Fix #10, modularize the ram, port, and eeprom access #282
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Convert the current "cfe_psp_ram.c" and "cfe_psp_port.c" routines into modular components, and remove from "shared" dir. The existing implementations become the corresponding "direct" module, and are enabled based on the psp module selection. Also added is a "notimpl" variant, where all the functions return CFE_PSP_ERR_NOT_IMPLEMENTED. This is used on Linux or any other system where direct access is not possible. Note this also renames the existing "eeprom_stub" module to be "eeprom_notimpl" for consistency and to avoid any confusion with the unit test stubs.
This was referenced Mar 30, 2021
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CCB:2021-03-31 APPROVED
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astrogeco
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Apr 8, 2021
Combines: nasa/cFE#1284 nasa/osal#951 nasa/PSP#289 Including: nasa/cFE#1251 - ES Info API Functional test nasa/osal#931 - Scrub include guards nasa/osal#937 - Switch to use CLOCK_REALTIME nasa/osal#938 - specify shell name in ShellOutputToFile nasa/PSP#286 - use OSAL timebase for CFE timers nasa/PSP#282 - modularize the ram, port, and eenasa/psp#om access nasa/PSP#285 - add psp module to implement timebase
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Describe the contribution
This is another attempt at resolving the long-standing issue of platform-specific code in the shared directory which is not easy to replace/override.
Convert the current "cfe_psp_ram.c" and "cfe_psp_port.c" routines into modular components, and remove from "shared" dir. The existing implementations become the corresponding "direct" module, and are enabled based on the psp module selection.
Also added is a "notimpl" variant, where all the functions return CFE_PSP_ERR_NOT_IMPLEMENTED. This is used on Linux
or any other system where direct access is not possible.
Note this also renames the existing "eeprom_stub" module to be "eeprom_notimpl" for consistency and to avoid any
confusion with the unit test stubs.
Fixes #10
Testing performed
Build and sanity check CFE on RTEMS, VxWorks/MCP750 and native Linux
run all unit tests
Confirm that the "direct" implementation of Port/RAM access is used only on VxWorks build
Confirm that the "notimpl" implementation is used on Linux.
Expected behavior changes
No longer segfaults if e.g. CFE_PSP_Port routines are invoked on Linux. Instead an error code is returned.
System(s) tested on
Ubuntu 20.04 (native)
MCP750 (vxworks)
RTEMS 4.11.3 + QEMU
Contributor Info - All information REQUIRED for consideration of pull request
Joseph Hickey, Vantage Systems, Inc.