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vmx(1): round up frame buffer size to whole pages, ignore vga access in linear framebuffer, tell openbsd about framebuffer

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This commit is contained in:
aiju 2017-06-20 18:20:25 +00:00
parent 164588e3e2
commit da6e5efe39
2 changed files with 34 additions and 0 deletions
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29
sys/src/cmd/vmx/ksetup.c
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@ -554,6 +554,34 @@ obsdend(void)
obsdarg0 = nil;
}
static void
obsdfb(void)
{
int i, s, p;
u32int r, g, b, a, m;
extern VgaMode *curmode, textmode;
extern uintptr fbaddr, fbsz;
if(curmode == &textmode) return;
p = r = g = b = a = 0;
for(i = 0; i < 4; i++){
s = curmode->chan >> 8 * i & 0xf;
if(s == 0) continue;
m = (1<<s)-1 << p;
p += s;
switch(curmode->chan >> 4 + 8 * i & 0xf){
case CRed: r |= m; break;
case CGreen: g |= m; break;
case CBlue: b |= m; break;
case CAlpha: case CIgnore: a |= m; break;
default: return;
}
}
obsdstart(BOOTARG_EFIINFO);
obsdpack("vvvviiiiiii", 0ULL, 0ULL, (uvlong)fbaddr, (uvlong)fbsz, curmode->h, curmode->w, curmode->w, r, g, b, a);
obsdend();
}
static void
obsdargs(void)
{
@ -572,6 +600,7 @@ obsdargs(void)
if(obsddbcons != -1){
obsdstart(BOOTARG_DDB); obsdpack("i", obsddbcons); obsdend();
}
obsdfb();
obsdstart(BOOTARG_END); obsdend();
}

5
sys/src/cmd/vmx/vga.c
View file

@ -17,6 +17,7 @@ uintptr fbaddr;
VgaMode *curmode, *nextmode, *modes, **modeslast = &modes;
int curhbytes, nexthbytes;
int vesamode, maxw, maxh;
int novga;
VgaMode textmode = {
.w 640, .h 400, .no 3
@ -152,6 +153,8 @@ vgaio(int isin, u16int port, u32int val, int sz, void *)
{
u32int m;
if(novga)
return 0;
if(port == 0x3d4 && sz == 2 && !isin){
vgaio(0, 0x3d4, (u8int)val, 1, nil);
return vgaio(0, 0x3d5, (u8int)(val >> 8), 1, nil);
@ -691,6 +694,8 @@ vgafbparse(char *fbstring)
if(vesamode == 0){
curmode = modes;
curhbytes = curmode->hbytes;
fbsz = -(-fbsz & -4096);
novga = 1;
}else{
curmode = &textmode;
if(fbsz < (1<<22))