Diff: TARGET_LPC1768/core_caFunc.h

Revision:

92:4fc01daae5a5

Child:

95:7e07b6fb45cf

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TARGET_LPC1768/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__ */