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Diffstat (limited to 'board/RPXlite_dw/README')
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diff --git a/board/RPXlite_dw/README b/board/RPXlite_dw/README deleted file mode 100644 index 9e2d0f42a0..0000000000 --- a/board/RPXlite_dw/README +++ /dev/null @@ -1,161 +0,0 @@ - -After following the step of Yoo. Jonghoon and Wolfgang Denk, -I ported u-boot on RPXlite DW version board: RPXlite_DW or LITE_DW. - -There are at least three differences between the Yoo-ported RPXlite and the RPXlite_DW. - -Board(in U-Boot) version(in EmbeddedPlanet) CPU SDRAM FLASH -RPXlite RPXlite CW 850 16MB 4MB -RPXlite_DW RPXlite DW(EP 823 H1 DW) 823e 64MB 16MB - -This fireware is specially coded for EmbeddedPlanet Co. Software Development -Platform(RPXlite DW),which has a NEC NL6448BC20-08 LCD panel. - -It has the following three features: - -1. 64MHz/48MHz system frequence setting options. -The default setting is 48MHz.To get a 64MHz u-boot,just add -'64' in make command,like - -make distclean -make RPXlite_DW_64_config -make all - -2. CONFIG_ENV_IS_IN_FLASH/CONFIG_ENV_IS_IN_NVRAM - -The default environment parameter is stored in FLASH because it is a common choice for -environment parameter.So I make NVRAM as backup parameter storeage.The reason why I -didn't use EEPROM for ENV is that PlanetCore V2.0 use EEPROM as environment parameter -home.Because of the possibility of using two firewares on this board,I didn't -'disturb' EEPROM.To get NVRAM support,you may use the following build command: - -make distclean -make RPXlite_DW_NVRAM_config -make all - -3. LCD panel support - -To support the Platform better,I added LCD panel(NL6448BC20-08) function. -For the convenience of debug, CONFIG_PERBOOT was supported. So you just -perss ENTER if you want to get a serial console in boot downcounting. -Then you can switch to LCD and serial console freely just typing -'run lcd' or 'run ser'. They are only vaild when CONFIG_LCD was enabled. - -To get a LCD support u-boot,you can do the following: - -make distclean -make RPXlite_DW_LCD_config -make all - -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -The basic make commands could be: - -make RPXlite_DW_config -make RPXlite_DW_64_config -make RPXlite_DW_LCD_config -make RPXlite_DW_NVRAM_config - -BTW,you can combine the above features together and get a workable u-boot to meet your need. -For example,to get a 64MHZ && ENV_IS_IN_FLASH && LCD panel support u-boot,you can type: - -make RPXlite_DW_NVRAM_64_LCD_config -make all - -So other combining make commands could be: - -make RPXlite_DW_NVRAM_64_config -make RPXlite_DW_NVRAM_LCD_config -make RPXlite_DW_64_LCD_config - -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - -The boot process by "make RPXlite_DW_config" could be: - -U-Boot 1.1.2 (Aug 29 2004 - 15:11:27) - -CPU: PPC823EZTnnB2 at 48 MHz: 16 kB I-Cache 8 kB D-Cache -Board: RPXlite_DW -DRAM: 64 MB -FLASH: 16 MB -*** Warning - bad CRC, using default environment - -In: serial -Out: serial -Err: serial -Net: SCC ETHERNET -u-boot> - -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - -A word on the U-Boot environment variable setting and usage : - -In the beginning, you could just need very simple default environment variable setting, -like[include/configs/RPXlite.h] : - -#define CONFIG_BOOTCOMMAND \ - "bootp; " \ - "setenv bootargs root=/dev/nfs rw nfsroot=${serverip}:${rootpath} " \ - "ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}::off; " \ - "bootm" - -This is enough for kernel NFS test. But as debug process goes on, you would expect -to save some time on environment variable setting and u-boot/kernel updating. -So the default environment variable setting would become more complicated. Just like -the one I did in include/configs/RPXlite_DW.h. - -Two u-boot commands, ku and uu, should be careful to use. They were designed to update -kernel and u-boot image file respectively. You must tftp your image to default address -'100000' and then use them correctly. Yeah, you can create your own command to do this -job. :-) The example u-boot image updating process could be : - -u-boot>t 100000 RPXlite_DW_LCD.bin -Using SCC ETHERNET device -TFTP from server 172.16.115.6; our IP address is 172.16.115.7 -Filename 'RPXlite_DW_LCD.bin'. -Load address: 0x100000 -Loading: ############################# -done -Bytes transferred = 144700 (2353c hex) -u-boot>run uu -Un-Protect Flash Sectors 0-4 in Bank # 1 -Erase Flash Sectors 0-4 in Bank # 1 -.... done -Copy to Flash... done -ff000000: 27051956 552d426f 6f742031 2e312e32 '..VU-Boot 1.1.2 -ff000010: 20284175 67203239 20323030 34202d20 (Aug 29 2004 - -ff000020: 31353a32 303a3238 29000000 00000000 15:20:28)....... -ff000030: 00000000 00000000 00000000 00000000 ................ -ff000040: 00000000 00000000 00000000 00000000 ................ -ff000050: 00000000 00000000 00000000 00000000 ................ -ff000060: 00000000 00000000 00000000 00000000 ................ -ff000070: 00000000 00000000 00000000 00000000 ................ -ff000080: 00000000 00000000 00000000 00000000 ................ -ff000090: 00000000 00000000 00000000 00000000 ................ -ff0000a0: 00000000 00000000 00000000 00000000 ................ -ff0000b0: 00000000 00000000 00000000 00000000 ................ -ff0000c0: 00000000 00000000 00000000 00000000 ................ -ff0000d0: 00000000 00000000 00000000 00000000 ................ -ff0000e0: 00000000 00000000 00000000 00000000 ................ -ff0000f0: 00000000 00000000 00000000 00000000 ................ -u-boot updating finished -u-boot> - -Also for environment updating, 'run eu' could let you erase OLD default environment variable -and then use the working u-boot environment setting. - -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - -Finally, if you want to keep the serial port to possible debug on spot for deployment, you -just need to enable 'DEPLOYMENT' in RPXlite_DW.h as 'DEBUG' does. Only the special string -defined by CONFIG_AUTOBOOT_STOP_STR like 'st' can stop the autoboot. - -I'd like to extend my heartfelt gratitute to kind people for helping me work it out. -I would particually thank Wolfgang Denk for his nice help. - -Enjoy, - -Sam Song, samsongshu@yahoo.com.cn -Institute of Electrical Machinery and Controls -Shanghai University - -Oct. 11, 2004 |