Re: The time has come ...
Hi Jules,
> > Are you using a cgsix framebuffer? The current kernels have a problem with
> > the cgsix, which Davem narrowed down to the cg6_reset function.
> > Do you get booted back to the PROM? If so can you get the results of:
> > .locals .registers ctrace
> > As well as your System.map
> Hmm. It does sound exactly like that.
> Unfortunately the PROM is rarely readable, since the CLUT has generally made
> background == foreground. However, I'll try to get those data.
> How come I never read about this on sparclinux@vger? Did I just miss it?
I found it at http://dm.cobaltmicro.com/~davem/ultra-todo.html
Let me know if this fixes your problem.
Cheers,
Anton
--- linux/drivers/video/cgsixfb_old.c Thu Nov 26 15:04:28 1998
+++ linux/drivers/video/cgsixfb.c Thu Nov 26 15:07:37 1998
@@ -534,6 +534,7 @@
unsigned int rev, conf;
struct cg6_tec *tec = fb->s.cg6.tec;
struct cg6_fbc *fbc = fb->s.cg6.fbc;
+ u32 mode;
/* Turn off stuff in the Transform Engine. */
tec->tec_matrix = 0;
@@ -552,15 +553,20 @@
*(fb->s.cg6.fhc) = conf;
}
- /* Set things in the FBC. */
- fbc->mode &= ~(CG6_FBC_BLIT_MASK | CG6_FBC_MODE_MASK |
+ /* Set things in the FBC. Bad things appear to happen if we do
+ * back to back store/loads on the mode register, so copy it
+ * out instead. */
+ mode = fbc->mode;
+ mode &= ~(CG6_FBC_BLIT_MASK | CG6_FBC_MODE_MASK |
CG6_FBC_DRAW_MASK | CG6_FBC_BWRITE0_MASK |
CG6_FBC_BWRITE1_MASK | CG6_FBC_BREAD_MASK |
CG6_FBC_BDISP_MASK);
- fbc->mode |= (CG6_FBC_BLIT_SRC | CG6_FBC_MODE_COLOR8 |
+ mode |= (CG6_FBC_BLIT_SRC | CG6_FBC_MODE_COLOR8 |
CG6_FBC_DRAW_RENDER | CG6_FBC_BWRITE0_ENABLE |
CG6_FBC_BWRITE1_DISABLE | CG6_FBC_BREAD_0 |
CG6_FBC_BDISP_0);
+ fbc->mode = mode;
+
fbc->clip = 0;
fbc->offx = 0;
fbc->offy = 0;
Reply to: