diff options
| author | Daniel Cederman <cederman@gaisler.com> | 2014-10-01 13:53:03 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-10-02 07:29:05 +0200 |
| commit | 93b000e6457c7b033a9e2826847a712e40e33ec0 (patch) | |
| tree | 6fd279e6caec35e7f7a0426671c38bf9ae172959 /c/src/lib/libbsp/sparc/leon3/startup/bspsmp.c | |
| parent | pppd: Import change from NetBSD (diff) | |
| download | rtems-93b000e6457c7b033a9e2826847a712e40e33ec0.tar.bz2 | |
bsp/leon3: Replace the define LEON3_MP_IRQ with a weakly linked variable
The LEON3_MP_IRQ define is used to pick the IRQ to be used by the
shared memory driver and for inter-processor interrupts. On some LEON3
systems, for example the GR712RC, the default value of 14 is not suitable.
To make this value configurable from the application, it is replaced with
a weakly linked variable that can be overridden from the application.
Diffstat (limited to 'c/src/lib/libbsp/sparc/leon3/startup/bspsmp.c')
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/startup/bspsmp.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/c/src/lib/libbsp/sparc/leon3/startup/bspsmp.c b/c/src/lib/libbsp/sparc/leon3/startup/bspsmp.c index b7c347e451..567c971d2e 100644 --- a/c/src/lib/libbsp/sparc/leon3/startup/bspsmp.c +++ b/c/src/lib/libbsp/sparc/leon3/startup/bspsmp.c @@ -21,6 +21,11 @@ #include <rtems/score/smpimpl.h> #include <stdlib.h> +/* Irq used by shared memory driver and for inter-processor interrupts. + * Can be overridden by being defined in the application. + */ +unsigned char LEON3_mp_irq __attribute__((weak)) = 14; + #if !defined(__leon__) || defined(RTEMS_PARAVIRT) uint32_t _CPU_SMP_Get_current_processor( void ) { @@ -41,7 +46,7 @@ void bsp_start_on_secondary_processor() leon3_set_cache_control_register(0x80000F); /* Unmask IPI interrupts at Interrupt controller for this CPU */ - LEON3_IrqCtrl_Regs->mask[cpu_index_self] |= 1U << LEON3_MP_IRQ; + LEON3_IrqCtrl_Regs->mask[cpu_index_self] |= 1U << LEON3_mp_irq; _SMP_Start_multitasking_on_secondary_processor(); } @@ -51,8 +56,8 @@ uint32_t _CPU_SMP_Initialize( void ) leon3_set_cache_control_register(0x80000F); if ( rtems_configuration_get_maximum_processors() > 1 ) { - LEON_Unmask_interrupt(LEON3_MP_IRQ); - set_vector(bsp_inter_processor_interrupt, LEON_TRAP_TYPE(LEON3_MP_IRQ), 1); + LEON_Unmask_interrupt(LEON3_mp_irq); + set_vector(bsp_inter_processor_interrupt, LEON_TRAP_TYPE(LEON3_mp_irq), 1); } return leon3_get_cpu_count(LEON3_IrqCtrl_Regs); @@ -79,7 +84,7 @@ void _CPU_SMP_Finalize_initialization( uint32_t cpu_count ) void _CPU_SMP_Send_interrupt(uint32_t target_processor_index) { /* send interrupt to destination CPU */ - LEON3_IrqCtrl_Regs->force[target_processor_index] = 1 << LEON3_MP_IRQ; + LEON3_IrqCtrl_Regs->force[target_processor_index] = 1 << LEON3_mp_irq; } void _LEON3_Start_multitasking( |