arch/ppc/boot/simple/clear.S

   1 /*
   2  * Code to call _setup_L2CR to flus, invalidate and disable the L2,
   3  * and if present, do the same to the L3.
   4  */
   5
   6 #define CLEAR_CACHES                                            \
   7         bl      _setup_L2CR;                                    \
   8                                                                 \
   9         /* If 745x, turn off L3CR as well */                    \
  10         mfspr   r8,SPRN_PVR;                                    \
  11         srwi    r8,r8,16;                                       \
  12                                                                 \
  13         cmpli   cr0,r8,0x8000;                  /* 7450 */      \
  14         cmpli   cr1,r8,0x8001;                  /* 7455 */      \
  15         cmpli   cr2,r8,0x8002;                  /* 7457 */      \
  16         /* Now test if any are true. */                         \
  17         cror    4*cr0+eq,4*cr0+eq,4*cr1+eq;                     \
  18         cror    4*cr0+eq,4*cr0+eq,4*cr2+eq;                     \
  19         beql    _setup_L3CR