PowerPC介绍.pptVIP

CONFIDENTIAL PowerPC Introduction Agenda PowerPC History PowerPC ARCH PowerPC for VxWorks How to add a new PowerPC variant - PPC476 - PPC465 PowerPC VxWorks Overview HIG(BSPs, drivers, architecture) Architecture(PowerPC, ARM, MIPS, X86,COLDFIRE, SPARC…) PowerPC History POWER: Power Optimization With Enhanced RISC - POWER is a RISC instruction set architecture designed by IBM - 1990年被 RS 或 RISC System/6000 UNIX 工作站采用 - POWER1 … POWER7… PowerPC（PC: performance computing) - based on IBMs earlier POWER architecture - created by the 1991 Apple–IBM–Motorola alliance, known as AIM. 最初目的，用在PC(苹果机比较成功 1994-2006)反击Wintel。 第一个PowerPC芯片601 PowerPC History – cont AIM alliance break - 2004 Motorola剥离芯片业务成立Freescale - IBM卖掉Embedded processor给AMCC - 2005 Apple转向Intel processor New P - open standards 被IEEE统一管理 - 成员包括IBM Freescale AMCC - IBM 主做POWER,Game consoles - Freescale/AMCC主做Embedded processor - POWER Architecture: PowerPC,Cells,POWER - unified ISA specification PowerPC History – cont BookE - PowerPC for Embedded Environment - 2000 年开始，摩托罗拉和 IBM 的 PowerPC 芯片都开始遵循 Book E 规范 BookE vs AIM - Book E defines more flexible interrupt and memory management models. - Segment and block address translation (BAT) registers are gone - Book E supports the use of auxiliary processing units - Registers different - Instructions set different - Interrupts exceptions different PowerPC Market PowerPC - 网络和存储设备 - 从视频游戏终端、多媒体娱乐系统，到数字助手和蜂窝电话，再到基站和 PBX 开关 - 桌面系统中也会有 PowerPC POWER - IBM 的很多服务器、工作站和超级计算机的主要处理器 Cell - 游戏控制器 PowerPC History – evolution PowerPC ARCH – Levels Book I User instruction set architecture(UISA) 定义通用于所有 PowerPC 实现的用户指令和寄存器的基本集合，非特权指令 Book II Virtual Environment Architecture (VEA) 定义附加的用户级功能，如高速缓存管理、原子操作和用户级计时器支持 Book III Operating Environment Architecture (OEA) 定义操作系统级需要和使用的操作 PowerPC ARCH – Registers 32 general purpose registers 32 floating-point registers SPRs - LRCTRCR … MSR