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path: root/src/mainboard/intel/dg43gt/cmos.layout
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2018-05-01nb/intel/x4x: Change memory layout to improve MTRRArthur Heymans
This change also makes sure that the sum the uma regions (TSEG, GSM, GSM) is 4MiB aligned. This is needed to avoid cbmem_top floating between 2 usable ram region, since cbmem_top is aligned 4MiB down to easy MTRR setup for ramstage. At least tianocore requires this and fails to boot without it. Better MTRR are achieved by making the memory 'hole' till 4GiB exactly 2Gib. This code mimics how it is done in nb/intel/gm45 and achieves similar results. TSEG is enabled and set to 8M since this makes it easier to reuse the common smm setup / parallel mp code and makes it possible to cache the ramstage in there like how it's done on newer targets. TESTED on Intel DG43GT. Change-Id: I1b5ea04d9b7d5494a30aa7156d8c17170e77b8ad Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/21634 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2018-01-26mb/*/*/cmos.layout: Fix the values for the console levelArthur Heymans
Fix the values that were off by one. This was discovered when using postcar stage that prints with debuglevel BIOS_NEVER. Change-Id: I73a077950ed0dc735d89c9747a8da0a25f30822d Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/23186 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>
2017-09-23mb/*/*: Remove rtc nvram configurable baud rateArthur Heymans
There have been discussions about removing this since it does not seem to be used much and only creates troubles for boards without defaults, not to mention that it was configurable on many boards that do not even feature uart. It is still possible to configure the baudrate through the Kconfig option. Change-Id: I71698d9b188eeac73670b18b757dff5fcea0df41 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/19682 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2017-08-10mb/intel/dg43gt: Add mainboardArthur Heymans
This mainboard features is an G43 northbridge, ICH10 southbridge and Winbond W83627dhg SuperI/O. This board is impossible to flash internally with vendor bios (BIOS region is WP and other regions like IFD and ME are read only and inaccessible respectively). Due to either ICH10 or board layout it is also impossible to do ISP, which requires desoldering flash chip. To make hacking more easy there is an empty SPI header next to spi flash pads which can be hooked up to a SPI flash. What works: * 2 DDR2 dimms per channel (tested with 1+2G in CH0 and 2+2G in CH1); * SATA with AHCI * Integrated GPU with option rom (extracted from a Gigabyte vendor bios) * VGA (on DVI) with NGI if patched to use DVI gmbus port for output * PCI * Reboot and S3 resume * Descriptor mode with ME disable straps and ME region absent (no working gbe in this configuration though) * USB. What does not work: * GBE (probably requires working ME); * Analog on DVI port out is shaking, which is not the case with vendor BIOS (setting clockgen on smbus 0x69 like vendor fixes it). * Booting with ME enabled (needs raminit patches for that) Not tested: * Sound; * All the rest. Not coreboot related problems: * Flashing this board with vendor bios is a PITA and requires desoldering flash chip; * In situ programming is not possible. TESTED with SeaBIOS and Linux 4.10.8 Change-Id: If27280feb7cbf0a88f19fe6a63b1f6dbcf9b60f4 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/19256 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>