Transcription of BCM2835 ARM Peripherals - Raspberry Pi
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BCM2835 ARM Peripherals - Raspberry Pi
2012 Broadcom Corporation. All rights reserved Broadcom Europe Ltd. 406 Science Park Milton Road Cambridge CB4 0WW BCM2835 ARM Peripherals 06 February 2012 Broadcom Europe Ltd. 406 Science Park Milton Road Cambridge CB4 0WW Page ii 2012 Broadcom Corporation. All rights reserved Table of Contents 1 Introduction 4 Overview 4 Address map 4 Diagrammatic overview 4 ARM virtual addresses (standard Linux kernel only) 6 ARM physical addresses 6 Bus addresses 6 peripheral access precautions for correct memory ordering 7 2 Auxiliaries: UART1 & SPI1, SPI2 8 Overview 8 AUX registers 9 Mini UART 10 Mini UART implementation details.
1GB/3GB split between kernel and user-space memory. The split between ARM and GPU memory is selected by installing one of the supplied start*.elf files as start.elf in the FAT32 boot partition of the SD card. The minimum amount of memory which can be given to the GPU is 32MB, but that will restrict the multimedia ...
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