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[/] [openrisc/] [trunk/] [orpsocv2/] [sw/] [tests/] [sdram/] [sim/] [sdram-bankrows.c] - Diff between revs 349 and 393

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Rev 349 Rev 393
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/*
 
 * SDRAM row/bank test
 
 *
 
 * Tests accessing different rows on different banks
 
 *
 
*/
 
 
 
#include "cpu-utils.h"
 
#include "board.h"
 
#include "sdram.h"
 
 
 
#define NUM_SDRAM_BANKS 4
 
#define SDRAM_BANK_SIZE (SDRAM_SIZE / NUM_SDRAM_BANKS)
 
#define SDRAM_BANK_START(bank) ((SDRAM_BANK_SIZE*bank) + SDRAM_BASE)
 
#define SDRAM_BANK_LAST_WORD(bank) ((SDRAM_BANK_START((bank+1)))-4)
 
#define SDRAM_BANK_MIDDLE_WORD(bank) ((SDRAM_BANK_START((bank)))+(SDRAM_BANK_SIZE/2))
 
 
 
int main()
 
{
 
 
 
  REG32(SDRAM_BANK_LAST_WORD(0))   = 0x00001111;
 
  REG32(SDRAM_BANK_MIDDLE_WORD(1)) = 0x22223333;
 
  REG32(SDRAM_BANK_LAST_WORD(1))   = 0x44445555;
 
  REG32(SDRAM_BANK_MIDDLE_WORD(2)) = 0x66667777;
 
  REG32(SDRAM_BANK_LAST_WORD(2))   = 0x88889999;
 
  REG32(SDRAM_BANK_MIDDLE_WORD(3)) = 0xaaaabbbb;
 
  REG32(SDRAM_BANK_LAST_WORD(3))   = 0xccccdddd;
 
 
 
  unsigned long read_result = 0;
 
  read_result += REG32(SDRAM_BANK_LAST_WORD(0));
 
  read_result += REG32(SDRAM_BANK_MIDDLE_WORD(1));
 
  read_result += REG32(SDRAM_BANK_LAST_WORD(1));
 
  read_result += REG32(SDRAM_BANK_MIDDLE_WORD(2));
 
  read_result += REG32(SDRAM_BANK_LAST_WORD(2));
 
  read_result += REG32(SDRAM_BANK_MIDDLE_WORD(3));
 
  read_result += REG32(SDRAM_BANK_LAST_WORD(3));
 
  report(read_result);
 
  // read_result should be 0xCCCD4441
 
  exit((read_result^0x4ccd444c)); /* should result in 8000000d */
 
}
 
 
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