diff options
| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2008-08-20 17:27:43 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2008-08-20 17:27:43 +0000 |
| commit | bbbb8f08406d7c4bff0b24c6b0ed9f004c443839 (patch) | |
| tree | 99a55a37d16097efa6e434717dd3c94479fa65fc /c/src/lib/libbsp/powerpc/gen83xx/startup/bspstart.c | |
| parent | 2008-08-20 Joel Sherrill <joel.sherrill@OARcorp.com> (diff) | |
| download | rtems-bbbb8f08406d7c4bff0b24c6b0ed9f004c443839.tar.bz2 | |
2008-08-20 Sebastian Huber <sebastian.huber@embedded-brains.de>
* include/tm27.h: Uses now a decrementer exception handler. Replaces
previous file.
* startup/bspstart.c: Install a default decrementer exception handler.
Diffstat (limited to 'c/src/lib/libbsp/powerpc/gen83xx/startup/bspstart.c')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/gen83xx/startup/bspstart.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/c/src/lib/libbsp/powerpc/gen83xx/startup/bspstart.c b/c/src/lib/libbsp/powerpc/gen83xx/startup/bspstart.c index 7035fb7e9e..5548a6fbc6 100644 --- a/c/src/lib/libbsp/powerpc/gen83xx/startup/bspstart.c +++ b/c/src/lib/libbsp/powerpc/gen83xx/startup/bspstart.c @@ -27,6 +27,7 @@ #include <rtems/score/thread.h> #include <libcpu/powerpc-utility.h> +#include <libcpu/raw_exception.h> #include <bsp.h> #include <bsp/bootcard.h> @@ -52,11 +53,13 @@ unsigned int BSP_bus_frequency; /* Configuration parameters for clock driver, ... */ uint32_t bsp_clicks_per_usec; -/* - * Use the shared implementations of the following routines. - * Look in rtems/c/src/lib/libbsp/shared/bsplibc.c. - */ -extern void cpu_init( void); +/* Default decrementer exception handler */ +static int mpc83xx_decrementer_exception_handler( BSP_Exception_frame *frame, unsigned number) +{ + ppc_set_decrementer_register( UINT32_MAX); + + return 0; +} void BSP_panic( char *s) { @@ -105,6 +108,9 @@ void bsp_get_work_area( void **work_area_start, size_t *work_area_size, void **h void bsp_start( void) { + rtems_status_code sc = RTEMS_SUCCESSFUL; + int rv = 0; + ppc_cpu_id_t myCpu; ppc_cpu_revision_t myCpuRevision; @@ -155,9 +161,16 @@ void bsp_start( void) interrupt_stack_size ); + /* Install default handler for the decrementer exception */ + rv = ppc_exc_set_handler( ASM_DEC_VECTOR, mpc83xx_decrementer_exception_handler); + if (rv < 0) { + BSP_panic( "Cannot install decrementer exception handler!\n"); + } + /* Initalize interrupt support */ - if (bsp_interrupt_initialize() != RTEMS_SUCCESSFUL) { - BSP_panic("Cannot intitialize interrupt support\n"); + sc = bsp_interrupt_initialize(); + if (sc != RTEMS_SUCCESSFUL) { + BSP_panic( "Cannot intitialize interrupt support\n"); } #ifdef SHOW_MORE_INIT_SETTINGS |