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

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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.
This commit is contained in:
Jonas Thörnblad 2025-02-19 16:45:05 +01:00 • committed by Michael Cardell Widerkrantz
parent 3126a9c51e
commit 8f2f312531
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GPG key ID: D3DB3DDF57E704E5
13 changed files with 310 additions and 77 deletions
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6
hw/application_fpga/fw/tk1_mem.h
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@ -54,6 +54,8 @@
*/
#define TK1_ROM_BASE 0x00000000
#define TK1_ROM_SIZE 0x2000
#define TK1_RAM_BASE 0x40000000
#define TK1_RAM_SIZE 0x20000
@ -63,8 +65,8 @@
#define TK1_APP_MAX_SIZE 0x20000
#define TK1_MMIO_FW_RAM_BASE 0xd0000000
// FW_RAM is 2048 bytes
#define TK1_MMIO_FW_RAM_SIZE 0x800
// FW_RAM is 4096 bytes
#define TK1_MMIO_FW_RAM_SIZE 0x1000
#define TK1_MMIO_TRNG_BASE 0xc0000000
#define TK1_MMIO_TRNG_STATUS 0xc0000024