diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/shared/startup/bspstart.c')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/shared/startup/bspstart.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/c/src/lib/libbsp/powerpc/shared/startup/bspstart.c b/c/src/lib/libbsp/powerpc/shared/startup/bspstart.c index 04c6f48b8d..0c0ac29382 100644 --- a/c/src/lib/libbsp/powerpc/shared/startup/bspstart.c +++ b/c/src/lib/libbsp/powerpc/shared/startup/bspstart.c @@ -200,6 +200,10 @@ void bsp_start( void ) * so that It can be printed without accessing R1. */ stack = ((unsigned char*) &__rtems_end) + INIT_STACK_SIZE - CPU_MINIMUM_STACK_FRAME_SIZE; + + /* tag the bottom (T. Straumann 6/36/2001 <strauman@slac.stanford.edu>) */ + *((unsigned32 *)stack) = 0; + /* * Initialize the interrupt related settings * SPRG0 = interrupt nesting level count @@ -209,6 +213,10 @@ void bsp_start( void ) * some settings below... */ intrStack = ((unsigned char*) &__rtems_end) + INIT_STACK_SIZE + INTR_STACK_SIZE - CPU_MINIMUM_STACK_FRAME_SIZE; + + /* tag the bottom (T. Straumann 6/36/2001 <strauman@slac.stanford.edu>) */ + *((unsigned32 *)intrStack) = 0; + asm volatile ("mtspr 273, %0" : "=r" (intrStack) : "0" (intrStack)); asm volatile ("mtspr 272, %0" : "=r" (intrNestingLevel) : "0" (intrNestingLevel)); /* @@ -228,7 +236,8 @@ void bsp_start( void ) * PCI devices memory area. Needed to access OPENPIC features * provided by the RAVEN */ - setdbat(2, 0xc0000000, 0xc0000000, 0x08000000, IO_PAGE); + /* T. Straumann: give more PCI address space */ + setdbat(2, 0xc0000000, 0xc0000000, 0x10000000, IO_PAGE); /* * Must have acces to open pic PCI ACK registers * provided by the RAVEN |