Hi,
Looks like there is a huge performance issue with the sdhc
hardware/software driver on the mx31
Earlier on i had adapated the freescale mx sdhc driver and ported it
to the mx31 platform for U-boot v1.0. I have modified the driver to
put the host as well as the card in 4 bit mode in the
Hi all,
Has any one written a u-boot sdhc driver which supports high-capcity
cards ? I am trying to implement a SD high capacity driver but looks
like you need to implement the protocol (SD CMDs ) a bit differently.
Based on the specs i am not sure if my changes will be backward
compatible to
Hi all,
I have basically adapted the linux esdhc driver for the mx35 for
uboot. I am using the mmc_init routine in fsl_esdhc driver for the
initialization sequence including the IDentification cycle for the
card.
The issue is that i have a particular card from vendor Kingston
which works rock
Hi,
Has anyone tried playing with the hardware i2c on the mx27 platform
using u-boot. I am trying to enable the second controller and use
hardware i2c by doing memory writes to the appropiate registers using
mw.
Looks like i am missing out on some register values. I am unable to
toggle the
On Mon, Nov 16, 2009 at 8:59 PM, Ben Warren biggerbadder...@gmail.com wrote:
Hi Alfred,
alfred steele wrote:
Thanks for your submission!
What is the current design on the mxc fec interface's attainment of a
MAC address. From the kernel driver it looks like it looks at the
IIM(IC
Thanks for your submission!
What is the current design on the mxc fec interface's attainment of a
MAC address. From the kernel driver it looks like it looks at the
IIM(IC identification registers) on the MXC platform(like mx51/35) to
look for a programmed mac address and then the set the fec mac
Hi Magnus,
Thanks.
Are you using U-boot v2 or some other customized U-boot? (gitweb at
git.denx.de seems to have some problems at the moment and I don't have
the U-boot v2 tree locally)
Custom u-boot based on v2.
I have ported mxc_nand based on the kernel code(2.6.26) and it uses
2k/4k
So is it possible to completly disable the relocation process at startup and
run U-Boot with having opcode in PROM and data in RAM? If yes, how could I
achieve this?
I already tried to remove the corresponding code in the start.S and searched
the README for switches, but without success.
Hi,
I am a rookie as far as NAND boot debugging is concerned. I have
remote gdb working just fine. I wish to single step from the point the
macro for nand load starts(assembly code). (nand_load).
To do that, i set a instruction breakpoint on BDI3000 using the BI
command. looks like the cpu
Hi All,
I am trying to introduce a Samsung NAND flash part (K9F8G08U0M) to a
Freescale mxc platform. Looks like the device code used in the NAND
read id operation is already a part of the
drivers/mtd/nand/nand_ids.c, looking at line {NAND 1GiB 3,3V 8-bit,
0xD3, 0, 1024, 0, LP_OPTIONS},) Its
Thanks Magnus!
Which MXC platform are you using and does it support 4K page size? And
does mxc_nand.c support 4K page size?
I am using mx35 and the NAND flash controller therein supports 4K page
operations as evident from the manual.
from the code in mxc_nand.c it looks like it checks for
Hi All,
I am trying to introduce a Samsung NAND flash part (K9F8G08U0M) to a
Freescale mxc platform. Looks like the device code used in the NAND
read id operation is already a part of the
drivers/mtd/nand/nand_ids.c, looking at line {NAND 1GiB 3,3V 8-bit,
0xD3, 0, 1024, 0, LP_OPTIONS},) Its
Hi all,
What is the general boot sequence for u-boot. IIRC, its the cpu
specific start followed by board specfic stuff, then general init
stuff (like misc_init_f) and then the common stuff.
The reason i am asking this i want to inject my own boot path based on
the presence of certain boot
Hi,
I am trying to modify uboot to use the available FAT32 APIs and the
mmc driver apis in order to auto magically boot from a SD card if its
present in the slot of our board.
I know it can be done by statically defining EXTRA_ENVS in the board
config file and use the U-boot scripting framwork to
Hi all,
How do i go about the SDRAM/DDR initialization on my board. IS the
function partitoned or is it just done in a single place.
