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Today's Topics:
1. Re: Openmoko Bug #1743: Intenso SDHC 4GB gives glamo errors
(Openmoko Public Trac)
2. Re: Openmoko Bug #1743: Intenso SDHC 4GB gives glamo errors
(Openmoko Public Trac)
3. Re: Openmoko Bug #1743: Intenso SDHC 4GB gives glamo errors
(Openmoko Public Trac)
4. Re: Openmoko Bug #1743: Intenso SDHC 4GB gives glamo errors
(Openmoko Public Trac)
5. Re: Openmoko Bug #1743: Intenso SDHC 4GB gives glamo errors
(Openmoko Public Trac)
6. Re: Openmoko Bug #1743: Intenso SDHC 4GB gives glamo errors
(Openmoko Public Trac)
7. Re: Openmoko Bug #1743: Intenso SDHC 4GB gives glamo errors
(Openmoko Public Trac)
8. Re: Openmoko Bug #1743: Intenso SDHC 4GB gives glamo errors
(Openmoko Public Trac)
--- Begin Message ---
#1743: Intenso SDHC 4GB gives glamo errors
---------------------+------------------------------------------------------
Reporter: beni | Owner: openmoko-devel
Type: defect | Status: new
Priority: normal | Milestone:
Component: unknown | Version:
Severity: normal | Resolution:
Keywords: | Blocking:
Blockedby: |
---------------------+------------------------------------------------------
Comment(by andy):
mmcblk0: mmc0:b368 SD 3931136KiB
mmcblk0:
<6>glamo-mci glamo-mci.0: Error after cmd: 0x8310
This looks like what you would get if we timed out too soon for the card,
ie, the card is slow. The status shows "no data" timeout but also "data
ready".
If you know how to adapt the U-Boot environment, please give this a try
with a slower SD Card clock, from the kernel commandline
glamo_mci.sd_max_clk=10000000
--
Ticket URL: <https://docs.openmoko.org/trac/ticket/1743#comment:2>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac
--- End Message ---
--- Begin Message ---
#1743: Intenso SDHC 4GB gives glamo errors
---------------------+------------------------------------------------------
Reporter: beni | Owner: openmoko-devel
Type: defect | Status: new
Priority: normal | Milestone:
Component: unknown | Version:
Severity: normal | Resolution:
Keywords: | Blocking:
Blockedby: |
---------------------+------------------------------------------------------
Comment(by beni):
i will give this a try, but dont know how to set that setting.
What steps must be performed?
--
Ticket URL: <https://docs.openmoko.org/trac/ticket/1743#comment:3>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac
--- End Message ---
--- Begin Message ---
#1743: Intenso SDHC 4GB gives glamo errors
---------------------+------------------------------------------------------
Reporter: beni | Owner: openmoko-devel
Type: defect | Status: new
Priority: normal | Milestone:
Component: unknown | Version:
Severity: normal | Resolution:
Keywords: | Blocking:
Blockedby: |
---------------------+------------------------------------------------------
Comment(by andy):
You need to edit U-Boot environment, exactly what to do depends on how you
are set up. If you don't have a debug board, you need to use minicom with
/dev/ttyACM0 when in U-Boot.
Once you are in and at the U-Boot prompt, you need to adapt probably
"bootargs" environment var to have glamo_mci.sd_max_clk=10000000 on it
too. Use
printenv
to see the existing settings, then like
setenv bootargs glamo_mci.sd_max_clk=10000000 <original text>
then
boot
to boot. Confirm your setting was seen by the kernel by
cat /proc/cmdline
--
Ticket URL: <https://docs.openmoko.org/trac/ticket/1743#comment:4>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac
--- End Message ---
--- Begin Message ---
#1743: Intenso SDHC 4GB gives glamo errors
---------------------+------------------------------------------------------
Reporter: beni | Owner: openmoko-devel
Type: defect | Status: new
Priority: normal | Milestone:
Component: unknown | Version:
Severity: normal | Resolution:
Keywords: | Blocking:
Blockedby: |
---------------------+------------------------------------------------------
Comment(by andy):
mmcblk0: mmc0:b368 SD 3931136KiB
mmcblk0:
<6>glamo-mci glamo-mci.0: Error after cmd: 0x8310
This looks like what you would get if we timed out too soon for the card,
ie, the card is slow. The status shows "no data" timeout but also "data
ready".
If you know how to adapt the U-Boot environment, please give this a try
with a slower SD Card clock, from the kernel commandline
glamo_mci.sd_max_clk=10000000
--
Ticket URL: <https://docs.openmoko.org/trac/ticket/1743#comment:2>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac
--- End Message ---
--- Begin Message ---
#1743: Intenso SDHC 4GB gives glamo errors
---------------------+------------------------------------------------------
Reporter: beni | Owner: openmoko-devel
Type: defect | Status: new
Priority: normal | Milestone:
Component: unknown | Version:
Severity: normal | Resolution:
Keywords: | Blocking:
Blockedby: |
---------------------+------------------------------------------------------
Comment(by beni):
Ok, thank you very much.
I did the following:
--- USB console ---
GTA02v5 # setenv bootargs glamo_mci.sd_max_clk=10000000 ${bootargs_base}
${mtdparts}; nand read.e 0x32000000 kernel 0x200000; bootm 0x32000000
-------------------
After pressing [ENTER] the freerunner booted.
