[U-Boot] Newbie SPL question for socfpga_sockit

Thu Mar 3 00:24:54 CET 2016

On 03/03/2016 12:08 AM, Dinh Nguyen wrote:
> On 03/02/2016 04:54 PM, Dinh Nguyen wrote:
>> CC: Marek Vasut
>>
>> On 03/01/2016 08:40 PM, George Broz wrote:
>>> On 17 February 2016 at 18:45, Phil Reid <preid at electromag.com.au> wrote:
>>>> G'day George
>>>>
>>>>
>>>> On 18/02/2016 5:54 AM, George Broz wrote:
>>>>>
>>>>> Hello,
>>>>>
>>>>> Sorry for the newbie question...
>>>>>
>>>>> I have an Altera/Terasic board (socfpga_sockit) that has issues
>>>>> recognizing
>>>>> USB storage devices (roughly 60% good / 40% bad):
>>>>>
>>>
>>>>> If I try a later release (e.g. v2016.01 which seems to support the Terasic
>>>>> board explicitly) the boot process stops just after loading the SPL.
>>>>>
>>>>> At this point I have only been changing the u-boot.img component, not the
>>>>> SPL (in the a2 partition of the MMC).
>>>>>
>>>>> The documentation from Altera about generating the SPL seems to require
>>>>> using Qsys/Quartus tools which I'd really like to avoid.
>>>>>
>>>>> I can produce u-boot-spl.bin / u-boot.img from
>>>>> make socfpga_sockit_defconfig; make all.
>>>>>
>>>>> My newbie question ... should be I able to use directly the u-boot-spl.bin
>>>>> generated by the build to replace the SPL on the board?
>>>>>
>>>>
>>>> I've just gone thru the process (this week) of getting uboot 2016.01 to boot
>>>> on our custom socfpga board.
>>>> There where a few issues in getting things going.
>>>> If your using the sd card to boot then the current memory layout is not per
>>>> the altera documentation.
>>>> I had to make the changes below to config to match the altera docs.
>>>> Otherwise it hangs just after the SPL.
>>>> You also need to use the -dtb image versions with 2016.01 for things to
>>>> work.
>>>> Again you may need to make sure the uboot device trees match your hardware.
>>>> Not all uboot drivers appear to be using the DT as yet.
>>>>
>>>> Note the SPL is tightly coupled to the board design and potentially the FPGA
>>>> image.
>>>> If you using bridges or routing HPS resources (eg i2c etc) to the fpga the
>>>> SPL configures the muxes.
>>>>
>>>> There's a script in uboot src at arch\arm\mach-socfpga\qts-filter.sh
>>>> That will generate the qts files for you arch.
>>>>
>>>> I haven't tried the USB stuff as yet.
>>>> There are some issues witht eh altera USB port trigger an Over Current event
>>>> on device insertation.
>>>> They've modified the linux kenerl driver to use external OV current
>>>> detection to get around the problem.
>>>> My intial workaround was to insert USB device prior to power on.
>>>> I haven't looked at the uboot USB driver yet to see what's in there.
>>>>
>>>>
>>>> --
>>>> Regards
>>>> Phil Reid
>>>>
>>>>
>>>> diff --git a/include/configs/socfpga_common.h
>>>> b/include/configs/socfpga_common.h
>>>> index a09e906..3a1b59b 100644 (file)
>>>> --- a/include/configs/socfpga_common.h
>>>> +++ b/include/configs/socfpga_common.h
>>>> @@ -357,13 +357,13 @@ unsigned int cm_get_qspi_controller_clk_hz(void);
>>>>
>>>> /* SPL SDMMC boot support */
>>>> #ifdef CONFIG_SPL_MMC_SUPPORT
>>>> +#define CONFIG_SPL_LIBDISK_SUPPORT
>>>> #if defined(CONFIG_SPL_FAT_SUPPORT) || defined(CONFIG_SPL_EXT_SUPPORT)
>>>> #define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION 2
