[U-Boot-Users] s3c2440 -- serial_init
Tiju
tj_jac at yahoo.co.in
Fri Apr 4 16:59:48 CEST 2008
Hi Vishal,
I am stuck with the Kernel load address and entry point. It keeps on resetting. Output as shown below.
My ram range is from 30000000 to 38000000.
U-Boot 1.3.2 (Apr 4 2008 - 18:02:03)
DRAM: 128 MB
Flash: 32 MB
Using default environment
In: serial
Out: serial
Err: serial
Hit any key to stop autoboot: 0
## Booting image at 34000000 ...
Image Name: TIJU Linux-2.6.24.4 Image
Image Type: ARM Linux Kernel Image (gzip compressed)
Data Size: 4288104 Bytes = 4.1 MB
Load Address: 36000000
Entry Point: 36000000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
Starting kernel ...
undefined instruction
pc : [<3790e004>] lr : [<3101175c>]
sp : 30fcfaf8 ip : 30fcffb8 fp : 00000000
r10: 00000001 r9 : 30fcfe98 r8 : 30fcffdc
r7 : 31012e94 r6 : 34000040 r5 : 310194b4 r4 : 310194b1
r3 : 36000000 r2 : 30000100 r1 : 0000016a r0 : 00000000
Flags: nzCv IRQs off FIQs off Mode SVC_32
Resetting CPU ...
data abort
pc : [<31010ca8>] lr : [<31010d40>]
sp : 30fcfa88 ip : 3101afdc fp : 00000000
r10: 00000001 r9 : 30fcfe98 r8 : 30fcffdc
r7 : 31012e94 r6 : 34000040 r5 : 0065ba3e r4 : 00036042
r3 : 3101afe0 r2 : 00036042 r1 : 00003707 r0 : 000036ff
Flags: nzCv IRQs on FIQs on Mode SVC_32
Resetting CPU ...
What could be the problem?
Thanks,
Tiju
----- Original Message ----
From: Vishal Oliyil Kunnil <vishal.ok at gmail.com>
To: Tiju <tj_jac at yahoo.co.in>
Sent: Friday, 4 April, 2008 1:42:30 PM
Subject: Re: [U-Boot-Users] s3c2440 -- serial_init
Hi Tiju,
Never used the controller either, but I suggest you try enabling the
debug macro
in the ethernet driver ...
CONFIG_DM9000_DEBUG
-- snip --
#ifdef CONFIG_DM9000_DEBUG
#define DM9000_DBG(fmt,args....) printf(fmt ,##args)
#else /* */
#define DM9000_DBG(fmt,args...)
#endif /* */
--snip-
Regards,
Vishal
On Fri, Apr 4, 2008 at 12:35 PM, Tiju <tj_jac at yahoo.co.in> wrote:
>
> Hi Vishal,
>
> No, the ethernet controller is outside the processor. We are using DM9000A.
> The link led does not glow when LAN cable is connected. Instead when we ping
> it glows, but does not ping correctly.
>
> Thank You,
> Tiju
>
>
> ----- Original Message ----
> From: Vishal Oliyil Kunnil <vishal.ok at gmail.com>
> To: Tiju <tj_jac at yahoo.co.in>
>
> Sent: Thursday, 3 April, 2008 8:32:26 PM
> Subject: Re: [U-Boot-Users] s3c2440 -- serial_init
>
> Is the ethrnet core inside the processor ? (never used the smcx ...)
> Does ping work ? Does the link LED glow when you plug in the LAN cable ?
>
> Vishal
>
> On Thu, Apr 3, 2008 at 7:05 PM, Tiju <tj_jac at yahoo.co.in> wrote:
> >
> > Hi Vishal,
> >
> > Thank You so much for your help. The u-boot is up and running from
> yesterday
> > onwards. :)
> > The network driver doesn't seem to work properly. Trying to figure it out.
> > It says---
> >
> > DPB2440 # tftpboot
> > dm9000 i/o: 0x18000000, id: 0x90000a46
> > MAC: 00:e0:63:0e:56:78
> > could not establish link
> > TFTP from server 192.168.100.6; our IP address is 192.168.100.110
> > Filename 'zImage'.
> > Load address: 0x34000000
> > Loading: T T T #T T T T T T T
> > Retry count exceeded; starting again
> > TFTP from server 192.168..100.6; our IP address is 192.168.100.110
> > Filename 'zImage'.
> > Load address: 0x34000000
> > Loading: T T #T T T T T T T T
> > ....
> >
> > Any idea what the problem is?
> >
> > Regards,
> > Tiju
> >
> >
> > ----- Original Message ----
> > From: Vishal Oliyil Kunnil <vishal.ok at gmail.com>
> > To: Tiju <tj_jac at yahoo.co.in>
> >
> > Sent: Wednesday, 2 April, 2008 11:29:21 AM
> > Subject: Re: [U-Boot-Users] s3c2440 -- serial_init
> >
> > Hi Tiju,
> > You should not write the image to RAM. U-boot should re-locate by itself.
