[U-Boot] socfpga 2016.05, CV socdk Rev E1, SPL and u-boot fail when booting from QSPI

Marek Vasut marex at denx.de
Mon Jun 20 15:43:31 CEST 2016 

On 06/20/2016 03:22 PM, Christian Didriksson wrote:
> Hi Marek,

Hi,

>> On 06/17/2016 04:39 PM, Christian Didriksson wrote:
>>> Hi Marek,
>>
>> Hi
>>
>>> I applied the two patches you suggested, but got no change in behavior:
>>>
>>> U-Boot SPL 2016.05-ga0bd0e7-dirty (Jun 17 2016 - 16:32:35)
>>> drivers/ddr/altera/sequencer.c: Preparing to start memory calibration
>>> drivers/ddr/altera/sequencer.c: CALIBRATION PASSED
>>> drivers/ddr/altera/sequencer.c: Calibration complete Trying to boot
>>> from SPI
>>>
>>>
>>> U-Boot 2016.05-ga0bd0e7-dirty (Jun 17 2016 - 16:32:35 +0200)
>>>
>>> CPU:   Altera SoCFPGA Platform
>>> FPGA:  Altera Cyclone V, SE/A6 or SX/C6 or ST/D6, version 0x0
>>> BOOT:  QSPI Flash (1.8V)
>>>        Watchdog enabled
>>> I2C:   ready
>>> DRAM:  1 GiB
>>
>> But this looks like U-Boot started for you. So maybe I misunderstood
>> something right from the getgo . The U-Boot starts, but doesn't get past this
>> point after the DRAM report, right ?
>>
> 
> Correct, initially I had an SPL issue that was solved by not entering quad mode.

We don't support quad mode in U-Boot . You mean not entering Quad mode
in Linux ?

>> In which case, edit lib/initcall.c and add "#define DEBUG" on the first line of
>> the file, rebuild u-boot and boot. U-Boot will not produce far more
>> debugging output and you should be able to figure out which of the initcalls
>> was the last one that passed (and thus which one got stuck).
>>
>> Edit common/board_f.c and locate init_sequence_f[] for the list of initcalls.
>> Check u-boot.map to get the symbol addresses in the compiled u-boot. Then
>> compare the output on the console and locate the corresponding initcall
>> which failed.
>>
>> Or share the u-boot (Elf binary) and console output.
>>
>> (and please avoid top-posting)
>>
> 
> 1 GiB
> initcall: 0100ca47
> initcall: 0100c93d
> initcall: 0100c9e3
> initcall: 0100c9bb
> initcall: 3ff62c1b
> initcall: 3ff62add
> initcall: 0100cc4d (relocated to 3ff62c0d)
> 
>  .text.initr_caches
>                 0x000000000100cc4c        0xa common/built-in.o
> 
> board_init_r ==> init_sequence_r ==>
> 
> #ifdef CONFIG_ARM
> 	initr_caches,
> 	/* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
> 	 *	 A temporary mapping of IFC high region is since removed,
> 	 *	 so environmental variables in NOR flash is not availble
> 	 *	 until board_init() is called below to remap IFC to high
> 	 *	 region.
> 	 */
> #endif
> 
> So it seems we have the classic SDRAM memory not 100% correct configured causing problems when enabling the caches.

I have my doubts about this, but you can try regenerating the preloader
headers from latest CV SoCDK GHRD. You'd have to compile the GHRD with
Quartus, then generate the preloader files with bsp-editor and then use
./arch/arm/mach-socfpga/qts-filter.sh to process these generated files
into headers that go into board/altera/cyclone5-socdk/qts/

You can also try defining CONFIG_SYS_ICACHE_OFF and
CONFIG_SYS_DCACHE_OFF to disable caches and see where that gets you.

