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+After several heart-struck failure, I got one workable way to program
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+each other in FLASH between PlanetCore and U-Boot.
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+
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+Hardware Platform : RPXlite DW(EP 823 H1 DW)
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+
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+1. From U-Boot to PlanetCore
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+
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+Utilities : PlanetCore Boot Loader - PCL200.mot
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+
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+[root@sam tftpboot]# ppc_8xx-objcopy -O ppcboot
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+PCL200.mot pcl200.bin
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+
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+[Target Operation]
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+u-boot>t 100000 pcl200.bin
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+u-boot>go 0x100000
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+## Starting application at 0x00100000 ...
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+
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+MPC8xx PlanetCore Flash Burner v2.00
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+Copyright 2001 Embedded Planet. All rights reserved.
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+
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+Construct Flash Device.....done.
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+
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+
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+Program MPC8xx PlanetCore Boot Loader v2.00
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+Built Sep 19, 2001 at 14:34:42
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+Image located from FC000000 to FC01B5D1.
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+(Skipping an image, only loading low boot image)
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+
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+Low boot board detected, skipping high boot image.
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+Erasing, programming and verifying will start in 20
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+seconds
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+Press P to start immediately or ESC to cancel
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+Press Space or Enter for more options.
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+..............
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+
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+Erasing
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+Programming
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+FLASH programmed successfully!
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+Press R to induce a hard reset
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+
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+MPC8xx PlanetCore Boot Loader v2.00
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+Copyright 2001 Embedded Planet. All rights reserved.
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+DRAM available size = 64 MB
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+wvCV
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+DRAM OK
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+>
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+
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+2. From PlanetCore to U-Boot
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+
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+Utilities : PlanetCore FLASH Burner - PCB200.mot
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+
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+Use Flash Burner to finish the work:
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+
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+First, TFTP the U-Boot image file to RAM; For example,
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+RPXlite_DW.bin to 0x400000
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+Second, TFTP FLASH Burner to RAM; For example,
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+0x100000
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+Third, run the FLASH Burner and Program the U-Boot
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+image into the correct location in FLASH.
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+
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+[Target Operation]
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+MPC8xx PlanetCore Boot Loader v2.00
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+Copyright 2001 Embedded Planet. All rights reserved.
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+DRAM available size = 64 MB
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+wvCV
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+DRAM OK
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+>t
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+Load using tftp via Ethernet
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+Enter server IP address <172.16.115.6> :
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+Enter server filename <PCL200.mot> : RPXlite_DW.bin
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+Enter (B)inary or (S)record input mode <S> : B
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+Enter address offset : <00400000 hex> :
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+
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+Total bytes = 120096 in 232184 uSecs
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+Loaded addresses 00400000 through 0041D51F.
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+Start address = 00400000
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+>t
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+Load using tftp via Ethernet
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+Enter server IP address <172.16.115.6> :
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+Enter server filename <RPXlite_DW.bin> : PCB200.mot
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+Enter (B)inary or (S)record input mode <B> : S
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+Enter address offset : <00000000 hex> :
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+.512.1024..2048....4096.....
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+Total bytes = 326280 in 2570249 uSecs
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+Loaded addresses 00100000 through 0011BB51.
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+Start address = 00100000
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+>go
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+[Go 00100000]
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+
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+MPC8xx PlanetCore Flash Burner v2.00
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+Copyright 2001 Embedded Planet. All rights reserved.
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+
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+Construct Flash Device.....done.
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+
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+Bad start address
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+Start = 0xFFFFFFFF, target = 0xFFFFFFFF, length =
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+0xFFFFFFFF
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+Forcing Menu Interface
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+
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+h[elp] Show commands.
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+c[ode] Show information on code to be loaded.
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+di[splay] Display all flash sections.
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+du[mp] Dump memory. d ? for more info.
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+e[rase] Erase flash sections.
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+f[ill] Fill flash sections.
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+im[age] Toggle load high, low, or both flash
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+images.
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+in[fo] Show flash information.
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+ma[p] Show memory map.
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+mo[dify] Modify memory. m ? for more info.
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+p[rogram] Erase, program, and verify now.
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+reset Restart the loader.
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+s[how] Show flash sections to erase and program.
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+t[est] Test flash sections.
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+q[uit] Quit without programming.
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+#program 400000 ff000000 1D51F
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+doProgram( 400000 ff000000 1D51F )
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+
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+Start = 0x00400000, target = 0xFF000000, length =
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+0x0001D51F
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+Erasing sector 0xFF000000, length 0x008000.
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+Erasing sector 0xFF008000, length 0x008000.
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+Erasing sector 0xFF010000, length 0x008000.
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+Erasing sector 0xFF018000, length 0x008000.
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+Programming FF000000 through FF01D51E
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+FLASH programmed successfully!
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+Press R to induce a hard reset
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+
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+Forcing Hard Reset by MachineCheck and
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+ResetOnCheckstop...
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+
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+U-Boot 1.1.2 (Aug 29 2004 - 15:11:27)
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+
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+CPU: PPC823EZTnnB2 at 48 MHz: 16 kB I-Cache 8 kB
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+D-Cache
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+Board: RPXlite_DW
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+DRAM: 64 MB
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+FLASH: 16 MB
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+*** Warning - bad CRC, using default environment
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+
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+In: serial
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+Out: serial
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+Err: serial
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+Net: SCC ETHERNET
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+u-boot>
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+
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+-------------------------------------------------
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+
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+Well, sometimes network function of PlanetCore couldn't work when
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+switching from U-Boot to PlanetCore. For example, you couldn't
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+download a file from HOST PC via TFTP. Don't worry, just restart your
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+HOST PC and everything would work as smooth as clockwork. I don't
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+know the reason WHY:-)
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+
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+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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+Merry Christmas and Happy New Year!
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+
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+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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+
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+=====
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+Best regards,
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+
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+Sam
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Wolfgang Denk