mirror of
https://github.com/AsahiLinux/u-boot
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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:
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--------------------------
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1. Put the s2 switch into the following position:
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Off On
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------
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|x |
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| x|
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|x |
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| X|
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------
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Put the s3 switch into the following position:
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Off On
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------
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| x |
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| x |
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| x|
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| x|
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------
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Put the s4 switch into the following position:
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Off On
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------
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|x |
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|x |
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|x |
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|x |
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|x |
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| x|
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|x |
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------
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2. Connect to the serial console and to the BDI. Power on. On the
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serial line, you should see:
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PURPLE@1.2>
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3. Type '8'. No echo will be displayed. In response, you should get:
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7A(pass)
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4. From BDI, enter command:
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mmw 0xb800d860 0x0042c7ff
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5. Then, from BDI:
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erase 0xB0000000
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erase 0xB0008000
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erase 0xB000C000
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erase 0xB0010000
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erase 0xB0020000
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prog 0xB0000000 <u-boot.bin> bin
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6. Power off. Restore the original S2 switch position:
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Off On
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| x|
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|x |
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| X|
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------
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Power on. U-Boot should come up.
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Implementation Notes:
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---------------------
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Due to the RAM/flash bus arbitration problem the suggested workaround
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had to be implemented. It works okay. On the downside is that you
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can't really check whether 'erase' is complete by polling flash as it
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is usually done. Instead, the flash driver simply waits for a given
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time and assumes that erase then has passed. This behaviour is
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identical to what the VxWorks driver does; also, the same timeout (6
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seconds) was chosen. Note that this timeout applies for each erase
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operation, i. e. per erased sector.
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