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207 Commits

Author SHA1 Message Date
Daniel Lublin
5fe7ba7f9d
fw: optimize for speed (-O2) instead of size (-Os) 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:05 +01:00
Daniel Lublin
957df5e6b4
fw: enable addr & data scrambling; fill RAM with random data 
Use a rnd_word() func

Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:03 +01:00
Daniel Lublin
4afdc1cd1f
fw: Steady white led while waiting cmd; led off while loading app 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:03 +01:00
Daniel Lublin
7eb4d0304b
fw: load app at the start of RAM 
Since app is always loaded at the start of RAM, the TK1_APP_ADDR define
is no longer needed.

Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:03 +01:00
Daniel Lublin
425fdb4b90
fw: adjust for 2 KB of FW_RAM 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:02 +01:00
Daniel Lublin
c1fffcb70b
Keep uninitialized var in main, not globally, preventing any BSS 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:02 +01:00
Daniel Lublin
3ddd6e83a3
Refuse to produce a .bin if .elf has non-empty data or bss section 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:02 +01:00
Michael Cardell Widerkrantz
d77654bb8e
fw: No .data or .bss segment 
We don't use any .data or .bss segment at all to keep all the firmware
variables in the stack in protected fw_ram.

Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:02 +01:00
Michael Cardell Widerkrantz
56e34b3add
fw/testfw: Use fw_ram for firmware stack 
This means firmware's stack shouldn't be accessible to programs
running in app_mode.

It also means we don't need to take special care of secure_ctx which
can now be an ordinary stack variable.

Nonetheless we zero out secure_ctx after final use and inline some
assembler to zero out the entire fw_ram after use, just before
switching to app_mode.

Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:02 +01:00
Michael Cardell Widerkrantz
d2240b3e0f
fw: Use a bit string for allowed_commands 
For every state, define a constant bitstring with allowed commands and
check incoming command agains that.

Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:02 +01:00
Michael Cardell Widerkrantz
8edfdf9c36
fw: Remove state init_loading, introduce state fail 
- We always assert on allowed commands in a state.
- We don't allow FW_CMD_LOAD_APP to be used twice.
- Enter fail state on read buffer overrun, header endpoint not for us,
  header parse error, and unknown firmware command.

Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:02 +01:00
Michael Cardell Widerkrantz
65f100a3c0
fw: Use byte readable UDS 
UDS is now byte readable (but not writable).

Use UDS and USS directly in a blake2s_update() instead of
concatenating them into fw_ram. UDS will still live for a short while
in fw_ram in the blake2s context buffer but will soon be overwritten.

Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:01 +01:00
Michael Cardell Widerkrantz
b34fdbcd37
testfw: Use wordcpy_s() and memcpy_s() 
Use new wordcpy_s() and memcpy_s() functions from lib.c.

Add a local memcpy() which compiling with -Os seems to demand. Why?

Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:01 +01:00
Michael Cardell Widerkrantz
cc032d9883
fw: Hide HTIF functions better when using NOCONSOLE 
We define macros for them that expand to nothing or to a constant to
avoid any extra function calls to dummy functions when running on real
hardware with no console.

Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:01 +01:00
Michael Cardell Widerkrantz
3a7ec9b9a0
fw: Run forever_redflash() when aborting from asserts 
Should be more vissible than an eternal loop.

Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:01 +01:00
Michael Cardell Widerkrantz
bbbe1e2f31
fw: Move LED defines and function to own files 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:01 +01:00
Michael Cardell Widerkrantz
ccc3b16569
fw: Safer memory functions + asserts 
Introduce memcpy_s() and wordcpy_s() that takes the destination buffer
size as an argument. Use assert() which aborts our program to an
eternal loop if we hit problems.

Sprinkle asserts elsewhere as well.

Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:01 +01:00
Michael Cardell Widerkrantz
f386cec1ed
fw: Add destination buffer size to read() 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:00 +01:00
Michael Cardell Widerkrantz
b292c72534
fw: Remove unnecessary memcpy() from putinthex() 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-14 10:25:00 +01:00
Joachim Strömbergson
b9c415f5d6
bank1 access should also be disabled by default. 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-13 12:43:07 +01:00
Joachim Strömbergson
000b7644b5
Update fw ram last address to match new mem size 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-08 13:31:45 +01:00
Daniel Lublin
5f4f5c6584
Correct for new fw-ram size 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-08 12:34:34 +01:00
Daniel Lublin
ebe59647bb
Adjust header file to new fw_ram size 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-08 11:26:25 +01:00
Joachim Strömbergson
a63ba8eb13
Double the size of the fw_ram to 2 kByte 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-08 11:20:38 +01:00
Daniel Lublin
8fd0fca967
Grow largest frame length to 512 bytes 2023-03-07 13:52:02 +01:00
Joachim Strömbergson
2e2ca04ab7
Bump FPGA design version to 5 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-07 12:30:10 +01:00
Joachim Strömbergson
d075cc72c3
Manually merged changes for scrambling 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-07 10:42:59 +01:00
Joachim Strömbergson
3eb5b7879c Add API address to read out number of bytes in Rx FIFO 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-07 08:22:27 +01:00
Joachim Strömbergson
4db4e39205
Clarify the purpose and functionality of the tk1 core 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-07 08:20:18 +01:00
Joachim Strömbergson
74fd7e3001
Fix spelling nits 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-07 08:16:42 +01:00
Joachim Strömbergson
6f327d2ff9
Block changing of monitor addresses when enabled 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-06 15:41:55 +01:00
Joachim Strömbergson
66ebe5089a
Add fw_ram as always active exe monitor area 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-06 15:41:55 +01:00
Michael Cardell Widerkrantz
0caf260553
Add CPU_MON offsets 
Introduces offsets for setting addresses to check for execution and
offset for controlling the execution monitor.

- TK1_MMIO_TK1_CPU_MON_CTRL
- TK1_MMIO_TK1_CPU_MON_FIRST
- TK1_MMIO_TK1_CPU_MON_LAST
 2023-03-06 15:41:55 +01:00
Joachim Strömbergson
5c05ae657e
exe monitor can only be enabled, not disabled 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-06 15:41:55 +01:00
Joachim Strömbergson
7612d00ccf
Feed CPU illegal instruction to trigger trap 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-06 15:41:55 +01:00
Joachim Strömbergson
8ba97e16f3
Move force_jump function to top level mem system 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-06 15:41:54 +01:00
Joachim Strömbergson
86ea45e10a
Add CPU execution monitor 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-06 15:41:53 +01:00
Joachim Strömbergson
e514f778b2 Remove stray variable for blake2s address update 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-06 11:32:38 +01:00
Joachim Strömbergson
adcccc44de Change reset value for the trap led to black 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-06 11:32:38 +01:00
Joachim Strömbergson
d335dd708a Add HW to detect trap in cpu and signal using the LEDs 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-03-06 11:32:38 +01:00
Daniel Lublin
c9593f11c8 Config verilator lint to ignore known 3rd-party warnings; let warnings be fatal 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-03-01 13:37:31 +01:00
Joachim Strömbergson
caeee54e19
Change LED reset value to black 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-02-27 13:21:51 +01:00
Joachim Strömbergson
317561ad32
Remove options that are the same as the default values 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-02-27 10:22:04 +01:00
Daniel Lublin
9a6a790715
Add github action with basic CI that builds 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-02-03 14:28:56 +01:00
Daniel Lublin
eea8923170 Update fw & testfw to new api 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-01-30 15:48:57 +01:00
Joachim Strömbergson
6137b88fe0 Add separate start, stop bits and running status bit in API 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-01-30 15:48:57 +01:00
Joachim Strömbergson
ab03ebd12c
Improve wording ans size info in header 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-01-30 13:19:01 +01:00
Joachim Strömbergson
cc464e5be2
The memory is 256 x 32 bits, not 512 x 32 bits 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-01-30 13:00:43 +01:00
Joachim Strömbergson
f020495695
Cleanup of tb for timer core 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-01-20 10:14:44 +01:00
Daniel Lublin
60efb3c25e
Correct to new path 2023-01-13 15:42:46 +01:00
Daniel Lublin
f3c4e6c818
Revise UDI 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2023-01-05 14:34:32 +01:00
Joachim Strömbergson
9ce2b8a84a
Only accept tx data when the core is ready 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2023-01-02 13:10:40 +01:00
Daniel Lublin
c1b71b7ba6
testfw: test that UDI can't be read app-mode 2022-12-20 12:06:07 +01:00
Daniel Lublin
11c8eec7b8
testfw: use define and simplify 2022-12-20 12:06:07 +01:00
Joachim Strömbergson
5c74a0727c
Lock down access to UDI in app mode 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2022-12-20 12:05:56 +01:00
Daniel Lublin
c573155ba1
Sleep for a random number of cycles before reading out UDS to FW RAM 
To protect against warm boot attacks.

Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2022-12-19 15:25:29 +01:00
Daniel Lublin
9b9a125c66
Purge UDA; never implemented, now deprecated 
Fixes #58

Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2022-12-19 14:32:01 +01:00
Michael Cardell Widerkrantz
08e1438d1e
fw: Add support for blake2s MMIO 
In firmware we store the address to firmware blake2s() function at
TK1_MMIO_TK1_BLAKE2S so app can use this firmware function sort of
like a system call but without context switch.
 2022-12-15 12:59:52 +01:00
Joachim Strömbergson
a48dc7cbbb
Add reg writable from FW, readable from app for blake2s entry 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2022-12-08 16:16:15 +01:00
Michael Cardell Widerkrantz
3220d1c119
testfw: Remove test_ prefix on UART functions 2022-12-02 16:12:25 +01:00
Michael Cardell Widerkrantz
65bc96a725
fw: Prefix all HTIF console I/O functions with htif_ 2022-12-02 15:09:10 +01:00
Daniel Lublin
49d4735f17
Use TKey name 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2022-12-02 08:03:06 +01:00
Daniel Lublin
f87e12d1bb
Build with zmmul extension (require clang 15) 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2022-11-29 13:03:06 +01:00
Daniel Lublin
367fbec035
tpt: print whole output file paths when verbose 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2022-11-29 12:50:26 +01:00
Daniel Lublin
0541be76f3
tpt: make it really ask for items that are not passed in args 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2022-11-29 12:39:24 +01:00
Michael Cardell Widerkrantz
a0974a2c0b
fw: Make FW_CMD_NAME_VERSION return names as ASCII arrays 
Signed-off-by: Michael Cardell Widerkrantz <mc@tillitis.se>
 2022-11-28 16:17:19 +01:00
Daniel Lublin
a2bc95f49a
Flash red when ending in unknown stat 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2022-11-28 16:17:19 +01:00
Daniel Lublin
687ee4f8b1
Let LED be steady white when loading app 2022-11-28 16:17:19 +01:00
Michael Cardell Widerkrantz
60b2dcfbb9
fw: Don't allow an app size of 0 2022-11-28 16:17:19 +01:00
Michael Cardell Widerkrantz
c80dc53027
fw: Introduce an explicit state machine - changes protocol! 
We introduce an explicit state machine (see README).

With the new states we:

- combine setting size and USS to a single command.
- start the device app immediatiely when having receceived the last
  data chunk and returning the digest.
- Loop forever and wait for the stick to be removed if we end up in
  unknown state.

