ddr_test.c

来自「TI的DM6446的硬件平台搭建的相关例子」· C语言 代码 · 共 34 行

#include "davincievm.h"

extern memfill32( Uint32 start, Uint32 len, Uint32 val );
extern memaddr32( Uint32 start, Uint32 len );
extern meminvaddr32( Uint32 start, Uint32 len );



Uint32 ddr_test( )
{
    Uint32 ddrloop;
    Uint32 retcode = 0;
	Uint32 ddr_base=0x80000000;       // DDR memory space
	Uint32 ddr_size = 0x100000;       // 1 MB
	for(ddrloop=0;ddrloop<0xf0;ddrloop++)
	{
	retcode |= memfill32( ddr_base, ddr_size, 0xFFFFFFFF );
//	retcode |= memaddr32( ddr_base, ddr_size );
 //   ddr_base=0x87000000;       // DDR memory space
//	ddr_size = 0x100000;       // 1 MB
    retcode |= memfill32( ddr_base, ddr_size, 0xAAAAAAAA );
//	retcode |= memaddr32( ddr_base, ddr_size );
    retcode |= memfill32( ddr_base, ddr_size, 0x55555555 );
    retcode |= memfill32( ddr_base, ddr_size, 0x00000000 );

    retcode |= memaddr32( ddr_base, ddr_size );
    retcode |= meminvaddr32( ddr_base, ddr_size );
	ddr_base+=ddr_size;
	printf("address %x is OK!\n" ,ddr_base);
	}
    return retcode;
}