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Boot ROM
J. Neuschäfer edited this page Jan 19, 2024
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3 revisions
An on-chip boot ROM exists to supply the CPU with an initial vector table at 0xffff0000.
| address | size | description |
|---|---|---|
| 0x7fff0000 | 0x1000 (4k) | Boot ROM mirror 1 |
| 0xffff0000 | 0x1000 (4k) | Boot ROM mirror 2, initial vector table |
| SHA256 | seen on chips |
|---|---|
7c083b68c817435309f535ec4c7f597a4683e8ffbdb128a4471854077a88a7ed |
WPCM450-R A3 |
TODO: collect more bootrom versions
TODO: trace the bootloader's actions
Overview:
Basics:
Peripherals:
- Memory controller
- UART, SPI/SSPI, I2C, SD
- GPIOs and pinmux
- Ethernet
- USB, LPC, PECI, XBUS
- PWM and Tachometer, ADC
- Graphics
Board specifics: