diff options
Diffstat (limited to 'os/rt/ports/e200/chcore.h')
| -rw-r--r-- | os/rt/ports/e200/chcore.h | 599 |
1 files changed, 0 insertions, 599 deletions
diff --git a/os/rt/ports/e200/chcore.h b/os/rt/ports/e200/chcore.h deleted file mode 100644 index ffac96bea..000000000 --- a/os/rt/ports/e200/chcore.h +++ /dev/null @@ -1,599 +0,0 @@ -/*
- ChibiOS - Copyright (C) 2006..2015 Giovanni Di Sirio.
-
- This file is part of ChibiOS.
-
- ChibiOS is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- ChibiOS is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-/**
- * @file PPC/chcore.h
- * @brief Power e200 port macros and structures.
- *
- * @addtogroup PPC_CORE
- * @{
- */
-
-#ifndef _CHCORE_H_
-#define _CHCORE_H_
-
-#include "intc.h"
-
-/*===========================================================================*/
-/* Module constants. */
-/*===========================================================================*/
-
-/**
- * @name Architecture and Compiler
- * @{
- */
-/**
- * @brief Macro defining an PPC architecture.
- */
-#define PORT_ARCHITECTURE_PPC
-
-/**
- * @brief Macro defining the specific PPC architecture.
- */
-#define PORT_ARCHITECTURE_PPC_E200
-
-/**
- * @brief Name of the implemented architecture.
- */
-#define PORT_ARCHITECTURE_NAME "Power Architecture"
-
-/**
- * @brief Compiler name and version.
- */
-#if defined(__GNUC__) || defined(__DOXYGEN__)
-#define PORT_COMPILER_NAME "GCC " __VERSION__
-
-#elif defined(__MWERKS__)
-#define PORT_COMPILER_NAME "CW"
-
-#else
-#error "unsupported compiler"
-#endif
-
-/**
- * @brief This port supports a realtime counter.
- */
-#define PORT_SUPPORTS_RT FALSE
-/** @} */
-
-/**
- * @name E200 core variants
- * @{
- */
-#define PPC_VARIANT_e200z0 200
-#define PPC_VARIANT_e200z2 202
-#define PPC_VARIANT_e200z3 203
-#define PPC_VARIANT_e200z4 204
-/** @} */
-
-/* Inclusion of the PPC implementation specific parameters.*/
-#include "ppcparams.h"
-#include "vectors.h"
-
-/*===========================================================================*/
-/* Module pre-compile time settings. */
-/*===========================================================================*/
-
-/**
- * @brief Stack size for the system idle thread.
- * @details This size depends on the idle thread implementation, usually
- * the idle thread should take no more space than those reserved
- * by @p PORT_INT_REQUIRED_STACK.
- * @note In this port it is set to 32 because the idle thread does have
- * a stack frame when compiling without optimizations. You may
- * reduce this value to zero when compiling with optimizations.
- */
-#if !defined(PORT_IDLE_THREAD_STACK_SIZE) || defined(__DOXYGEN__)
-#define PORT_IDLE_THREAD_STACK_SIZE 32
-#endif
-
-/**
- * @brief Per-thread stack overhead for interrupts servicing.
- * @details This constant is used in the calculation of the correct working
- * area size.
- * @note In this port this value is conservatively is set to 256 because
- * there is no separate interrupts stack (yet).
- */
-#if !defined(PORT_INT_REQUIRED_STACK) || defined(__DOXYGEN__)
-#define PORT_INT_REQUIRED_STACK 256
-#endif
-
-/**
- * @brief Enables an alternative timer implementation.
- * @details Usually the port uses a timer interface defined in the file
- * @p chcore_timer.h, if this option is enabled then the file
- * @p chcore_timer_alt.h is included instead.
- */
-#if !defined(PORT_USE_ALT_TIMER) || defined(__DOXYGEN__)
-#define PORT_USE_ALT_TIMER FALSE
-#endif
-
-/**
- * @brief Use VLE instruction set.
- * @note This parameter is usually set in the Makefile.
- */
-#if !defined(PPC_USE_VLE) || defined(__DOXYGEN__)
-#define PPC_USE_VLE TRUE
-#endif
-
-/**
- * @brief Enables the use of the @p WFI instruction.
- */
-#if !defined(PPC_ENABLE_WFI_IDLE) || defined(__DOXYGEN__)
-#define PPC_ENABLE_WFI_IDLE FALSE
-#endif
-
-/*===========================================================================*/
-/* Derived constants and error checks. */
-/*===========================================================================*/
-
-#if PPC_USE_VLE && !PPC_SUPPORTS_VLE
-#error "the selected MCU does not support VLE instructions set"
-#endif
-
-#if !PPC_USE_VLE && !PPC_SUPPORTS_BOOKE
-#error "the selected MCU does not support BookE instructions set"
-#endif
-
-/**
- * @brief Name of the architecture variant.
- */
-#if (PPC_VARIANT == PPC_VARIANT_e200z0) || defined(__DOXYGEN__)
-#define PORT_CORE_VARIANT_NAME "e200z0"
-#elif PPC_VARIANT == PPC_VARIANT_e200z2
-#define PORT_CORE_VARIANT_NAME "e200z2"
-#elif PPC_VARIANT == PPC_VARIANT_e200z3
-#define PORT_CORE_VARIANT_NAME "e200z3"
-#elif PPC_VARIANT == PPC_VARIANT_e200z4
-#define PORT_CORE_VARIANT_NAME "e200z4"
-#else
-#error "unknown or unsupported PowerPC variant specified"
-#endif
-
-/**
- * @brief Port-specific information string.
- */
-#if PPC_USE_VLE
-#define PORT_INFO "VLE mode"
-#else
-#define PORT_INFO "Book-E mode"
-#endif
-
-/*===========================================================================*/
-/* Module data structures and types. */
-/*===========================================================================*/
-
-/* The following code is not processed when the file is included from an
- asm module.*/
-#if !defined(_FROM_ASM_)
-
-/**
- * @brief Type of stack and memory alignment enforcement.
- * @note In this architecture the stack alignment is enforced to 64 bits.
- */
-typedef uint64_t stkalign_t;
-
-/**
- * @brief Generic PPC register.
- */
-typedef void *regppc_t;
-
-/**
- * @brief Mandatory part of a stack frame.
- */
-struct port_eabi_frame {
- uint32_t slink; /**< Stack back link. */
- uint32_t shole; /**< Stack hole for LR storage. */
-};
-
-/**
- * @brief Interrupt saved context.
- * @details This structure represents the stack frame saved during a
- * preemption-capable interrupt handler.
- * @note R2 and R13 are not saved because those are assumed to be immutable
- * during the system life cycle.
- */
-struct port_extctx {
- struct port_eabi_frame frame;
- /* Start of the e_stmvsrrw frame (offset 8).*/
- regppc_t pc;
- regppc_t msr;
- /* Start of the e_stmvsprw frame (offset 16).*/
- regppc_t cr;
- regppc_t lr;
- regppc_t ctr;
- regppc_t xer;
- /* Start of the e_stmvgprw frame (offset 32).*/
- regppc_t r0;
- regppc_t r3;
- regppc_t r4;
- regppc_t r5;
- regppc_t r6;
- regppc_t r7;
- regppc_t r8;
- regppc_t r9;
- regppc_t r10;
- regppc_t r11;
- regppc_t r12;
- regppc_t padding;
- };
-
-/**
- * @brief System saved context.
- * @details This structure represents the inner stack frame during a context
- * switching.
- * @note R2 and R13 are not saved because those are assumed to be immutable
- * during the system life cycle.
- * @note LR is stored in the caller context so it is not present in this
- * structure.
- */
-struct port_intctx {
- regppc_t cr; /* Part of it is not volatile... */
- regppc_t r14;
- regppc_t r15;
- regppc_t r16;
- regppc_t r17;
- regppc_t r18;
- regppc_t r19;
- regppc_t r20;
- regppc_t r21;
- regppc_t r22;
- regppc_t r23;
- regppc_t r24;
- regppc_t r25;
- regppc_t r26;
- regppc_t r27;
- regppc_t r28;
- regppc_t r29;
- regppc_t r30;
- regppc_t r31;
- regppc_t padding;
-};
-
-/**
- * @brief Platform dependent part of the @p thread_t structure.
- * @details This structure usually contains just the saved stack pointer
- * defined as a pointer to a @p port_intctx structure.
- */
-struct context {
- struct port_intctx *sp;
-};
-
-#endif /* !defined(_FROM_ASM_) */
-
-/*===========================================================================*/
-/* Module macros. */
-/*===========================================================================*/
-
-/**
- * @brief Platform dependent part of the @p chThdCreateI() API.
- * @details This code usually setup the context switching frame represented
- * by an @p port_intctx structure.
