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mirror of https://github.com/tillitis/tillitis-key1.git synced 2025-03-13 02:26:49 -04:00

Jonas Thörnblad 8f2f312531

fpga/fw: Resize ROM and FW_RAM, add RESETINFO partition

In order to be able to leave data for firmware signalling the
intention with a reset or to leave data for the next app in a chain of
apps, we introduce a part of FW_RAM that can be used to store this
data. In order to do this, we:

- Change size of ROM from 6 KB to 8 KB.
- Change size of FW_RAM, from 2 KB to 4 KB.
- Add RESETINFO memory partition inside FW_RAM.
- Add generation of map file.
- Change CFLAGS from using -O2 to using -Os.
- Update address ranges for valid access to ROM and FW_RAM.
- Move stack to be located before data+bss and the RESETINFO data
  above them. This also means we introduce hardware stack overflow
  protection through the Security Monitor.
- Revise firmware README to the new use of FW_RAM.

2025-02-21 11:15:34 +01:00

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