From: Guenther SOMMER <hidden> Date: 2003-03-14 22:42:18
hi!
i'd like to start linux on a dsp-board (where no linux has gone before :)))
it's a dsp-board with some dsp on board an a motorola 860 processor. the
board itself has 32mb sdram and 8 mb flash. the board has a bootloader
integrated, which configures the mpcs and start a simple "boot-aplication".
normal vxworks is used, but it's time to start something useful now :)))
i'd like this bootapplication to start linux, but how can i do this. the
bootloader itself should stay, because it does the initialization.
i didn't find anything like ROLO (a rom-bootloader for linux, but only
for x86). ppcboot is a total overkill, because the board is complete
initalized, i only need something to start the kernel (no config, no
transfer of images, no..., only kick the kernel, which lies mapped in
memory from the flash).
the other problem is, which setting for the "board type" in the
linux-kernel itself should (kernel from ELDK at www.denx.de) be used?
hope you can give me some tips, i'd like to show my boss, that linux
runs everywhere!
greetings, guenther sommer.
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From: Guenther SOMMER <hidden> Date: 2003-03-14 23:12:59
i'd like to start linux on a dsp-board (where no linux has gone before :)))
it's a dsp-board with some dsp on board an a motorola 860 processor. the
board itself has 32mb sdram and 8 mb flash. the board has a bootloader
integrated, which configures the mpcs and start a simple "boot-aplication".
i didn't write it straightforward. i mean it should run on the
control-processor (the mpc860), not on the dsps itself. but i think it
would be cool, if linux lets the "dsp-dolls" dance :)
grettings, guenther sommer.
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From: Magnus Damm <hidden> Date: 2003-03-15 01:10:41
I've actually run Linux on a hardware that might be something like
yours, but it was 3 years ago now. A 2.2-kernel.
The board we used had a 860 and a Texas DSP + some kind of FPGA,
great for telecommunications...
I wrote a small piece of boot software that could be compiled to
be placed in the internal DPRAM by a BDM or be burned into flash.
The boot software then started a zImage from ram or from flash.
I would suggest you to burn a zImage.embedded into the flash.
/ magnus
On Sat, 15 Mar 2003 00:12:59 +0100
Guenther SOMMER [off-list ref] wrote:
quoted
i'd like to start linux on a dsp-board (where no linux has gone before :)))
it's a dsp-board with some dsp on board an a motorola 860 processor. the
board itself has 32mb sdram and 8 mb flash. the board has a bootloader
integrated, which configures the mpcs and start a simple "boot-aplication".
i didn't write it straightforward. i mean it should run on the
control-processor (the mpc860), not on the dsps itself. but i think it
would be cool, if linux lets the "dsp-dolls" dance :)
grettings, guenther sommer.
On Fri, Mar 14, 2003 at 11:42:18PM +0100, Guenther SOMMER wrote:
it's a dsp-board with some dsp on board an a motorola 860 processor. the
board itself has 32mb sdram and 8 mb flash. the board has a bootloader
integrated, which configures the mpcs and start a simple "boot-aplication".
It sounds like you would want the code inside of arch/ppc/boot/, with a
more or less empty 'embed_config' function.
--
Tom Rini
http://gate.crashing.org/~trini/
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