I would think that board specifc dram_init is just a generic
function. There has to be a specific place where the SDRAM controller
is told about the DRR/SDRAM.
Is
Hi All,
When i use 128M in my board configuration and pass the same to he
kernel using bd_info , the linux kernel just boots up fine. But when
i change the config to put 256M which is the actual physical DDR size
on our board,
the userspace crashes because of a unhandled page fault via
Hi All,
What does the CONFIG_JFFS2_NAND do? Looks like its being used in
common/cmd_jffs2.c for some erase block specific validation. I am not
sure on that.
Can anyone help explain?
Thanks in advance.
-Alfred
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That controls whether the jffs2 command supports NAND.
Iis it a MUST HAVE if you are using a jffs2 root filesystem? I mean do
i have to turn on CONFIG_JFFS2_NAND if i have a jff2 rootfs.
Are there any other configuration flags i need to turn on for JFFS2 support?
Thanks,
Alfred.
Hi,
We are thinking of migrating to a 256M chip on the MX31 3stack based
board. WHich all config variables have to be changed apart from
SDRAM_SIZE and no of banks(CSD0)?
Thanks,
Alfred.
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Hi All,
I have been using the nand erase.e command with favourable results
till now. I was enticed by the CONFIG_JFFS2_NAND option in the
platform config. When i turn this config option on and use the NAND.
write.jffs2 , and use the resulting image, i get abnormal results
including a kernel
Just realised that i dis reply instead of reply all.
We have been using 2009.1 based version.. We have been using nand
read.e/write.e. Is that fine? After skimming through the u-boot code,
it seems though.
Please confirm.
Apart from this, what does the CONFIG_JFFS2_NAND do?
Thanks, Alfred.
Either U-Boot does not perform a real processor reset on your
platform, and/or your system does not really reset all peripherals.
The issue of a reboot command sure is just a processor reset , it does
not reset the peripherals including the NAND i guess.
Could it be a problem with the NAND boot
Dear Wolfgang
Either U-Boot does not perform a real processor reset on your
platform, and/or your system does not really reset all peripherals.
THe issue of a reboot command sure is just a processor reset , it does
not reset the peripherals including the NAND i guess.
Could it be a problem with
Hi All,
When i do a soft reset or issue a reboot command from linux, uboot is
unable to boot,getting stuck .
Uncompressing Linux.
... done, booting the kernel.
But on a power cycle, U-boot
Hi all,
I have been building/using u-boot for uite some time now. I never had
issues with it. Now, I am trying to use a versioning system to store a
version of u-boot and then check out a fresh version from the
repository on a different workspace and trying to compile it.
I get the following
Hi all,
I have been building/using u-boot for uite some time now. I never had
issues with it. Now, I am trying to use a versioning system to store a
version of u-boot and then check out a fresh version from the
repository on a different workspace and trying to compile it.
I get the
Hi Ilya,
This is a port of Linux driver for SDHC host controller hardware
found on Freescale's MX2 and MX3 processors. Uses new generic MMC
framework (CONFIG_GENERIC_MMC) and it looks like there are some
problems with a framework (at least on LE cpus). Some of these
problems are addressed in
We have support for the MX35-3-Stack, you might want to have a look at
that code if you are working into that direction.
Where can i find the MX35-3-Stack patches? Does it support boot from
NAND and does it have the NAND flash driver already?
Thanks,
Alfred
Where can i find the MX35-3-Stack patches? Does it support boot from
NAND and does it have the NAND flash driver already?
Are you talking about this in the GIT?
Hi Ilya/Fabio,
I followed your guidelines for trying to use the MX27 SDHC driver/MMC
framework as the base code and make appropiate mods to make it work
on the MX31 PDK board but i have been unsuccessful till this point. i
had left this task off at a point because of higher priorities.
Do you
Hi Magnus/all,
I believe that AVIC has to be initialized for the MX31 PDK for
getting any peripheral based interrupt to work. I did not find any
instance of it in the latest MX31 PDK patch, or am i missing anything.
If we are assuming that this responsibility gets transferred to the
kernel,
Hi,
I have a requirement fro initializing the GPIO pin for interrupt on
a custom FPGA on the MX31 board. Where should i add this code in the
uboot tree.
