Diff: TARGET_LPC824/core_caFunc.h

Revision:

95:7e07b6fb45cf

Parent:

92:4fc01daae5a5

--- a/TARGET_LPC824/core_caFunc.h	Mon Feb 16 16:32:49 2015 +0000
+++ b/TARGET_LPC824/core_caFunc.h	Wed Mar 04 07:31:39 2015 +0100
@@ -578,7 +578,576 @@
 
 #elif (defined (__GNUC__)) /*------------------ GNU Compiler ---------------------*/
 
-//#error GNU Compiler support not implemented for Cortex-A
+/* GNU gcc specific functions */
+
+#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
+
+
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __enable_irq(void)
+{
+    __ASM volatile ("cpsie i");
+}
+
+/** \brief  Disable IRQ Interrupts
+
+  This function disables IRQ interrupts by setting the I-bit in the CPSR.
+  Can only be executed in Privileged modes.
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __disable_irq(void)
+{
+    uint32_t result;
+
+    __ASM volatile ("mrs %0, cpsr" : "=r" (result));
+    __ASM volatile ("cpsid i");
+    return(result & 0x80);
+}
+
+
+/** \brief  Get APSR Register
+
+    This function returns the content of the APSR Register.
+
+    \return               APSR Register value
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_APSR(void)
+{
+#if 1
+    uint32_t result;
+
+    __ASM volatile ("mrs %0, apsr" : "=r" (result) );
+    return (result);
+#else
+  register uint32_t __regAPSR          __ASM("apsr");
+  return(__regAPSR);
+#endif
+}
+
+
+/** \brief  Get CPSR Register
+
+    This function returns the content of the CPSR Register.
+
+    \return               CPSR Register value
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_CPSR(void)
+{
+#if 1
+  register uint32_t __regCPSR;
+  __ASM volatile ("mrs %0, cpsr" : "=r" (__regCPSR));
+#else
+  register uint32_t __regCPSR          __ASM("cpsr");
+#endif
+  return(__regCPSR);
+}
+
+#if 0
+/** \brief  Set Stack Pointer
+
+    This function assigns the given value to the current stack pointer.
+
+    \param [in]    topOfStack  Stack Pointer value to set
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __set_SP(uint32_t topOfStack)
+{
+    register uint32_t __regSP       __ASM("sp");
+    __regSP = topOfStack;
+}
+#endif
+
+/** \brief  Get link register
+
+    This function returns the value of the link register
+
+    \return    Value of link register
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_LR(void)
+{
+  register uint32_t __reglr         __ASM("lr");
+  return(__reglr);
+}
+
+#if 0
+/** \brief  Set link register
+
+    This function sets the value of the link register
+
+    \param [in]    lr  LR value to set
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __set_LR(uint32_t lr)
+{
+  register uint32_t __reglr         __ASM("lr");
+  __reglr = lr;
+}
+#endif
+
+/** \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
+ */
+extern void __set_PSP(uint32_t topOfProcStack);
+
+/** \brief  Set User Mode
+
+    This function changes the processor state to User Mode
+
+    \param [in]    topOfProcStack  USR/SYS Stack Pointer value to set
+ */
+extern void __set_CPS_USR(void);
+
+/** \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
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_FPSCR(void)
+{
+#if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
+#if 1
+    uint32_t result;
+
+    __ASM volatile ("vmrs %0, fpscr" : "=r" (result) );
+    return (result);
+#else
+  register uint32_t __regfpscr         __ASM("fpscr");
+  return(__regfpscr);
+#endif
+#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
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __set_FPSCR(uint32_t fpscr)
+{
+#if (__FPU_PRESENT == 1) && (__FPU_USED == 1)
+#if 1
+    __ASM volatile ("vmsr fpscr, %0" : : "r" (fpscr) );
+#else
+  register uint32_t __regfpscr         __ASM("fpscr");
+  __regfpscr = (fpscr);
+#endif
+#endif
+}
+
+/** \brief  Get FPEXC
+
+    This function returns the current value of the Floating Point Exception Control register.