Checking the commandline from ssh-connect gives:
[EMAIL PROTECTED]:~# cat /proc/cmdline
glamo_mci.sd_max_clk=10000000 rootfstype=jffs2 root=/dev/mtdblock6
console=ttySAC2,115200 console=tty0 loglevel=8 regular_boot mtdparts
=physmap-
flash:-(nor);neo1973-nand:0x00040000(u-boot),0x00040000(u-boot_env),0x00800000(kernel),0x000a0000(splash),0x00040000(factory),0x0f6a0000(rootfs)
The card is then mounted successfully and read-/writable.
Is there something else that can be done.
Performance:
[EMAIL PROTECTED]:~# date +"%s"; dd if=/dev/zero of=/media/card/bigfile
count=200 bs=1M; date +"%s"
1217863771
200+0 records in
200+0 records out
1217863876
=> 1.90 MB/sec
--
Ticket URL: <https://docs.openmoko.org/trac/ticket/1743#comment:5>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac
--- End Message ---
--- Begin Message ---
#1743: Intenso SDHC 4GB gives glamo errors
---------------------+------------------------------------------------------
Reporter: beni | Owner: openmoko-devel
Type: defect | Status: new
Priority: normal | Milestone:
Component: unknown | Version:
Severity: normal | Resolution:
Keywords: | Blocking:
Blockedby: |
---------------------+------------------------------------------------------
Comment(by andy):
Replying to [comment:5 beni]:
> Ok, thank you very much.
> I did the following:
>
> --- USB console ---
> GTA02v5 # setenv bootargs glamo_mci.sd_max_clk=10000000 ${bootargs_base}
${mtdparts}; nand read.e 0x32000000 kernel 0x200000; bootm 0x32000000
Nice work -- one thing though you have to protect the ; with backslash
escaping, and the $ too. That'll be why it booted on pressing enter, it
took the ; as command separator and finished the setenv after the first ;
then did the other commands in order.
If you confirm you have the escaping right, you can use
saveenv
command to store the changed environment in NAND, then you don't need to
do this each boot.
AFAIK slowing the SD CLK is the only way to impact this timeout issue for
the slow cards, because we already max out the timeout allowed by the
Glamo internal register. Since it counts SD Card clocks we can work
around slow absolute card performance by slowing the clock.
--
Ticket URL: <https://docs.openmoko.org/trac/ticket/1743#comment:6>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac
--- End Message ---
--- Begin Message ---
#1743: Intenso SDHC 4GB gives glamo errors
---------------------+------------------------------------------------------
Reporter: beni | Owner: openmoko-devel
Type: defect | Status: new
Priority: normal | Milestone:
Component: unknown | Version:
Severity: normal | Resolution:
Keywords: | Blocking:
Blockedby: |
---------------------+------------------------------------------------------
Comment(by beni):
I added a new menu option to boot with reduced clock, so i am able to
boot with both default and modified state:
----
setenv menu_9 Boot with reduced SD clock: setenv bootargs
glamo_mci.sd_max_clk=10000000 \${bootargs_base} \${mtdparts}\; nand read.e
0x32000000 kernel 0x200000\; bootm 0x32000000
----
This gives:
[EMAIL PROTECTED]:~# cat /proc/cmdline
glamo_mci.sd_max_clk=10000000 rootfstype=jffs2 root=/dev/mtdblock6
console=ttySAC2,115200 console=tty0 loglevel=8 regular_boot mtdparts
=physmap-
flash:-(nor);neo1973-nand:0x00040000(u-boot),0x00040000(u-boot_env),0x00800000(kernel),0x000a0000(splash),0x00040000(factory),0x0f6a0000(rootfs)
Writing speed is:
[EMAIL PROTECTED]:~# date +%s; dd if=/dev/zero of=/media/card/bigfile
count=200 bs=1M; date +%s;
1217866226
200+0 records in
200+0 records out
1217866331
=> 1.904761904761904762
Reading speed is:
[EMAIL PROTECTED]:~# date +%s; dd if=/media/card/bigfile of=/dev/null
count=200 bs=1M; date +%s;
1217866403
200+0 records in
200+0 records out
1217866494
=> 2.197802197802197802
Where did you got the number of 10000000 from?
Other numbers to test?
--
Ticket URL: <https://docs.openmoko.org/trac/ticket/1743#comment:7>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac
--- End Message ---
--- Begin Message ---
#1743: Intenso SDHC 4GB gives glamo errors
---------------------+------------------------------------------------------
Reporter: beni | Owner: openmoko-devel
Type: defect | Status: new
Priority: normal | Milestone:
Component: unknown | Version:
Severity: normal | Resolution:
Keywords: | Blocking:
Blockedby: |
---------------------+------------------------------------------------------
Comment(by andy):
The numbers that are meaningful here are 50MHz divided by some integer.
10MHz is /5 then. The default is 16.6MHz (/3). So you could also try
12500000 (/4).
--
Ticket URL: <https://docs.openmoko.org/trac/ticket/1743#comment:8>
docs.openmoko.org <http://docs.openmoko.org/trac/>
openmoko trac
--- End Message ---
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