Re: Getting serial console output on new imx7d tqma7 board UART4

[Lars Pedersen <lapeddk@gmail.com>]

Hi. I got both the EVK and our TQMa7d board working with using the
full imx_v7_defconfig! So that's progress :)

See my inline comments

/Lars Pedersen.

On Wed, 5 Aug 2020 at 10:49, Ahmad Fatoum <a.fatoum@pengutronix.de> wrote:
>
> Hello Lars,
>
> On 8/4/20 9:21 PM, Lars Pedersen wrote:
> > On Tue, 4 Aug 2020 at 18:15, Ahmad Fatoum <a.fatoum@pengutronix.de> wrote:
> >>
> >> Hello Lars,
> >>
> >> On 8/4/20 3:07 PM, Lars Pedersen wrote:
> >>> I just go an MCIMX7SABRE board and it now trying to start barebox from
> >>> the external SD card, which I guess should be possible right?
> >>>
> >>> I have taken barebox 2020.07.0 and copied the imx_v7_defconfig and
> >>> deselected all boards except the "NXP i.MX7 SabreSD board"
> >>>
> >>> After compilation i copy the image using:
> >>>
> >>> sudo dd if=barebox-freescale-mx7-sabresd.img of=/dev/sdb bs=1024 skip=1 seek=1
> >>> sync>
> >>> But still no boot screen for that either. :/
> >>>
> >>> Shouldn't this work out of the box??
> >>
> >> Works for me.
> >>
> >> imx_v7_defconfig
> >> OSELAS.Toolchain-2019.09.1
> >> Image written to SD card (offset 0) and booted from.
> >
> > I'm using 2019.09.1 toolchain too. When you are saying "offset 0" is
> > that the same as nuking the MBR on the sd card? Like the following?
> > sudo dd if=barebox-freescale-mx7-sabresd.img of=/dev/sdb bs=1024
>
> Yes, that's what I did (or rather labgrid write-image did for me)
>
> > Okay I think that I have found the issue:
> > If are buldiing all the boards selected by the imx_v7_defconfig I get
> > an much bigger image size:
>
> That's expected. multi-image means that barebox is built to support
> multiple boards and multiple images are generated, one for each board.
>
> These images share the same main barebox, but each have a different
> pre-bootloader (and device tree). Only the board code and drivers
> matching the device tree are executed. The rest should remain
> unused by your board.
>
> To make sure this does work as intended, I just built barebox with
> only barebox-freescale-mx7-sabresd.img selected and it works fine for me:
>

What's the size of that image? I just retested and I can't get it
working when only the sabresd board is selected for compilation.

>   barebox 2020.07.0 #58 Wed Aug 5 10:46:00 CEST 2020
>
> >
> > All boards selected (657570 bytes)
> > [DOCKER][developer@25071f8c717f ptxdist]$ ll
> > platform-tqma7/images/barebox-freescale-mx7-sabresd.img
> > -rw-r--r--. 1 developer developer 657570 Aug  4 19:07
> > platform-tqma7/images/barebox-freescale-mx7-sabresd.img
> > [DOCKER][developer@25071f8c717f ptxdist]$ sha256sum
> > platform-tqma7/images/barebox-freescale-mx7-sabresd.img
> > e454525846e6fbfbd559c100106e43ef5b1f14112562aeb585ccb0b1d4b1bdfe
> > platform-tqma7/images/barebox-freescale-mx7-sabresd.img
> >
> > Only the NXP i.MX7 SabreSD board selected (497548 bytes)
> > [DOCKER][developer@25071f8c717f ptxdist]$ ll platform-tqma7/images/barebox-*
> > -rw-r--r--. 1 developer developer     28 Aug  4 19:14
> > platform-tqma7/images/barebox-default-environment
> > -rw-r--r--. 1 developer developer 497548 Aug  4 19:14
> > platform-tqma7/images/barebox-freescale-mx7-sabresd.img
> > lrwxrwxrwx. 1 developer developer     33 Aug  4 19:14
> > platform-tqma7/images/barebox-image ->
> > barebox-freescale-mx7-sabresd.img
> >
> > A lot of stuff gets deselected, since the board doesn't depend  on it.
> > Stuff like: CONFIG_MCI_IMX_ESDHC_PBL is suddenly not enabled, which I
> > think is vital. So I'll test the it tomorrow
>
> It's not. When you do your SDRAM setup in DCD, you can have the ROM code
> load barebox directly into SDRAM, so there's no need to have a limited
> eSDHC driver in pre-bootloader. CONFIG_MCI_IMX_ESDHC_PBL is unset then.
>
> Are you sure the board is strapped correctly to boot from SD?

