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Diff: TARGET_NUCLEO_L152RE/core_caFunc.h
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diff -r 031413cf7a89 -r 4fc01daae5a5 TARGET_NUCLEO_L152RE/core_caFunc.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_NUCLEO_L152RE/core_caFunc.h Thu Nov 27 13:33:22 2014 +0000 @@ -0,0 +1,592 @@ +/**************************************************************************//** + * @file core_caFunc.h + * @brief CMSIS Cortex-A Core Function Access Header File + * @version V3.10 + * @date 9 May 2013 + * + * @note + * + ******************************************************************************/ +/* Copyright (c) 2009 - 2012 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. + ---------------------------------------------------------------------------*/ + + +#ifndef __CORE_CAFUNC_H__ +#define __CORE_CAFUNC_H__ + + +/* ########################### Core Function Access ########################### */ +/** \ingroup CMSIS_Core_FunctionInterface + \defgroup CMSIS_Core_RegAccFunctions CMSIS Core Register Access Functions + @{ + */ + +#if defined ( __CC_ARM ) /*------------------RealView Compiler -----------------*/ +/* ARM armcc specific functions */ + +#if (__ARMCC_VERSION < 400677) + #error "Please use ARM Compiler Toolchain V4.0.677 or later!" +#endif + +#define MODE_USR 0x10 +#define MODE_FIQ 0x11 +#define MODE_IRQ 0x12 +#define MODE_SVC 0x13 +#define MODE_MON 0x16 +#define MODE_ABT 0x17 +#define MODE_HYP 0x1A +#define MODE_UND 0x1B +#define MODE_SYS 0x1F + +/** \brief Get APSR Register + + This function returns the content of the APSR Register. + + \return APSR Register value + */ +__STATIC_INLINE uint32_t __get_APSR(void) +{ + register uint32_t __regAPSR __ASM("apsr"); + return(__regAPSR); +} + + +/** \brief Get CPSR Register + + This function returns the content of the CPSR Register. + + \return CPSR Register value + */ +__STATIC_INLINE uint32_t __get_CPSR(void) +{ + register uint32_t __regCPSR __ASM("cpsr"); + return(__regCPSR); +} + +/** \brief Set Stack Pointer + + This function assigns the given value to the current stack pointer. + + \param [in] topOfStack Stack Pointer value to set + */ +register uint32_t __regSP __ASM("sp"); +__STATIC_INLINE void __set_SP(uint32_t topOfStack) +{ + __regSP = topOfStack; +} + + +/** \brief Get link register + + This function returns the value of the link register + + \return Value of link register + */ +register uint32_t __reglr __ASM("lr"); +__STATIC_INLINE uint32_t __get_LR(void) +{ + return(__reglr); +} + +/** \brief Set link register + + This function sets the value of the link register + + \param [in] lr LR value to set + */ +__STATIC_INLINE void __set_LR(uint32_t lr) +{ + __reglr = lr; +} + +/** \brief Set Process Stack Pointer + + This function assigns the given value to the USR/SYS Stack Pointer (PSP). + + \param [in] topOfProcStack USR/SYS Stack Pointer value to set + */ +__STATIC_ASM void __set_PSP(uint32_t topOfProcStack) +{ + ARM + PRESERVE8 + + BIC R0, R0, #7 ;ensure stack is 8-byte aligned + MRS R1, CPSR + CPS #MODE_SYS ;no effect in USR mode + MOV SP, R0 + MSR CPSR_c, R1 ;no effect in USR mode + ISB + BX LR + +} + +/** \brief Set User Mode + + This function changes the processor state to User Mode + + \param [in] topOfProcStack USR/SYS Stack Pointer value to set + */ +__STATIC_ASM void __set_CPS_USR(void) +{ + ARM + + CPS #MODE_USR + BX LR +} + + +/** \brief Enable FIQ + + This function enables FIQ interrupts by clearing the F-bit in the CPSR. + Can only be executed in Privileged modes. + */ +#define __enable_fault_irq __enable_fiq + + +/** \brief Disable FIQ + + This function disables FIQ interrupts by setting the F-bit in the