| 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. |