>>>> #define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME "u-boot-dtb.img"
>>>> -#define CONFIG_SPL_LIBDISK_SUPPORT
>>>> #else
>>>> -#define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION 3
>>>> -#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0xa00 /* offset 2560 sect
>>>> (1M+256k) */
>>>> +#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION 3
>>>> +#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0x200
>>>> #define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS 800 /* 400 KB */
>>>> #endif
>>>> #endif
>>>>
>>>>
>>>
>>> Thanks, Phil!
>>>
>>> Sorry for the delayed response - got called away, but am back to this
>>> now. I patched
>>> socfpga_common.h and re-built the project. I picked up
>>> spl/u-boot-spl-dtb.sfp and
>>> u-boot-dtb.img and transferred them to the SD card with:
>>>
>>> dd if=u-boot-spl-dtb.sfp of=/dev/sdf3 bs=64k seek=0
>>> dd if=u-boot-dtb.img of=/dev/sdf3 bs=64k seek=4
>>>
>>
>> You can just do a 'make u-boot-with-spl.sfp' and burn the
>> u-boot-with-spl.sfp file straight to the a2 partition, or sdf3.
>>
>>> Tried this with both the original DT set (socfpga.dtsi, socfpga_cyclone.dtsi,
>>> socfpga_cyclone5_sockit.dts) that came with the u-boot v2016.01 download and
>>> also an Altera-patched DT set that I've used to boot into Linux numerous times.
>>>
>>> When I start up the board I get:
>>>
>>> U-Boot SPL 2016.01 (Mar 01 2016 - 17:28:14)
>>> drivers/ddr/altera/sequencer.c: Preparing to start memory calibration
>>> drivers/ddr/altera/sequencer.c: CALIBRATION FAILED
>>> drivers/ddr/altera/sequencer.c: Calibration complete
>>> SDRAM calibration failed.
>>> ### ERROR ### Please RESET the board ###
>>>
>>> I'm not a Quartus user, so I haven't done anything with the
>>> qts-filter.sh script you
>>> mentioned. Do I need to? I don't have any custom FPGA logic - it's
>>> just the Terasic
>>> board out of the box.
>>>
>>
>> I just tested U-Boot(v2016.03-rc3) and USB is not working on the devkit
>> or sockit. It's failing to detect my mass storage device.
>>
>> Debugging...
>>
> 
> Sorry, I mis-spoke for the sockit. I have to turn dcache off for USB to
> work reliably.
> 
> => dcache off
> => usb start
> starting USB...
> USB0:   Core Release: 2.93a
> scanning bus 0 for devices... 2 USB Device(s) found
> => usb tree
> USB device tree:
>   1  Hub (480 Mb/s, 0mA)
>   |   U-Boot Root Hub
>   |
>   +-2  Mass Storage (480 Mb/s, 200mA)
>        SanDisk Firebird USB Flash Drive 4C532000040115111005
> 
> => version
> 
> U-Boot 2016.03-rc3 (Mar 02 2016 - 17:00:25 -0600)

Well, that's our usual USB/QSPI cache issue that's tormenting your soul.
CCing Chin ;-)

Does the issue by any chance magically disappear if you apply this patch:

diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index 026e7ef..06802c6 100644
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -274,7 +274,7 @@ static inline void set_dacr(unsigned int val)

 /* options available for data cache on each page */
 enum dcache_option {
-       DCACHE_OFF = TTB_SECT_DOMAIN(0) | TTB_SECT_XN_MASK | TTB_SECT,
+       DCACHE_OFF = TTB_SECT_S_MASK | TTB_SECT_DOMAIN(0) |
TTB_SECT_XN_MASK | TTB_SECT,
        DCACHE_WRITETHROUGH = DCACHE_OFF | TTB_SECT_C_MASK,
        DCACHE_WRITEBACK = DCACHE_WRITETHROUGH | TTB_SECT_B_MASK,
        DCACHE_WRITEALLOC = DCACHE_WRITEBACK | TTB_SECT_TEX(1),

?

-- 
Best regards,
Marek Vasut
