FreeCalypso > hg > fc-magnetite
view src/gpf2/osl/os_sem_ir.c @ 673:62a5285e014a
Lorekeeping: allow tpudrv-leonardo.lib on Leonardo/Tango
Back in 2015 the Mother's idea was to produce a FreeCalypso development
board that would be a clone of TI Leonardo, including the original
quadband RFFE; one major additional stipulation was that this board
needed to be able to run original unmodified TCS211-20070608 firmware
with all blobs intact, with only minimal binary patches to main.lib
and tpudrv.lib. The necessary patched libs were produced at that time
in the tcs211-patches repository.
That plan was changed and we produced FCDEV3B instead, with Openmoko's
triband RFFE instead of Leonardo quadband, but when FC Magnetite started
in 2016, a TPUDRV_blob= provision was still made, allowing the possibility
of patching OM's tpudrv.lib for a restored Leonardo RFFE.
Now in 2020 we have FC Tango which is essentially a verbatim clone of
Leonardo core, including the original quadband RFFE. We have also
deblobbed our firmware so much that we have absolutely no real need
for a blob version of tpudrv.lib - but I thought it would be neat to put
the ancient TPUDRV_blob= mechanism (classic config) to its originally
intended use, just for the heck of it.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 29 May 2020 03:55:36 +0000 |
parents | 094ecae40880 |
children |
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/* * This C module is a reconstruction based on the disassembly of * os_sem.obj in frame_na7_db_ir.lib from the Leonardo package. */ /* set of included headers from COFF symtab: */ #include <stdio.h> #include <string.h> #include "nucleus.h" #include "typedefs.h" #include "os.h" #include "gdi.h" #include "os_types.h" #include "os_glob.h" extern T_OS_SEM_TABLE_ENTRY SemTable[]; extern unsigned os_time_to_tick_multiplier; int ReleaseSemaphoreCB(NU_SEMAPHORE *SemCB) { if (NU_Release_Semaphore(SemCB) == NU_SUCCESS) return(OS_OK); else return(OS_ERROR); } GLOBAL LONG os_ReleaseSemaphore(OS_HANDLE TaskHandle, OS_HANDLE SemHandle) { if (NU_Release_Semaphore(&SemTable[SemHandle].SemCB) == NU_SUCCESS) return(OS_OK); else return(OS_ERROR); } int ObtainSemaphoreCB(NU_SEMAPHORE *SemCB, ULONG Timeout, USHORT wait_check) { UNSIGNED nu_timeout; STATUS sts; int ret; ret = OS_OK; if (Timeout != OS_SUSPEND) nu_timeout = TIME_TO_SYSTEM_TICKS(Timeout); else if (wait_check == 1) nu_timeout = 1; else nu_timeout = NU_SUSPEND; for (;;) { sts = NU_Obtain_Semaphore(SemCB, nu_timeout); switch (sts) { case NU_SUCCESS: return(ret); case NU_INVALID_SEMAPHORE: return(OS_ERROR); case NU_INVALID_SUSPEND: nu_timeout = 0; continue; case NU_TIMEOUT: case NU_UNAVAILABLE: if (nu_timeout == 1 && wait_check == 1) { nu_timeout = NU_SUSPEND; ret = OS_WAITED; continue; } return(OS_TIMEOUT); default: /* * Disassembly reveals that the original code * has an endless loop here, the equivalent * of continue. My guess is that they simply * forgot the default case, and so control * falls onto the closing brace of the switch * and then onto the closing brace of the for * loop. But I prefer better error handling, * hence the present addition. - Space Falcon */ return(OS_ERROR); } } } GLOBAL LONG os_ObtainSemaphore(OS_HANDLE TaskHandle, OS_HANDLE SemHandle, ULONG Timeout) { if (SemHandle > MaxSemaphores) return(OS_ERROR); return ObtainSemaphoreCB(&SemTable[SemHandle].SemCB, Timeout, 0); }