I got the board configuration as:

SW3 = 10
SW2 = 00100000

I have tried with:
cat barebox-freescale-mx7-sabresd.img > /dev/sdb
sync /dev/sdb
and
sudo dd if=barebox-freescale-mx7-sabresd.img of=/dev/sdb bs=1024

>
> >
> > /Lars Pedersen
> >
> > --- barebox_full    2020-08-04 21:06:31.270363892 +0200
> > +++ barebox_one_board    2020-08-04 21:09:46.162669378 +0200
> > @@ -4,7 +4,6 @@
> >  #
> >  CONFIG_ARM=y
> >  CONFIG_ARM_LINUX=y
> > -CONFIG_ARM_USE_COMPRESSED_DTB=y
> >  CONFIG_TEXT_BASE=0x0
> >
> >  #
> > @@ -49,80 +48,67 @@
> >  # processor features
> >  #
> >  # CONFIG_BOOT_ENDIANNESS_SWITCH is not set
> > -CONFIG_ARCH_HAS_L2X0=y
> > -# CONFIG_CACHE_L2X0 is not set
> > -CONFIG_ARCH_TEXT_BASE=0x97f00000
> >  CONFIG_BAREBOX_MAX_IMAGE_SIZE=0xffffffff
> >  CONFIG_ARCH_IMX_IMXIMAGE=y
> > -CONFIG_RESET_IMX_SRC=y
> > -CONFIG_MACH_FREESCALE_MX51_PDK_POWER=y
> >
> >  #
> >  # Freescale i.MX System-on-Chip
> >  #
> > -CONFIG_ARCH_IMX50=y
> > -CONFIG_ARCH_IMX51=y
> > -CONFIG_ARCH_IMX53=y
> > -CONFIG_ARCH_IMX6=y
> > -CONFIG_ARCH_IMX6SX=y
> > -CONFIG_ARCH_IMX6UL=y
> >  CONFIG_ARCH_IMX7=y
> > -CONFIG_ARCH_VF610=y
> >  CONFIG_IMX_MULTI_BOARDS=y
> >  # CONFIG_MACH_SCB9328 is not set
> >  # CONFIG_MACH_TX25 is not set
> >  # CONFIG_MACH_PCA100 is not set
> >  # CONFIG_MACH_PCM038 is not set
> > -CONFIG_MACH_KINDLE_MX50=y
> > -CONFIG_MACH_CCMX51=y
> > -CONFIG_MACH_EFIKA_MX_SMARTBOOK=y
> > -CONFIG_MACH_EMBEDSKY_E9=y
> > -CONFIG_MACH_FREESCALE_MX51_PDK=y
> > -CONFIG_MACH_CCMX53=y
> > -CONFIG_MACH_FREESCALE_MX53_LOCO=y
> > -CONFIG_MACH_GUF_VINCELL=y
> > -CONFIG_MACH_TQMA53=y
> > -CONFIG_MACH_FREESCALE_MX53_VMX53=y
> > -CONFIG_MACH_TX53=y
> > -CONFIG_MACH_PHYTEC_SOM_IMX6=y
> > -CONFIG_MACH_KONTRON_SAMX6I=y
> > -CONFIG_MACH_DFI_FS700_M60=y
> > -CONFIG_MACH_GUF_SANTARO=y
> > -CONFIG_MACH_REALQ7=y
> > -CONFIG_MACH_GK802=y
> > -CONFIG_MACH_ELTEC_HIPERCAM=y
> > -CONFIG_MACH_TQMA6X=y
> > -CONFIG_MACH_TX6X=y
> > -CONFIG_MACH_SABRELITE=y
> > -CONFIG_MACH_SABRESD=y
> > -CONFIG_MACH_FREESCALE_IMX6SX_SABRESDB=y
> > -CONFIG_MACH_NITROGEN6=y
> > -CONFIG_MACH_SOLIDRUN_MICROSOM=y
> > -CONFIG_MACH_TECHNEXION_PICO_HOBBIT=y
> > -CONFIG_MACH_TECHNEXION_WANDBOARD=y
> > -CONFIG_MACH_EMBEST_MARSBOARD=y
> > -CONFIG_MACH_EMBEST_RIOTBOARD=y
> > -CONFIG_MACH_UDOO=y
> > +# CONFIG_MACH_KINDLE_MX50 is not set
> > +# CONFIG_MACH_CCMX51 is not set
> > +# CONFIG_MACH_EFIKA_MX_SMARTBOOK is not set
> > +# CONFIG_MACH_EMBEDSKY_E9 is not set
> > +# CONFIG_MACH_FREESCALE_MX51_PDK is not set
> > +# CONFIG_MACH_CCMX53 is not set
> > +# CONFIG_MACH_FREESCALE_MX53_LOCO is not set
> > +# CONFIG_MACH_GUF_VINCELL is not set
> > +# CONFIG_MACH_TQMA53 is not set
> > +# CONFIG_MACH_FREESCALE_MX53_VMX53 is not set
> > +# CONFIG_MACH_TX53 is not set
> > +# CONFIG_MACH_PHYTEC_SOM_IMX6 is not set
> > +# CONFIG_MACH_KONTRON_SAMX6I is not set
> > +# CONFIG_MACH_DFI_FS700_M60 is not set
> > +# CONFIG_MACH_GUF_SANTARO is not set
