/* FreeRTOS V8.2.0rc1 - Copyright (C) 2014 Real Time Engineers Ltd. All rights reserved VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. This file is part of the FreeRTOS distribution. FreeRTOS is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License (version 2) as published by the Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception. >>! NOTE: The modification to the GPL is included to allow you to !<< >>! distribute a combined work that includes FreeRTOS without being !<< >>! obliged to provide the source code for proprietary components !<< >>! outside of the FreeRTOS kernel. !<< FreeRTOS 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. Full license text is available on the following link: http://www.freertos.org/a00114.html 1 tab == 4 spaces! *************************************************************************** * * * Having a problem? Start by reading the FAQ "My application does * * not run, what could be wrong?". Have you defined configASSERT()? * * * * http://www.FreeRTOS.org/FAQHelp.html * * * *************************************************************************** *************************************************************************** * * * FreeRTOS provides completely free yet professionally developed, * * robust, strictly quality controlled, supported, and cross * * platform software that is more than just the market leader, it * * is the industry's de facto standard. * * * * Help yourself get started quickly while simultaneously helping * * to support the FreeRTOS project by purchasing a FreeRTOS * * tutorial book, reference manual, or both: * * http://www.FreeRTOS.org/Documentation * * * *************************************************************************** *************************************************************************** * * * Investing in training allows your team to be as productive as * * possible as early as possible, lowering your overall development * * cost, and enabling you to bring a more robust product to market * * earlier than would otherwise be possible. Richard Barry is both * * the architect and key author of FreeRTOS, and so also the world's * * leading authority on what is the world's most popular real time * * kernel for deeply embedded MCU designs. Obtaining your training * * from Richard ensures your team will gain directly from his in-depth * * product knowledge and years of usage experience. Contact Real Time * * Engineers Ltd to enquire about the FreeRTOS Masterclass, presented * * by Richard Barry: http://www.FreeRTOS.org/contact * * *************************************************************************** *************************************************************************** * * * You are receiving this top quality software for free. Please play * * fair and reciprocate by reporting any suspected issues and * * participating in the community forum: * * http://www.FreeRTOS.org/support * * * * Thank you! * * * *************************************************************************** http://www.FreeRTOS.org - Documentation, books, training, latest versions, license and Real Time Engineers Ltd. contact details. http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, including FreeRTOS+Trace - an indispensable productivity tool, a DOS compatible FAT file system, and our tiny thread aware UDP/IP stack. http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate. Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS. http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS licenses offer ticketed support, indemnification and commercial middleware. http://www.SafeRTOS.com - High Integrity Systems also provide a safety engineered and independently SIL3 certified version for use in safety and mission critical applications that require provable dependability. 1 tab == 4 spaces! */ /* * Purpose: Lowest level routines for all ColdFire processors. * * Notes: * * ulPortSetIPL() and mcf5xxx_wr_cacr() copied with permission from FreeScale * supplied source files. */ .global ulPortSetIPL .global mcf5xxx_wr_cacr .global __cs3_isr_interrupt_80 .global vPortStartFirstTask .text .macro portSAVE_CONTEXT lea.l (-60, %sp), %sp movem.l %d0-%fp, (%sp) move.l pxCurrentTCB, %a0 move.l %sp, (%a0) .endm .macro portRESTORE_CONTEXT move.l pxCurrentTCB, %a0 move.l (%a0), %sp movem.l (%sp), %d0-%fp lea.l %sp@(60), %sp rte .endm /********************************************************************/ /* * This routines changes the IPL to the value passed into the routine. * It also returns the old IPL value back. * Calling convention from C: * old_ipl = asm_set_ipl(new_ipl); * For the Diab Data C compiler, it passes return value thru D0. * Note that only the least significant three bits of the passed * value are used. */ ulPortSetIPL: link A6,#-8 movem.l D6-D7,(SP) move.w SR,D7 /* current sr */ move.l D7,D0 /* prepare return value */ andi.l #0x0700,D0 /* mask out IPL */ lsr.l #8,D0 /* IPL */ move.l 8(A6),D6 /* get argument */ andi.l #0x07,D6 /* least significant three bits */ lsl.l #8,D6 /* move over to make mask */ andi.l #0x0000F8FF,D7 /* zero out current IPL */ or.l D6,D7 /* place new IPL in sr */ move.w D7,SR movem.l (SP),D6-D7 lea 8(SP),SP unlk A6 rts /********************************************************************/ mcf5xxx_wr_cacr: move.l 4(sp),d0 .long 0x4e7b0002 /* movec d0,cacr */ nop rts /********************************************************************/ /* Yield interrupt. */ __cs3_isr_interrupt_80: portSAVE_CONTEXT jsr vPortYieldHandler portRESTORE_CONTEXT /********************************************************************/ vPortStartFirstTask: portRESTORE_CONTEXT .end