RE: Booting AMD Elan520 without BIOS

[Joan Bertran]

> -Mensaje original-
> De: Jon Burgess [mailto:[EMAIL PROTECTED]]
> Enviado el: viernes 24 de noviembre de 2000 16:40
> Para: [EMAIL PROTECTED]
> Cc: '[EMAIL PROTECTED]'; '[EMAIL PROTECTED]'
> Asunto: Re: Booting AMD Elan520 without BIOS
> 
> 
> 
> I've seen this on a board with a BIOS problem. I think it is 
> caused because 
> the
> Kernel is in a loop waiting for a timer interrupt to occur. If the 
> interrupt
> never arrives it loops forever.
> 
>  Jon
> 
> 
 I think so, because I've read somewhere the kernel needs interrupts 
configured, but as kernel configures i8259 I don't know what is necessary,
the IDT with interrupt service routines ?, sommething special about the chipset ?

Joan Bertran.


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Config setting to remove linux logo

[Joan Bertran]

 I know that there is a similar question about this in linux-kernel Fri, 01 Oct 1999
but I will like that the Linux logo were a config option. The difference betwen
the stripped uncompressed vmlinux 2.4.0-test11 file is of 12288 bytes.

 I have a patch without the config menu option:
diff -ur ./linux-2.4.0.test11_orig/drivers/video/fbcon.c 
./linux-2.4.0.test11/drivers/video/fbcon.c
--- ./linux-2.4.0.test11_orig/drivers/video/fbcon.c Sun Oct 29 06:17:34 2000
+++ ./linux-2.4.0.test11/drivers/video/fbcon.c  Mon Dec  4 16:00:21 2000
@@ -53,6 +53,7 @@
  *  License.  See the file COPYING in the main directory of this archive for
  *  more details.
  */
+#define NO_FB_LOGO
 
 #undef FBCONDEBUG
 
@@ -94,8 +95,11 @@
 #ifdef CONFIG_FBCON_VGA_PLANES
 #include 
 #endif
+
+#ifndef NO_FB_LOGO
 #define INCLUDE_LINUX_LOGO_DATA
 #include 
+#endif
 
 #include 
 #include/* for 6x11 font on mac */
@@ -113,8 +117,12 @@
 
 struct display fb_display[MAX_NR_CONSOLES];
 char con2fb_map[MAX_NR_CONSOLES];
+
+#ifndef NO_FB_LOGO
 static int logo_lines;
 static int logo_shown = -1;
+#endif /* NO_FB_LOGO */
+
 /* Software scrollback */
 int fbcon_softback_size = 32768;
 static unsigned long softback_buf, softback_curr;
@@ -211,8 +219,11 @@
 struct display *p, int count);
 static void fbcon_bmove_rec(struct display *p, int sy, int sx, int dy, int dx,
int height, int width, u_int y_break);
-
+#ifndef NO_FB_LOGO
 static int fbcon_show_logo(void);
+#else
+static inline int fbcon_show_logo(void) {}
+#endif
 
 #ifdef CONFIG_MAC
 /*
@@ -604,6 +615,7 @@
 nr_cols = p->var.xres/fontwidth(p);
 nr_rows = p->var.yres/fontheight(p);
 
+#ifndef NO_FB_LOGO
 if (logo) {
/* Need to make room for the logo */
int cnt;
@@ -642,6 +654,7 @@
conp->vc_video_erase_char, 
conp->vc_size_row * logo_lines);
 }
+#endif /* NO_FB_LOGO */
 
 /*
  *  ++guenther: console.c:vc_allocate() relies on initializing
@@ -691,17 +704,21 @@
}
if (save) {
q = (unsigned short *)(conp->vc_origin + conp->vc_size_row * old_rows);
+#ifndef NO_FB_LOGO
scr_memcpyw(q, save, logo_lines * nr_cols * 2);
conp->vc_y += logo_lines;
conp->vc_pos += logo_lines * conp->vc_size_row;
+#endif /* NO_FB_LOGO */
kfree(save);
}
 }

+#ifndef NO_FB_LOGO
 if (logo) {
logo_shown = -2;
conp->vc_top = logo_lines;
 }
+#endif /* NO_FB_LOGO */
 
 if (con == fg_console && softback_buf) {
int l = fbcon_softback_size / conp->vc_size_row;
@@ -1233,7 +1250,9 @@
count = conp->vc_rows;
if (softback_top)
fbcon_softback_note(conp, t, count);
+#ifndef NO_FB_LOGO
if (logo_shown >= 0) goto redraw_up;
+#endif
switch (p->scrollmode & __SCROLL_YMASK) {
case __SCROLL_YMOVE:
p->dispsw->bmove(p, t+count, 0, t, 0, b-t-count,
@@ -1435,6 +1454,7 @@
softback_top = 0;
}
 }
+#ifndef NO_FB_LOGO
 if (logo_shown >= 0) {
struct vc_data *conp2 = vc_cons[logo_shown].d;

@@ -1442,6 +1462,7 @@
conp2->vc_top = 0;
logo_shown = -1;
 }
+#endif /* NO_FB_LOGO */
 p->var.yoffset = p->yscroll = 0;
 switch (p->scrollmode & __SCROLL_YMASK) {
case __SCROLL_YWRAP:
@@ -1463,6 +1484,8 @@
(*info->switch_con)(unit, info);
 if (p->dispsw->clear_margins && vt_cons[unit]->vc_mode == KD_TEXT)
p->dispsw->clear_margins(conp, p, 0);
+
+#ifndef NO_FB_LOGO
 if (logo_shown == -2) {
logo_shown = fg_console;
fbcon_show_logo(); /* This is protected above by initmem_freed */
@@ -1471,6 +1494,8 @@
  conp->vc_size_row * (conp->vc_bottom - conp->vc_top) / 2);
return 0;
 }
+#endif
+
 return 1;
 }
 
@@ -1964,6 +1989,7 @@
return 0;
if (vt_cons[unit]->vc_mode != KD_TEXT || !lines)
return 0;
+#ifndef NO_FB_LOGO
if (logo_shown >= 0) {
struct vc_data *conp2 = vc_cons[logo_shown].d;

@@ -1987,6 +2013,7 @@
}
logo_shown = -1;
}
+#endif /* NO_FB_LOGO */
fbcon_cursor(conp, CM_ERASE|CM_SOFTBACK);
fbcon_redraw_softback(conp, p, lines);
fbcon_cursor(conp, CM_DRAW|CM_SOFTBACK);
@@ -2045,6 +2072,7 @@
 return n<0 ? d>>-n : d