Porting Linux on an ARM board

220 Pages·2015·1.67 MB·English

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Porting Linux on an
ARM board

Bootlin
[email protected]
©Copyright2004-2018,Bootlin. embedded Linux and kernel engineering
CreativeCommonsBY-SA3.0license.
Corrections,suggestions,contributionsandtranslationsarewelcome!
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Alexandre Belloni
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Embedded Linux engineer at Bootlin
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Embedded Linux expertise
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Development, consulting and training
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Strong open-source focus
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Open-source contributor

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Maintainer for the Linux kernel RTC
subsystem
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Co-Maintainer of kernel support for Atmel
ARM processors
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Contributing to kernel support for Marvell
ARM (Berlin) processors embedded Linux and kernel engineering
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Bootlin Mission
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Bootlin at a glance
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Engineering company created in 2004
(not a training company!)
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Locations: Orange, Toulouse, Lyon (France)
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Serving customers all around the world
See http://bootlin.com/company/customers/
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Head count: 9
Only Free Software enthusiasts!
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Focus: Embedded Linux, Linux kernel, Android Free Software / Open Source for
embedded and real-time systems.
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Activities: development, training, consulting, technical support.
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Added value: get the best of the user and development community and the
resources it offers.
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Bootlin on-line resources
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All our training materials:
http://bootlin.com/docs/
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Technical blog:
http://bootlin.com/blog/
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News and discussions (Google +):
https://plus.google.com/+Bootlin
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News and discussions (LinkedIn):
https://www.linkedin.com/groups/4501089
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Quick news (Twitter):
http://twitter.com/bootlincom
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Linux Cross Reference - browse Linux kernel sources on-line:
http://lxr.bootlin.com
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Captronic
Course content

Bootlin
[email protected]
©Copyright2004-2018,Bootlin. embedded Linux and kernel engineering
CreativeCommonsBY-SA3.0license.
Corrections,suggestions,contributionsandtranslationsarewelcome!
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Porting linux
Porting Linux includes a number of steps, starting even before software is involved:
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SoC selection
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SoM, SBC selection or board conception
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Bootloader selection
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Bootloader port
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Linux kernel version selection
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Linux port
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Root filesystem integration
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Captronic
ARM Ecosystem

Bootlin
[email protected]
©Copyright2004-2018,Bootlin. embedded Linux and kernel engineering
CreativeCommonsBY-SA3.0license.
Corrections,suggestions,contributionsandtranslationsarewelcome!
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ARM Ecosystem
ARM SoCs
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ARM platforms
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ARM (the company) designs CPU cores: instruction set, MMU, caches, etc.
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They don’t sell any hardware
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Silicon vendors buy the CPU core design from ARM, and around it add a
number of peripherals, either designed internally or bought from third parties
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Texas Instruments, Atmel, Marvell, Freescale, Qualcomm, Nvidia, etc.
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They sell System-on-chip or SoCs
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System makers design an actual board, with one or several processors, and a
number of on-board peripherals
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