diff options
author | Ron Minnich <Ron Minnich> | 2006-07-28 16:06:16 +0000 |
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committer | Ronald G. Minnich <rminnich@gmail.com> | 2006-07-28 16:06:16 +0000 |
commit | 5e9dc231209c1a293b5a92a9ea78eb07ce0a3086 (patch) | |
tree | 00c90e50087fba91bf5fb2cab050b3191b1daf46 /src/northbridge/amd/lx/grphinit.c | |
parent | e534daa05ae7057ad615e15fa3021b19f4850fd0 (diff) |
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
Diffstat (limited to 'src/northbridge/amd/lx/grphinit.c')
-rw-r--r-- | src/northbridge/amd/lx/grphinit.c | 43 |
1 files changed, 43 insertions, 0 deletions
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 <arch/io.h> +#include <stdint.h> +#include <cpu/amd/vr.h> + +#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)); +} + + |