kopia lustrzana https://github.com/F5OEO/rpidatv
Adding mandatory dt-blob for setting PLLD @1GHZ
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320
src/utils.h
320
src/utils.h
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//*************************************************************************************************************
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// ****************** STOLEN FROM WIRING PI ******************************************************************
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//*************************************************************************************************************
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#ifndef TRUE
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#define TRUE (1==1)
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#define FALSE (1==2)
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#endif
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static int piModel2 = FALSE ;
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const char *piModelNames [7] =
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{
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"Unknown",
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"Model A",
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"Model B",
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"Model B+",
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"Compute Module",
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"Model A+",
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"Model 2", // Quad Core
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} ;
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const char *piRevisionNames [5] =
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{
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"Unknown",
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"1",
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"1.1",
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"1.2",
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"2",
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} ;
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const char *piMakerNames [5] =
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{
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"Unknown",
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"Egoman",
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"Sony",
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"Qusda",
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"MBest",
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} ;
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// Pi model types and version numbers
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// Intended for the GPIO program Use at your own risk.
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#define PI_MODEL_UNKNOWN 0
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#define PI_MODEL_A 1
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#define PI_MODEL_B 2
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#define PI_MODEL_BP 3
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#define PI_MODEL_CM 4
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#define PI_MODEL_AP 5
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#define PI_MODEL_2 6
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#define PI_VERSION_UNKNOWN 0
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#define PI_VERSION_1 1
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#define PI_VERSION_1_1 2
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#define PI_VERSION_1_2 3
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#define PI_VERSION_2 4
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#define PI_MAKER_UNKNOWN 0
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#define PI_MAKER_EGOMAN 1
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#define PI_MAKER_SONY 2
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#define PI_MAKER_QISDA 3
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#define PI_MAKER_MBEST 4
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/*
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* piBoardRev:
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* Return a number representing the hardware revision of the board.
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*
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* Revision 1 really means the early Model B's.
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* Revision 2 is everything else - it covers the B, B+ and CM.
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* ... and the Pi 2 - which is a B+ ++ ...
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*
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* Seems there are some boards with 0000 in them (mistake in manufacture)
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* So the distinction between boards that I can see is:
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* 0000 - Error
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* 0001 - Not used
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* 0002 - Model B, Rev 1, 256MB, Egoman
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* 0003 - Model B, Rev 1.1, 256MB, Egoman, Fuses/D14 removed.
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* 0004 - Model B, Rev 2, 256MB, Sony
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* 0005 - Model B, Rev 2, 256MB, Qisda
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* 0006 - Model B, Rev 2, 256MB, Egoman
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* 0007 - Model A, Rev 2, 256MB, Egoman
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* 0008 - Model A, Rev 2, 256MB, Sony
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* 0009 - Model A, Rev 2, 256MB, Qisda
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* 000d - Model B, Rev 2, 512MB, Egoman
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* 000e - Model B, Rev 2, 512MB, Sony
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* 000f - Model B, Rev 2, 512MB, Qisda
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* 0010 - Model B+, Rev 1.2, 512MB, Sony
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* 0011 - Pi CM, Rev 1.2, 512MB, Sony
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* 0012 - Model A+ Rev 1.2, 256MB, Sony
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*
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* For the Pi 2:
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* 0010 - Model 2, Rev 1.1, Quad Core, 1GB, Sony
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*
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* A small thorn is the olde style overvolting - that will add in
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* 1000000
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*
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* The Pi compute module has an revision of 0011 - since we only check the
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* last digit, then it's 1, therefore it'll default to not 2 or 3 for a
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* Rev 1, so will appear as a Rev 2. This is fine for the most part, but
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* we'll properly detect the Compute Module later and adjust accordingly.
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*
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*********************************************************************************
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*/
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static void piBoardRevOops (const char *why)
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{
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fprintf (stderr, "piBoardRev: Unable to determine board revision from /proc/cpuinfo\n") ;
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fprintf (stderr, " -> %s\n", why) ;
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fprintf (stderr, " -> You may want to check:\n") ;
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fprintf (stderr, " -> http://www.raspberrypi.org/phpBB3/viewtopic.php?p=184410#p184410\n") ;
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exit (EXIT_FAILURE) ;
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}
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int piBoardRev (void)
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{
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FILE *cpuFd ;
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char line [120] ;
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char *c ;
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static int boardRev = -1 ;
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if (boardRev != -1) // No point checking twice
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return boardRev ;
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if ((cpuFd = fopen ("/proc/cpuinfo", "r")) == NULL)
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piBoardRevOops ("Unable to open /proc/cpuinfo") ;
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// Start by looking for the Architecture, then we can look for a B2 revision....
