Paul Menzel (paulepanter@users.sourceforge.net) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/5934
-gerrit
commit 6f056d0f67b641520a7826528867568a60bdeb91 Author: Paul Menzel paulepanter@users.sourceforge.net Date: Thu Jun 5 09:38:39 2014 +0200
lenovo/x60/i915.c: Log `PGETBL_CTL` programming
Correctly setting up `PGETBL_CTL` is essential for the operating system driver to work correctly. Therefore log it more verbosely.
Change-Id: I9b3dfa52f91c13e768c2ef980e5871173a85fcfe Signed-off-by: Paul Menzel paulepanter@users.sourceforge.net --- src/mainboard/lenovo/x60/i915.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/src/mainboard/lenovo/x60/i915.c b/src/mainboard/lenovo/x60/i915.c index 016217f..95b836a 100644 --- a/src/mainboard/lenovo/x60/i915.c +++ b/src/mainboard/lenovo/x60/i915.c @@ -141,13 +141,16 @@ int gtt_setup(unsigned int mmiobase)
write32(mmiobase + GFX_FLSH_CNTL, 0);
+ printk(BIOS_DEBUG, "%s: Write %lx to PGETBL_CTL ...", __func__, pgetbl_ctl); write32(mmiobase + PGETBL_CTL, pgetbl_ctl);
/* verify */ - if (read32(mmiobase + PGETBL_CTL) & PGETBL_ENABLED) { - printk(BIOS_DEBUG, "gtt_setup is enabled.\n"); + pgetbl_ctl = read32(mmiobase + PGETBL_CTL); + printk(BIOS_DEBUG, " read back %lx ...", pgetbl_ctl); + if (pgetbl_ctl & PGETBL_ENABLED) { + printk(BIOS_DEBUG, " GM mappings enabled ... GTT setup successful.\n"); } else { - printk(BIOS_DEBUG, "gtt_setup failed!!!\n"); + printk(BIOS_DEBUG, " GM mappings disabled ... GTT setup failed.\n"); return 1; } write32(mmiobase + GFX_FLSH_CNTL, 0);