Thanks in advance!
-Alfred.
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Hi Magnus/all,
Where does the mmu_init code in the uboot code for mx31 pdk reside?
I am looking for things with MMU initialization like setting the
actual base, virtual base and the TLB settings.
Can anyone throw light on the same?Thanks in advance!!
-Munro.
The MMU is not used in ARM/U-boot, at least not on the i.MX31.
I was thinking there has to be a mechnism which defines the
phystovirtual mapping table before the kernel starts running in the
virtual space and the IO peripherals to access memory space/registers.
Redboot does the same, hence i
Hi,
The processor clock on the board i am using is to 532Mhz. I want to
default it to 400(399) Mhz. I tried tweaking values in
include/configs/boardname.h file but with little success.
How do i change the frequency to 399 through the uboot code?
Thanks,
Alfred.
Hi All,
I am trying to clone the configuration of a board already exiting in
U-boot in an effort to port u-boot to this board.
I changed the following files
Makefile - To copy the config rule for the corresponding board.
created a directory for the new board in the board directory and
copied
Hi Ilya,
Just make sure that you have all needed clocks enabled.
Thanks!One thing i forgot mentioning is that when i had adopted your
patch on my baseline code, i started getting the infamous 'u64 ' (64
bit) division LINK errors while compiling with EABI rooting out of the
clock based
Thanks for the much waited reply.
I've only tried my patch on i.MX27 board. I mentioned that it may work
on MX3's too cause the kernel driver used as a source works on both MX2
and MX3. You need to do some changes for my driver to work on MX3. Check
the pins configuration and if you have MCI
Looks like accidently somehow pressed the send button. Apologize!
Thanks for the much awaited reply.
I've only tried my patch on i.MX27 board. I mentioned that it may work
on MX3's too cause the kernel driver used as a source works on both MX2
and MX3. You need to do some changes for my
Hi,
my English is not perfect really... but I'm actually having hard times
trying to understand yours... So I give you my excuses in advance for
possible misunderstandings...
IMO too, I know i have a horrible English . Trying to improve;) Pls
dont hesitate in asking em to rephrase.
I believe
On Wed, May 6, 2009 at 1:30 PM, Ilya Yanok ya...@emcraft.com wrote:
This is a port of Linux driver for SDHC host controller hardware
found on Freescale's MX2 and MX3 processors.
Would this work asis on the MX31 uboot.
I tried making the code work on the MX31 with minor mods ( on some
registers).
Looks like you are reinitializing the DDR , when u are already executing
from it, you may want to comment out that code, which initializes DDR.
To add to that, if you have cloned code for an already existing
platform config file, See if the CONFIG_SKIP_RELOCATE_UBOOT and
HI Ilya,
This is a port of Linux driver for SDHC host controller hardware
found on Freescale's MX2 and MX3 processors. Uses new generic MMC
framework (CONFIG_GENERIC_MMC) and it looks like there are some
problems with a framework (at least on LE cpus). Some of these
problems are addressed in
Hi Magnus,
uImage to. Itried 0x8100 and 0x80008000 and i am still unable
to load the kernel off u-boot.?
Thanks for all the help! I have got linux booting from u-boot. So
it had something to do with one of the device drivers
Doing a post mortem on the printk log buffer pointed me to the
All,
How do i get a snapshot of commit
dfc91c33957c95da34e3888dc87912d5c15a7603 from the GIT web. I tried
clicking on tree after putting the commit no in the text box but the
commit tarball i got wasn't the one i intended to.
Thanks for your help
-Alfred.
Hi Magnus,
I tend to load my kernels to 0x8100 and not 0x80008000 but I don't
know if that really matters. Other than that I think 'run bootcmd_net'
should work.
Oops i realized i top posted:( I am re-posting again.
i checked in the kernel code
Yes, those values are correct. The boot_params address is also in
arch/arm/mach-mx3/mx31pdk.c (mx3_3stack.c if you use Freescale's BSP).
