From 211254ed6c5a945be18334aa540de55db885000c Mon Sep 17 00:00:00 2001
From: inmarket <andrewh@inmarket.com.au>
Date: Mon, 6 Oct 2014 17:05:16 +1000
Subject: Add support for FreeRTOS into make system

---
 .../example-FreeRTOS/Drivers/interrupts.c          | 166 ---------------------
 1 file changed, 166 deletions(-)
 delete mode 100644 boards/base/RaspberryPi/example-FreeRTOS/Drivers/interrupts.c

(limited to 'boards/base/RaspberryPi/example-FreeRTOS/Drivers/interrupts.c')

diff --git a/boards/base/RaspberryPi/example-FreeRTOS/Drivers/interrupts.c b/boards/base/RaspberryPi/example-FreeRTOS/Drivers/interrupts.c
deleted file mode 100644
index 9908b7c4..00000000
--- a/boards/base/RaspberryPi/example-FreeRTOS/Drivers/interrupts.c
+++ /dev/null
@@ -1,166 +0,0 @@
-/**
- *	Integrated Interrupt Controller for RaspberryPi.
- *	@author	James Walmsley <james@fullfat-fs.co.uk>
- **/
-
-#include "interrupts.h"
-#include "bcm2835_intc.h"
-
-static INTERRUPT_VECTOR g_VectorTable[BCM2835_INTC_TOTAL_IRQ];
-
-
-typedef struct {
-	unsigned long	IRQBasic;	// Pending 0
-	unsigned long	Pending1;
-	unsigned long	Pending2;
-	unsigned long	FIQCtrl;
-	unsigned long	Enable1;
-	unsigned long	Enable2;
-	unsigned long	EnableBasic;
-	unsigned long	Disable1;
-	unsigned long	Disable2;
-	unsigned long	DisableBasic;
-} BCM2835_INTC_REGS;
-
-static volatile BCM2835_INTC_REGS * const pRegs = (BCM2835_INTC_REGS *) (BCM2835_BASE_INTC);
-
-/**
- *	Enables all IRQ's in the CPU's CPSR register.
- **/
-static void irqEnable() {
-	__asm volatile("mrs 	r0,cpsr");		// Read in the cpsr register.
-	__asm volatile("bic		r0,r0,#0x80");	// Clear bit 8, (0x80) -- Causes IRQs to be enabled.
-	__asm volatile("msr		cpsr_c, r0");	// Write it back to the CPSR register
-}
-
-static void irqDisable() {
-	__asm volatile("mrs		r0,cpsr");		// Read in the cpsr register.
-	__asm volatile("orr		r0,r0,#0x80");	// Set bit 8, (0x80) -- Causes IRQs to be disabled.
-	__asm volatile("msr		cpsr_c, r0");	// Write it back to the CPSR register.
-
-}
-
-#define clz(a) \
- ({ unsigned long __value, __arg = (a); \
-     asm ("clz\t%0, %1": "=r" (__value): "r" (__arg)); \
-     __value; })
-
-/**
- *	This is the global IRQ handler on this platform!
- *	It is based on the assembler code found in the Broadcom datasheet.
- *
- **/
-void irqHandler() {
-	register unsigned long ulMaskedStatus;
-	register unsigned long irqNumber;
-
-	ulMaskedStatus = pRegs->IRQBasic;
-
-	/* Bits 7 through 0 in IRQBasic represent interrupts 64-71 */
-	if (ulMaskedStatus & 0xFF) {
-		irqNumber=64 + 31;
-	}
-
-	/* Bit 8 in IRQBasic indicates interrupts in Pending1 (interrupts 31-0) */
-	else if(ulMaskedStatus & 0x100) {
-		ulMaskedStatus = pRegs->Pending1;
-		irqNumber = 0 + 31;
-	}
-
-	/* Bit 9 in IRQBasic indicates interrupts in Pending2 (interrupts 63-32) */
-	else if(ulMaskedStatus & 0x200) {
-		ulMaskedStatus = pRegs->Pending2;
-		irqNumber = 32 + 31;
-	}
-
-	else {
-		// No interrupt avaialbe, so just return.
-		return;
-	}
-
-	/* Keep only least significant bit, in case multiple interrupts have occured */
-	ulMaskedStatus&=-ulMaskedStatus;
-	/* Some magic to determine number of interrupt to serve */
-	irqNumber=irqNumber-clz(ulMaskedStatus);
-	/* Call interrupt handler */
-	g_VectorTable[irqNumber].pfnHandler(irqNumber, g_VectorTable[irqNumber].pParam);
-}
-
-
-static void stubHandler(int nIRQ, void *pParam) {
-	/**
-	 *	Actually if we get here, we should probably disable the IRQ,
-	 *	otherwise we could lock up this system, as there is nothing to
-	 *	ackknowledge the interrupt.
-	 **/
-}
-
-int InitInterruptController() {
-	int i;
-	for(i = 0; i < BCM2835_INTC_TOTAL_IRQ; i++) {
-		g_VectorTable[i].pfnHandler 	= stubHandler;
-		g_VectorTable[i].pParam			= (void *) 0;
-	}
-	return 0;
-}
-
-
-
-int RegisterInterrupt(int nIRQ, FN_INTERRUPT_HANDLER pfnHandler, void *pParam) {
-	if(nIRQ<0 || nIRQ>71)
-		return -1;
-
-	irqDisable();
-	{
-		g_VectorTable[nIRQ].pfnHandler = pfnHandler;
-		g_VectorTable[nIRQ].pParam		= pParam;
-	}
-	irqEnable();
-	return 0;
-}
-
-int EnableInterrupt(int nIRQ) {
-	/* Datasheet says "All other bits are unaffected", and I'm counting on that. */
-	unsigned int mask=1<<(nIRQ%32);
-
-	if(nIRQ >=0 && nIRQ <=31) {
-		pRegs->Enable1 = mask;
-	} else
-	if(nIRQ >=32 && nIRQ <=63){
-		pRegs->Enable2 = mask;
-	} else
-	if(nIRQ >= 64 && nIRQ <= 71) {	// Basic IRQ enables
-		pRegs->EnableBasic = mask;
-	} else
-		return -1;
-
-	return 0;
-}
-
-int DisableInterrupt(int nIRQ) {
-	/* Datasheet says "All other bits are unaffected", and I'm counting on that. */
-	unsigned int mask=1<<(nIRQ%32);
-
-	if(nIRQ >=0 && nIRQ <=31) {
-		pRegs->Disable1 = mask;
-	} else
-	if(nIRQ >=32 && nIRQ <=63){
-		pRegs->Disable2 = mask;
-	} else
-	if(nIRQ >= 64 && nIRQ <= 71) {
-		pRegs->DisableBasic = mask;
-	} else
-		return -1;
-
-	return 0;
-}
-
-int EnableInterrupts() {
-	irqEnable();
-	return 0;
-}
-
-int DisableInterrupts() {
-	irqDisable();
-	return 0;
-}
-- 
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