ddr_test.c

SEED-DaVinci_EVM ddr 开发源代码

#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 retcode = 0;
    Uint32 ddr_base = 0x80000000;       // DDR memory space
    Uint32 ddr_size = 0x100000;       // 1 MB

    retcode |= memfill32( ddr_base, ddr_size, 0xFFFFFFFF );
    retcode |= memfill32( ddr_base, ddr_size, 0xAAAAAAAA );
    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 );

    return retcode;
}