From 58afca4a1a09f6bb4c28de460791984002408cdc Mon Sep 17 00:00:00 2001 From: Arthur Heymans Date: Fri, 30 Sep 2016 21:03:23 +0200 Subject: nb/gm45: allow use of 352M preallocated ram for igd MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The datasheets on gm45: "Mobile Intel® 4 Series Express Chipset Family" mention the possibility of having 352M ram preallocated for the integrated graphic device. This only worked fine if the amount of ram in the system was 3GB or less. When 4G or more is installed, memory is remapped to create a 1GB large pci mmio hole which is not enough and creates conflicts when 352M vram is used. This patch increases the pci mmio hole size on Lenovo x200 to allow 352M vram to work. TEST: build and flash on target with 4GB ram or more, use nvramtool to set gfx_uma_size to 352M and reboot. Change-Id: I5ab066252339ac7d85149d91b09a9eaaaab3b5b6 Signed-off-by: Arthur Heymans Reviewed-on: https://review.coreboot.org/16831 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth --- src/northbridge/intel/gm45/igd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/northbridge') diff --git a/src/northbridge/intel/gm45/igd.c b/src/northbridge/intel/gm45/igd.c index 73f765148a..74572ca72a 100644 --- a/src/northbridge/intel/gm45/igd.c +++ b/src/northbridge/intel/gm45/igd.c @@ -157,7 +157,7 @@ void igd_compute_ggc(sysinfo_t *const sysinfo) gfxsize = 4; } /* Handle invalid cmos settings */ - if (gfxsize > 11) + if (gfxsize > 12) gfxsize = 4; sysinfo->ggc = 0x0300 | ((gfxsize + 1) << 4); if (!(capid & (1 << (48 - 32)))) -- cgit v1.2.3