+
+    \return               Floating Point Exception Control register value
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_FPEXC(void)
+{
+#if (__FPU_PRESENT == 1)
+#if 1
+    uint32_t result;
+
+    __ASM volatile ("vmrs %0, fpexc" : "=r" (result));
+    return (result);
+#else
+  register uint32_t __regfpexc         __ASM("fpexc");
+  return(__regfpexc);
+#endif
+#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
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __set_FPEXC(uint32_t fpexc)
+{
+#if (__FPU_PRESENT == 1)
+#if 1
+    __ASM volatile ("vmsr fpexc, %0" : : "r" (fpexc));
+#else
+  register uint32_t __regfpexc         __ASM("fpexc");
+  __regfpexc = (fpexc);
+#endif
+#endif
+}
+
+/** \brief  Get CPACR
+
+    This function returns the current value of the Coprocessor Access Control register.
+
+    \return               Coprocessor Access Control register value
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_CPACR(void)
+{
+#if 1
+    register uint32_t __regCPACR;
+    __ASM volatile ("mrc p15, 0, %0, c1, c0, 2" : "=r" (__regCPACR));
+#else
+    register uint32_t __regCPACR         __ASM("cp15:0:c1:c0:2");
+#endif
+    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
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __set_CPACR(uint32_t cpacr)
+{
+#if 1
+    __ASM volatile ("mcr p15, 0, %0, c1, c0, 2" : : "r" (cpacr));
+#else
+    register uint32_t __regCPACR         __ASM("cp15:0:c1:c0:2");
+    __regCPACR = cpacr;
+#endif
+    __ISB();
+}
+
+/** \brief  Get CBAR
+
+    This function returns the value of the Configuration Base Address register.
+
+    \return               Configuration Base Address register value
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_CBAR() {
+#if 1
+    register uint32_t __regCBAR;
+    __ASM volatile ("mrc p15, 4, %0, c15, c0, 0" : "=r" (__regCBAR));
+#else
+    register uint32_t __regCBAR         __ASM("cp15:4:c15:c0:0");
+#endif
+    return(__regCBAR);
+}
+
+/** \brief  Get TTBR0
+
+    This function returns the value of the Configuration Base Address register.
+
+    \return               Translation Table Base Register 0 value
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_TTBR0() {
+#if 1
+    register uint32_t __regTTBR0;
+    __ASM volatile ("mrc p15, 0, %0, c2, c0, 0" : "=r" (__regTTBR0));
+#else
+    register uint32_t __regTTBR0        __ASM("cp15:0:c2:c0:0");
+#endif
+    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
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __set_TTBR0(uint32_t ttbr0) {
+#if 1
+	__ASM volatile ("mcr p15, 0, %0, c2, c0, 0" : : "r" (ttbr0));
+#else
+    register uint32_t __regTTBR0        __ASM("cp15:0:c2:c0:0");
+    __regTTBR0 = ttbr0;
+#endif
+    __ISB();
+}
+
+/** \brief  Get DACR
+
+    This function returns the value of the Domain Access Control Register.
+
+    \return               Domain Access Control Register value
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_DACR() {
+#if 1
+    register uint32_t __regDACR;
+    __ASM volatile ("mrc p15, 0, %0, c3, c0, 0" : "=r" (__regDACR));
+#else
+    register uint32_t __regDACR         __ASM("cp15:0:c3:c0:0");
+#endif
+    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
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __set_DACR(uint32_t dacr) {
+#if 1
+	__ASM volatile ("mcr p15, 0, %0, c3, c0, 0" : : "r" (dacr));
+#else
+    register uint32_t __regDACR         __ASM("cp15:0:c3:c0:0");
+    __regDACR = dacr;
+#endif
+    __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
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __set_SCTLR(uint32_t sctlr)
+{
+#if 1
+	__ASM volatile ("mcr p15, 0, %0, c1, c0, 0" : : "r" (sctlr));
+#else
+    register uint32_t __regSCTLR         __ASM("cp15:0:c1:c0:0");
+    __regSCTLR = sctlr;
+#endif
+}
+
+/** \brief  Get SCTLR
+
