diff options
Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_RENESAS/TARGET_RZ_A1H/system_MBRZA1H.c')
| -rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_RENESAS/TARGET_RZ_A1H/system_MBRZA1H.c | 384 |
1 files changed, 384 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_RENESAS/TARGET_RZ_A1H/system_MBRZA1H.c b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_RENESAS/TARGET_RZ_A1H/system_MBRZA1H.c new file mode 100644 index 0000000000..3a37c602c0 --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_RENESAS/TARGET_RZ_A1H/system_MBRZA1H.c @@ -0,0 +1,384 @@ +/**************************************************************************//** + * @file system_MBRZA1H.c + * @brief CMSIS Device System Source File for + * ARMCA9 Device Series + * @version V1.00 + * @date 19 Sept 2013 + * + * @note + * + ******************************************************************************/ +/* Copyright (c) 2011 - 2013 ARM LIMITED + + All rights reserved. + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + - Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + - Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + - Neither the name of ARM nor the names of its contributors may be used + to endorse or promote products derived from this software without + specific prior written permission. + * + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + POSSIBILITY OF SUCH DAMAGE. + ---------------------------------------------------------------------------*/ + + +#include <stdint.h> +#include "MBRZA1H.h" +#include "RZ_A1_Init.h" + + +#if defined(__ARMCC_VERSION) +extern void $Super$$main(void); +__asm void FPUEnable(void); +#else +void FPUEnable(void); + +#endif + +uint32_t IRQNestLevel; + + +#if defined(__ARMCC_VERSION) +/** + * Initialize the cache. + * + * @param none + * @return none + * + * @brief Initialise caches. Requires PL1, so implemented as an SVC in case threads are USR mode. + */ +#pragma push +#pragma arm + +void InitMemorySubsystem(void) { + + /* This SVC is specific for reset where data / tlb / btac may contain undefined data, therefore before + * enabling the cache you must invalidate the instruction cache, the data cache, TLB, and BTAC. + * You are not required to invalidate the main TLB, even though it is recommended for safety + * reasons. This ensures compatibility with future revisions of the processor. */ + + unsigned int l2_id; + + /* Invalidate undefined data */ + __ca9u_inv_tlb_all(); + __v7_inv_icache_all(); + __v7_inv_dcache_all(); + __v7_inv_btac(); + + /* Don't use this function during runtime since caches may contain valid data. For a correct cache maintenance you may need to execute a clean and + * invalidate in order to flush the valid data to the next level cache. + */ + __enable_mmu(); + + /* After MMU is enabled and data has been invalidated, enable caches and BTAC */ + __enable_caches(); + __enable_btac(); + + /* If present, you may also need to Invalidate and Enable L2 cache here */ + l2_id = PL310_GetID(); + if (l2_id) + { + PL310_InvAllByWay(); + PL310_Enable(); + } +} +#pragma pop + +#elif defined(__GNUC__) + +void InitMemorySubsystem(void) { + + /* This SVC is specific for reset where data / tlb / btac may contain undefined data, therefore before + * enabling the cache you must invalidate the instruction cache, the data cache, TLB, and BTAC. + * You are not required to invalidate the main TLB, even though it is recommended for safety + * reasons. This ensures compatibility with future revisions of the processor. */ + + unsigned int l2_id; + + /* Invalidate undefined data */ + __ca9u_inv_tlb_all(); + __v7_inv_icache_all(); + __v7_inv_dcache_all(); + __v7_inv_btac(); + + /* Don't