diff options
Diffstat (limited to 'bsps/arm/xilinx-zynq/start/bspsmp.c')
-rw-r--r-- | bsps/arm/xilinx-zynq/start/bspsmp.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/bsps/arm/xilinx-zynq/start/bspsmp.c b/bsps/arm/xilinx-zynq/start/bspsmp.c new file mode 100644 index 0000000000..b516823243 --- /dev/null +++ b/bsps/arm/xilinx-zynq/start/bspsmp.c @@ -0,0 +1,39 @@ +/* + * Copyright (c) 2014 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Dornierstr. 4 + * 82178 Puchheim + * Germany + * <info@embedded-brains.de> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#include <rtems/score/smpimpl.h> + +#include <bsp/start.h> + +bool _CPU_SMP_Start_processor(uint32_t cpu_index) +{ + /* + * Enable the second CPU. + */ + if (cpu_index != 0) { + volatile uint32_t* const kick_address = (uint32_t*) 0xfffffff0UL; + _ARM_Data_synchronization_barrier(); + _ARM_Instruction_synchronization_barrier(); + *kick_address = (uint32_t) _start; + _ARM_Data_synchronization_barrier(); + _ARM_Instruction_synchronization_barrier(); + _ARM_Send_event(); + } + + /* + * Wait for secondary processor to complete its basic initialization so that + * we can enable the unified L2 cache. + */ + return _Per_CPU_State_wait_for_non_initial_state(cpu_index, 0); +} |