CPSR. + Can only be executed in Privileged modes. + */ +#define __disable_fault_irq __disable_fiq + + +/** \brief Get FPSCR + + This function returns the current value of the Floating Point Status/Control register. + + \return Floating Point Status/Control register value + */ +__STATIC_INLINE uint32_t __get_FPSCR(void) +{ +#if (__FPU_PRESENT == 1) && (__FPU_USED == 1) + register uint32_t __regfpscr __ASM("fpscr"); + return(__regfpscr); +#else + return(0); +#endif +} + + +/** \brief Set FPSCR + + This function assigns the given value to the Floating Point Status/Control register. + + \param [in] fpscr Floating Point Status/Control value to set + */ +__STATIC_INLINE void __set_FPSCR(uint32_t fpscr) +{ +#if (__FPU_PRESENT == 1) && (__FPU_USED == 1) + register uint32_t __regfpscr __ASM("fpscr"); + __regfpscr = (fpscr); +#endif +} + +/** \brief Get FPEXC + + This function returns the current value of the Floating Point Exception Control register. + + \return Floating Point Exception Control register value + */ +__STATIC_INLINE uint32_t __get_FPEXC(void) +{ +#if (__FPU_PRESENT == 1) + register uint32_t __regfpexc __ASM("fpexc"); + return(__regfpexc); +#else + return(0); +#endif +} + + +/** \brief Set FPEXC + + This function assigns the given value to the Floating Point Exception Control register. + + \param [in] fpscr Floating Point Exception Control value to set + */ +__STATIC_INLINE void __set_FPEXC(uint32_t fpexc) +{ +#if (__FPU_PRESENT == 1) + register uint32_t __regfpexc __ASM("fpexc"); + __regfpexc = (fpexc); +#endif +} + +/** \brief Get CPACR + + This function returns the current value of the Coprocessor Access Control register. + + \return Coprocessor Access Control register value + */ +__STATIC_INLINE uint32_t __get_CPACR(void) +{ + register uint32_t __regCPACR __ASM("cp15:0:c1:c0:2"); + return __regCPACR; +} + +/** \brief Set CPACR + + This function assigns the given value to the Coprocessor Access Control register. + + \param [in] cpacr Coporcessor Acccess Control value to set + */ +__STATIC_INLINE void __set_CPACR(uint32_t cpacr) +{ + register uint32_t __regCPACR __ASM("cp15:0:c1:c0:2"); + __regCPACR = cpacr; + __ISB(); +} + +/** \brief Get CBAR + + This function returns the value of the Configuration Base Address register. + + \return Configuration Base Address register value + */ +__STATIC_INLINE uint32_t __get_CBAR() { + register uint32_t __regCBAR __ASM("cp15:4:c15:c0:0"); + return(__regCBAR); +} + +/** \brief Get TTBR0 + + This function returns the value of the Configuration Base Address register. + + \return Translation Table Base Register 0 value + */ +__STATIC_INLINE uint32_t __get_TTBR0() { + register uint32_t __regTTBR0 __ASM("cp15:0:c2:c0:0"); + return(__regTTBR0); +} + +/** \brief Set TTBR0 + + This function assigns the given value to the Coprocessor Access Control register. + + \param [in] ttbr0 Translation Table Base Register 0 value to set + */ +__STATIC_INLINE void __set_TTBR0(uint32_t ttbr0) { + register uint32_t __regTTBR0 __ASM("cp15:0:c2:c0:0"); + __regTTBR0 = ttbr0; + __ISB(); +} + +/** \brief Get DACR + + This function returns the value of the Domain Access Control Register. + + \return Domain Access Control Register value + */ +__STATIC_INLINE uint32_t __get_DACR() { + register uint32_t __regDACR __ASM("cp15:0:c3:c0:0"); + return(__regDACR); +} + +/** \brief Set DACR + + This function assigns the given value to the Coprocessor Access Control register. + + \param [in] dacr Domain Access Control Register value to set + */ +__STATIC_INLINE void __set_DACR(uint32_t dacr) { + register uint32_t __regDACR __ASM("cp15:0:c3:c0:0"); + __regDACR = dacr; + __ISB(); +} + +/******************************** Cache and