> But I don't understand why this happens. Dinh can you boot your CV socdk Rev E1 board with 2016.05 SPL?
> 
>>> Best regards,
>>>
>>> Christian
>>>
>>>> On 06/16/2016 12:13 PM, Christian Didriksson wrote:
>>>>> Hi!
>>>>
>>>> Hi,
>>>>
>>>>>> On 06/15/2016 12:06 PM, Christian Didriksson wrote:
>>>>>>> Trying again.
>>>>>>
>>>>>> Hi!
>>>>>>
>>>>>>> I have reverted back to a vanilla u-boot-2016.05, added the
>>>>>>> not-enter-quad-mode patch
>>>>>>
>>>>>> What's this patch ? Can you share it ?
>>>>
>>>> [...]
>>>>
>>>> Thanks
>>>>
>>>>> Some comments:
>>>>>
>>>>> We want to run ECC, but I don't think the SPL supports scrubbing
>>>>> etc. yet so
>>>> I undefined those qts-parameters. Am I right regarding ECC for SDRAM?
>>>>
>>>> I'll delegate this one to Dinh, I never poked into the SRAM ECC stuff.
>>>>
>>>>> I couldn't get the SPL to work from the beginning and after much
>>>> debugging I found that entering quad-mode for the flash is
>>>> problematic in the SPL. At the same time I also found this,
>>>> http://lists.denx.de/pipermail/u- boot/2016-June/256671.html,
>> confirming my findings.
>>>>>
>>>>> I have prepared the u-boot MTD-configuration for our setup.
>>>>>
>>>>> I have added SPL SPI support and configured ENV-parameters and
>>>>> u-boot offset
>>>>>
>>>>> I have also added the boot command we are going to use.
>>>>
>>>> OK
>>>>
>>>>>>> and changed the SPI address where the SPL should load the u-boot
>>>>>>> from
>>>>>>
>>>>>> Can you share this change ?
>>>>>>
>>>>>
>>>>> See above
>>>>>
>>>>>>> and it does not work. My question:
>>>>>>>
>>>>>>> Has anyone else tested SPL/u-boot on an Altera CV socdk Rev E1
>>>>>>> board
>>>>>> recently (like 2016.05)?  U-boot hangs after printing memory size.
>>>>>> Same result using different compilers.
>>>>>>
>>>>>> The rev E1 is the latest SoCDK, I only have rev. C1 . I remember
>>>>>> Dinh
>>>>>> (CCed) did send a patch for the rev. E board , so I assume he did
>>>>>> test it, but those were only pinmux changes and it should be part
>>>>>> of the
>>>>>> v2016.05:
>>>>>>
>>>>>> commit 4baca92001bff3c32a05001a7dc58996623e3ef8
>>>>>> Author: Dinh Nguyen <dinguyen at kernel.org>
>>>>>> Date:   Tue May 10 15:13:59 2016 -0500
>>>>>>
>>>>>>     arm: socfpga: Update iomux and pll for c5 socdk RevE
>>>>>>
>>>>>> Another thing which comes to mind is the change in size of SPL,
>>>>>> that might be worth looking at. Can you check the size of the SPL,
>>>>>> u-boot-spl-
>>>> dtb.bin ?
>>>>>>
>>>>>
>>>>> 54534 bytes
>>>>
>>>> Try these two patches:
>>>> https://patchwork.ozlabs.org/patch/627868/
>>>> https://patchwork.ozlabs.org/patch/627869/
>>>>
>>>>>> I just tested the rev C socdk with 2016.05 and it boots for me. I
>>>>>> will send you the binary I used off-list.
>>>>>>
>>>>>
>>>>> Does this SPL (loaded from QSPI by bootrom?)  load u-boot from QSPI?
>>>>
>>>> I only tested it booting from SD card, but it should just as well
>>>> load from QSPI if the board is configured that way.
>>>>
>>>>>>> Best regards,
>>>>>>>
>>>>>>> Christian
>>>>>>>
>>>>>>> -----Ursprungligt meddelande-----
>>>>>>> Från: U-Boot [mailto:u-boot-bounces at lists.denx.de] För Christian
>>>>>>> Didriksson
>>>>>>> Skickat: den 9 juni 2016 20:15
>>>>>>> Till: u-boot at lists.denx.de
>>>>>>> Ämne: [U-Boot] socfpga 2016.05, CV socdk Rev E1, SPL and u-boot
>>>>>>> fail when booting from QSPI
>>>>>>>
>>>>>>> Hi All,
>>>>>>>