- */
-#define PORT_SETUP_CONTEXT(tp, workspace, wsize, pf, arg) { \
- uint8_t *sp = (uint8_t *)(workspace) + \
- (wsize) - \
- sizeof(struct port_eabi_frame); \
- ((struct port_eabi_frame *)sp)->slink = 0; \
- ((struct port_eabi_frame *)sp)->shole = (uint32_t)_port_thread_start; \
- (tp)->p_ctx.sp = (struct port_intctx *)(sp - sizeof(struct port_intctx)); \
- (tp)->p_ctx.sp->r31 = (regppc_t)(arg); \
- (tp)->p_ctx.sp->r30 = (regppc_t)(pf); \
-}
-
-/**
- * @brief Computes the thread working area global size.
- * @note There is no need to perform alignments in this macro.
- */
-#define PORT_WA_SIZE(n) (sizeof(struct port_intctx) + \
- sizeof(struct port_extctx) + \
- ((size_t)(n)) + ((size_t)(PORT_INT_REQUIRED_STACK)))
-
-/**
- * @brief IRQ prologue code.
- * @details This macro must be inserted at the start of all IRQ handlers
- * enabled to invoke system APIs.
- */
-#define PORT_IRQ_PROLOGUE()
-
-/**
- * @brief IRQ epilogue code.
- * @details This macro must be inserted at the end of all IRQ handlers
- * enabled to invoke system APIs.
- */
-#define PORT_IRQ_EPILOGUE()
-
-/**
- * @brief IRQ handler function declaration.
- * @note @p id can be a function name or a vector number depending on the
- * port implementation.
- */
-#define PORT_IRQ_HANDLER(id) void id(void)
-
-/**
- * @brief Fast IRQ handler function declaration.
- * @note @p id can be a function name or a vector number depending on the
- * port implementation.
- */
-#define PORT_FAST_IRQ_HANDLER(id) void id(void)
-
-/**
- * @brief Priority level verification macro.
- */
-#define PORT_IRQ_IS_VALID_PRIORITY(n) \
- (((n) >= 0U) && ((n) < INTC_PRIORITY_LEVELS))
-
-/**
- * @brief Priority level verification macro.
- */
-#define PORT_IRQ_IS_VALID_KERNEL_PRIORITY(n) \
- (((n) >= 0U) && ((n) < INTC_PRIORITY_LEVELS))
-
-/**
- * @brief Performs a context switch between two threads.
- * @details This is the most critical code in any port, this function
- * is responsible for the context switch between 2 threads.
- * @note The implementation of this code affects <b>directly</b> the context
- * switch performance so optimize here as much as you can.
- *
- * @param[in] ntp the thread to be switched in
- * @param[in] otp the thread to be switched out
- */
-#if !CH_DBG_ENABLE_STACK_CHECK || defined(__DOXYGEN__)
-#define port_switch(ntp, otp) _port_switch(ntp, otp)
-#else
-#define port_switch(ntp, otp) { \
- register struct port_intctx *sp asm ("%r1"); \
- if ((stkalign_t *)(sp - 1) < otp->p_stklimit) \
- chSysHalt("stack overflow"); \
- _port_switch(ntp, otp); \
-}
-#endif
-
-/**
- * @brief Writes to a special register.
- *
- * @param[in] spr special register number
- * @param[in] val value to be written, must be an automatic variable
- */
-#define port_write_spr(spr, val) \
- asm volatile ("mtspr %[p0], %[p1]" : : [p0] "n" (spr), [p1] "r" (val))
-
-/**
- * @brief Writes to a special register.
- *
- * @param[in] spr special register number
- * @param[in] val returned value, must be an automatic variable
- */
-#define port_read_spr(spr, val) \
- asm volatile ("mfspr %[p0], %[p1]" : [p0] "=r" (val) : [p1] "n" (spr))
-
-/*===========================================================================*/
-/* External declarations. */
-/*===========================================================================*/
-
-/* The following code is not processed when the file is included from an
- asm module.*/
-#if !defined(_FROM_ASM_)
-
-#ifdef __cplusplus
-extern "C" {
-#endif
- void _port_switch(thread_t *ntp, thread_t *otp);
- void _port_thread_start(void);
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* !defined(_FROM_ASM_) */
-
-/*===========================================================================*/
-/* Module inline functions. */
-/*===========================================================================*/
-
-/* The following code is not processed when the file is included from an
- asm module.*/
-#if !defined(_FROM_ASM_)
-
-/**
- * @brief Kernel port layer initialization.
- * @details IVOR4 and IVOR10 initialization.