BTAC enable ****************************************************/ + +/** \brief Set SCTLR + + This function assigns the given value to the System Control Register. + + \param [in] sctlr System Control Register, value to set + */ +__STATIC_INLINE void __set_SCTLR(uint32_t sctlr) +{ + register uint32_t __regSCTLR __ASM("cp15:0:c1:c0:0"); + __regSCTLR = sctlr; +} + +/** \brief Get SCTLR + + This function returns the value of the System Control Register. + + \return System Control Register value + */ +__STATIC_INLINE uint32_t __get_SCTLR() { + register uint32_t __regSCTLR __ASM("cp15:0:c1:c0:0"); + return(__regSCTLR); +} + +/** \brief Enable Caches + + Enable Caches + */ +__STATIC_INLINE void __enable_caches(void) { + // Set I bit 12 to enable I Cache + // Set C bit 2 to enable D Cache + __set_SCTLR( __get_SCTLR() | (1 << 12) | (1 << 2)); +} + +/** \brief Disable Caches + + Disable Caches + */ +__STATIC_INLINE void __disable_caches(void) { + // Clear I bit 12 to disable I Cache + // Clear C bit 2 to disable D Cache + __set_SCTLR( __get_SCTLR() & ~(1 << 12) & ~(1 << 2)); + __ISB(); +} + +/** \brief Enable BTAC + + Enable BTAC + */ +__STATIC_INLINE void __enable_btac(void) { + // Set Z bit 11 to enable branch prediction + __set_SCTLR( __get_SCTLR() | (1 << 11)); + __ISB(); +} + +/** \brief Disable BTAC + + Disable BTAC + */ +__STATIC_INLINE void __disable_btac(void) { + // Clear Z bit 11 to disable branch prediction + __set_SCTLR( __get_SCTLR() & ~(1 << 11)); +} + + +/** \brief Enable MMU + + Enable MMU + */ +__STATIC_INLINE void __enable_mmu(void) { + // Set M bit 0 to enable the MMU + // Set AFE bit to enable simplified access permissions model + // Clear TRE bit to disable TEX remap and A bit to disable strict alignment fault checking + __set_SCTLR( (__get_SCTLR() & ~(1 << 28) & ~(1 << 1)) | 1 | (1 << 29)); + __ISB(); +} + +/** \brief Enable MMU + + Enable MMU + */ +__STATIC_INLINE void __disable_mmu(void) { + // Clear M bit 0 to disable the MMU + __set_SCTLR( __get_SCTLR() & ~1); + __ISB(); +} + +/******************************** TLB maintenance operations ************************************************/ +/** \brief Invalidate the whole tlb + + TLBIALL. Invalidate the whole tlb + */ + +__STATIC_INLINE void __ca9u_inv_tlb_all(void) { + register uint32_t __TLBIALL __ASM("cp15:0:c8:c7:0"); + __TLBIALL = 0; + __DSB(); + __ISB(); +} + +/******************************** BTB maintenance operations ************************************************/ +/** \brief Invalidate entire branch predictor array + + BPIALL. Branch Predictor Invalidate All. + */ + +__STATIC_INLINE void __v7_inv_btac(void) { + register uint32_t __BPIALL __ASM("cp15:0:c7:c5:6"); + __BPIALL = 0; + __DSB(); //ensure completion of the invalidation + __ISB(); //ensure instruction fetch path sees new state +} + + +/******************************** L1 cache operations ******************************************************/ + +/** \brief Invalidate the whole I$ + + ICIALLU. Instruction Cache Invalidate All to PoU + */ +__STATIC_INLINE void __v7_inv_icache_all(void) { + register uint32_t __ICIALLU __ASM("cp15:0:c7:c5:0"); + __ICIALLU = 0; + __DSB(); //ensure completion of the invalidation + __ISB(); //ensure instruction fetch path sees new I cache state +} + +/** \brief Clean D$ by MVA + + DCCMVAC. Data cache clean by MVA to PoC + */ +__STATIC_INLINE void __v7_clean_dcache_mva(void *va) { + register uint32_t __DCCMVAC __ASM("cp15:0:c7:c10:1"); + __DCCMVAC = (uint32_t)va; + __DMB(); //ensure the ordering of data cache maintenance operations and their effects +} + +/** \brief Invalidate D$ by MVA + + DCIMVAC. Data cache invalidate by MVA to PoC + */ +__STATIC_INLINE void __v7_inv_dcache_mva(void *va) { + register uint32_t __DCIMVAC __ASM("cp15:0:c7:c6:1"); + __DCIMVAC = (uint32_t)va; + __DMB(); //ensure the ordering of data cache maintenance operations and their effects +} + +/** \brief Clean and Invalidate D$ by MVA + + DCCIMVAC. Data cache clean and invalidate by MVA to PoC + */ +__STATIC_INLINE void __v7_clean_inv_dcache_mva(void *va) { + register uint32_t __DCCIMVAC __ASM("cp15:0:c7:c14:1"); + __DCCIMVAC = (uint32_t)va; + __DMB(); //ensure the ordering of data cache maintenance operations and their effects +} + +/** \brief + * Generic mechanism for cleaning/invalidating the entire data or unified cache to the point of coherency. + */ +#pragma push +#pragma arm +__STATIC_ASM void __v7_all_cache(uint32_t op) { + ARM + + PUSH {R4-R11} + + MRC p15, 1, R6, c0, c0, 1 // Read CLIDR + ANDS R3, R6, #0x07000000 // Extract coherency level + MOV R3, R3, LSR #23 // Total cache levels << 1 + BEQ Finished // If 0, no need to clean + + MOV R10, #0 // R10 holds current cache level << 1 +Loop1 ADD R2, R10, R10, LSR #1 // R2 holds cache "Set" position + MOV R1, R6, LSR R2 // Bottom 3 bits are the Cache-type for this level + AND R1, R1, #7 // Isolate those lower 3 bits + CMP R1, #2 + BLT Skip // No cache or only instruction cache at this level + + MCR p15, 2, R10, c0, c0, 0 // Write the Cache Size selection register + ISB // ISB to sync the change to the CacheSizeID reg + MRC p15, 1, R1, c0, c0, 0 // Reads current Cache Size ID register + AND R2, R1, #7 // Extract the line length field + ADD R2, R2, #4 // Add 4 for the line length offset (log2 16 bytes) + LDR R4, =0x3FF + ANDS R4, R4, R1, LSR #3 // R4 is the max number on the way size (right aligned) + CLZ R5, R4 // R5 is the bit position of the way size increment + LDR R7, =0x7FFF + ANDS R7, R7, R1, LSR #13 // R7 is the max number of the index size (right aligned) + +Loop2 MOV R9, R4 // R9 working copy of the max way size (right aligned) + +Loop3 ORR R11, R10, R9, LSL R5 // Factor in the Way number and cache number into R11 + ORR R11, R11, R7, LSL R2 // Factor in the Set number + CMP R0, #0 + BNE Dccsw + MCR p15, 0, R11, c7, c6, 2 // DCISW. Invalidate by Set/Way + B cont +Dccsw CMP R0, #1 + BNE Dccisw + MCR p15, 0, R11, c7, c10, 2 // DCCSW. Clean by Set/Way + B cont +Dccisw MCR p15, 0, R11, c7, c14, 2 // DCCISW, Clean and Invalidate by Set/Way +cont SUBS R9, R9, #1 // Decrement the Way number + BGE Loop3 + SUBS R7, R7, #1 // Decrement the Set number + BGE Loop2 +Skip ADD R10, R10, #2 // increment the cache number + CMP R3, R10 + BGT Loop1 + +Finished + DSB + POP {R4-R11} + BX lr + +} +#pragma pop + +/** \brief __v7_all_cache - helper function + + */ + +/** \brief Invalidate the whole D$ + + DCISW. Invalidate by Set/Way + */ + +__STATIC_INLINE void __v7_inv_dcache_all(void) { + __v7_all_cache(0); +} + +/** \brief Clean the whole D$ + + DCCSW. Clean by Set/Way + */ + +__STATIC_INLINE void __v7_clean_dcache_all(void) { + __v7_all_cache(1); +} + +/** \brief Clean and invalidate the whole D$ + + DCCISW. Clean and Invalidate by Set/Way + */ + +__STATIC_INLINE void __v7_clean_inv_dcache_all(void) { + __v7_all_cache(2); +} + +#include "core_ca_mmu.h" + +#elif (defined (__ICCARM__)) /*---------------- ICC Compiler ---------------------*/ + +#error IAR Compiler support not implemented for Cortex-A + +#elif (defined (__GNUC__)) /*------------------ GNU Compiler ---------------------*/ + +//#error GNU Compiler support not implemented for Cortex-A + +#elif (defined (__TASKING__)) /*--------------- TASKING Compiler -----------------*/ + +#error TASKING Compiler support not implemented for Cortex-A + +#endif + +/*@} end of CMSIS_Core_RegAccFunctions */ + + +#endif /* __CORE_CAFUNC_H__ */