Hi Jeffrey,

When I use CodeWarrior to check the Register RCWLR and RCWHR, the bits values of both RCWLR and RCWHR are different from what I set, the expected values are RCWLR(04240000) and RCWHR(B450A000), but the values we get are RCWLR(04040404) and RCWHR(B4B4B4B4), it seems that it only read the first byte value, I wonder if how the cpu read the HRCW in Flash and set the RCWLR and RCWHR Register?Is there something wrong with our Flash? I have put our HRCW_8349 file and the default HRCW_default file in the attachment, please help me check them. Thanks a lot!

Best Regards, Simon Yang

2005/11/23, Ho Jeffrey-r26191 r26191@freescale.com:

Hi Yang,

Have you try to use the hw test to check if your DDR is setup correctly?

Before do any flash programming, check you hw.

Regards, Jeffrey Ho

-----Original Message----- From: u-boot-users-admin@lists.sourceforge.net [mailto:u-boot-users-admin@lists.sourceforge.net] On Behalf Of Simon Yang Sent: Wednesday, November 23, 2005 10:54 PM To: U-Boot-Users@lists.sourceforge.net Subject: [U-Boot-Users] MPC8347 DDR SDRAM problem!

Hi All,

Now I am debugging our board, CPU is MPC8347 and we use 256M DDR SDRAM(DIMM), the Flash port size is 8 bit, currently there is nothing in the Flash, we use the default Hard Code Reset Configuration Word(101), we use MetroWerks USBTAP to connect to the JTAG and we modify the 8349SYS_init_flash_uboot.cfg file, when we erase the Flash a message "Error read memory" shows in CodeWarrior, then open "Command Windows" in CodeWarrior and use "mem 10000" but "error" get, we measure the DDR CLK it is ok. In the 8349SYS_init_flash_uboot.cfg file we modify as follow:

#setMMRBaseAddr 0xFF400000 writereg MBAR 0xFF400000

# change internal MMR base from 0xff400000 (reset value) to 0xe0000000 writemem.l 0xff400000 0xe0000000 # IMMRBAR = 0xe0000000

#setMMRBaseAddr 0xe0000000 writereg MBAR 0xe0000000

############################################## # System Configuration - Local Access Windows ##############################################

# Local Bus Local Access Windows ################################# # WINDOW 0 - configuration space - Initially mapped by RCWHR[BMS], relocated to 0xe0000000 writemem.l 0xe0000020 0xe0000000 # LBLAWBAR0 - begining at 0xe0000000

# WINDOW 1 - FLASH writemem.l 0xe0000028 0xFE000000 # LBLAWBAR1 - begining at 0xfe000000 writemem.l 0xe000002c 0x80000016 # LBLAWAR1 - enable, size = 8MB

# DDR Local Access Windows # WINDOW 0 - 1st DDR SODIMM writemem.l 0xe00000a0 0x00000000 # DDRLAWBAR0 - begining at 0x00000000 writemem.l 0xe00000a4 0x8000001b # DDRLAWAR0 - enable, size = 256MB

#CS0_BNDS writemem.l 0xe0002000 0x0000000F #CS0_CONFIG(rows 13,columns 10) writemem.l 0xe0002080 0x80000102

# TIMING_CONFIG_1 writemem.l 0xe0002108 0x37343321

# DDR_SDRAM_MODE writemem.l 0xe0002118 0x20000162 # DDR_SDRAM_INTERVAL writemem.l 0xe0002124 0x045b0100 sleep 1200 # enable the DDR memory controller writemem.l 0xe0002110 0xc2000000

# CS0 - 8MB FLASH writemem.l 0xe0005000 0xFE000801 # BR0 base address at 0xFE000000, port size 8 bit, GPCM, valid writemem.l 0xe0005004 0xFE006ff7 # OR0 8MB flash size, 15 w.s., timing relaxed

# LBCR - local bus enable writemem.l 0xe00050d0 0x00000000

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