- */
-static inline void port_init(void) {
- uint32_t n;
- unsigned i;
-
- /* Initializing the SPRG0 register to zero, it is required for interrupts
- handling.*/
- n = 0;
- port_write_spr(272, n);
-
-#if PPC_SUPPORTS_IVORS
- {
- /* The CPU supports IVOR registers, the kernel requires IVOR4 and IVOR10
- and the initialization is performed here.*/
- extern void _IVOR4(void);
- port_write_spr(404, _IVOR4);
-
-#if PPC_SUPPORTS_DECREMENTER
- extern void _IVOR10(void);
- port_write_spr(410, _IVOR10);
-#endif
- }
-#endif
-
- /* INTC initialization, software vector mode, 4 bytes vectors, starting
- at priority 0.*/
- INTC_BCR = 0;
- for (i = 0; i < PPC_CORE_NUMBER; i++) {
- INTC_CPR(i) = 0;
- INTC_IACKR(i) = (uint32_t)_vectors;
- }
-}
-
-/**
- * @brief Returns a word encoding the current interrupts status.
- *
- * @return The interrupts status.
- */
-static inline syssts_t port_get_irq_status(void) {
- uint32_t sts;
-
- asm volatile ("mfmsr %[p0]" : [p0] "=r" (sts) :);
- return sts;
-}
-
-/**
- * @brief Checks the interrupt status.
- *
- * @param[in] sts the interrupt status word
- *
- * @return The interrupt status.
- * @retvel false the word specified a disabled interrupts status.
- * @retvel true the word specified an enabled interrupts status.
- */
-static inline bool port_irq_enabled(syssts_t sts) {
-
- return (bool)((sts & (1 << 15)) != 0);
-}
-
-/**
- * @brief Determines the current execution context.
- *
- * @return The execution context.
- * @retval false not running in ISR mode.
- * @retval true running in ISR mode.
- */
-static inline bool port_is_isr_context(void) {
- uint32_t sprg0;
-
- /* The SPRG0 register is increased before entering interrupt handlers and
- decreased at the end.*/
- port_read_spr(272, sprg0);
- return (bool)(sprg0 > 0);
-}
-
-/**
- * @brief Kernel-lock action.
- * @note Implemented as global interrupt disable.
- */
-static inline void port_lock(void) {
-
- asm volatile ("wrteei 0" : : : "memory");
-}
-
-/**
- * @brief Kernel-unlock action.
- * @note Implemented as global interrupt enable.
- */
-static inline void port_unlock(void) {
-
- asm volatile("wrteei 1" : : : "memory");
-}
-
-/**
- * @brief Kernel-lock action from an interrupt handler.
- * @note Implementation not needed.
- */
-static inline void port_lock_from_isr(void) {
-
-}
-
-/**
- * @brief Kernel-unlock action from an interrupt handler.
- * @note Implementation not needed.
- */
-static inline void port_unlock_from_isr(void) {
-
-}
-
-/**
- * @brief Disables all the interrupt sources.
- * @note Implemented as global interrupt disable.
- */
-static inline void port_disable(void) {
-
- asm volatile ("wrteei 0" : : : "memory");
-}
-
-/**
- * @brief Disables the interrupt sources below kernel-level priority.
- * @note Same as @p port_disable() in this port, there is no difference
- * between the two states.
- */
-static inline void port_suspend(void) {
-
- asm volatile ("wrteei 0" : : : "memory");
-}
-
-/**
- * @brief Enables all the interrupt sources.
- * @note Implemented as global interrupt enable.
- */
-static inline void port_enable(void) {
-
- asm volatile ("wrteei 1" : : : "memory");
-}
-
-/**
- * @brief Enters an architecture-dependent IRQ-waiting mode.
- * @details The function is meant to return when an interrupt becomes pending.
- * The simplest implementation is an empty function or macro but this
- * would not take advantage of architecture-specific power saving
- * modes.
- * @note Implemented as an inlined @p wait instruction.
- */
-static inline void port_wait_for_interrupt(void) {
-
-#if PPC_ENABLE_WFI_IDLE
- asm volatile ("wait" : : : "memory");
-#endif
-}
-
-/**
- * @brief Returns the current value of the realtime counter.
- *
- * @return The realtime counter value.
- */
-static inline rtcnt_t port_rt_get_counter_value(void) {
-
- return 0;
-}
-
-#endif /* !defined(_FROM_ASM_) */
-
-/*===========================================================================*/
-/* Module late inclusions. */
-/*===========================================================================*/
-
-#if !defined(_FROM_ASM_)
-
-#if CH_CFG_ST_TIMEDELTA > 0
-#if !PORT_USE_ALT_TIMER
-#include "chcore_timer.h"
-#else /* PORT_USE_ALT_TIMER */
-#include "chcore_timer_alt.h"
-#endif /* PORT_USE_ALT_TIMER */
-#endif /* CH_CFG_ST_TIMEDELTA > 0 */
-
-#endif /* !defined(_FROM_ASM_) */
-
-#endif /* _CHCORE_H_ */
-
-/** @} */
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