> > What is the debugger that you use ? Try putting a breakpoint at address
> > of start_armboot() -> you can get the address by
> > objdump -S u-boot.elf > u-boot.dump
> > A memory dump should show contents of 0x0 anf 0x31000000 to be same.
> > Also I suggest you use a stable release of u-boot and not U-Boot
> > 1.3.2-00046-g23e20aa-dirty.
> >
> > Regards,
> > -Vishal
> >
> >
> >
> >
> > On Wed, Apr 2, 2008 at 8:58 AM, Tiju <tj_jac at yahoo.co.in> wrote:
> > >
> > > Hi Vishal,
> > >
> > > Thanks for the tips. After I compiling with TEXT_BASE=0x31000000 and
> > > commenting
> > > - CONFIG_SKIP_LOWLEVEL_INIT
> > > - CONFIG_SKIP_RELOCATE_UBOOT it does not work directly. After this I
> just
> > > wrote the same image to the NOR flash as well as the RAM (starting from
> > > 0x31000000) then on the u-boot the following appears.
> > >
> > > U-Boot 1.3.2-00046-g23e20aa-dirty (Apr 1 2008 - 19:33:51)
> > >
> > > DRAM: 64 MB
> > > *** Warning - bad CRC, using default environment
> > >
> > > In: serial
> > > Out: serial
> > > Err: serial
> > > DPB2440 #
> > >
> > > After this it hangs. ie. no input or output.
> > >
> > > I think the initial problem to be taken care of is the relocation and
> then
> > > the serial. How do we go about these issues?
> > >
> > > Thanks in advance.
> > > Tiju
> > >
> > >
> > >
> > >
> > > ----- Original Message ----
> > > From: Vishal Oliyil Kunnil <vishal.ok at gmail.com>
> > > To: Tiju <tj_jac at yahoo.co.in>
> > >
> > > Sent: Monday, 31 March, 2008 6:31:43 PM
> > > Subject: Re: [U-Boot-Users] s3c2440 -- serial_init
> > >
> > > Tiju,
> > >
> > > Read the documentation:
> > > ----- snip - README -----
> > > - CONFIG_SKIP_LOWLEVEL_INIT
> > > - CONFIG_SKIP_RELOCATE_UBOOT
> > > [ARM only] If these variables are defined, then
> > > certain low level initializations (like setting up
> > > the memory controller) are omitted and/or U-Boot does
> > > not relocate itself into RAM.
> > > Normally these variables MUST NOT be defined. The
> > > only exception is when U-Boot is loaded (to RAM) by
> > > some other boot loader or by a debugger which
> > > performs these intializations itself.
> > > ----- snip - README -------
> > >
> > > I suggest you enable the RELOCATE and LOWLEVEL_INIT (by commenting the
> > > defines)
> > > - u-boot AFAIK cannot run lke the XIP kernel off NOR Flash; inspite of
> > > the fact the NOR
> > > flash can be directly read by the processor - unlike NAND. There is no
> > > noticeable performance
> > > hit or wastage of memory if you let u-boot relocate by itself.
> > >
> > > TEXT_BASE=0x31000000 in my opinion is correct.
> > >
> > > After relocating, a dump of flash contents and RAM (TEXT_BASE) contents
> > > should show you the same contents. If it does not - perhaps you have
> > > not configured
> > > the memory controller correctly. This can be verified by checking if
> > > you are able to
> > > write to RAM using the debugger after memory initializations (which is
> > > typically in LOWLEVEL_INIT, which you have skipped - I dont know if
> > > this is so for the s3c2440 ).
> > >
> > > Regards,
> > > Vishal
> > >
> > > On Mon, Mar 31, 2008 at 5:16 PM, Tiju <tj_jac at yahoo.co.in> wrote:
> > > >
> > > > Thanks Vishal.. I compiled with TEXT_BASE=0x31000000 and for
> > start_armboot
> > > > jumps to 0x310004d0 but there are junk values present there.
> > > >
> > > > By default these are enabled:
> > > > #define CONFIG_SKIP_RELOCATE_UBOOT 1
> > > > #define CONFIG_SKIP_LOWLEVEL_INIT 1
> > > > so u-boot does not relocate.
> > > >
> > > > Still now what should the value of TEXT_BASE be? I dont want to
> relocate
> > > > u-boot because from NOR flash byte by byte read can be done.
> > > >
> > > > Regards,
> > > > Tiju
> > > >
> > > >
> > > > ----- Original Message ----
> > > > From: Vishal Oliyil Kunnil <vishal.ok at gmail.com>
> > > > To: Tiju <tj_jac at yahoo.co.in>
> > > >
> > > > Sent: Monday, 31 March, 2008 2:58:12 PM
> > > > Subject: Re: [U-Boot-Users] s3c2440 -- serial_init
> > > >
> > > > TEXT_BASE is the address for which u-boot is linked for.If you take an
> > > > objdump of u-boot
> > > > elf, you will see that it links for address beginning with that
> > > > specified by TEXT_BASE.
> > > > Meaning, you link for the address thus specified.