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while (fgets (line, 120, cpuFd) != NULL)
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if (strncmp (line, "Hardware", 8) == 0)
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break ;
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if (strncmp (line, "Hardware", 8) != 0)
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piBoardRevOops ("No \"Hardware\" line") ;
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// See if it's BCM2708 or BCM2709
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if (strstr (line, "BCM2709") != NULL)
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piModel2 = TRUE ;
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else if (strstr (line, "BCM2708") == NULL)
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{
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fprintf (stderr, "Unable to determine hardware version. I see: %s,\n", line) ;
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fprintf (stderr, " - expecting BCM2708 or BCM2709. Please report this to projects@drogon.net\n") ;
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exit (EXIT_FAILURE) ;
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}
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// Now do the rest of it as before
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rewind (cpuFd) ;
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while (fgets (line, 120, cpuFd) != NULL)
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if (strncmp (line, "Revision", 8) == 0)
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break ;
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fclose (cpuFd) ;
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if (strncmp (line, "Revision", 8) != 0)
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piBoardRevOops ("No \"Revision\" line") ;
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// Chomp trailing CR/NL
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for (c = &line [strlen (line) - 1] ; (*c == '\n') || (*c == '\r') ; --c)
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*c = 0 ;
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//if (wiringPiDebug)
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printf ("piboardRev: Revision string: %s\n", line) ;
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// Scan to first digit
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for (c = line ; *c ; ++c)
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if (isdigit (*c))
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break ;
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if (!isdigit (*c))
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piBoardRevOops ("No numeric revision string") ;
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// Make sure its long enough
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if (strlen (c) < 4)
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piBoardRevOops ("Bogus \"Revision\" line (too small)") ;
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// If you have overvolted the Pi, then it appears that the revision
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// has 100000 added to it!
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// The actual condition for it being set is:
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// (force_turbo || current_limit_override || temp_limit>85) && over_voltage>0
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//if (wiringPiDebug)
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if (strlen (c) != 4)
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printf ("piboardRev: This Pi has/is (force_turbo || current_limit_override || temp_limit>85) && over_voltage>0\n") ;
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// Isolate last 4 characters:
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c = c + strlen (c) - 4 ;
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if ( (strcmp (c, "0002") == 0) || (strcmp (c, "0003") == 0))
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boardRev = 1 ;
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else
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boardRev = 2 ;
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return boardRev ;
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}
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/*
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* piBoardId:
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* Do more digging into the board revision string as above, but return
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* as much details as we can.
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* This is undocumented and really only intended for the GPIO command.
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* Use at your own risk!
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*
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* for Pi v2:
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* [USER:8] [NEW:1] [MEMSIZE:3] [MANUFACTURER:4] [PROCESSOR:4] [TYPE:8] [REV:4]
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* NEW 23: will be 1 for the new scheme, 0 for the old scheme
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* MEMSIZE 20: 0=256M 1=512M 2=1G
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* MANUFACTURER 16: 0=SONY 1=EGOMAN 2=EMBEST
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* PROCESSOR 12: 0=2835 1=2836
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* TYPE 04: 0=MODELA 1=MODELB 2=MODELA+ 3=MODELB+ 4=Pi2 MODEL B 5=ALPHA 6=CM
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* REV 00: 0=REV0 1=REV1 2=REV2
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*********************************************************************************
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*/
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void piBoardId (int *model, int *rev, int *mem, int *maker, int *overVolted)
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{
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FILE *cpuFd ;
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char line [120] ;
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char *c ;
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// Will deal with the properly later on - for now, lets just get it going...
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// unsigned int modelNum ;
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(void)piBoardRev () ; // Call this first to make sure all's OK. Don't care about the result.
