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Switch initial colormap setup again to be compatible with the PROM's, 

i.e. background at index 0: white, foreground at index 255: black.

Also, allocate a slice for an ANSI colormap, so we can experiment
with coloured text on the bare console.
This commit is contained in:
pk 2000-04-16 22:07:24 +00:00
parent 0ba1516cd7
commit 065ce82243
1 changed files with 70 additions and 5 deletions
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75
sys/arch/sparc/dev/bt_subr.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: bt_subr.c,v 1.10 2000/04/04 21:47:17 pk Exp $ */
/* $NetBSD: bt_subr.c,v 1.11 2000/04/16 22:07:24 pk Exp $ */
/*
* Copyright (c) 1993
@ -195,8 +195,8 @@ out:
/*
* Initialize the color map to the default state:
*
* - 0 is black
* - all other entries are full white
* - 0 is white (PROM uses entry 0 for background)
* - all other entries are black (PROM uses entry 255 for foreground)
*/
void
bt_initcmap(cm, cmsize)
@ -207,8 +207,73 @@ bt_initcmap(cm, cmsize)
u_char *cp;
cp = &cm->cm_map[0][0];
cp[0] = cp[1] = cp[2] = 0;
cp[0] = cp[1] = cp[2] = 0xff;
for (i = 1, cp = &cm->cm_map[i][0]; i < cmsize; cp += 3, i++)
cp[0] = cp[1] = cp[2] = 0xff;
cp[0] = cp[1] = cp[2] = 0;
#ifdef RASTERCONSOLE
if (cmsize > 16) {
/*
* Setup an ANSI map at offset 1, for rasops;
* see dev/fb.c for usage (XXX - this should
* be replaced by more general colormap handling)
*/
extern u_char rasops_cmap[];
bcopy(rasops_cmap, &cm->cm_map[1][0], 3*16);
}
#endif
}
#if notyet
static void
bt_loadcmap_packed256(fb, bt, start, ncolors)
struct fbdevice *fb;
volatile struct bt_regs *bt;
int start, ncolors;
{
u_int v;
int count, i;
u_char *c[3], **p;
struct cmap *cm = &fb->fb_cmap;
count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3;
bt = &sc->sc_fbc->fbc_dac;
bt->bt_addr = BT_D4M4(start);
/*
* Figure out where to start in the RGB arrays
* See btreg.h for the way RGB triplets are packed into 4-byte words.
*/
c[0] = &cm->red[(4 * count) / 3)];
c[1] = &cm->green[(4 * count) / 3];
c[2] = &cm->blue[(4 * count) / 3];
p = &c[0];
i = (4 * count) % 3; /* This much of the last triplet is already in
the last packed word */
while (i--) {
c[1-i]++;
p++;
}
while (--count >= 0) {
u_int v = 0;
/*
* Retrieve four colormap entries, pack them into
* a 32-bit word and write to the hardware register.
*/
for (i = 0; i < 4; i++) {
u_char *cp = *p;
v |= *cp++ << (8 * i);
*p = cp;
if (p++ == &c[2])
/* Wrap around */
p = &c[0];
}
bt->bt_cmap = v;
}
}
#endif