bootstrap)
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main code, test on FL2440 board.
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* ChangeLog: 1, Release initial version on "Tue Jul 12 16:43:18 CST 2011"
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*
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*******************************************************************************************/
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#include <common.h>
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#include <nand.h>
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int dbg_mode(struct boot_nand_t *nand);
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unsigned long do_go_exec (ulong (*entry)(int, char * const []), int argc, char * const argv[]);
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void print_buf(char *prompt, char *buf, int len)
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{
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int i;
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printf("%s %d bytes\n", prompt, len);
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printf("------------------------------------------------------------------------------------\n");
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for(i=0; i<len; i++)
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{
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printf("0x%02x ", buf[i]);
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if(! (i+1)%32 )
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printf("\n");
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}
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printf("\n");
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printf("------------------------------------------------------------------------------------\n");
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}
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int bootstrap_main(void)
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{
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struct boot_nand_t nand;
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char buf[0x20000];
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ulong test_block = 0x0; /*0x1860000 is bad block*/
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// char *addr = (char *)TEXT_BASE;
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char *addr = (char *)0x36000000;
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serial_init();
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init_led_beep();
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printf("\bBootstrap Version 0.0.1\n");
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turn_led_on(LED0);
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if (nand_init(&nand) < 0)
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{
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printf("Nandflash init failure.\n");
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return -1;
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}
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#if 0
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nand_scrub(&nand);
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nand_erase(&nand, test_block, 0x20000, SKIP_BAD_BLOCK);
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memset(buf,0x00, sizeof(buf));
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nand_read_spare(&nand, test_block, 64, buf);
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print_buf("Spare area read:", buf, 64);
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nand_read(&nand, test_block, nand.page_size, buf);
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print_buf("Whole page Write:", buf, nand.page_size);
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#endif
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#if 0
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/*Write spare area*/
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memset(buf,0x44,sizeof(buf));
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nand_write(&nand, test_block, nand.page_size, buf);
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nand_read(&nand, test_block, nand.page_size, buf);
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print_buf("Whole page Write:", buf, nand.page_size);
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nand_write_spare(&nand, 0x0000, 64, buf);
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nand_read_spare(&nand, test_block, 64, buf);
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print_buf("Spare area read:", buf, 64);
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#endif
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dbg_mode(&nand);
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nand_read(&nand, LAUNCHER_NAND_ADDR, 1024, addr);
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do_go_exec((void *)addr, 0, NULL);
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while (1)
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;
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return 0;
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}
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__attribute__((weak))
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unsigned long do_go_exec (ulong (*entry)(int, char * const []), int argc, char * const argv[])
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{
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printf ("## Starting application at 0x%08lX ...\n", entry);
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return entry (argc, argv);
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}
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int dbg_mode(struct boot_nand_t *nand)
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{
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long size;
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char *addr = (char *)TEXT_BASE;
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ulong erase_size;
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dbg_print("Comes into bootstrap debug mode and Xmodem wait for receive new launcher:\n");
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beep(1);
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size = xmodem_recv(addr);
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dbg_print("\tBootstrap Receive Launcher file size: %ld bytes\n", size);
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erase_size = (size/nand->block_size + 1)*nand->block_size;
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nand_erase(nand, LAUNCHER_NAND_ADDR, erase_size, SKIP_BAD_BLOCK);
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nand_write(nand, LAUNCHER_NAND_ADDR, size, addr);
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return 0;
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}
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