Where do i get the latest version of Freescale BSP? i know this is not
the correct forum...but still
Thanks,
Alfred
(Click on IMX31_PDK_14_LINUX_BSP_R14 )
Thanks Fabio. Do you know what the load address and entry point for
creating a uImage are for the mx31 pdk board and where to load the
uImage to. Itried 0x8100 and 0x80008000 and i am still unable
to load the kernel off u-boot.?
Best Regards,
Alfred
Hi Magnus,
If U-boot had full NAND support for i.MX31, NAND would be detected
somewhere between steps 7 and 8.
Thanks for the elaborate explanation. I did not find any detailed
documentation for the same in the u-boot readme's.
See my explanation above. CONFIG_SKIP* is defined when compiling
Hi Magnus,
I need more time to post the patches since I'm taking care of some
comments that were posted to Maxim's patches (which I'm using as a
base).
That's fine.
Which linker script gets actually used for the layout in in case of
nand_spl. Is it u-boot-nand.lds or u-boot.lds.?
Thanks.
Hi
That's fine.
Which linker script gets actually used for the layout in in case of
nand_spl. Is it u-boot-nand.lds or u-boot.lds.?
I am going back to the original intent of this thread, booting off the
linux kernel using TFTP. Here's is a dump of my U-boot env. Does
it look good enough
Hi Magnus,
Thanks.
If it comes that far it looks like a lot is working. Don't know why
the rest isn't though.
At this point, it should be showing up the processor info. I am using
a custom board with a different flash part. Samsung(KR series), and i
guess it is part of nand_id table as i have
Hi Magnus,
The mainline u-boot + my patches from early April does not contain any
driver for the i.MX31 NAND flash controller so that can't autodetect
any flash part at all.
How does it boot out of NAND then? I am getting confused. By
detection, i meant the basic init of the NFC and the
Hi Magnus,
Thanks!
Here's a 'snapshot' function in git-web
(http://git.denx.de/?p=u-boot.git;a=tree) which will produce a tarball
of the current tree.
Before that, i actually managed to git clone to a windows machine(at
my home) and export the u-boot tarball to my office linux host where
its
Hi Magnus and all,
Should i do a mx31pdk_nand_config instead of the regular
mx31pdk_config to get the nand boot working on the PDK board.
I can make that out from the lowlevel_init.S code, but i am not
completely sure though.
Thanks.
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Hi Magnus,
No, but it seems that the problem is in the patched Makefile since it
says mx31ads_config instead of mx31_pdk_config.
I tried this on all the RULES as i was getting the same results for
the rule mx31_pdk_config. Apologize for for posting the wrong one.
This problem got resolved when
Hi Magnus,
So , in order to boot out of NAND, all i need to do is use the image
generated out mx31pdk_nand_config instead of the regular
mx31_pdk_config. Right?
Another thing which confuses me is the file nand_boot_mx31.c . Is it
a symbolik link which points to the genric nand_boot.c or is it
Hi Magnus,
Thanks again!
The nand_spl/nand_boot_mx31.c is a regular file if that's the one you mean.
The reason i am asking is I am getting a build error related to this
file after i apply your patches. When i do a ll(ls -l) on the file, i
get
$ll
Dear Magnus,
Yes, that's the latest one I've posted (I've done minor updates
locally but haven't tested those yet).
I guess that's there are two patches for NAND_SPL, one which just adds
the SPL framework and the other which creates the mx31pdk_nand.c and
changes to start.S.
Please correct me
Or you suggest sticking to the latest and greatest mainline.
Alternatively, will use the .rej to generate the new lot of patches.
That seems the best route.
Thanks.
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Hi Magnus,
I just applied the patch series to the current u-boot tip and the only
problem was the top Makefile but that was easy to fix. No warnings
from start.S.
I was able to build successfully after hand editing some of the hunks
in start.S. Even after using the commit snapshot you had
Hi Alessandro,
Thanks!
#define CONFIG_SYS_MEMTEST_START 0 /* memtest works on */
#define CONFIG_SYS_MEMTEST_END 0x1
So, is the config file wrong?
So, most likely memtest without arguments has never been used on the
board.
Is it the cause for the hang, then? I thought it
I think the first step would be to get MX31PDK into mainline U-boot. Are you
willing to help on that?
Of course, as long as i have it up and running and tested on my
hardware. But in order to do that, i would need your help in answering
my earlier question.
