Re: [coreboot] Asus F2A85-M progress

[David Hubbard]

Hi all,

On Mon, Dec 17, 2012 at 6:40 AM, Bernhard Urban  wrote:
> On Mon, Dec 17, 2012 at 2:33 PM,   wrote:
> > Rudolf Marek writes:
> > > Maybe it is slowly time to prepare a patch, I think I will need to write a
> > > porting guide + specific AGESA bits.
> >
> > I would be really helpful if you would write a guide. I've been trying to
> > port the asus m5a88 board to agesa but I haven't managed to get it working
> > correctly yet.
> > So a guide explaining how to port + AGESA would be great.
>
> +1
> similar situation here with the asus m5a99x (yeah, progress is slow... :))
>
> btw, great work ruik :-)

Seconded! (Thirded?) I'd also be very interested to read a porting
guide even though I have the f2a85-m board.

If I can assist with the m5a99x and m5a88 in any way, I'd be happy to.

I got SerialICE to start up and respond to simple commands. (I haven't
run the BIOS image in Qemu yet, but commands such as *mb work.)

I selected the Asus M4A77TD_PRO board. Since SerialICE only needs to
know how to init the chipset and superio enough to talk to the serial
port, this is close enough. If you'd like to try SerialICE on a board
other than mine (f2a85-m/csm) you should check src/mainboard/<your
board>/romstage.c and start at cache_as_ram_main()

For example, src/mainboard/amd/thatcher/
romstage.c has only a few lines before it8712f_enable_serial() gets
called. The code in it8712f_enable_serial() is also important.

I compared the coreboot code to SerialICE/mainboard/asus_m4a77td_pro.c
chipset_init()

The same i/o is done even though it is for a different chipset and
superio, so I decided to give it a try. I made sure to have a backup
flash chip in a safe place in case this didn't work.

Here's a shell script to build SerialICE -- checks it out from svn,
then builds serialice.rom in the current directory. The flash image is
filled with 0xff bytes because flashrom is smart enough to only write
to blocks that differ. SerialICE itself generates a flash image by
repeating the same 64K SerialICE rom from the start of the chip to the
end -- nothing wrong with that, I just wanted faster flashing by not
changing blocks unless necessary.

You will most likely need to edit the script to change the size of the
flash image. SerialICE itself is only 64K, but for an 8MB flash I get:
sha256sum serialice.rom
cd5b283bdcc017b3f27ee4064b9ec238d8223a7b04a7e69cad2e85a158b3cd90 serialice.rom

*************************************************
#!/bin/bash
# use set -e once errors handle ok

MISSING=""
INSTALL=""
C=""
if type apt-get >/dev/null 2>&1; then
    C="apt-get install"
elif type emerge >/dev/null 2>&1; then
    C="emerge -av"
elif type yum >/dev/null 2>&1; then
    C="yum install"
fi
export C

add_install()
{
    MISSING="$MISSING $1"
    export MISSING
    INSTALL="$INSTALL $2"
    export INSTALL
}

is_installed()
{
    type $1 >/dev/null 2>&1 || add_install $*
}

is_installed svn subversion
is_installed gcc gcc
if [ -n "$INSTALL" ]; then
    echo "Missing tools:$MISSING"
    echo "  Please type: sudo $C$INSTALL"
    echo "  and try again"
    exit 1
fi

if [ ! -d SerialICE ]; then
    svn co svn://serialice.com/serialice/trunk/SerialICE SerialICE || exit 1
fi

cd SerialICE || exit 1

#
# copy of my .config file: Asus M4A77TD_PRO board
# note: build/config.h is tightly coupled to .config: update both at
the same time
#
cat <<EOF > .config || exit 1
CONFIG_BOARD_ASUS_M4A77TD_PRO=y
CONFIG_BOARD_INIT="asus_m4a77td-pro.c"
CONFIG_SERIAL=y
# CONFIG_USB is not set
CONFIG_SERIAL_COM1=y
# CONFIG_SERIAL_COM2 is not set
CONFIG_SERIAL_PORT=0x3f8
CONFIG_SERIAL_115200=y
# CONFIG_SERIAL_57600 is not set
# CONFIG_SERIAL_38400 is not set
# CONFIG_SERIAL_19200 is not set
# CONFIG_SERIAL_9600 is not set
CONFIG_SERIAL_BAUDRATE=115200
# CONFIG_EXPERIMENTAL is not set
CONFIG_EXPERT=y
CONFIG_HAVE_SSE=y
CONFIG_BUILD_ROMCC=y
# CONFIG_BUILD_XMMSTACK is not set
EOF

mkdir -p build || exit 1
cat <<EOF > build/config.h || exit 1
/*
 * Automatically generated C config: don't edit
 * SerialICE version: 1.5
 * Mon Dec 17 21:09:33 2012
 */
#define AUTOCONF_INCLUDED
#define CONFIG_SERIAL_COM1 1
#define CONFIG_BUILD_ROMCC 1
#define CONFIG_SERIAL_115200 1
#define CONFIG_SERIAL_PORT 0x3f8
#define CONFIG_SERIAL_BAUDRATE 115200
#define CONFIG_HAVE_SSE 1
#define CONFIG_BOARD_ASUS_M4A77TD_PRO 1
#define CONFIG_SERIAL 1
#define CONFIG_EXPERT 1
#define CONFIG_BOARD_INIT "asus_m4a77td-pro.c"
EOF

#
# build serialice.rom
#
make -j5 || exit 1
cd .. || exit 1

# pad serialice.rom to the size of the flash chip
S=$(( 8*1048576 ))
awk "BEGIN{for (i=0; i<$(( $S / 16 )); i++) printf
"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff";exit}"
> serialice.rom

dd if=SerialICE/build/serialice.rom of=serialice.rom bs=4096
conv=notrunc # put serialice.rom at start of flash
dd if=SerialICE/build/serialice.rom of=serialice.rom bs=4096 seek=$((
( $S - `stat -c %s SerialICE/build/serialice.rom` )/4096 )) # and at
end of flash
echo ""
echo "Now build SerialICE QEMU Host (see SerialICE/patches/* and
serialice.com/Installation.html)"
ls --color=always -l serialice.rom

*************************************************

Regards,
David