Ricardo Benitez
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Diff: TARGET_LPC2368/core_caFunc.h
- Revision:
- 115:87f2f5183dfb
- Parent:
- 108:34e6b704fe68
--- a/TARGET_LPC2368/core_caFunc.h Tue Feb 16 14:28:01 2016 +0000
+++ b/TARGET_LPC2368/core_caFunc.h Wed Mar 02 09:58:28 2016 +0100
@@ -570,7 +570,248 @@
#elif (defined (__ICCARM__)) /*---------------- ICC Compiler ---------------------*/
-#error IAR Compiler support not implemented for Cortex-A
+#define __inline inline
+
+inline static uint32_t __disable_irq_iar() {
+ int irq_dis = __get_CPSR() & 0x80; // 7bit CPSR.I
+ __disable_irq();
+ return irq_dis;
+}
+
+#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 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
+ */
+// from rt_CMSIS.c
+__arm static inline void __set_PSP(uint32_t topOfProcStack) {
+__asm(
+ " ARM\n"
+// " PRESERVE8\n"
+
+ " BIC R0, R0, #7 ;ensure stack is 8-byte aligned \n"
+ " MRS R1, CPSR \n"
+ " CPS #0x1F ;no effect in USR mode \n" // MODE_SYS
+ " MOV SP, R0 \n"
+ " MSR CPSR_c, R1 ;no effect in USR mode \n"
+ " ISB \n"
+ " BX LR \n");
+}
+
+/** \brief Set User Mode
+
+ This function changes the processor state to User Mode
+ */
+// from rt_CMSIS.c
+__arm static inline void __set_CPS_USR(void) {
+__asm(
+ " ARM \n"
+
+ " CPS #0x10 \n" // MODE_USR
+ " BX LR\n");
+}
+
+/** \brief Set TTBR0
+
+ This function assigns the given value to the Translation Table Base Register 0.
+
+ \param [in] ttbr0 Translation Table Base Register 0 value to set
+ */
+// from mmu_Renesas_RZ_A1.c
+__STATIC_INLINE void __set_TTBR0(uint32_t ttbr0) {
+ __MCR(15, 0, ttbr0, 2, 0, 0); // reg to cp15
+ __ISB();
+}
+
+/** \brief Set DACR
+
+ This function assigns the given value to the Domain Access Control Register.
+
+ \param [in] dacr Domain Access Control Register value to set
+ */
+// from mmu_Renesas_RZ_A1.c
+__STATIC_INLINE void __set_DACR(uint32_t dacr) {
+ __MCR(15, 0, dacr, 3, 0, 0); // reg to cp15
+ __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
+ */
+// from __enable_mmu()
+__STATIC_INLINE void __set_SCTLR(uint32_t sctlr) {
+ __MCR(15, 0, sctlr, 1, 0, 0); // reg to cp15
+}
+
+/** \brief Get SCTLR
+
+ This function returns the value of the System Control Register.
+
+ \return System Control Register value
+ */
+// from __enable_mmu()
+__STATIC_INLINE uint32_t __get_SCTLR() {
+ uint32_t __regSCTLR = __MRC(15, 0, 1, 0, 0);
+ return __regSCTLR;
+}
+
+/** \brief Enable Caches
+
+ Enable Caches
+ */
+// from system_Renesas_RZ_A1.c
+__STATIC_INLINE void __enable_caches(void) {
+ __set_SCTLR( __get_SCTLR() | (1 << 12) | (1 << 2));
+}
+
+/** \brief Enable BTAC
+
+ Enable BTAC
+ */
+// from system_Renesas_RZ_A1.c
+__STATIC_INLINE void __enable_btac(void) {
+ __set_SCTLR( __get_SCTLR() | (1 << 11));
+ __ISB();
+}
+
+/** \brief Enable MMU
+
+ Enable MMU
+ */
+// from system_Renesas_RZ_A1.c
+__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();
+}
+
+/******************************** TLB maintenance operations ************************************************/
+/** \brief Invalidate the whole tlb
+
+ TLBIALL. Invalidate the whole tlb
+ */
+// from system_Renesas_RZ_A1.c
+__STATIC_INLINE void __ca9u_inv_tlb_all(void) {
+ uint32_t val = 0;
+ __MCR(15, 0, val, 8, 7, 0); // reg to cp15
+ __MCR(15, 0, val, 8, 6, 0); // reg to cp15
+ __MCR(15, 0, val, 8, 5, 0); // reg to cp15
+ __DSB();
+ __ISB();
+}
+
+/******************************** BTB maintenance operations ************************************************/
+/** \brief Invalidate entire branch predictor array
+
+ BPIALL. Branch Predictor Invalidate All.