use this function during runtime since caches may contain valid data. For a correct cache maintenance you may need to execute a clean and + * invalidate in order to flush the valid data to the next level cache. + */ + __enable_mmu(); + + /* After MMU is enabled and data has been invalidated, enable caches and BTAC */ + __enable_caches(); + __enable_btac(); + + /* If present, you may also need to Invalidate and Enable L2 cache here */ + l2_id = PL310_GetID(); + if (l2_id) + { + PL310_InvAllByWay(); + PL310_Enable(); + } +} +#else + +#endif + + +IRQHandler IRQTable[Renesas_RZ_A1_IRQ_MAX+1]; + +uint32_t IRQCount = sizeof IRQTable / 4; + +uint32_t InterruptHandlerRegister (IRQn_Type irq, IRQHandler handler) +{ + if (irq < IRQCount) { + IRQTable[irq] = handler; + return 0; + } + else { + return 1; + } +} + +uint32_t InterruptHandlerUnregister (IRQn_Type irq) +{ + if (irq < IRQCount) { + IRQTable[irq] = 0; + return 0; + } + else { + return 1; + } +} + +/** + * Initialize the system + * + * @param none + * @return none + * + * @brief Setup the microcontroller system. + * Initialize the System. + */ +void SystemInit (void) +{ + IRQNestLevel = 0; +/* do not use global variables because this function is called before + reaching pre-main. RW section maybe overwritten afterwards. */ + RZ_A1_InitClock(); + RZ_A1_InitBus(); + + //Configure GIC ICDICFR GIC_SetICDICFR() + GIC_Enable(); + __enable_irq(); + +} + + +//Fault Status Register (IFSR/DFSR) definitions +#define FSR_ALIGNMENT_FAULT 0x01 //DFSR only. Fault on first lookup +#define FSR_INSTRUCTION_CACHE_MAINTAINANCE 0x04 //DFSR only - async/external +#define FSR_SYNC_EXT_TTB_WALK_FIRST 0x0c //sync/external +#define FSR_SYNC_EXT_TTB_WALK_SECOND 0x0e //sync/external +#define FSR_SYNC_PARITY_TTB_WALK_FIRST 0x1c //sync/external +#define FSR_SYNC_PARITY_TTB_WALK_SECOND 0x1e //sync/external +#define FSR_TRANSLATION_FAULT_FIRST 0x05 //MMU Fault - internal +#define FSR_TRANSLATION_FAULT_SECOND 0x07 //MMU Fault - internal +#define FSR_ACCESS_FLAG_FAULT_FIRST 0x03 //MMU Fault - internal +#define FSR_ACCESS_FLAG_FAULT_SECOND 0x06 //MMU Fault - internal +#define FSR_DOMAIN_FAULT_FIRST 0x09 //MMU Fault - internal +#define FSR_DOMAIN_FAULT_SECOND 0x0b //MMU Fault - internal +#define FSR_PERMISION_FAULT_FIRST 0x0f //MMU Fault - internal +#define FSR_PERMISION_FAULT_SECOND 0x0d //MMU Fault - internal +#define FSR_DEBUG_EVENT 0x02 //internal +#define FSR_SYNC_EXT_ABORT 0x08 //sync/external +#define FSR_TLB_CONFLICT_ABORT 0x10 //sync/external +#define FSR_LOCKDOWN 0x14 //internal +#define FSR_COPROCESSOR_ABORT 0x1a //internal +#define FSR_SYNC_PARITY_ERROR 0x19 //sync/external +#define FSR_ASYNC_EXTERNAL_ABORT 0x16 //DFSR only - async/external +#define FSR_ASYNC_PARITY_ERROR 0x18 //DFSR only - async/external + +void CDAbtHandler(uint32_t DFSR, uint32_t DFAR, uint32_t LR) { + uint32_t FS = (DFSR & (1 << 10)) >> 6 | (DFSR & 0x0f); //Store Fault Status + + switch(FS) { + //Synchronous parity errors - retry + case FSR_SYNC_PARITY_ERROR: + case FSR_SYNC_PARITY_TTB_WALK_FIRST: + case FSR_SYNC_PARITY_TTB_WALK_SECOND: + return; + + //Your code here. Value in DFAR is invalid for some fault statuses. + case FSR_ALIGNMENT_FAULT: + case FSR_INSTRUCTION_CACHE_MAINTAINANCE: + case FSR_SYNC_EXT_TTB_WALK_FIRST: + case FSR_SYNC_EXT_TTB_WALK_SECOND: + case FSR_TRANSLATION_FAULT_FIRST: + case FSR_TRANSLATION_FAULT_SECOND: + case FSR_ACCESS_FLAG_FAULT_FIRST: + case FSR_ACCESS_FLAG_FAULT_SECOND: + case FSR_DOMAIN_FAULT_FIRST: + case FSR_DOMAIN_FAULT_SECOND: + case FSR_PERMISION_FAULT_FIRST: + case FSR_PERMISION_FAULT_SECOND: + case FSR_DEBUG_EVENT: + case FSR_SYNC_EXT_ABORT: + case