CODEWITHSUNDEEP
embeddedembedded-linuxuclinux
tamil_innov
tamil_innov

Reputation: 223

how to port uclinux linux to any microcontroller

I have stellaris LM4f232 evaluation borad. I have ported free rtos , sysbios to stellaris lm4f232 board and successfully developed an gps tracking application . But I always wanted to port uc linux for my board . my question are

i) is there any material to port uclinux to any controller

ii)what are necessary knowledge I required to do the same

I have googled a lot . I did n't get the right information, but I have seen posts that its difficult ,but I cant able to realise the same .any help????

iii) what is the road map to achieve it , what are the knowledge I should need to achieve this

Upvotes: 1

Views: 1799

Answers (3)

G.ONE
G.ONE

Reputation: 537

adding to @Clifford , you can use u-boot (bootloader) ,already configured for many boards ,if your board is not on list you can edit it.,

Upvotes: 0

Clifford
Clifford

Reputation: 93556

Linux, even uCLinux requires considerable memory resources; you'd want to start with at least 2Mb for the boot device and 16Mb of RAM (although a minimal system can be booted in as little as 4Mb). On a microcontroller, this means that you must have external memory.

Another issue is that Cortex-M devices are optimised to run code from on-chip Flash memory, having separate buses for ROM and RAM so that data and instructions can be fetched simultaneously. uClinux must run from external RAM, which has a detrimental effect on the performance, and you will be unlikely to achieve the 1.25MIPS per MHz figure the CM4 is otherwise capable of. It is possible to arrange for time critical code to be placed in on-chip flash is necessary, but it is of course a limited resource.

Some good advice on the issues of deploying Linux on a Cortex-M device can be found here

Upvotes: 3

evilruff
evilruff

Reputation: 4085

I would suggest to have a look on buildroot which as far as I know can be build for this board.

Upvotes: 0

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