> > > > Typically the binary will be run from the reset vector of the
> > > > processor, which is not necessarily
> > > > TEXT_BASE : say 0x0 flash address. U-boot starts executing from the
> > > > reset vector,
> > > > relocates to RAM and since it is linked for TEXT_BASE, the ldr pc,
> > > > _start_armboot
> > > > will branch to the start_armboot which is in RAM.
> > > > -------snip - start.S --------------
> > > > ldr pc, _start_armboot
> > > > _start_armboot: .word start_armboot
> > > > -------snip - start.S --------------
> > > > Regards,
> > > > Vishal
> > > >
> > > > On Mon, Mar 31, 2008 at 1:41 PM, Tiju <tj_jac at yahoo.co.in> wrote:
> > > > >
> > > > > Hi Vishal,
> > > > >
> > > > > What does TEXT_BASE mean? Is this the place where the UBOOT gets
> > > > relocated?
> > > > >
> > > > > Thank You,
> > > > > Tiju
> > > > >
> > > > >
> > > > >
> > > > > ----- Original Message ----
> > > > > From: "vishal.ok at gmail.com" <vishal..ok at gmail.com>
> > > > > To: Tiju <tj_jac at yahoo.co.in>
> > > > > Sent: Monday, 31 March, 2008 1:35:47 PM
> > > > > Subject: Re: [U-Boot-Users] s3c2440 -- serial_init
> > > > >
> > > > > Hi Tiju,
> > > > >
> > > > > Try with TEXT_BASE=0x31000000, and leave start.s untouched !
> > > > > I think you have misinterpreted the meaning of TEXT_BASE.
> > > > >
> > > > > Regards,
> > > > > Vishal
> > > > >
> > > > > On 3/31/08, Tiju <tj_jac at yahoo.co.in> wrote:
> > > > > > Hi Michael,
> > > > > >
> > > > > > I have verified all the RAM initializations in
> > > > > > board/smdk2440/lowlevel_init.S and it seems to be fine.
> > > > > > The other changes that I have done are
> > > > > >
> > > > > > 1.. In the board/smdk2440/config.mk file I changed TEXT_BASE =
> > > > 0x33F80000
> > > > > to
> > > > > > TEXT_BASE = 0x00000000 because I am booting from the NOR flash.
> The
> > > NOR
> > > > > > flash address range is 0x00000000 - 0x08000000. The RAM address
> > range
> > > is
> > > > > > 0x30000000 - 0x38000000.
> > > > > >
> > > > > > If I compile it with TEXT_BASE = 0x33F80000 it does not run at
> all!
> > > > > >
> > > > > > 2. When I changed this I found that it has a clash with the stack
> > > > building
> > > > > > in cpu/arm920t/start.S. Therefore I changed it to
> > > > > > ..........
> > > > > > /* Set up the stack */
> > > > > > stack_setup:
> > > > > > /* ldr r0, _TEXT_BASE */ /* upper 128 KiB: relocated uboot */
> > > > > > mov r0, #0x33 /* make stack at 33F8*/
> > > > > > mov r0, r0, lsl #24
> > > > > > mov r1, #0xF8
> > > > > > mov r1, r1, lsl #16
> > > > > > orr r0, r0, r1
> > > > > > ........
> > > > > >
> > > > > > Would these be a problem for the memory initializations?
> > > > > >
> > > > > > Thanks in advance
> > > > > > Tiju
> > > > > >
> > > > > >
> > > > > >
> > > > > > > Hi all
> > > > > > >
> > > > > > > I am trying to port u-boot to a s3c2440 samsung processor.
> > > > > > >
> > > > > > > I applied the smdk2440 boards patch (almost similar
> architecture)
> > > and
> > > > > > > trying to modify it for our board's requirement. But during the
> > > > > > > serial_init it goes to the _serial_putc and then after certain
> > loops
> > > > > > > it goes to the hang function and hangs there.
> > > > > > >
> > > > > > > What could be the problem? Or am I doing some wrong
> > initializations?
> > > > > > >
> > > > > > >
> > > > > > Are you sure that the memory inizializzation is correct?
> > > > > >
> > > > > > Regards Michael
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > 5, 50, 500, 5000 - Store N number of mails in your inbox. Go to
> > > > > >
> http://help.yahoo.com/l/in/yahoo/mail/yahoomail/tools/tools-08.html
> > > > >
> > > > >
> > > > > ________________________________
> > > > > Get your domain and website for less than Rs.100/month*. Click
> here.
> > > >
> > > >
> > > >
> > > > ________________________________
> > > > Get your domain and website for less than Rs.100/month*.. Click here.
> > >
> > >
> > > ________________________________
> > > Bring your gang together - do your thing. Start your group.
> >
> >
> >
> > ________________________________
> > Bring your gang together - do your thing. Start your group.
>
>
>
> ________________________________
> Get your domain and website for less than Rs.100/month*. Click here.
Share files, take polls, and make new friends - all under one roof. Go to http://in.promos.yahoo.com/groups/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.denx.de/pipermail/u-boot/attachments/20080404/24131031/attachment.htm
More information about the U-Boot
mailing list