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
  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(" Git Hash %s\n", gsGitHash);
  28         LogF(" Build %i\n", BUILD_NUM);
  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         #if PLATFORM_is_tegra2
  47         System_Init("Acess2.armv7.bin /Acess=initrd: -VTerm:Video=Tegra2Vid");
  48         #else
  49         System_Init("Acess2.armv7.bin /Acess=initrd: -VTerm:Video=PL110");
  50         #endif
  51 //      System_Init("Acess2.armv7.bin /Acess=initrd:");
  52         //TODO:
  53         LogF("End of kmain(), for(;;) Threads_Sleep();\n");
  54         for(;;)
  55                 Threads_Sleep();
  56 }
  57
  58 void Arch_LoadBootModules(void)
  59 {
  60 }
  61
  62 Uint32 ARMv7_int_HandleSyscalls(Uint32 Num, Uint32 *Args)
  63 {
  64         Uint32  ret = -1, err = 0;
  65         Uint32  addr;
  66         ENTER("iNum xArgs[0] xArgs[1] xArgs[2] xArgs[3]",
  67                 Num, Args[0], Args[1], Args[2], Args[3]
  68                 );
  69         switch(Num)
  70         {
  71         case 1:
  72 //              Log_Debug("ARMv7", "__clear_cache(%p, %p)", Args[0], Args[1]);
  73                 // Align
  74                 Args[0] &= ~0xFFF;
  75                 Args[1] += 0xFFF;       Args[1] &= ~0xFFF;
  76                 // Invalidate!
  77                 for( addr = Args[0]; addr < Args[1]; addr += 0x1000 )
  78                 {
  79                         LOG("addr = %p", addr);
  80                         __asm__ __volatile__ (
  81                                 "mcrlt p15, 0, %0, c7, c5, 1;\n\t"
  82                                 "mcrlt p15, 0, %0, c7, c6, 1;\n\t"
  83                                 :
  84                                 : "r" (addr)
  85                                 );
  86                 }
  87                 ret = 0;
  88                 break;
  89         }
  90         Args[0] = ret;  // RetLow
  91         Args[1] = 0;    // RetHi
  92         Args[2] = err;  // Errno
  93         LEAVE('x', ret);
  94         return ret;
  95 }
  96