Hi all,
I have spent quite some time trying to move from U-Boot 1.2 to a newer
version.. I am stuck at the initialization of the ram. The ram checksum
fails and gives me a "total memory of 0". (the board has 512MB and work
when booting uboot 1.2)
can anyone pls. point me in the right direction?
My console output is as follows:
U-Boot 2008.10-00334-g90665e3-dirty-svn1154 (Jan 6 2009 -
13:40:47)
CPU: 8548E, Version: 1.1,
(0x80390011)
Core: E500, Version: 1.0,
(0x80210010)
Clock
Configuration:
CPU:990 MHz, CCB:396
MHz,
DDR:198 MHz (396 MT/s data rate), LBC:49.500
MHz
L1: D-cache 32 kB
enabled
I-cache 32 kB
enabled
Board: Equus
MPC8548
PCI1: 64 bit, 66 MHz,
sync
I2C:
ready
DRAM:
Initializing
fsl_ddr_sdram
starting at step 1
(STEP_GET_SPD)
SPD checksum unexpected. Checksum in SPD = 27, computed SPD =
74
DIMM 0: failed
checksum
Error: compute_dimm_parameters non-zero returned FATAL value for
memctl=0 dimm=0
Programming controller
0
No dimms present on controller 0; skipping
programming
total_memory =
0
DDR: only 16M, 32M, 64M, 128M, 256M, 512M, 1G and 2G are
supported.
DDR: 64
MB
Top of RAM usable for U-Boot at:
04000000
Reserving 266k for U-Boot at:
03fb0000
Reserving 136k for malloc() at:
03f8e000
Reserving 72 Bytes for Board Info at:
03f8dfb8
Reserving 64 Bytes for Global Data at:
03f8df78
Stack Pointer at:
03f8df58
New Stack Pointer is: 03f8df58
My DDR configuration is as follows:
/* DDR Setup */
#define CONFIG_VERY_BIG_RAM
#define CONFIG_FSL_DDR2
#undef CONFIG_FSL_DDR_INTERACTIVE
#define CONFIG_SPD_EEPROM
#define CONFIG_DDR_SPD
#define CONFIG_DDR_DLL
#define CONFIG_DDR_2T_TIMING
#define CONFIG_DDR_ECC
#undef CONFIG_ECC_INIT_VIA_DDRCONTROLLER
#define CONFIG_MEM_INIT_VALUE 0xDeadBeef
#define CONFIG_SYS_DDR_SDRAM_BASE 0x00000000
#define CONFIG_SYS_SDRAM_BASE
CONFIG_SYS_DDR_SDRAM_BASE
#define CONFIG_NUM_DDR_CONTROLLERS 1
#define CONFIG_DIMM_SLOTS_PER_CTLR 1
#define CONFIG_CHIP_SELECTS_PER_CTRL 2
thanks pieter
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