+    This function returns the value of the System Control Register.
+
+    \return               System Control Register value
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_SCTLR() {
+#if 1
+	register uint32_t __regSCTLR;
+	__ASM volatile ("mrc p15, 0, %0, c1, c0, 0" : "=r" (__regSCTLR));
+#else
+    register uint32_t __regSCTLR         __ASM("cp15:0:c1:c0:0");
+#endif
+    return(__regSCTLR);
+}
+
+/** \brief  Enable Caches
+
+    Enable Caches
+ */
+__attribute__( ( always_inline ) ) __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
+ */
+__attribute__( ( always_inline ) ) __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
+ */
+__attribute__( ( always_inline ) ) __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
+ */
+__attribute__( ( always_inline ) ) __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
+ */
+__attribute__( ( always_inline ) ) __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
+ */
+__attribute__( ( always_inline ) ) __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
+ */
+
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __ca9u_inv_tlb_all(void) {
+#if 1
+	__ASM volatile ("mcr p15, 0, %0, c8, c7, 0" : : "r" (0));
+#else
+    register uint32_t __TLBIALL         __ASM("cp15:0:c8:c7:0");
+    __TLBIALL = 0;
+#endif
+    __DSB();
+    __ISB();
+}
+
+/******************************** BTB maintenance operations ************************************************/
+/** \brief  Invalidate entire branch predictor array
+
+    BPIALL. Branch Predictor Invalidate All.
+ */
+
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_inv_btac(void) {
+#if 1
+	__ASM volatile ("mcr p15, 0, %0, c7, c5, 6" : : "r" (0));
+#else
+    register uint32_t __BPIALL          __ASM("cp15:0:c7:c5:6");
+    __BPIALL  = 0;
+#endif
+    __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
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_inv_icache_all(void) {
+#if 1
+	__ASM volatile ("mcr p15, 0, %0, c7, c5, 0" : : "r" (0));
+#else
+    register uint32_t __ICIALLU         __ASM("cp15:0:c7:c5:0");
+    __ICIALLU = 0;
+#endif
+    __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
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_clean_dcache_mva(void *va) {
+#if 1
+    __ASM volatile ("mcr p15, 0, %0, c7, c10, 1" : : "r" ((uint32_t)va));
+#else
+    register uint32_t __DCCMVAC         __ASM("cp15:0:c7:c10:1");
+    __DCCMVAC = (uint32_t)va;
+#endif
+    __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
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_inv_dcache_mva(void *va) {
+#if 1
+    __ASM volatile ("mcr p15, 0, %0, c7, c6, 1" : : "r" ((uint32_t)va));
+#else
+    register uint32_t __DCIMVAC         __ASM("cp15:0:c7:c6:1");
+    __DCIMVAC = (uint32_t)va;
+#endif
+    __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
+ */
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_clean_inv_dcache_mva(void *va) {
+#if 1
+    __ASM volatile ("mcr p15, 0, %0, c7, c14, 1" : : "r" ((uint32_t)va));
+#else
+    register uint32_t __DCCIMVAC        __ASM("cp15:0:c7:c14:1");
+    __DCCIMVAC = (uint32_t)va;
+#endif
+    __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.
+ */
+
+/** \brief  __v7_all_cache - helper function
+
+ */
+
+extern void __v7_all_cache(uint32_t op);
+
+
+/** \brief  Invalidate the whole D$
+
+    DCISW. Invalidate by Set/Way
+ */
+
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_inv_dcache_all(void) {
+    __v7_all_cache(0);
+}
+
+/** \brief  Clean the whole D$
+
+    DCCSW. Clean by Set/Way
+ */
+
+__attribute__( ( always_inline ) ) __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
+ */
+
+__attribute__( ( always_inline ) ) __STATIC_INLINE void __v7_clean_inv_dcache_all(void) {
+    __v7_all_cache(2);
+}
+
+#include "core_ca_mmu.h"
 
 #elif (defined (__TASKING__)) /*--------------- TASKING Compiler -----------------*/