FreeCalypso > hg > fc-magnetite
view src/g23m-gprs/cci/cci_gea_start.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 | 219afcfc6250 |
children |
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/* +----------------------------------------------------------------------------- | Project : | Modul : cci_gea_start.c +----------------------------------------------------------------------------- | Copyright 2002 Texas Instruments Berlin, AG | All rights reserved. | | This file is confidential and a trade secret of Texas | Instruments Berlin, AG | The receipt of or possession of this file does not convey | any rights to reproduce or disclose its contents or to | manufacture, use, or sell anything it may describe, in | whole, or in part, without the specific written consent of | Texas Instruments Berlin, AG. +----------------------------------------------------------------------------- | Purpose : This module implements local functions for service FBS of | entity CCI. +----------------------------------------------------------------------------- */ #define CCI_GEA_START_C #ifndef CCI_THREAD #define ENTITY_LLC #else #define ENTITY_CCI #endif /*==== INCLUDES =============================================================*/ #include "typedefs.h" /* to get Condat data types */ #include "vsi.h" /* to get a lot of macros */ #include "macdef.h" #include "gprs.h" #include "gsm.h" /* to get a lot of macros */ #include "cnf_llc.h" /* to get cnf-definitions */ #include "mon_llc.h" /* to get mon-definitions */ #include "prim.h" /* to get the definitions of used SAP and directions */ #include "cci.h" /* to get the global entity definitions */ #ifndef CCI_THREAD #include "llc.h" /* to get the global entity definitions */ #endif #ifndef _SIMULATION_ #include "config/chipset.cfg" #endif /* ifdef SIMULATION */ /*==== CONST ================================================================*/ /*==== LOCAL VARS ===========================================================*/ /*==== PRIVATE FUNCTIONS ====================================================*/ /*==== PUBLIC FUNCTIONS =====================================================*/ /* +------------------------------------------------------------------------------ | Function : gea_start +------------------------------------------------------------------------------ | Description : The function .... | | Parameters : void | +------------------------------------------------------------------------------ */ /* GEA work-around only affects Calypso+ chipset. */ #ifndef CCI_FLASH_ROM /* Assembly routine gea_start() should be executed from the Internal RAM */ void gea_start(void){ #if (CHIPSET == 12) || (CHIPSET == 14) /* Enable Timer1 clock */ *(volatile USHORT *) 0xfffe3800 |= 0x0020; /* Save into the stack ARM registers r0 to r4 */ asm(" push {r0-r4}"); /* Load in r0 READ_TIMER1 address */ asm(" ldr r0, READ_TIMER1_ADDR"); /* Set bit START in GEA_CNTL register */ asm(" ldr r1, GEA_CNTL_ADDR"); asm(" mov r4,#4"); asm(" ldrh r2, [r1]"); asm(" orr r2,r4"); asm(" strh r2,[r1]"); /* Load Timer1 in r3 in order to prevent DMA access on strobe0 during the GEA clock switch. This reading of Timer1 generates around 13 cycles of MCU clock activity on strobe1 and so guaranties that strobe0 will be quiet during that time. */ asm(" ldrh r3,[r0]"); /* Restore ARM registers r0 to r4 from the stack */ asm(" pop {r0-r4}"); /* Branch to end of the function, to avoid that the 2 following constant definitions are mistaken with code instructions. */ asm(" br $gea_end_func"); /* Must be defined inside the function body, else depending on the compiler version, they are not inserted in the right section */ asm("READ_TIMER1_ADDR .long 0xFFFE3804"); asm("GEA_CNTL_ADDR .long 0xffffc000"); asm("$gea_end_func:"); } #else } #endif /*(CHIPSET == 12)*/ #endif /* CCI_FLASH_ROM */