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Robin Müller 2024-09-12 18:59:43 +02:00
parent 64423aa3b1
commit 0552f08402
Signed by: muellerr
GPG Key ID: A649FB78196E3849
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bootloader/README.md
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@ -6,14 +6,23 @@ This is the Rust version of the bootloader supplied by Vorago.
The bootloader uses the following memory map: The bootloader uses the following memory map:
| <0x0> | Bootloader start | <code up to 0x3FFE bytes> | | <0x0> | Bootloader start | <code up to 0x3FFE bytes> |
| -------- | ------------------ | ----------------
| <0x3FFE> | Bootloader CRC | <word> | | <0x3FFE> | Bootloader CRC | <word> |
| -------- | ------------------ | ----------------
| <0x4000> | App image A start | <code up to 0x1DFFC (~120K) bytes> | | <0x4000> | App image A start | <code up to 0x1DFFC (~120K) bytes> |
| -------- | ------------------ | ----------------
| <0x21FFC> | App image A CRC check length | <word> | | <0x21FFC> | App image A CRC check length | <word> |
| -------- | ------------------ | ----------------
| <0x21FFE> | App image A CRC check value | <word> | | <0x21FFE> | App image A CRC check value | <word> |
| -------- | ------------------ | ----------------
| <0x22000> | App image B start | <code up to 0x1DFFC (~120K) bytes> | | <0x22000> | App image B start | <code up to 0x1DFFC (~120K) bytes> |
| -------- | ------------------ | ----------------
| <0x3FFFC> | App image B CRC check length | <word> | | <0x3FFFC> | App image B CRC check length | <word> |
| -------- | ------------------ | ----------------
| <0x3FFFE> | App image B CRC check value | <word> | | <0x3FFFE> | App image B CRC check value | <word> |
| -------- | ------------------ | ----------------
| <0x40000> | End of NVM | <end> | | <0x40000> | End of NVM | <end> |
| -------- | ------------------ | ----------------
As opposed to the Vorago example code, this bootloader assumes a 40 MHz external clock As opposed to the Vorago example code, this bootloader assumes a 40 MHz external clock
but does not scale that clock up. but does not scale that clock up.