mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 02:51:00 +00:00
31 lines
1.2 KiB
Text
31 lines
1.2 KiB
Text
|
Hi,
|
||
|
|
|
||
|
|
so this is the port to the Embedded Planet RPX Super Board.
|
||
|
|
|
||
|
|
ATTENTION
|
||
|
|
This code is only tested on the AY-Version, which is an early release with some
|
||
|
|
hardware bugs. The main problem is that this board uses the default Hard Reset
|
||
|
|
Configuration Word and not the 4 bytes located at start of FLASH because at
|
||
|
|
0xFE000000 is no FLASH. The FLASH consists out of 4 chips each 16bits wide. Be
|
||
|
|
carefull, the bytes are swapped. So DQ0-7 is the high byte, DQ8-15 ist the low
|
||
|
|
byte.
|
||
|
|
|
||
|
|
The icache can only manually be enabled after reset.
|
||
|
|
The FLASH and main SDRAM is working with icache enabled.
|
||
|
|
The local SDRAM can only be used as data memory when icache is enabled.
|
||
|
|
If U-Boot runs in local SDRAM, TFTP does not work.
|
||
|
|
The functions in mii_phy.c are all working. Call mii_phy_discover() out of
|
||
|
|
eth_init() and solve the linker error.
|
||
|
|
I2C, RTC/NVRAM and PCMCIA are not working yet.
|
||
|
|
|
||
|
|
TODO
|
||
|
|
The 32MB local SDRAM is working but not shown in the startup messages of
|
||
|
|
U-Boot. If you locate U-Boot or any other program to this area it won't run.
|
||
|
|
Turning the ichache off does not solve this problem.
|
||
|
|
|
||
|
|
As I won't buy another RPX Super there might be some little work to do for you
|
||
|
|
getting this U-Boot port running on the final board.
|
||
|
|
|
||
|
|
|
||
|
|
frank.morauf@salzbrenner.com
|