Re: epia800 direct vga working

[Nathanael Noblet]

Just wondering, have these changes been merged into the freebios tree? 
I've been having sporadic VGA problems on my epia800 and wondered if I 
had the latest or if I should start taking a peek at what is not 
working..?
> diff --exclude-from exclude_epia --recursive --unified -P 
> freebios/src/mainboard/via/epia/Config 
> freebios_epia_works/src/mainboard/via/epia/Config
> --- freebios/src/mainboard/via/epia/Config	Sun Sep  7 18:22:01 2003
> +++ freebios_epia_works/src/mainboard/via/epia/Config	Sun Sep  7 
> 17:24:15 2003
> @@ -6,6 +6,7 @@
>  mainboardinit cpu/i386/reset16.inc
>  ldscript cpu/i386/reset16.lds
>
> +option VGA_HARDWARE_FIXUP=1
>  mainboardinit superio/via/vt8231/setup_ethernet.inc
>  mainboardinit superio/via/vt8231/setup_serial.inc
>  mainboardinit pc80/serial.inc
> diff --exclude-from exclude_epia --recursive --unified -P 
> freebios/src/mainboard/via/epia/mainboard.c 
> freebios_epia_works/src/mainboard/via/epia/mainboard.c
> --- freebios/src/mainboard/via/epia/mainboard.c	Sun Sep  7 18:22:01 
> 2003
> +++ freebios_epia_works/src/mainboard/via/epia/mainboard.c	Sun Sep  7 
> 18:34:15 2003
> @@ -2,9 +2,18 @@
>  #include <pci.h>
>  #include <pci_ids.h>
>  #include <cpu/p5/io.h>
> +#include <pc80/vga.h>
>
> #include <types.h>
>
> +void northbridge_fixup();
> +void southbridge_fixup();
> +void video_init();
> +void nvram_on();
> +void keyboard_on();
> +void pci_assign_irqs(unsigned bus, unsigned slot, const unsigned char 
> pIntAtoD[4]);
>
> static const unsigned char southbridgeIrqs[4] = { 11, 5, 10, 12 };
>  static const unsigned char enetIrqs[4] = { 11, 5, 10, 12 };
>  static const unsigned char slotIrqs[4] = { 5, 10, 12, 11 };
> @@ -65,6 +74,15 @@
>
> nvram_on();
>    keyboard_on();
> southbridge_fixup();
>
> +#ifdef VIDEO_CONSOLE
> vga_hardware_fixup();
> // this has to be done here due to pci not always being up
> // earlier and pci resources are not ready
> video_init();
>
> +#endif
> pci_routing_fixup();
>
> }
>
> diff --exclude-from exclude_epia --recursive --unified -P 
> freebios/src/northbridge/via/vt8601/Config 
> freebios_epia_works/src/northbridge/via/vt8601/Config
> --- freebios/src/northbridge/via/vt8601/Config	Sun Sep  7 18:22:01 2003
> +++ freebios_epia_works/src/northbridge/via/vt8601/Config	Fri Sep  5 
> 10:27:10 2003
> @@ -1 +1,2 @@
>  object northbridge.o
> +object via_vga.o VIDEO_CONSOLE
> diff --exclude-from exclude_epia --recursive --unified -P 
> freebios/src/northbridge/via/vt8601/vgainit.inc 
> freebios_epia_works/src/northbridge/via/vt8601/vgainit.inc
> --- freebios/src/northbridge/via/vt8601/vgainit.inc	Sun Sep  7 
> 18:29:59 2003
> +++ freebios_epia_works/src/northbridge/via/vt8601/vgainit.inc	Sun Sep 
>  7 18:40:42 2003
> @@ -21,3 +21,32 @@
>
> #endif
>
> +#if VIDEO_CONSOLE
>
> +/*
> by Steve M. Gehlbach, Ph.D.
> steve @ kesa . com
> 9/7/03 smg
> minor chipset settings for vga
> more work needed for init, since reboot
> from linux has problems (hdwr reset okay)
> */
> // set shadow ram to award settings
> CS_WRITE($0x61, $0x2a)
> CS_WRITE($0x62, $0x00)
> CS_WRITE($0x63, $0x20)
> // turn off GA
> CS_WRITE($0x88,$0x00)
> // enable vga, fb
> CS_WRITE($0xF9,$0x42)
> CS_WRITE($0xFB,$0xb0)
>
> +#endif
>
> diff --exclude-from exclude_epia --recursive --unified -P 
> freebios/src/northbridge/via/vt8601/via_vga.c 
> freebios_epia_works/src/northbridge/via/vt8601/via_vga.c
> --- freebios/src/northbridge/via/vt8601/via_vga.c	Wed Dec 31 16:00:00 
> 1969
> +++ freebios_epia_works/src/northbridge/via/vt8601/via_vga.c	Sun Sep  
> 7 16:11:37 2003
> @@ -0,0 +1,168 @@
> +/*
> By
> Steve M. Gehlbach <steve @ kesa . com>
> vga initialization specific for
> via vt8601 chipset
> The font load code follows technique used
> in the tiara project, which came from
> the Universal Talkware Boot Loader,
> http://www.talkware.net.
