RE: 2.6.10-rc3 for 8xx booting "load_kernel(...)" function probl em v s configuring and initializing serial console ?

From: Bastos Fernandez Alexandre <ALEBAS@televes.com>
To: linuxppc-embedded@ozlabs.org
Subject: RE: 2.6.10-rc3 for 8xx  booting "load_kernel(...)" function probl em v s configuring and initializing serial console ?
Date: Mon, 27 Dec 2004 09:00:39 +0100	[thread overview]
Message-ID: <51DB8827D393D411BB69003048003F46FDCF8A@tvesntr.televes.com> (raw)

Hi Alex
In mpc8272ads (that's PQ2 board) I use
  console=ttyCPM root=/dev/ram0
I don't know if this would help you.

Best regards

Alex ... Bastos :-)

-----Original Message-----
From:	Povolotsky, Alexander [SMTP:Alexander.Povolotsky@marconi.com]
Sent:	Thursday, December 23, 2004 6:24 PM
To:	linuxppc-embedded@ozlabs.org
Subject:	2.6.10-rc3 for 8xx  booting "load_kernel(...)" function
problem v s configuring and initializing serial console ?

Hi,

with

CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="console=ttyCPM0 panic=3 root=/dev/ram"
...
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
CONFIG_SERIAL_NONSTANDARD=y
# CONFIG_COMPUTONE is not set
# CONFIG_ROCKETPORT is not set
# CONFIG_CYCLADES is not set
# CONFIG_DIGIEPCA is not set
# CONFIG_DIGI is not set
# CONFIG_MOXA_INTELLIO is not set
# CONFIG_MOXA_SMARTIO is not set
# CONFIG_SYNCLINKMP is not set
# CONFIG_N_HDLC is not set
# CONFIG_RISCOM8 is not set
# CONFIG_SPECIALIX is not set
# CONFIG_SX is not set
# CONFIG_RIO is not set
# CONFIG_STALDRV is not set

#
# Serial drivers
#
# CONFIG_SERIAL_8250 is not set

#
# Non-8250 serial port support
#
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
CONFIG_SERIAL_CPM=y
CONFIG_SERIAL_CPM_CONSOLE=y
CONFIG_SERIAL_CPM_SCC1=y
CONFIG_SERIAL_CPM_SCC2=y
# CONFIG_SERIAL_CPM_SCC3 is not set
# CONFIG_SERIAL_CPM_SCC4 is not set
# CONFIG_SERIAL_CPM_SMC1 is not set
# CONFIG_SERIAL_CPM_SMC2 is not set
CONFIG_UNIX98_PTYS=y
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=256in my .config file,

 still somehow in 2.6.10-rc3 (for 8xx) the "load_kernel(...)" function in
the 
 ./arch/ppc/boot/simple/misc-embedded.c is not getting called during the
 boot ? (I think ...) ... or serial is not getting initialiazed correctly
within this function 
 when "serial_init(...)" function is called within it ?...

 (no JTAG emulator debugging is available to me on this board ...)

 **********On Linux 2.4.26 I used to see during the boot:*********

 (M)odify any of this or (C)ontinue? [M] C
 Updating parameter storage. This may take a while...
 Done writing in Storage Area
 Starting Application from bank 1
 Done

 ********(then from load_kernel() I would see)********** 
 loaded at:     00180000 0035622C
 board data at: 0035313C 0035317C
 relocated to:  001852CC 0018530C
 zimage at:     001857F9 00226057
 initrd at:     00227000 00352ADF
 avail ram:     00357000 02000000

 Linux/PPC load: panic=3 root=/dev/ram
 Uncompressing Linux...done.
 initrd moved:  00400000 0052BADF
 Now booting the kernel
 Running from bank 1
 Selecting default root device 1f04
 Linux version 2.4.26 (apovolot@localhost.localdomain) (gcc version 3.4.1)
#2
 Fri  Dec 10 13:37:12 EST 2004
 .....

 On 2.6.10-rc3 nothing "happens" (and then it is just getting reexecuted)
after I see:     Done

 Any ideas ?
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