Thanks for your help!
-Alfred.
Dear Magnus,
Thanks for the reply!
And we need to know which U-boot patches you're using to boot the PDK
board.
I am using the internal git tree code supplied to me by freescale. The
tarball is called uboot-imx-imx_v2009.01.tar.gz. I can boot uboot
out of NAND successfully using that as the
Hi All.
When i do a memtest without any args, it crashes after printing the
first line. I know the output may vary depending on the processor and
the memmap.
I just wanted to knoe is this tha appropiate behaviour for mtest.
CPU: Freescale i.MX31 at 531 MHz
Board: MX31 3Stack
DRAM: 128 MB
the kernel. My
bootup sequence too hangs after Uncompressing kernel...done booting
the kernel.
Thanks.
On Fri, Apr 24, 2009 at 1:23 PM, Fabio Estevam fabioeste...@yahoo.com wrote:
Hi Alfred,
--- On Thu, 4/23/09, alfred steele alfred.jaq...@gmail.com wrote:
I have attached the printk circular
Dear Wolfgang,
You top post.
You full quote.
Sincere Apologies. I better watch out before i hit the send button.
Best Regards.
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Hi,
I am using uboot on the MX31 PDk board. I am trying to dump the
contents of a status register found at location 50004004. This status
register shows the status of the SDHC( SD card host controller) like
interrupt , card insertion, card removal etc. According to the MX31
manual, the status
Hi,
I am trying to debug u-boot using arm-elf-gdb on the PDK board. I have been
succesfully using this gdb to a great extent. However, when i try my
vanilla u-boot image with debug, i get a segfault.
$ arm-elf-gdb u-boot
GNU gdb 5.3 (eCosCentric)
Copyright 2002 Free Software Foundation, Inc.
GDB
Hi,
I am using an uImage generated by LTIB . I am not sure how the ideal
uImage is generated for the PDK board.
I try booting this uimage from RAM and then load it at 80008000.
It gets stuck after done, booting the kernel. Please see the bootup
messages below.
Any hints? I hope with,
the point it hangs? I am using PDK
which actually limits me to change boot switches for booting it from
NAND or RAM.
On Thu, Apr 23, 2009 at 11:05 AM, Wolfgang Denk w...@denx.de wrote:
Dear alfred steele,
In message 528f13590904230720n14e87cchb87505c1de085...@mail.gmail.com you
wrote:
I am
Hi Wolfgang,
Thanks for the inputs.
So what you are saying that we have eliminated all cases of the
bootloader being at fault here except for the mach id mismatch.?? How
do i verify the mach id mismatch. Is it the same id i see on a
bdinfo dump on uboot. I looked at
Hi All,
I am using mx31 pdk and uImage generated by LTIB.
Basically, my problem is my kernel gets stuck after printing the
Done...Booting the kernel. Please the responses below.
Upon inspecting the printk log by doing a memory dump of the _buf_log
symbol in System.map(i translated it to the
Hi Magnus,
The uboot pacth you had supplied earlier for the MX31 PDK does not
include the mmc driver.
I have asked for a candidate port for me to give a headstart for the
sdhc/mmc infrastructure on the MX31 PDK board. In fact, it seems that
none of the MX31 based boards support MMC/SDHC.
I
:
2009/4/13 alfred steele alfred.jaq...@gmail.com:
Hi Magnus,
For that matter, I can dump memory between 0x and 0x0100
though. However memory dump at 0x10 also fails.
Can you point out which pages in the Reference manual point to the same?
Chapter 2-1 Memory map. in MCIMX31RM
Thanks. Apologies for top posting.
-Alfred.
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Hi,
Is there an available driver for MMC/SD for the mx31 pdk board. If
not, what would be the closest candidate for porting it over.
Thanks.
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:
Hi
2009/4/9 alfred steele alfred.jaq...@gmail.com:
Hi all,
I started with trying to tftpload uImage to RAM address 0x1.
It was getting stuck. Hence i thought of doing a memory dump on it.
md 0x1
It too crashed or got stuck.
But when i do a md 0x8001, it works.
I checked my
Hi all,
I started with trying to tftpload uImage to RAM address 0x1.