> */
>
> +#include <video_subr.h>
> +#include <subr.h>
> +#include <string.h>
> +#include <pc80/vga.h>
> +#include <cpu/p5/io.h>
> +#include <subr.h>
> +#include <printk.h>
>
> +#define VGA_FONT_BASE 0xa0000;
> +#define VGA_GRAFIX_BASE 0xa0000;
> +#define CHAR_HEIGHT 16
>
> +// splash_done is a global to avoid putting up splash screen twice.
> +// Kind of a hack, but the problem is that the vga pci resources
> +// are sometimes ready early, sort of, and the initial call to
> +// vga_hardware_fixup puts up the splash screen; then a later call
> +// to it from hardware_main does it again; but this does not always
> +// happen, sometimes it fails the first call.  It is either a timing 
> or initialization
> +// problem that needs to be tracked down and fixed. Note that both 
> calls (fixup) are necessary
> +// since some vga boards are not ready early, but some are, and of 
> course, the epia is sometimes ready
> +// and sometimes not ready.
> +//
> +int splash_done = 0;
>
> +extern unsigned char fontdata_8x16[];
> +extern void beep (int msec);
> +extern void udelay (int usec);
>
> +// The screeninfo structure is in pc80/vga_load_regs.c and has the vga
> +// parameters for screen size etc.
> +// This is _not_ the struct used in the zero_page
> +// for linux init.  It is only used for vga init.
> +extern struct screeninfo vga_settings;
>
> +// prototypes
> +int vga_decode_var(struct screeninfo *var, struct vga_par *par);
> +int vga_set_regs(struct vga_par *par);
>
> +void vga_set_amode(void);
> +void vga_set_gmode(void);
> +void delay(int secs);
> +void mdelay(int msecs);
> +void vga_font_load(unsigned char *vidmem, unsigned char *font, int 
> height, int num_chars);
> +int vga_load_pcx( char * pcx_file, int pcx_file_length);
>
> +void vt8601_video_init(void) {
> int res;
> u8 byte;
> struct vga_par vga_params;
> // convert the general vga parameters in screeninfo structure
> // to actual vga register settings
> res = vga_decode_var(&vga_settings, &vga_params);
> if ( res < 0 ) { post_code (0xFD); } //no error return for now
> // enable vga system
> outb(0x01, 0x3c3); // enable VGA
> // write the registers
> res = vga_set_regs( &vga_params );
> if ( res < 0 ) { post_code(0xFE); } //no error return for now
> byte = inb(MIS_R); // get 3c2 value by reading 3cc
> outb(byte & ~0xc,MIS_W); // clear last bits to set 25Mhz clock
> // enable epia extended regs
> write_seq(0x92,0x11);
> // setup the video clocks
> // -follows award settings
> // not all of these are necessary
> write_seq(0xbd,0x18);
> write_seq(0xcc,0x19);
> write_seq(0xff,0x1a);
> write_seq(0xff,0x1b);
> write_seq(0x46,0x1c);
> write_seq(0xbf,0x1d);
> write_seq(0xff,0x1e);
> write_seq(0xcc,0x1f);
> write_seq(0x04,0x20);
> write_seq(0x4f,0x24);
> // setup extended crtc regs
> // -follows award settings
> // not all of these are necessary
> write_crtc(0x64,0x1f);
> write_crtc(0x20,0x20);
> write_crtc(0x0,0x21);
> write_crtc(0x7,0x25);
> write_crtc(0x4,0x29);
> write_crtc(0x1f,0x2a);
> write_crtc(0x0,0x2b);
> write_crtc(0xdf,0x2f);
> write_crtc(0x10,0x38);
>
> +}
>
> +#ifdef VGA_HARDWARE_FIXUP
> +void vga_hardware_fixup(void) {
> u8 *font_mem, *vga_mem, *pcx_file;
> int *file_size;
>
> +#ifdef PCX_FILE_LOCATION
> pcx_file = (u8 *) PCX_FILE_LOCATION;
>
> +#else
> pcx_file = (u8 *) 0xfffe0000;
>
> +#endif
> file_size = (int *) pcx_file;
> vga_mem = (u8 *) VGA_GRAFIX_BASE;
