/*
* Copyright 2008 Freescale Semiconductor, Inc.
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * Version 2 as published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
+#include <i2c.h>
-#include <asm/fsl_ddr_sdram.h>
-#include <asm/fsl_ddr_dimm_params.h>
+#include <fsl_ddr_sdram.h>
+#include <fsl_ddr_dimm_params.h>
void fsl_ddr_board_options(memctl_options_t *popts,
dimm_params_t *pdimm,
popts->half_strength_driver_enable = 0;
}
-#if !defined(CONFIG_SPD_EEPROM)
+#ifdef CONFIG_SPD_EEPROM
+/*
+ * Workaround for hardware errata. An i2c address conflict
+ * existed on earlier boards; the workaround moved the DDR
+ * SPD from 0x51 to 0x53. So we try and read 0x53 1st, and
+ * if that fails, then fall back to reading at 0x51.
+ */
+void get_spd(generic_spd_eeprom_t *spd, u8 i2c_address)
+{
+ int ret;
+
+#ifdef ALT_SPD_EEPROM_ADDRESS
+ if (i2c_address == SPD_EEPROM_ADDRESS) {
+ ret = i2c_read(ALT_SPD_EEPROM_ADDRESS, 0, 1, (uchar *)spd,
+ sizeof(generic_spd_eeprom_t));
+ if (ret == 0)
+ return; /* Good data at 0x53 */
+ memset(spd, 0, sizeof(generic_spd_eeprom_t));
+ }
+#endif
+ ret = i2c_read(i2c_address, 0, 1, (uchar *)spd,
+ sizeof(generic_spd_eeprom_t));
+ if (ret) {
+ printf("DDR: failed to read SPD from addr %u\n", i2c_address);
+ memset(spd, 0, sizeof(generic_spd_eeprom_t));
+ }
+}
+
+#else
/*
* fixed_sdram init -- doesn't use serial presence detect.
* Assumes 256MB DDR2 SDRAM SODIMM, without ECC, running at DDR400 speed.
*/
phys_size_t fixed_sdram(void)
{
- volatile ccsr_ddr_t *ddr = (void *)(CONFIG_SYS_MPC85xx_DDR_ADDR);
+ struct ccsr_ddr __iomem *ddr =
+ (struct ccsr_ddr __iomem *)(CONFIG_SYS_FSL_DDR_ADDR);
out_be32(&ddr->cs0_bnds, 0x0000007f);
out_be32(&ddr->cs1_bnds, 0x008000ff);