[Gumstix-users] outb(value, port) problem in PALO43 Gumstix

[Tony O. <to...@gm...>]

I have a new question that maybe somebody can answer, please.
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BACKGROUND
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I am changing the Linux kernel:
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I change board-overo.c and omap2_mcspi.c (in order to send a string through
SPI between a Gumstix Overo Palo 43
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-with OMAP 3530 in it, acting as a master- to a TI 1278 slave).
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I put the new Linux kernel (i.e.: uImage) on a SD card on the PALO43.
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The PALO 43 boots from a NAND then starts from the SD card my Linux
(modified for SPI).
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The modified Linux crashes, per console display of a log file of boot shown
in kermit.
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By disabling all my changes and enabling them one by one, my Linux compiles
well but crashes when SD runs it,
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because of:
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outb(0, (int *) 0x480021C8); that declares OMAP3530 pins at address 4800
21C8 as SPI pins mcspi1_clk and mcspi1_simo


and:
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outb(0, int*)0x480021CC); that declares mcspi1_somi and mcspi1_cs0

per TI doc.
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I declared SPI pins two years ago, in an environment different than Gumstix.
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(thanks to Charles Ash for answering my previous related question suspecting
rootfs, but my question now evolved)
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QUESTION
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how do I replace outb(value, port) in a Gumstix environment so that PALO43
boots from NAND, starts the Linux in the SD card,
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and the Linux on the SD card doesn't crash?
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Ion A. Beza.
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