+ int m, row, col, bank, i;
+ unsigned long start, end;
+ uint32_t mccr1;
+ uint32_t mear1 = 0, emear1 = 0, msar1 = 0, emsar1 = 0;
+ uint32_t mear2 = 0, emear2 = 0, msar2 = 0, emsar2 = 0;
+ uint8_t mber = 0;
+
+ i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE);
+
+ if (i2c_reg_read (0x50, 2) != 0x04) return 0; /* Memory type */
+ m = i2c_reg_read (0x50, 5); /* # of physical banks */
+ row = i2c_reg_read (0x50, 3); /* # of rows */
+ col = i2c_reg_read (0x50, 4); /* # of columns */
+ bank = i2c_reg_read (0x50, 17); /* # of logical banks */
+
+ CONFIG_READ_WORD(MCCR1, mccr1);
+ mccr1 &= 0xffff0000;
+
+ start = CFG_SDRAM_BASE;
+ end = start + (1 << (col + row + 3) ) * bank - 1;
+
+ for (i = 0; i < m; i++) {
+ mccr1 |= ((row == 13)? 2 : (bank == 4)? 0 : 3) << i * 2;
+ if (i < 4) {
+ msar1 |= ((start >> 20) & 0xff) << i * 8;
+ emsar1 |= ((start >> 28) & 0xff) << i * 8;
+ mear1 |= ((end >> 20) & 0xff) << i * 8;
+ emear1 |= ((end >> 28) & 0xff) << i * 8;
+ } else {
+ msar2 |= ((start >> 20) & 0xff) << (i-4) * 8;
+ emsar2 |= ((start >> 28) & 0xff) << (i-4) * 8;
+ mear2 |= ((end >> 20) & 0xff) << (i-4) * 8;
+ emear2 |= ((end >> 28) & 0xff) << (i-4) * 8;
+ }
+ mber |= 1 << i;
+ start += (1 << (col + row + 3) ) * bank;
+ end += (1 << (col + row + 3) ) * bank;