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Diffstat (limited to 'bsp-howto/target-hash.rst')
| -rw-r--r-- | bsp-howto/target-hash.rst | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/bsp-howto/target-hash.rst b/bsp-howto/target-hash.rst new file mode 100644 index 0000000..af73ae3 --- /dev/null +++ b/bsp-howto/target-hash.rst @@ -0,0 +1,17 @@ +.. SPDX-License-Identifier: CC-BY-SA-4.0 + +.. Copyright (C) 2021 embedded brains GmbH & Co. KG + +Target Hash +*********** + +Each BSP must provide an implementation of the :c:func:`rtems_get_target_hash` +directive. The +`default implementation <https://git.rtems.org/rtems/tree/bsps/shared/start/gettargethash-default.c>`_ +is based on the CPU counter frequency. A BSP-specific implementation may be +provided which covers also for example the device tree, settings of the memory +controller, processor and bus frequencies, a serial number of a chip, etc. For +a BSP-specific implementation start with the default implementation and add +more values to the target hash using the functions :c:func:`_Hash_Add_data` and +:c:func:`_Hash_Add_string`. The target hash can be used to distinguish test +suite results obtained from different target systems. |