> font_mem = (u8 *) VGA_FONT_BASE;
> outb(0x01, 0x3b8); // enable VGA
> outb(0x01, 0x3c3); // enable VGA
> outb(0x08, 0x46e8); // enable VGA (does not appear to be used)
> if (inb(0x3c3) != 1) {
>    	printk_info("VGA not ready yet.\n");
> return;
> }
> printk_info("Initializing vt8601 vga...");
> post_code(0xa0);
> vt8601_video_init();
> printk_info("done.\n");
>
> +#ifdef VIDEO_SHOW_LOGO
> if (!splash_done) {
> printk_debug("Setting graphics mode...\n");
> vga_set_gmode(); // set graphics mode
> //
> // the pcx_file is in flash at an address set
> // in the config file with PCX_FILE_LOCATION
> // the length of the file is at offset 0, file starts at 4
> //
> printk_debug("pcx file at %x length %d\n",&pcx_file[4], *file_size);
> vga_load_pcx( &pcx_file[4], *file_size);
> delay(VIDEO_SHOW_LOGO);
>
> +#endif
> vga_set_amode();
> vga_font_load(font_mem,fontdata_8x16,CHAR_HEIGHT,256);
> splash_done++; // mark done
> printk_debug("alpha mode set.\n");
> post_code(0xa1);
> }
>
> +}
> +#endif
> diff --exclude-from exclude_epia --recursive --unified -P 
> freebios/util/config/epia800.config 
> freebios_epia_works/util/config/epia800.config
> --- freebios/util/config/epia800.config	Wed Dec 31 16:00:00 1969
> +++ freebios_epia_works/util/config/epia800.config	Sun Sep  7 16:48:42 
> 2003
> @@ -0,0 +1,63 @@
> +#
> +# LinuxBIOS config file for: VIA epia mini-itx
> +#
>
> +target /usr/src/epia
>
> +# via epia
> +mainboard via/epia
> +biosbase 0xffff0000
>
> +# setup delay using TSC
> +option CONFIG_UDELAY_TSC=1
>
> +# Enable Serial Console for debugging
> +option CONFIG_COMPRESS=0
> +option SERIAL_CONSOLE=1
> +option VIDEO_CONSOLE=1
> +option TTYS0_BAUD=115200
>
> +# For printk_debug, set level to 8
> +# for printk_info, set level to 7
> +#option DEFAULT_CONSOLE_LOGLEVEL=8
> +#option DEFAULT_CONSOLE_LOGLEVEL=7
> +option DEFAULT_CONSOLE_LOGLEVEL=6
>
> +#option DEBUG=1
>
> +option BOOT_IDE=1
> +option IDE_BOOT_DRIVE=0
> +#need to know size of partition table for ide
> +#option ONE_TRACK=32
> +option ONE_TRACK=63
>
> +# the logo is displayed for VIDEO_SHOW_LOGO seconds.
> +# Need to have to have a 128k rom since the logo image is at the
> +# beginning (0xfffe0000)
> +option VIDEO_SHOW_LOGO=10
> +option ROM_IMAGE_SIZE=131072
> +option PCX_FILE_LOCATION=0xfffe0000
>
> +# Use 256KB Standard Flash as Normal BIOS
> +option RAMTEST=1
>
> +linux /usr/src/linux
> +commandline root=/dev/hda2 ro console=ttyS0,115200n8 console=tty1
>
> +#
> +# these actions put the pcx image file on the front of the bios.
> +# the image size is placed in the first 4 bytes then the pcx file
> +# important that ROM_IMAGE_SIZE be set to 128K or larger.
> +# The logo file is called linuxbioslogo.pcx and is by default located 
> at
> +# src/pc80/linuxbioslogo.pcx.
> +# Change the variable LOGOFILE below if you want to use your own file.
> +# See the file src/pc80/vga_load_pcx.c for details on the file format.
> +#
> +option LOGOFILE=$(TOP)/src/pc80/linuxbioslogo.pcx
> +addaction linuxbios.rom dd if=$(LOGOFILE) of=linuxbios.rom bs=1 
> seek=4 conv=notrunc;
> +addaction linuxbios.rom perl -e '@a=stat 
> "$(LOGOFILE)";$$a=pack("L",$$a[7]); print $$a' | dd of=linuxbios.rom 
> bs=1 conv=notrunc
>
> +# copy to home dir where flash programmer can reach.
> +addaction linuxbios.rom /bin/cp -f linuxbios.rom 
> $(HOME)/cti/software/bios/exp/linuxbios_epia.bin