KernelLand/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 extern void     Time_Setup(void);
  19
  20 // === PROTOTYPES ===
  21  int    kmain(void);
  22 Uint32  ARMv7_int_HandleSyscalls(Uint32 Num, Uint32 *Args);
  23
  24 // === CODE ===
  25 int kmain(void)
  26 {
  27         LogF("Acess2 ARMv7 v"EXPAND_STR(KERNEL_VERSION)"\n");
  28         LogF(" Git Hash %s\n", gsGitHash);
  29         LogF(" Build %i\n", BUILD_NUM);
  30
  31         MM_SetupPhys();
  32
  33         LogF("Heap Setup...\n");
  34         Heap_Install();
  35
  36         LogF("Threads Init...\n");
  37         Threads_Init();
  38
  39         LogF("VFS Init...\n");
  40         VFS_Init();
  41
  42         // Boot modules?
  43         // - most ARMv7 configs use a GIC
  44         Module_EnsureLoaded("armv7_GIC");
  45
  46         Time_Setup();
  47
  48         //
  49         LogF("Moving to arch-independent init\n");
  50         #if PLATFORM_is_tegra2
  51         System_Init("Acess2.armv7.bin /Acess=initrd: -VTerm:Video=Tegra2Vid");
  52         #else
  53         System_Init("Acess2.armv7.bin /Acess=initrd: -VTerm:Video=PL110");
  54         #endif
  55 //      System_Init("Acess2.armv7.bin /Acess=initrd:");
  56         //TODO:
  57         LogF("End of kmain(), for(;;) Threads_Sleep();\n");
  58         for(;;)
  59                 Threads_Sleep();
  60 }
  61
  62 void Arch_LoadBootModules(void)
  63 {
  64 }
  65
  66 Uint32 ARMv7_int_HandleSyscalls(Uint32 Num, Uint32 *Args)
  67 {
  68         Uint32  ret = -1, err = 0;
  69         Uint32  addr;
  70         ENTER("iNum xArgs[0] xArgs[1] xArgs[2] xArgs[3]",
  71                 Num, Args[0], Args[1], Args[2], Args[3]
  72                 );
  73         switch(Num)
  74         {
  75         case 1:
  76 //              Log_Debug("ARMv7", "__clear_cache(%p, %p)", Args[0], Args[1]);
  77                 // Align
  78                 Args[0] &= ~0xFFF;
  79                 Args[1] += 0xFFF;       Args[1] &= ~0xFFF;
  80                 // Invalidate!
  81                 for( addr = Args[0]; addr < Args[1]; addr += 0x1000 )
  82                 {
  83                         LOG("addr = %p", addr);
  84                         __asm__ __volatile__ (
  85                                 "mcrlt p15, 0, %0, c7, c5, 1;\n\t"
  86                                 "mcrlt p15, 0, %0, c7, c6, 1;\n\t"
  87                                 :
  88                                 : "r" (addr)
  89                                 );
  90                 }
  91                 ret = 0;
  92                 break;
  93         }
  94         Args[0] = ret;  // RetLow
  95         Args[1] = 0;    // RetHi
  96         Args[2] = err;  // Errno
  97         LEAVE('x', ret);
  98         return ret;
  99 }
 100