diff options
Diffstat (limited to 'cmd/sbc_harness')
| -rw-r--r-- | cmd/sbc_harness/CMakeLists.txt | 4 | ||||
| -rw-r--r-- | cmd/sbc_harness/main.c | 7 | ||||
| -rw-r--r-- | cmd/sbc_harness/static/Documentation/harness_flash_bin.txt | 24 | ||||
| -rw-r--r-- | cmd/sbc_harness/static/Documentation/harness_rom_bin.txt | 41 |
4 files changed, 75 insertions, 1 deletions
diff --git a/cmd/sbc_harness/CMakeLists.txt b/cmd/sbc_harness/CMakeLists.txt index 5f58729..9025447 100644 --- a/cmd/sbc_harness/CMakeLists.txt +++ b/cmd/sbc_harness/CMakeLists.txt @@ -1,6 +1,6 @@ # cmd/sbc_harness/CMakeLists.txt - Build script for main sbc_harness.uf2 firmware file # -# Copyright (C) 2024 Luke T. Shumaker <lukeshu@lukeshu.com> +# Copyright (C) 2024-2025 Luke T. Shumaker <lukeshu@lukeshu.com> # SPDX-License-Identifier: AGPL-3.0-or-later if (PICO_PLATFORM STREQUAL "rp2040") @@ -60,6 +60,8 @@ target_embed_sources(sbc_harness_objs sbc_harness static.h static/Documentation/YOUR_RIGHTS_AND_OBLIGATIONS/printf.mit.txt static/Documentation/YOUR_RIGHTS_AND_OBLIGATIONS/tinyusb.mit.txt static/Documentation/YOUR_RIGHTS_AND_OBLIGATIONS/newlib.txt + static/Documentation/harness_rom_bin.txt + static/Documentation/harness_flash_bin.txt ) endif() diff --git a/cmd/sbc_harness/main.c b/cmd/sbc_harness/main.c index 1c14762..18a649e 100644 --- a/cmd/sbc_harness/main.c +++ b/cmd/sbc_harness/main.c @@ -68,6 +68,12 @@ struct lib9p_srv_file root = .data_start = _binary_static_Documentation_YOUR_RIGHTS_AND_OBLIGATIONS_newlib_txt_start, .data_end = _binary_static_Documentation_YOUR_RIGHTS_AND_OBLIGATIONS_newlib_txt_end), ), + STATIC_FILE("harness_rom_bin.txt", + .data_start = _binary_static_Documentation_harness_rom_bin_txt_start, + .data_end = _binary_static_Documentation_harness_rom_bin_txt_end), + STATIC_FILE("harness_flash_bin.txt", + .data_start = _binary_static_Documentation_harness_flash_bin_txt_start, + .data_end = _binary_static_Documentation_harness_flash_bin_txt_end), ), STATIC_DIR("harness", STATIC_FILE("rom.bin", @@ -79,6 +85,7 @@ struct lib9p_srv_file root = .data_size = PICO_FLASH_SIZE_BYTES), // TODO: system.log // TODO: proc.txt + // TODO: cpuinfo.txt // TODO: ctl ), STATIC_DIR("dut", diff --git a/cmd/sbc_harness/static/Documentation/harness_flash_bin.txt b/cmd/sbc_harness/static/Documentation/harness_flash_bin.txt new file mode 100644 index 0000000..982d7e0 --- /dev/null +++ b/cmd/sbc_harness/static/Documentation/harness_flash_bin.txt @@ -0,0 +1,24 @@ +NAME + /harness/flash.bin + +DESCRIPTION + Access to the flash storage chip (where the harness firmware + is stored). + + Any number of readers may read the flash contents. + +BUGS + - The size of the chip is configured at compile-time. If the + firmware is loaded onto hardware with a larger flash chip + than it was compiled for, then the upper part of the chip + will not be accessible with this file. If the firmware is + loaded onto hardware with a smaller flash chip than it was + compiled for, then accessing the missing upper part of the + chip will crash. + + - This file is not writable; it aught to be possible to update + the harness firmware by writing to this file. + +AUTHOR + Copyright (C) 2025 Luke T. Shumaker <lukeshu@lukeshu.com> + SPDX-License-Identifier: AGPL-3.0-or-later diff --git a/cmd/sbc_harness/static/Documentation/harness_rom_bin.txt b/cmd/sbc_harness/static/Documentation/harness_rom_bin.txt new file mode 100644 index 0000000..63fd0a3 --- /dev/null +++ b/cmd/sbc_harness/static/Documentation/harness_rom_bin.txt @@ -0,0 +1,41 @@ +NAME + /harness/rom.bin + +DESCRIPTION + Read access to the RP2040 CPU's ROM. This contains code that + initializes the chip to load the main firmware from the + external flash chip, provides a failsafe USB-programmable + mode, and provides a few functions that the main firmware can + call to. + +BUGS + This ROM is programmed into the chip at the factory; revising + it means issuing a new revison of the RP2040 CPU. So while + the source code to the ROM is freely available to be used, + studied, and shared; one cannot install modified versions onto + the CPU. + +HISTORY + - RP2040 B0 : chips manufactured before September 2020 or so + - RP2040 B1 : chips manufactured after September 2020 or so + - Released to the public January 2021; chance whether you get + a B0 or a B1 chip. + - RP2040 B2 : released September 2021 + + Printed on the physical CPU is a label that indicates which + revision it is. For example: + + RP2-B2 21/24 + + indicates that it is the "B2" revision (and was manufactured + the 21st week (late May) of 2024). + +SEE ALSO + - /harness/cpuinfo.txt can report which CPU version you have. + + - The source code to each ROM revision is published at + https://github.com/raspberrypi/pico-bootrom-rp2040 + +AUTHOR + Copyright (C) 2025 Luke T. Shumaker <lukeshu@lukeshu.com> + SPDX-License-Identifier: AGPL-3.0-or-later |