hal/halarm/generic/processor.c

   1 /*
   2  * PROJECT:         ReactOS HAL
   3  * LICENSE:         BSD - See COPYING.ARM in the top level directory
   4  * FILE:            hal/halarm/generic/processor.c
   5  * PURPOSE:         HAL Processor Routines
   6  * PROGRAMMERS:     ReactOS Portable Systems Group
   7  */
   8
   9 /* INCLUDES *******************************************************************/
  10
  11 #include <hal.h>
  12 #define NDEBUG
  13 #include <debug.h>
  14
  15 /* GLOBALS ********************************************************************/
  16
  17 KAFFINITY HalpActiveProcessors;
  18 KAFFINITY HalpDefaultInterruptAffinity;
  19 BOOLEAN HalpProcessorIdentified;
  20 BOOLEAN HalpTestCleanSupported;
  21
  22 /* PRIVATE FUNCTIONS **********************************************************/
  23
  24 VOID
  25 HalpIdentifyProcessor(VOID)
  26 {
  27     ARM_ID_CODE_REGISTER IdRegister;
  28
  29     /* Don't do it again */
  30     HalpProcessorIdentified = TRUE;
  31
  32     // fixfix: Use Pcr->ProcessorId
  33
  34     /* Read the ID Code */
  35     IdRegister = KeArmIdCodeRegisterGet();
  36
  37     /* Architecture "6" CPUs support test-and-clean (926EJ-S and 1026EJ-S) */
  38     HalpTestCleanSupported = (IdRegister.Architecture == 6);
  39 }
  40
  41 /* FUNCTIONS ******************************************************************/
  42
  43 /*
  44  * @implemented
  45  */
  46 VOID
  47 NTAPI
  48 HalInitializeProcessor(IN ULONG ProcessorNumber,
  49                        IN PLOADER_PARAMETER_BLOCK LoaderBlock)
  50 {
  51     /* Do nothing */
  52     return;
  53 }
  54
  55 /*
  56  * @implemented
  57  */
  58 BOOLEAN
  59 NTAPI
  60 HalAllProcessorsStarted(VOID)
  61 {
  62     /* Do nothing */
  63     return TRUE;
  64 }
  65
  66 /*
  67  * @implemented
  68  */
  69 BOOLEAN
  70 NTAPI
  71 HalStartNextProcessor(IN PLOADER_PARAMETER_BLOCK LoaderBlock,
  72                       IN PKPROCESSOR_STATE ProcessorState)
  73 {
  74     /* Ready to start */
  75     return FALSE;
  76 }
  77
  78 /*
  79  * @implemented
  80  */
  81 VOID
  82 NTAPI
  83 HalProcessorIdle(VOID)
  84 {
  85     /* Enable interrupts and halt the processor */
  86     _enable();
  87     UNIMPLEMENTED;
  88     while (TRUE);
  89 }
  90
  91 /*
  92  * @implemented
  93  */
  94 VOID
  95 NTAPI
  96 HalRequestIpi(KAFFINITY TargetProcessors)
  97 {
  98     /* Not implemented on UP */
  99     UNIMPLEMENTED;
 100     while (TRUE);
 101 }
 102
 103 /*
 104  * @implemented
 105  */
 106 VOID
 107 HalSweepDcache(VOID)
 108 {
 109     /*
 110      * We get called very early on, before HalInitSystem or any of the Hal*
 111      * processor routines, so we need to figure out what CPU we're on.
 112      */
 113     if (!HalpProcessorIdentified) HalpIdentifyProcessor();
 114
 115     /*
 116      * Check if we can do it the ARMv5TE-J way
 117      */
 118     if (HalpTestCleanSupported)
 119     {
 120         /* Test, clean, flush D-Cache */
 121         __asm__ __volatile__ ("1: mrc p15, 0, pc, c7, c14, 3; bne 1b");
 122     }
 123     else
 124     {
 125         /* We need to do it it by set/way. For now always call ARMv7 function */
 126         //extern VOID v7_flush_dcache_all(VOID);
 127         //v7_flush_dcache_all();
 128     }
 129 }
 130
 131 /*
 132  * @implemented
 133  */
 134 VOID
 135 HalSweepIcache(VOID)
 136 {
 137     /* All ARM cores support the same Icache flush command */
 138     KeArmFlushIcache();
 139 }
 140
 141 /* EOF */