mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 09:48:16 +00:00
8bde7f776c
- remove trailing white space, trailing empty lines, C++ comments, etc.
- split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c)
* Patches by Kenneth Johansson, 25 Jun 2003:
- major rework of command structure
(work done mostly by Michal Cendrowski and Joakim Kristiansen)
84 lines
1.5 KiB
Text
84 lines
1.5 KiB
Text
Installation Instructions:
|
|
--------------------------
|
|
|
|
1. Put the s2 switch into the following position:
|
|
|
|
Off On
|
|
------
|
|
|x |
|
|
| x|
|
|
|x |
|
|
| X|
|
|
------
|
|
|
|
Put the s3 switch into the following position:
|
|
|
|
Off On
|
|
------
|
|
| x |
|
|
| x |
|
|
| x|
|
|
| x|
|
|
------
|
|
|
|
Put the s4 switch into the following position:
|
|
|
|
Off On
|
|
------
|
|
|x |
|
|
|x |
|
|
|x |
|
|
|x |
|
|
|x |
|
|
| x|
|
|
| x|
|
|
|x |
|
|
------
|
|
|
|
2. Connect to the serial console and to the BDI. Power on. On the
|
|
serial line, you should see:
|
|
|
|
PURPLE@1.2>
|
|
|
|
3. Type '8'. No echo will be displayed. In response, you should get:
|
|
|
|
7A(pass)
|
|
|
|
4. From BDI, enter command:
|
|
|
|
mmw 0xb800d860 0x0042c7ff
|
|
|
|
5. Then, from BDI:
|
|
|
|
erase 0xB0000000
|
|
erase 0xB0008000
|
|
erase 0xB000C000
|
|
erase 0xB0010000
|
|
erase 0xB0020000
|
|
|
|
prog 0xB0000000 <u-boot.bin> bin
|
|
|
|
6. Power off. Restore the original S2 switch position:
|
|
|
|
Off On
|
|
------
|
|
| x|
|
|
| x|
|
|
|x |
|
|
| X|
|
|
------
|
|
|
|
Power on. U-Boot should come up.
|
|
|
|
|
|
Implementation Notes:
|
|
---------------------
|
|
|
|
Due to the RAM/flash bus arbitration problem the suggested workaround
|
|
had to be implemented. It works okay. On the downside is that you
|
|
can't really check whether 'erase' is complete by polling flash as it
|
|
is usually done. Instead, the flash driver simply waits for a given
|
|
time and assumes that erase then has passed. This behaviour is
|
|
identical to what the VxWorks driver does; also, the same timeout (6
|
|
seconds) was chosen. Note that this timeout applies for each erase
|
|
operation, i. e. per erased sector.
|