Kernel/arch/armv7/main.c

   1 /*
   2  * Acess2
   3  *
   4  * ARM7 Entrypoint
   5  * arch/arm7/main.c
   6  */
   7 #define DEBUG   0
   8
   9 #include <acess.h>
  10 #include <modules.h>
  11
  12 // === IMPORTS ===
  13 extern void     Interrupts_Setup(void);
  14 extern void     Arch_LoadBootModules(void);
  15 extern void     Heap_Install(void);
  16 extern void     Threads_Init(void);
  17 extern void     System_Init(const char *Commandline);
  18
  19 // === PROTOTYPES ===
  20  int    kmain(void);
  21 Uint32  ARMv7_int_HandleSyscalls(Uint32 Num, Uint32 *Args);
  22
  23 // === CODE ===
  24 int kmain(void)
  25 {
  26         LogF("Acess2 ARMv7 v"EXPAND_STR(KERNEL_VERSION)"\n");
  27         LogF(" Build %i\n", BUILD_NUM);
  28 //      Interrupts_Setup();
  29
  30         MM_SetupPhys();
  31
  32         LogF("Heap Setup...\n");
  33         Heap_Install();
  34
  35         LogF("Threads Init...\n");
  36         Threads_Init();
  37
  38         LogF("VFS Init...\n");
  39         VFS_Init();
  40
  41         // Boot modules?
  42         Module_EnsureLoaded("armv7_GIC");
  43
  44         //
  45         LogF("Moving to arch-independent init\n");
  46         System_Init("Acess2.armv7.bin /Acess=initrd: -VTerm:Video=PL110");
  47 //      System_Init("/Acess=initrd:");
  48         //TODO:
  49         LogF("End of kmain(), for(;;) Threads_Sleep();\n");
  50         for(;;)
  51                 Threads_Sleep();
  52 }
  53
  54 void Arch_LoadBootModules(void)
  55 {
  56 }
  57
  58 Uint32 ARMv7_int_HandleSyscalls(Uint32 Num, Uint32 *Args)
  59 {
  60         Uint32  ret = -1, err = 0;
  61         Uint32  addr;
  62         ENTER("iNum xArgs[0] xArgs[1] xArgs[2] xArgs[3]",
  63                 Num, Args[0], Args[1], Args[2], Args[3]
  64                 );
  65         switch(Num)
  66         {
  67         case 1:
  68 //              Log_Debug("ARMv7", "__clear_cache(%p, %p)", Args[0], Args[1]);
  69                 // Align
  70                 Args[0] &= ~0xFFF;
  71                 Args[1] += 0xFFF;       Args[1] &= ~0xFFF;
  72                 // Invalidate!
  73                 for( addr = Args[0]; addr < Args[1]; addr += 0x1000 )
  74                 {
  75                         LOG("addr = %p", addr);
  76                         __asm__ __volatile__ (
  77                                 "mcrlt p15, 0, %0, c7, c5, 1;\n\t"
  78                                 "mcrlt p15, 0, %0, c7, c6, 1;\n\t"
  79                                 :
  80                                 : "r" (addr)
  81                                 );
  82                 }
  83                 ret = 0;
  84                 break;
  85         }
  86         Args[0] = ret;  // RetLow
  87         Args[1] = 0;    // RetHi
  88         Args[2] = err;  // Errno
  89         LEAVE('x', ret);
  90         return ret;
  91 }
  92