FSR_TLB_CONFLICT_ABORT: + case FSR_LOCKDOWN: + case FSR_COPROCESSOR_ABORT: + case FSR_ASYNC_EXTERNAL_ABORT: //DFAR invalid + case FSR_ASYNC_PARITY_ERROR: //DFAR invalid + default: + while(1); + } +} + +void CPAbtHandler(uint32_t IFSR, uint32_t IFAR, uint32_t LR) { + uint32_t FS = (IFSR & (1 << 10)) >> 6 | (IFSR & 0x0f); //Store Fault Status + + switch(FS) { + //Synchronous parity errors - retry + case FSR_SYNC_PARITY_ERROR: + case FSR_SYNC_PARITY_TTB_WALK_FIRST: + case FSR_SYNC_PARITY_TTB_WALK_SECOND: + return; + + //Your code here. Value in IFAR is invalid for some fault statuses. + case FSR_SYNC_EXT_TTB_WALK_FIRST: + case FSR_SYNC_EXT_TTB_WALK_SECOND: + case FSR_TRANSLATION_FAULT_FIRST: + case FSR_TRANSLATION_FAULT_SECOND: + case FSR_ACCESS_FLAG_FAULT_FIRST: + case FSR_ACCESS_FLAG_FAULT_SECOND: + case FSR_DOMAIN_FAULT_FIRST: + case FSR_DOMAIN_FAULT_SECOND: + case FSR_PERMISION_FAULT_FIRST: + case FSR_PERMISION_FAULT_SECOND: + case FSR_DEBUG_EVENT: //IFAR invalid + case FSR_SYNC_EXT_ABORT: + case FSR_TLB_CONFLICT_ABORT: + case FSR_LOCKDOWN: + case FSR_COPROCESSOR_ABORT: + default: + while(1); + } +} + +//returns amount to decrement lr by +//this will be 0 when we have emulated the instruction and simply want to execute the next instruction +//this will be 2 when we have performed some maintenance and want to retry the instruction in thumb (state == 2) +//this will be 4 when we have performed some maintenance and want to retry the instruction in arm (state == 4) +uint32_t CUndefHandler(uint32_t opcode, uint32_t state, uint32_t LR) { + const unsigned int THUMB = 2; + const unsigned int ARM = 4; + //Lazy VFP/NEON initialisation and switching + if ((state == ARM && ((opcode & 0x0C000000)) >> 26 == 0x03) || + (state == THUMB && ((opcode & 0xEC000000)) >> 26 == 0x3B)) { + if (((opcode & 0x00000E00) >> 9) == 5) { //fp instruction? + FPUEnable(); + return state; + } + } + + //Add code here for other Undef cases + while(1); +} + +#if defined(__ARMCC_VERSION) +#pragma push +#pragma arm +//Critical section, called from undef handler, so systick is disabled +__asm void FPUEnable(void) { + ARM + + //Permit access to VFP registers by modifying CPACR + MRC p15,0,R1,c1,c0,2 + ORR R1,R1,#0x00F00000 + MCR p15,0,R1,c1,c0,2 + + //Enable VFP + VMRS R1,FPEXC + ORR R1,R1,#0x40000000 + VMSR FPEXC,R1 + + //Initialise VFP registers to 0 + MOV R2,#0 + VMOV D0, R2,R2 + VMOV D1, R2,R2 + VMOV D2, R2,R2 + VMOV D3, R2,R2 + VMOV D4, R2,R2 + VMOV D5, R2,R2 + VMOV D6, R2,R2 + VMOV D7, R2,R2 + VMOV D8, R2,R2 + VMOV D9, R2,R2 + VMOV D10,R2,R2 + VMOV D11,R2,R2 + VMOV D12,R2,R2 + VMOV D13,R2,R2 + VMOV D14,R2,R2 + VMOV D15,R2,R2 + + //Initialise FPSCR to a known state + VMRS R2,FPSCR + LDR R3,=0x00086060 //Mask off all bits that do not have to be preserved. Non-preserved bits can/should be zero. + AND R2,R2,R3 + VMSR FPSCR,R2 + + BX LR +} +#pragma pop + +#elif defined(__GNUC__) +void FPUEnable(void) +{ + __asm__ __volatile__ ( + ".align 2 \n\t" + ".arm \n\t" + "mrc p15,0,r1,c1,c0,2 \n\t" + "orr r1,r1,#0x00f00000 \n\t" + "mcr p15,0,r1,c1,c0,2 \n\t" + "vmrs r1,fpexc \n\t" + "orr r1,r1,#0x40000000 \n\t" + "vmsr fpexc,r1 \n\t" + "mov r2,#0 \n\t" + "vmov d0, r2,r2 \n\t" + "vmov d1, r2,r2 \n\t" + "vmov d2, r2,r2 \n\t" + "vmov d3, r2,r2 \n\t" + "vmov d4, r2,r2 \n\t" + "vmov d5, r2,r2 \n\t" + "vmov d6, r2,r2 \n\t" + "vmov d7, r2,r2 \n\t" + "vmov d8, r2,r2 \n\t" + "vmov d9, r2,r2 \n\t" + "vmov d10,r2,r2 \n\t" + "vmov d11,r2,r2 \n\t" + "vmov d12,r2,r2 \n\t" + "vmov d13,r2,r2 \n\t" + "vmov d14,r2,r2 \n\t" + "vmov d15,r2,r2 \n\t" + "vmrs r2,fpscr \n\t" + "ldr r3,=0x00086060 \n\t" + "and r2,r2,r3 \n\t" + "vmsr fpscr,r2 \n\t" + "bx lr \n\t" + ); +} +#else +#endif + |