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 #include "include/options.h"
  12
  13 // === IMPORTS ===
  14 extern void     Interrupts_Setup(void);
  15 extern void     Arch_LoadBootModules(void);
  16 extern void     Heap_Install(void);
  17 extern void     Threads_Init(void);
  18 extern void     System_Init(const char *Commandline);
  19 extern void     Time_Setup(void);
  20 extern void     Debug_int_SerialIRQHandler(int IRQ, void *unused);
  21
  22 // === PROTOTYPES ===
  23  int    kmain(void);
  24 Uint32  ARMv7_int_HandleSyscalls(Uint32 Num, Uint32 *Args);
  25
  26 // === CODE ===
  27 int kmain(void)
  28 {
  29         LogF("Acess2 ARMv7 v"EXPAND_STR(KERNEL_VERSION)"\n");
  30         LogF(" Git Hash %s\n", gsGitHash);
  31         LogF(" Build %i\n", BUILD_NUM);
  32
  33         MM_SetupPhys();
  34
  35         LogF("Heap Setup...\n");
  36         Heap_Install();
  37
  38         LogF("Threads Init...\n");
  39         Threads_Init();
  40
  41         LogF("VFS Init...\n");
  42         VFS_Init();
  43
  44         // Boot modules?
  45         // - most ARMv7 configs use a GIC
  46         Module_EnsureLoaded("armv7_GIC");
  47         IRQ_AddHandler(UART0_IRQ, Debug_int_SerialIRQHandler, NULL);
  48
  49         Time_Setup();
  50
  51         //
  52         LogF("Moving to arch-independent init\n");
  53         #if PLATFORM_is_tegra2
  54         System_Init("Acess2.armv7.bin /Acess=initrd: -VTerm:Video=Tegra2Vid");
  55         #else
  56         System_Init("Acess2.armv7.bin /Acess=initrd: -VTerm:Video=PL110");
  57         #endif
  58 //      System_Init("Acess2.armv7.bin /Acess=initrd:");
  59         //TODO:
  60         LogF("End of kmain(), for(;;) Threads_Sleep();\n");
  61         for(;;)
  62                 Threads_Sleep();
  63 }
  64
  65 void Arch_LoadBootModules(void)
  66 {
  67 }
  68
  69 Uint32 ARMv7_int_HandleSyscalls(Uint32 Num, Uint32 *Args)
  70 {
  71         Uint32  ret = -1, err = 0;
  72         Uint32  addr;
  73         ENTER("iNum xArgs[0] xArgs[1] xArgs[2] xArgs[3]",
  74                 Num, Args[0], Args[1], Args[2], Args[3]
  75                 );
  76         switch(Num)
  77         {
  78         case 1:
  79 //              Log_Debug("ARMv7", "__clear_cache(%p, %p)", Args[0], Args[1]);
  80                 // Align
  81                 Args[0] &= ~0xFFF;
  82                 Args[1] += 0xFFF;       Args[1] &= ~0xFFF;
  83                 // Invalidate!
  84                 for( addr = Args[0]; addr < Args[1]; addr += 0x1000 )
  85                 {
  86                         LOG("addr = %p", addr);
  87                         __asm__ __volatile__ (
  88                                 "mcrlt p15, 0, %0, c7, c5, 1;\n\t"
  89                                 "mcrlt p15, 0, %0, c7, c6, 1;\n\t"
  90                                 :
  91                                 : "r" (addr)
  92                                 );
  93                 }
  94                 ret = 0;
  95                 break;
  96         }
  97         Args[0] = ret;  // RetLow
  98         Args[1] = 0;    // RetHi
  99         Args[2] = err;  // Errno
 100         LEAVE('x', ret);
 101         return ret;
 102 }
 103