Re: [nwst-dev] Re: Video on the ns1000

[Santiago G. M. <ma...@ay...>]

I have just had lunch, yes, at 17:30 :-(

I have been till late at work trying to get java to work on mozilla on the
NC, but I could not do it (Igalia guys reading this, you could have a look
at this) the Blackdown-1.3.1-02b-FCS machine didn't seem to run ok on powerpc
:-( I have not been able to find IBM's JVM for powerpc (that sounds weird to
me) and blackdown 1.1 machine doesn't seem to have a plugin for Mozilla.

Anyway, I was testing this because I had patched the kernel to get the
64Megs used and so I had memory for a jvm.

> I uploaded a newer patch that fixes the memory size problem and the slow
> timer. This version also knows how to output the kernel command line

Heh heh, rules, I left the ppc compiling it and has finished by now, I'll
test tomorrow.

> prompt to the vga. The boot graphics driver uses whatever is configured
> in the firmware for the x-server. You need to disable CONFIG_VGA_CONSOLE
> for the built-in fb driver to work.

Umm, is that because of the command line output to the vga? Because I was
having 1024x768 with CONFIG_VGA_CONSOLE enabled and having a 128x48 console
without any problem. I'll try to have a look at the code tomorrow, I didn't
have time today.

> As you said, this driver does not init
> the VGA registers, so it will only run at the resolution set by the
> firmware.

Umm, when are we gonna have mode switching on the FB? I mean, like being
able to use 16bpp or something like that :-) Did you have any luck with your
info for setting the modes?

> Can you also post what you added to the fb driver? Is that the init code
> from cyberfb.c?

Nope, I don't have any init code, I just played with the mode settings, I
calculated the values from the XFree settings for 1024x768x85 ISO stuff.

Here is my patch:

diff -r -u linux-2.4.19.orig/drivers/video/s3trio.c linux-2.4.19/drivers/video/s3trio.c
--- linux-2.4.19.orig/drivers/video/s3trio.c	Thu Nov 28 18:34:19 2002
+++ linux-2.4.19/drivers/video/s3trio.c	Wed Nov 27 10:32:51 2002
@@ -72,12 +72,23 @@
 
 static struct fb_fix_screeninfo fb_fix;
 static struct fb_var_screeninfo fb_var = {
+		1024, 768, 1024, 768, 0, 0, 8, 0,
+		{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
+		/* 1024x768, 85 Hz,    pixclock (ns) lm   rm  um  lm hs  vs */
+		0, 0, -1, -1, FB_ACCELF_TEXT, 10580, 208, 48, 36, 1, 96, 3,
+		FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, 
+		FB_VMODE_NONINTERLACED
+};
+
+/*
+static struct fb_var_screeninfo fb_var = {
 		640, 480, 640, 480, 0, 0, 8, 0,
 		{0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
 		0, 0, -1, -1, FB_ACCELF_TEXT, 39722, 40, 24, 32, 11, 96, 2,
 		FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, 
 		FB_VMODE_NONINTERLACED
 };
+*/
 
 static struct fb_var_screeninfo default_var_640x480 = {
 		640, 480, 640, 480, 0, 0, 8, 0,
@@ -331,8 +342,8 @@
 	outw(SRC_BACKGROUND | MIX_SRC,  0xb6e8);/* direct color*/
 	outw(MF_T_CLIP | 0, 0xbee8 );     /* clip virtual area  */
 	outw(MF_L_CLIP | 0, 0xbee8 );
-	outw(MF_R_CLIP | (640 - 1), 0xbee8);
-	outw(MF_B_CLIP | (480 - 1),  0xbee8);
+	outw(MF_R_CLIP | (1024 - 1), 0xbee8);
+	outw(MF_B_CLIP | (768 - 1),  0xbee8);
 	Trio_WaitQueue(0x0400);
 	outw(0xffff,  0xaae8);       /* Enable all planes */
 	outw(0xffff, 0xaae8);       /* Enable all planes */
@@ -570,7 +581,7 @@
 
     s3trio_setcolreg(255, 56, 100, 160, 0, NULL /* not used */);
     s3trio_setcolreg(254, 0, 0, 0, 0, NULL /* not used */);
-    memset((char *)s3trio_base, 0, 640*480);
+    memset((char *)s3trio_base, 0, 1024*768);
 
 #if 0
     Trio_RectFill(0, 0, 90, 90, 7, 1);
@@ -804,7 +815,7 @@
 
     s3trio_setcolreg(255, 56, 100, 160, 0, NULL /* not used */);
     s3trio_setcolreg(254, 0, 0, 0, 0, NULL /* not used */);
-    memset((char *)s3trio_base, 0, 640*480);
+    memset((char *)s3trio_base, 0, 1024*768);
 
 #if 0
     Trio_RectFill(0, 0, 90, 90, 7, 1);


> Don't know about alsa. The kernel contains an OSS driver for the Chrystal
> Semi CS4232, but the PReP code in arch/ppc/prep_setup.c is broken. The
> broken code does nothing more than load the driver with the proper settings
> for the machine, i.e. io, interrupt, dma - I think. You should be able to
> enable modules for the kernel, compile cs4232 as module, and insmod with
> proper command line options.

I think I tried this but it didn't compile, I'll try again.

> One weird thing with the nfs root fs -- the mount command does not show any
> of the mounts, i.e. rootfs, /proc, /dev, etc. ???? The nfs root fs works
> very nicely otherwise.

Yes, this is because the root fs is read only (at least I have it like that)
and /etc/mtab doesn't show a thing about actual mounts, I'll try to get this
a little bit better, and also to fix the lot of noisy errors coming on the
screen, but after we get all hard working, I prefer to try to get hard
working first. ;-)

Well, let's see if we can get the FB to work on 16 bits and that sound and
we are almost done ;-)

Regards!