+ */
+// from system_Renesas_RZ_A1.c
+__STATIC_INLINE void __v7_inv_btac(void) {
+ uint32_t val = 0;
+ __MCR(15, 0, val, 7, 5, 6); // reg to cp15
+ __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
+ */
+// from system_Renesas_RZ_A1.c
+__STATIC_INLINE void __v7_inv_icache_all(void) {
+ uint32_t val = 0;
+ __MCR(15, 0, val, 7, 5, 0); // reg to cp15
+ __DSB(); //ensure completion of the invalidation
+ __ISB(); //ensure instruction fetch path sees new I cache state
+}
+
+// from __v7_inv_dcache_all()
+__arm static inline void __v7_all_cache(uint32_t op) {
+__asm(
+ " ARM \n"
+
+ " PUSH {R4-R11} \n"
+
+ " MRC p15, 1, R6, c0, c0, 1\n" // Read CLIDR
+ " ANDS R3, R6, #0x07000000\n" // Extract coherency level
+ " MOV R3, R3, LSR #23\n" // Total cache levels << 1
+ " BEQ Finished\n" // If 0, no need to clean
+
+ " MOV R10, #0\n" // R10 holds current cache level << 1
+ "Loop1: ADD R2, R10, R10, LSR #1\n" // R2 holds cache "Set" position
+ " MOV R1, R6, LSR R2 \n" // Bottom 3 bits are the Cache-type for this level
+ " AND R1, R1, #7 \n" // Isolate those lower 3 bits
+ " CMP R1, #2 \n"
+ " BLT Skip \n" // No cache or only instruction cache at this level
+
+ " MCR p15, 2, R10, c0, c0, 0 \n" // Write the Cache Size selection register
+ " ISB \n" // ISB to sync the change to the CacheSizeID reg
+ " MRC p15, 1, R1, c0, c0, 0 \n" // Reads current Cache Size ID register
+ " AND R2, R1, #7 \n" // Extract the line length field
+ " ADD R2, R2, #4 \n" // Add 4 for the line length offset (log2 16 bytes)
+ " movw R4, #0x3FF \n"
+ " ANDS R4, R4, R1, LSR #3 \n" // R4 is the max number on the way size (right aligned)
+ " CLZ R5, R4 \n" // R5 is the bit position of the way size increment
+ " movw R7, #0x7FFF \n"
+ " ANDS R7, R7, R1, LSR #13 \n" // R7 is the max number of the index size (right aligned)
+
+ "Loop2: MOV R9, R4 \n" // R9 working copy of the max way size (right aligned)
+
+ "Loop3: ORR R11, R10, R9, LSL R5 \n" // Factor in the Way number and cache number into R11
+ " ORR R11, R11, R7, LSL R2 \n" // Factor in the Set number
+ " CMP R0, #0 \n"
+ " BNE Dccsw \n"
+ " MCR p15, 0, R11, c7, c6, 2 \n" // DCISW. Invalidate by Set/Way
+ " B cont \n"
+ "Dccsw: CMP R0, #1 \n"
+ " BNE Dccisw \n"
+ " MCR p15, 0, R11, c7, c10, 2 \n" // DCCSW. Clean by Set/Way
+ " B cont \n"
+ "Dccisw: MCR p15, 0, R11, c7, c14, 2 \n" // DCCISW, Clean and Invalidate by Set/Way
+ "cont: SUBS R9, R9, #1 \n" // Decrement the Way number
+ " BGE Loop3 \n"
+ " SUBS R7, R7, #1 \n" // Decrement the Set number
+ " BGE Loop2 \n"
+ "Skip: ADD R10, R10, #2 \n" // increment the cache number
+ " CMP R3, R10 \n"
+ " BGT Loop1 \n"
+
+ "Finished: \n"
+ " DSB \n"
+ " POP {R4-R11} \n"
+ " BX lr \n" );
+}
+
+/** \brief Invalidate the whole D$
+
+ DCISW. Invalidate by Set/Way
+ */
+// from system_Renesas_RZ_A1.c
+__STATIC_INLINE void __v7_inv_dcache_all(void) {
+ __v7_all_cache(0);
+}
+#include "core_ca_mmu.h"
#elif (defined (__GNUC__)) /*------------------ GNU Compiler ---------------------*/
/* GNU gcc specific functions */