Signed-off-by: Michael Cardell Widerkrantz <mc@tillitis.se>
 2022-11-28 16:17:19 +01:00
Joachim Strömbergson
2fa1ffb8e7
Disable HW support in CPU for DIV 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2022-11-28 16:15:01 +01:00
Daniel Lublin
3435941eab
Remove version suffixes, no longer needed on ubuntu 22.10 (clang 15) 
Signed-off-by: Daniel Lublin <daniel@lublin.se>
 2022-11-23 09:47:48 +01:00
Joachim Strömbergson
a15a94fe8e
Move readme:s for boards and firmware to doc subdir 
Signed-off-by: Joachim Strömbergson <joachim@assured.se>
 2022-11-21 16:27:30 +01:00
Daniel Lublin
acb9c37ee7
Add fw cmd to get UDI 2022-11-21 15:45:27 +01:00
Daniel Lublin
a2ffb6d007
Correct reference 2022-11-15 15:19:45 +01:00
Joachim Strömbergson
1a49304224 Merge branch 'main' of github.com:tillitis/tillitis-key1 2022-11-09 15:06:07 +01:00
Joachim Strömbergson
159b20fa4e
Zero extend the address to match SB_RAM4K ports 2022-11-09 15:05:03 +01:00
Daniel Lublin
a14662c622
Change to max 100 KB app with 28 KB stack 2022-11-02 15:52:29 +01:00
Daniel Lublin
fdda69745e
Add wrapper script that runs reset.py using virtualenv 2022-11-02 15:19:31 +01:00
Joachim Strömbergson
517fafff57 Merge branch 'bigger_rx_fifo' 2022-11-02 14:22:46 +01:00
Daniel Lublin
8755a65a38
Format code 2022-10-31 10:07:23 +01:00
Joachim Strömbergson
8061491f6e
Cleanup, and use fifo_empty to indicate data available 2022-10-28 13:12:47 +02:00
Joachim Strömbergson
24d8680772
Improve detection of empty and full FIFO 2022-10-28 13:09:21 +02:00
Joachim Strömbergson
0eacbca2f9
Increase size of RX-FIFO to 512 bytes 2022-10-28 12:48:13 +02:00
Daniel Lublin
85ef93cd3c
Clarify switch_app reads and writes; add read test to testfw 2022-10-26 11:38:58 +02:00
Daniel Lublin
4b4f014d38
Rename to TK1 2022-10-26 09:20:02 +02:00
Daniel Lublin
db8f9cf881
Document SRAM==SPRAM; fix whitespace 2022-10-24 11:58:54 +02:00
Michael Cardell Widerkrantz
490571b6c0
Clear all RAM during start 
Since SRAM has some data remanence even without power it seems good
hygien to clear all RAM when starting the device so as not to leak
potential sensitive data between device apps.
 2022-10-24 11:52:52 +02:00
Daniel Lublin
1661ac20d4
tpt: correct and clarify ranges 2022-10-24 10:05:05 +02:00
Daniel Lublin
ecc2923387
Explain how we attain 18 MHz 2022-10-21 14:33:03 +02:00
Daniel Lublin
675fa1087f
Raise bps to 62500 2022-10-21 14:10:41 +02:00
Michael Cardell Widerkrantz
b8f1d4a083
Add make target secret, update quickstart 2022-10-20 17:02:56 +02:00
Daniel Lublin
65f2272a45
Add TRNG to testfw, document 2022-10-20 12:05:19 +02:00
Michael Cardell Widerkrantz
c52f7d52cd
testfw: Add timer tests 2022-10-20 11:34:01 +02:00
Joachim Strömbergson
19b75e71fe
Fix bit counter and simplify emtropy extraction 2022-10-19 13:10:26 +02:00
Joachim Strömbergson
20647fc486 Merge branch 'main' of github.com:tillitis/tillitis-key1 2022-10-19 09:39:23 +02:00
Joachim Strömbergson
c07c15a8b8
Update README to describe the new ROSC based TRNG 2022-10-19 09:37:58 +02:00
Michael Cardell Widerkrantz
cbe6d3db8d
Use the new firmware-only RAM for CDI computation 
To protect UDS we use a special firmware-only RAM for both the in
parameter to the blake2s() function and for the blake2s_ctx.
 2022-10-18 14:51:30 +02:00
Michael Cardell Widerkrantz
6d08a82c05
Pass the blake2s_ctx to blake2s() as arg 
Instead of allocating the blake2s_ctx in the blake2s() function we
pass it as a pointer as an argument to be able to better control where
the variable is in memory.
 2022-10-18 14:51:26 +02:00
Joachim Strömbergson
e0d68f3dae Merge branch 'main' of github.com:tillitis/tillitis-key1 2022-10-18 11:31:42 +02:00