It was getting stuck. Hence i thought of doing a memory dump on it.
md 0x1
It too crashed or got stuck.
But when i do a md 0x8001, it works.
I checked my linker script to double check on the memory layout.
What
Hi,
Is there a way to access a SD/MMC card from uboot using the FAT32
file system on the mx31 3stack/pdk board. In other words, does it
have the minimal SDHC driver support . FAT32, i guess, has been an
integral part of the uboot mainline since quite some time.
Thanks,
Alfred.
Hi,
There is a file cpu/arm1136/mx31/nand_load.S which performs some
startup functions for Copy image from flash to SDRAM etc..It does not
reinitialize the DDR though.
Although i haven't dugged up the details yet, could someone tell me
what is the difference between nand_boot.c and
Hi Magnus,
Thanks for the response:)
Until yesterday you were correct. I spent some time updating the
published patches to the current u-boot and the status now is that I
was able to compile the stuff. Haven't tried it on a PDK board yet but
I'm hoping to do that in a couple of days.
I will
Hi:
Was going through the patch for uboot posted earlier this year and the
related review comments here:
http://www.mail-archive.com/u-boot@lists.denx.de/msg01140.html. Looks
like the NAND boot for MX31 PDK is not ready yet.
I was told that if that the mx31 phycore patch should work just fine
some light on it or point me to
some relevant documentation.
Thanks in advance!
On Mon, Mar 30, 2009 at 8:21 PM, alfred steele alfred.jaq...@gmail.com wrote:
Hi Scott:
Thanks!
I am also wondering if there is a include file which builds up a table
of working NAND devices and thier attributes
,
Munro.
On Tue, Mar 31, 2009 at 12:20 PM, Scott Wood scottw...@freescale.com wrote:
alfred steele wrote:
Hi Scott:
Thanks!
I am also wondering if there is a include file which builds up a table
of working NAND devices and thier attributes which tells the U-boot on
the parameters about
.
On Tue, Mar 31, 2009 at 12:20 PM, Scott Wood scottw...@freescale.com wrote:
alfred steele wrote:
Hi Scott:
Thanks!
I am also wondering if there is a include file which builds up a table
of working NAND devices and thier attributes which tells the U-boot on
the parameters about a particular
the exact pagesize as in the data sheet for the
other parts in include/linux/mtd/nand_ids.h. Do you know what to look
for in the data sheet .
On Tue, Mar 31, 2009 at 2:10 PM, alfred steele alfred.jaq...@gmail.com wrote:
Hi Scott,
Thanks!
The only requirement i have currently is to be able
this while and what's driving us
to move to U-boot is the available ability to be able to boot Linux
off the SD card on the MX31 platform.
Regards,
Alfred.
On Fri, Mar 27, 2009 at 3:01 PM, Magnus Lilja lilja.mag...@gmail.com wrote:
2009/3/27 alfred steele alfred.jaq...@gmail.com:
Thanks Magnus
Hi Scott:
Thanks!
I am also wondering if there is a include file which builds up a table
of working NAND devices and thier attributes which tells the U-boot on
the parameters about a particular NAND device on the board like
Block_size , page_size, device size, pages per block, device id etc.
Hi All;
Is there an available port for IMX31 3stack with NAND boot.
I am looking for a U-boot port for IMX31 stack( which supports NAND boot.
The closest matches i know of as of now are as follows:
MX-31 ADS
MX-31 Phycore
Openmoko U-boot (Samsung processor though ARM) - This is the only one
Hi All;
Is there an available port for IMX31 3stack with NAND boot.
I am looking for a U-boot port for IMX31 stack( which supports NAND boot.
The closest matches i know of as of now are as follows:
MX-31 ADS
MX-31 Phycore
Openmoko U-boot (Samsung processor though ARM) - This is the only one
:52 PM, Magnus Lilja lilja.mag...@gmail.com wrote:
Hi
2009/3/27 alfred steele alfred.jaq...@gmail.com:
Hi All;
Is there an available port for IMX31 3stack with NAND boot.
I am looking for a U-boot port for IMX31 stack( which supports NAND boot.
The closest matches i know of as of now
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