73 lines
1.3 KiB
C
73 lines
1.3 KiB
C
#include <string.h>
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#define _FLASH_PRIVATE_
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#include <cyg/io/flash.h>
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int myprintf(char *format, ...)
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{
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return 0;
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}
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extern char _start_bss_clear;
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extern char __bss_end__;
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int init()
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{
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// set up runtime environment
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char *t;
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for (t=&_start_bss_clear; t<&__bss_end__; t++)
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{
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*t=0;
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}
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return flash_init((_printf *)&myprintf);
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}
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int checkFlash(void *addr, int len)
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{
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// Return error for illegal addresses
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if ((addr<flash_info.start)||(addr>flash_info.end))
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return FLASH_ERR_INVALID;
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if ((((cyg_uint8 *)addr)+len)>(cyg_uint8 *)flash_info.end)
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return FLASH_ERR_INVALID;
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return FLASH_ERR_OK;
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}
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int erase(void *address, int len)
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{
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int retval;
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void *failAddress;
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retval=checkFlash(address, len);
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if (retval!=0)
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return retval;
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retval=init();
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if (retval!=0)
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return retval;
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return flash_erase(address, len, &failAddress);
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}
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extern char _end;
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// Data follows immediately after program, long word aligned.
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int program(void *buffer, void *address, int len)
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{
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int retval;
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void *failAddress;
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retval=checkFlash(address, len);
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if (retval!=0)
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return retval;
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retval=init();
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if (retval!=0)
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return retval;
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//int flash_program(void *_addr, void *_data, int len, void **err_addr)
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return flash_program(address, buffer, len, &failAddress);
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}
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