From 5e9dc231209c1a293b5a92a9ea78eb07ce0a3086 Mon Sep 17 00:00:00 2001 From: Ron Minnich Date: Fri, 28 Jul 2006 16:06:16 +0000 Subject: This patch adds support for the AMD LX cpu. There is one global change to pci_ids.h. The rest are changes for LX. I ran abuild and it is ok. Not all artec design changes are included as some of them would adversely affect other mainboards. Indrek will need to test. Signed-off-by: Ron Minnich Signed-off-by: Indrek Kruusa, indrek.kruusa@artecdesign.ee, artec design. git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2350 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/northbridge/amd/lx/grphinit.c | 43 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 src/northbridge/amd/lx/grphinit.c (limited to 'src/northbridge/amd/lx/grphinit.c') diff --git a/src/northbridge/amd/lx/grphinit.c b/src/northbridge/amd/lx/grphinit.c new file mode 100644 index 0000000000..4e0da1789d --- /dev/null +++ b/src/northbridge/amd/lx/grphinit.c @@ -0,0 +1,43 @@ +#include +#include +#include + +#define VIDEO_MB 8 // MB of video memory + +/* + * Write to a Virtual Register + * AX = Class/Index + * CX = data to write + */ +void vrWrite(uint16_t wClassIndex, uint16_t wData) +{ + outl(((uint32_t) VR_UNLOCK << 16) | wClassIndex, VRC_INDEX); + outw(wData, VRC_DATA); +} + + /* + * Read from a Virtual Register + * AX = Class/Index + * Returns a 16-bit word of data + */ +uint16_t vrRead(uint16_t wClassIndex) +{ + uint16_t wData; + outl(((uint32_t) VR_UNLOCK << 16) | wClassIndex, VRC_INDEX); + wData = inw(VRC_DATA); + return wData; +} + +/* + * This function mirrors the Graphics_Init routine in GeodeROM. + */ +void graphics_init(void) +{ + /* SoftVG initialization */ + + /* Call SoftVG with the main configuration parameters. */ + /* NOTE: SoftVG expects the memory size to be given in 512 KB pages */ + vrWrite((VRC_VG << 8) + VG_MEM_SIZE, 0x0100 | (VIDEO_MB * 2)); +} + + -- cgit v1.2.3