From 4dd0f906c6ee620d16f2e87e56344a2cb0bf0a46 Mon Sep 17 00:00:00 2001 From: Vadim Girlin Date: Sat, 24 Aug 2013 12:18:17 +0000 Subject: IT87: Add ability to select between chips on GIGABYTE DualBIOS boards Thanks to Vadim Girlin for finding out how to do that. This is known to work on GA-MA770-UD3, GA-B75M-D3V, GA-B75N and GA-H61M-S1 (only M_BIOS is populated). Corresponding to flashrom svn r1720. Signed-off-by: Vadim Girlin Signed-off-by: Damien Zammit Signed-off-by: Stefan Tauner Tested-by: Damien Zammit Tested-by: Anton Kochkov Acked-by: Stefan Tauner --- flashrom.8 | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'flashrom.8') diff --git a/flashrom.8 b/flashrom.8 index dccfd1a..c52542a 100644 --- a/flashrom.8 +++ b/flashrom.8 @@ -315,6 +315,19 @@ do not match, it will refuse to write the image unless you specify .TP .B ITE IT87 Super I/O .sp +If your mainboard is manufactured by GIGABYTE and supports DualBIOS it is very likely that it uses an +ITE IT87 series Super I/O to switch between the two flash chips. Only one of them can be accessed at a time +and you can manually select which one to use with the +.sp +.B " flashrom \-p internal:dualbiosindex=chip" +.sp +syntax where +.B chip +is the index of the chip to use (0 = main, 1 = backup). You can check which one is currently selected by +leaving out the +.B chip +parameter. +.sp If your mainboard uses an ITE IT87 series Super I/O for LPC<->SPI flash bus translation, flashrom should autodetect that configuration. If you want to set the I/O base port of the IT87 series SPI controller manually instead of -- cgit v1.1