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if ((cpuFd = fopen ("/proc/cpuinfo", "r")) == NULL)
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piBoardRevOops ("Unable to open /proc/cpuinfo") ;
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while (fgets (line, 120, cpuFd) != NULL)
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if (strncmp (line, "Revision", 8) == 0)
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break ;
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fclose (cpuFd) ;
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if (strncmp (line, "Revision", 8) != 0)
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piBoardRevOops ("No \"Revision\" line") ;
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// Chomp trailing CR/NL
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for (c = &line [strlen (line) - 1] ; (*c == '\n') || (*c == '\r') ; --c)
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*c = 0 ;
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//if (wiringPiDebug)
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printf ("piboardId: Revision string: %s\n", line) ;
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if (piModel2)
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{
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// Scan to the colon
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for (c = line ; *c ; ++c)
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if (*c == ':')
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break ;
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if (*c != ':')
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piBoardRevOops ("Bogus \"Revision\" line") ;
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// modelNum = (unsigned int)strtol (++c, NULL, 16) ; // Hex number with no leading 0x
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*model = PI_MODEL_2 ;
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*rev = PI_VERSION_1_1 ;
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*mem = 1024 ;
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*maker = PI_MAKER_SONY ;
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}
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else
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{
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// Scan to first digit
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for (c = line ; *c ; ++c)
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if (isdigit (*c))
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break ;
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// Make sure its long enough
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if (strlen (c) < 4)
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piBoardRevOops ("Bogus \"Revision\" line") ;
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// If longer than 4, we'll assume it's been overvolted
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*overVolted = strlen (c) > 4 ;
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// Extract last 4 characters:
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c = c + strlen (c) - 4 ;
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// Fill out the replys as appropriate
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/**/ if (strcmp (c, "0002") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_1 ; *mem = 256 ; *maker = PI_MAKER_EGOMAN ; }
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else if (strcmp (c, "0003") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_1_1 ; *mem = 256 ; *maker = PI_MAKER_EGOMAN ; }
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else if (strcmp (c, "0004") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_2 ; *mem = 256 ; *maker = PI_MAKER_SONY ; }
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else if (strcmp (c, "0005") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_2 ; *mem = 256 ; *maker = PI_MAKER_QISDA ; }
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else if (strcmp (c, "0006") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_2 ; *mem = 256 ; *maker = PI_MAKER_EGOMAN ; }
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else if (strcmp (c, "0007") == 0) { *model = PI_MODEL_A ; *rev = PI_VERSION_2 ; *mem = 256 ; *maker = PI_MAKER_EGOMAN ; }
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else if (strcmp (c, "0008") == 0) { *model = PI_MODEL_A ; *rev = PI_VERSION_2 ; *mem = 256 ; *maker = PI_MAKER_SONY ; ; }
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else if (strcmp (c, "0009") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_2 ; *mem = 256 ; *maker = PI_MAKER_QISDA ; }
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else if (strcmp (c, "000d") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_2 ; *mem = 512 ; *maker = PI_MAKER_EGOMAN ; }
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else if (strcmp (c, "000e") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_2 ; *mem = 512 ; *maker = PI_MAKER_SONY ; }
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else if (strcmp (c, "000f") == 0) { *model = PI_MODEL_B ; *rev = PI_VERSION_2 ; *mem = 512 ; *maker = PI_MAKER_EGOMAN ; }
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else if (strcmp (c, "0010") == 0) { *model = PI_MODEL_BP ; *rev = PI_VERSION_1_2 ; *mem = 512 ; *maker = PI_MAKER_SONY ; }
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else if (strcmp (c, "0011") == 0) { *model = PI_MODEL_CM ; *rev = PI_VERSION_1_2 ; *mem = 512 ; *maker = PI_MAKER_SONY ; }
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else if (strcmp (c, "0012") == 0) { *model = PI_MODEL_AP ; *rev = PI_VERSION_1_2 ; *mem = 256 ; *maker = PI_MAKER_SONY ; }
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else if (strcmp (c, "0013") == 0) { *model = PI_MODEL_BP ; *rev = PI_VERSION_1_2 ; *mem = 512 ; *maker = PI_MAKER_MBEST ; }
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else { *model = 0 ; *rev = 0 ; *mem = 0 ; *maker = 0 ; }
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}
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}
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