Virtual frame buffer and VSYNC

fb on GPU fb on GPU Kernel Vfb on XDR Output request from application mmap /dev/fb Every VSYNC, do; - notify VSYNC to application - DMA and FLIP request FLIP DMA V field VSYNC to application t DMA Timing chart Vfb on XDR DMA FLIP FLIP req FLIP

GPU Kernel vsync Flip done irq FB 0 hvc DMA blocking FLIP req. hvc vsync Flip done FLIP with sync DMA is kicked, if the former FLIP has been done t single frame buffer is used from Xserver,... FB 0

User Kernel vsync Flip done FB 0 DMA vsync Flip done FLIP with sync t stop flipping in the kernel ON IOCTL FSEL WAITFORVSYNC IOCTL blocking FB 1 IOCTL FSEL 1st frame buffer OFF end of user application screen size, num of frame buffers SCREENINFO IOCTL FLIP req. 2nd frame buffer WAITFORVSYNC

Overview of Linux Installation

Linux Area Select “Format utility” menu Game Area Built-in HDD PS3

Download Install Other OS Flash Area Select “Install Other OS” menu 0 Boot flag: 0(= Game OS) Distro-A Web Page Kboot for Distro-A Flash Rom Kboot for Distro-A PS3 Memory card/Optical Disc

address segment =============================================== x | “cell_ext_os_area" | x | version | offset1 | offset2 | (reserved)| +===========+===========+===========+===========+ 0x | ldr format| ldr size | | | | | : (reserved) : | | x | boot flag | (reserved) | x | | | | : (ext params) : | | +=============================================== x | | 2(offset1) : (Other OS area) : : | | : +=============================================== | | offset2 : (boot loader area) : : | | : =============================================== x boot loader image install User changeable *Reserved Area in PS3 System Flash Rom ● Header ● CELL OS Area ● Boot flag could be change by user ● Other OS Area ● Boot Loader Area ● Boot loader image could be installed by user Detail of Format The format could be change. Please refer PS3 website, for up to date information

PS3 Select “Default System” menu and set to “Other OS” Boot flag: 0 -> 1 (Other OS) Other OS Flash Area 1 Kboot for Distro-A User can switch which system to be booted though by PS3 System menu. Flash Rom

Power on boot flag = 1 PS3 Env Load & exec boot loader from boot loader area Initialize Hardware and mount devices Time out or RET User inputs? Exec default kernel Exec user specified kernel N N Y Y Y N in kboot kboot

SPE Programming Environment Overview

PPE Linux Kernel PPE Application SPUFS libspe SPE SPE Application newlib vector math library SIMD math library

System Overview

PPC64 infrastructure Mouse/KBDBluetoothPAD HW Hyper visor HDD/ BD GbE Graphics Mouse/ ＫＢＤ NETWORK Wireless Bluetooth USB audioGbEstorage ALSA ATA virtualization FB VFB disk TCP/IP etc X Video Output Control Video Output Control Linux kernel video output control graphicsaudionetworkstorageUSB function SPUs Audio USB mass SPE support utilslibspe SPU support PS3 support System Bus Platform support PPU SCSI rom

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1st frame buffer 2nd frame buffer offset to 1st fb offset to 2nd fb + 0 (byte) + xres * yres * BPP (byte) xres - 2 * xoff (pixel) yres - 2 * yoff (pixel) xres * BPP (byte) byte to next line yres - 2 * yoff (pixel) mmap address offset