Sorry for joining in late. I wrote a utility a while ago that dumped the GPIO registers of an ICH7. Maybe your registers look pretty similar.
My output is something like: Intel Southbridge: 8086:27b8 GPIOBASE = 0x0480 gpiobase+0x0000: 0x1f1ff7c0 gpiobase+0x0004: 0xe0e8efc3 gpiobase+0x0008: 0x00000000 gpiobase+0x000c: 0xebffeeff gpiobase+0x0010: 0x00000000 gpiobase+0x0014: 0x00000000 gpiobase+0x0018: 0x00000000 gpiobase+0x001c: 0x00000000 gpiobase+0x0020: 0x00000000 gpiobase+0x0024: 0x00000000 gpiobase+0x0028: 0x00000000 gpiobase+0x002c: 0x00002180 gpiobase+0x0030: 0x000000ff gpiobase+0x0034: 0x00000030 gpiobase+0x0038: 0x00010035 gpiobase+0x003c: 0x00000000 * [EMAIL PROTECTED] <[EMAIL PROTECTED]> [080219 10:59]: > Quoting Peter Stuge <[EMAIL PROTECTED]>: > > > On Mon, Feb 18, 2008 at 07:45:55PM -0500, [EMAIL PROTECTED] wrote: > >> > Once you have the base address, you can read the GPIO control > >> > registers from /dev/port, with the seek equal to the base address. > >> > >> How?? This is the part I am looking for, this would be the golden > >> ticket:-) > > > > Oh! This can be fairly simple. > > > > dd if=/dev/ioport bs=1 skip=$[0xbasehere] count=asmanyasyouwant | xxd > > > > > OK, so lets clarify? > > GPIOBASE?GPIO Base Address (LPC I/F?D31:F0) > 31:16 Reserved > 15:6 Base Address ? R/W. Provides the 64 bytes of I/O space for GPIO. > 5:1 Reserved > 0 Resource Indicator ? RO. Hardwired to 1; indicates I/O space. > > 1. My value is 0x00000501. So if only bits 15:6 are the base address > this would make my base address 0x14 correct? This value would become > "0xbasehere"? > > 2. Would I put 64 in "asmanyasyouwant" to dump the whole 64 bytes of > I/O space? > > 3. What is the pipe xxd for? > > Thanks again for the help:-) > > Thanks - Joe > > -- > coreboot mailing list > [email protected] > http://www.coreboot.org/mailman/listinfo/coreboot > -- coresystems GmbH • Brahmsstr. 16 • D-79104 Freiburg i. Br. Tel.: +49 761 7668825 • Fax: +49 761 7664613 Email: [EMAIL PROTECTED] • http://www.coresystems.de/ Registergericht: Amtsgericht Freiburg • HRB 7656 Geschäftsführer: Stefan Reinauer • Ust-IdNr.: DE245674866
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