Boot sequence (Maya)
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Default boot sequence[edit | edit source]
DM814x provides several boot sequences selectable via BTMODE[4:0] bootstrap pins.
For a detailed explanation of DM814x/AM387x see chapter ROM Code Memory and Peripheral Booting of DM8148 Technical Reference Manual.
By default, Naon provides the following configuration:
- BTMODE[15]: 0
- BTMODE[14:13]: 10
- BTMODE[12]: 1
- BTMODE[11]: 0
- BTMODE[10]: 0
- BTMODE[9:8]: 01
- BTMODE[7:5]: 000
- BTMODE[4:0]: 10010.
Thus default boot sequence is:
- NAND
- NANDI2C
- SPI
- UART.
