|
@@ -2,11 +2,11 @@
|
|
|
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 three differences between the Yoo-ported RPXlite and the RPXlite_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
|
|
|
+Board(in U-Boot) version(in EmbeddedPlanet) CPU SDRAM FLASH
|
|
|
RPXlite RPXlite CW 850 16MB 4MB
|
|
|
-RPXlite_DW RPXlite DW 823e 64MB 16MB
|
|
|
+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.
|
|
@@ -17,6 +17,7 @@ It has the following three features:
|
|
|
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
|
|
|
|
|
@@ -28,19 +29,21 @@ didn't use EEPROM for ENV is that PlanetCore V2.0 use EEPROM as environment para
|
|
|
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.But bewear of
|
|
|
-the fact that once you build this support and program it to FLASH,you should make sure
|
|
|
-you put workable kernel and ramdisk at the right place in FLASH or through NFS.
|
|
|
-Otherwise, you must erase this fireware manually via BDI2000 or ICE tools.So this
|
|
|
-function is used for deployment and demo only.Pls look before you leap.
|
|
|
+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
|
|
|
|
|
@@ -68,7 +71,7 @@ make RPXlite_DW_64_LCD_config
|
|
|
|
|
|
The boot process by "make RPXlite_DW_config" could be:
|
|
|
|
|
|
-U-Boot 1.1.1 (Jun 8 2004 - 11:16:30)
|
|
|
+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
|
|
@@ -84,6 +87,68 @@ u-boot>
|
|
|
|
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
|
|
+A word on the U-Boot enviroment variable setting and usage :
|
|
|
+
|
|
|
+In the beginning, you could just need very simple defult 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.
|
|
|
|
|
@@ -93,4 +158,4 @@ Sam Song, samsongshu@yahoo.com.cn
|
|
|
Institute of Electrical Machinery and Controls
|
|
|
Shanghai University
|
|
|
|
|
|
-June 8,2004
|
|
|
+Oct. 11, 2004
|