> On Fri, 08 Apr 2011 18:56:13 +0200, RafaÅ MiÅecki <zajec5@xxxxxxxxx> wrote: > > > 2011/4/6 Arend van Spriel <arend@xxxxxxxxxxxx>: > >> 3. Device identification > >> > >> The cores are identified by manufacturer, core id and revision in your > >> patch. I would not use the revision because 4 out of 5 times a revision > >> change does indicate a hardware change but no change in programming > >> interface. The enumeration data does contain a more selective field > >> indicating the core class (4 bits following the core identifier). I > >> suggest > >> to replace the revision field by this class field. > > > > Could you say something more about *class*, please? For my BCM43224 it > > seems to be 0x0. WIll check BCM4313 in a moment. > > > > In principal the manufacturer id is unique (defined/assigned by JEDEC > www.jedec.org) and the chip id and chip class are defined by the > manufacturer. So I can only indicate what classes Broadcom uses in > combination with the manufacturer id BRCM, ARM and MIPS. > > /* Component Classes */ > #define CC_SIM 0 > #define CC_EROM 1 > #define CC_CORESIGHT 9 > #define CC_VERIF 0xb > #define CC_OPTIMO 0xd > #define CC_GEN 0xe > #define CC_PRIMECELL 0xf > > Looking at this it seems strange that you see a class value of 0x0. It may > be rarely used or for non-production chips only (for simulation, chip > bringup) which may require additional (debug) functions. So question is > whether you will need it, but it is specified by ARM and it is up to > manufacturers to use it. So I it is better to be safe than sorry and have > this in the device id. > > Gr. AvS When parsing bcm4716 EROM I have cia & CIA_CCL_MASK equal to 0 for all 9 cores You mentioned ARM DMP (Device Management Plugin) several times in earlier messages some time ago but I can't find anything relevant about that at ARM infocenter. Any chance you can point more precise location for any DMP reference? Have nice day, George _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