>>>>>>> I have been struggling for quite some time now to get SPL and
>>>>>>> u-boot to
>>>>>> run from QSPI-flash. Yesterday I was able to identify a workaround
>>>>>> to get the SPL going by disabling quad mode for the flash (seems
>>>>>> identified by
>>>>>> http://lists.denx.de/pipermail/u-boot/2016-June/256671.html).
>>>>>> However
>>>>>> u- boot always hangs after printing memory size. I have tried to
>>>>>> search the archive and have seen posts about hanging here, but
>>>>>> nothing I can relate to my setup. I have tested to use Altera's SPL
>>>> (2013.01.01) and u-boot-2016.5 and this combo seems to work.
>>>>>>>
>>>>>>> I also notice that the frequency (max-spi-frequency) in the
>>>>>>> dts-file is not
>>>>>> picked up for some reason?
>>>>>>>
>>>>>>> Any help to fix the u-boot hang problem would be highly appreciated.
>>>>>>>
>>>>>>> Current printout (with added debug output):
>>>>>>>
>>>>>>> U-Boot SPL 2016.05 NGA QSPI -g133f59a-dirty (Jun 09 2016 -
>>>>>>> 17:06:20)
>>>>>>> drivers/ddr/altera/sequencer.c: Preparing to start memory
>>>>>>> calibration
>>>>>>> drivers/ddr/altera/sequencer.c: CALIBRATION PASSED
>>>>>>> drivers/ddr/altera/sequencer.c: Calibration complete Trying to
>>>>>>> boot from SPI
>>>>>>> spl_spi_load_image: bus=0, cs=0, speed=50000000, mode=3
>>>>>>> cadence_spi_ofdata_to_platdata: regbase=ff705000
>> ahbbase=ffa00000
>>>>>>> max-frequency=500000 page-size=256
>>>>>>> spi_flash_std_probe: slave=01100368, cs=0
>>>>>>> SF: Read data capture delay calibrated to 7 (0 - 15)
>>>>>>> cadence_spi_set_speed: speed=100000
>>>>>>> cadence_spi_xfer: len=1 [bytes]
>>>>>>> cadence_spi_xfer: len=5 [bytes]
>>>>>>> SF: Got idcodes
>>>>>>> 00000000: 20 ba 20 10 00                                      . ..
>>>>>>> SF: Detected N25Q512
>>>>>>> cadence_spi_xfer: len=1 [bytes]
>>>>>>> cadence_spi_xfer: len=1 [bytes]
>>>>>>> spi_flash_decode_fdt: Cannot decode address
>>>>>>> cadence_spi_xfer: len=0 [bytes]
>>>>>>> cadence_spi_xfer: len=0 [bytes]
>>>>>>> SF: Detected N25Q512 with page size 256 Bytes, erase size 64 KiB,
>>>>>>> total 64 MiB
>>>>>>> SF: Read data capture delay calibrated to 7 (0 - 15)
>>>>>>> cadence_spi_set_speed: speed=500000
>>>>>>> cadence_spi_xfer: len=5 [bytes]
>>>>>>> cadence_spi_xfer: len=64 [bytes]
>>>>>>> cadence_spi_xfer: len=5 [bytes]
>>>>>>> cadence_spi_xfer: len=443714 [bytes]
>>>>>>>
>>>>>>>
>>>>>>> U-Boot 2016.05 NGA QSPI -g133f59a-dirty (Jun 09 2016 - 17:06:20
>>>>>>> +0200)
>>>>>>>
>>>>>>> CPU:   Altera SoCFPGA Platform
>>>>>>> FPGA:  Altera Cyclone V, SE/A6 or SX/C6 or ST/D6, version 0x0
>>>>>>> BOOT:  QSPI Flash (1.8V)
>>>>>>>        Watchdog enabled
>>>>>>> I2C:   ready
>>>>>>> DRAM:  1 GiB
>>>>>>>
>>>>>>>
>>>>>>> Best regards,
>>>>>>>
>>>>>>> Christian
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> U-Boot mailing list
>>>>>>> U-Boot at lists.denx.de
>>>>>>> http://lists.denx.de/mailman/listinfo/u-boot
>>>>>>> _______________________________________________
>>>>>>> U-Boot mailing list
>>>>>>> U-Boot at lists.denx.de
>>>>>>> http://lists.denx.de/mailman/listinfo/u-boot
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Best regards,
>>>>>> Marek Vasut
>>>>>
>>>>> Best regards,
>>>>>
>>>>> Christian
>>>>>
>>>>
>>>>
>>>> --
>>>> Best regards,
>>>> Marek Vasut
>>
>>
>> --
>> Best regards,
>> Marek Vasut
> 
> Best regards,
> Christian
> 


-- 
Best regards,
Marek Vasut

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