> > +# CONFIG_MACH_REALQ7 is not set
> > +# CONFIG_MACH_GK802 is not set
> > +# CONFIG_MACH_ELTEC_HIPERCAM is not set
> > +# CONFIG_MACH_TQMA6X is not set
> > +# CONFIG_MACH_TX6X is not set
> > +# CONFIG_MACH_SABRELITE is not set
> > +# CONFIG_MACH_SABRESD is not set
> > +# CONFIG_MACH_FREESCALE_IMX6SX_SABRESDB is not set
> > +# CONFIG_MACH_NITROGEN6 is not set
> > +# CONFIG_MACH_SOLIDRUN_MICROSOM is not set
> > +# CONFIG_MACH_TECHNEXION_PICO_HOBBIT is not set
> > +# CONFIG_MACH_TECHNEXION_WANDBOARD is not set
> > +# CONFIG_MACH_EMBEST_MARSBOARD is not set
> > +# CONFIG_MACH_EMBEST_RIOTBOARD is not set
> > +# CONFIG_MACH_UDOO is not set
> >  # CONFIG_MACH_UDOO_NEO is not set
> > -CONFIG_MACH_VARISCITE_MX6=y
> > -CONFIG_MACH_GW_VENTANA=y
> > -CONFIG_MACH_CM_FX6=y
> > -CONFIG_MACH_ADVANTECH_ROM_742X=y
> > -CONFIG_MACH_WARP7=y
> > -CONFIG_MACH_VF610_TWR=y
> > -CONFIG_MACH_ZII_COMMON=y
> > -CONFIG_MACH_ZII_RDU1=y
> > -CONFIG_MACH_ZII_RDU2=y
> > +# CONFIG_MACH_VARISCITE_MX6 is not set
> > +# CONFIG_MACH_GW_VENTANA is not set
> > +# CONFIG_MACH_CM_FX6 is not set
> > +# CONFIG_MACH_ADVANTECH_ROM_742X is not set
> > +# CONFIG_MACH_WARP7 is not set
> > +# CONFIG_MACH_VF610_TWR is not set
> > +# CONFIG_MACH_ZII_RDU1 is not set
> > +# CONFIG_MACH_ZII_RDU2 is not set
> >  # CONFIG_MACH_ZII_IMX8MQ_DEV is not set
> > -CONFIG_MACH_ZII_VF610_DEV=y
> > +# CONFIG_MACH_ZII_VF610_DEV is not set
> >  # CONFIG_MACH_ZII_IMX7D_DEV is not set
> > -CONFIG_MACH_PHYTEC_PHYCORE_IMX7=y
> > +# CONFIG_MACH_PHYTEC_PHYCORE_IMX7 is not set
> >  CONFIG_MACH_FREESCALE_MX7_SABRESD=y
> > -CONFIG_MACH_NXP_IMX6ULL_EVK=y
> > +# CONFIG_MACH_NXP_IMX6ULL_EVK is not set
> >  # CONFIG_MACH_NXP_IMX8MM_EVK is not set
> >  # CONFIG_MACH_NXP_IMX8MQ_EVK is not set
> >  # CONFIG_MACH_PHYTEC_SOM_IMX8MQ is not set
> > -CONFIG_MACH_GRINN_LITEBOARD=y
> > +# CONFIG_MACH_GRINN_LITEBOARD is not set
> >  # CONFIG_MACH_DIGI_CCIMX6ULSBCPRO is not set
> >
> >  #
> > @@ -133,17 +119,14 @@
> >  #
> >  # i.MX specific settings
> >  #
> > -CONFIG_IMX_IIM=y
> > -CONFIG_IMX_IIM_FUSE_BLOW=y
> > -# CONFIG_HABV4 is not set
> > +# CONFIG_IMX_IIM is not set
> >  # end of i.MX specific settings
> >
> >  # CONFIG_BOARD_ARM_GENERIC_DT is not set
> >  CONFIG_ARM_ASM_UNIFIED=y
> >  CONFIG_AEABI=y
> >  CONFIG_THUMB2_BAREBOX=y
> > -CONFIG_ARM_BOARD_APPEND_ATAG=y
> > -# CONFIG_ARM_BOARD_PREPEND_ATAG is not set
> > +# CONFIG_ARM_BOARD_APPEND_ATAG is not set
> >  # end of System Type
> >
> >  #
> > @@ -176,7 +159,6 @@
> >  CONFIG_STDDEV=y
> >  CONFIG_MENUTREE=y
> >  CONFIG_FILE_LIST=y
> > -CONFIG_BAREBOX_UPDATE_IMX_NAND_FCB=y
> >  CONFIG_UBIFORMAT=y
> >  CONFIG_USBGADGET_START=y
> >  CONFIG_BOOT=y
> > @@ -210,6 +192,7 @@
> >  # CONFIG_IMAGE_COMPRESSION_NONE is not set
> >  CONFIG_MMU=y
> >  CONFIG_MMU_EARLY=y
> > +CONFIG_HAVE_CONFIGURABLE_TEXT_BASE=y
> >  CONFIG_BAREBOX_MAX_PBL_SIZE=0xffffffff
> >  CONFIG_BAREBOX_MAX_BARE_INIT_SIZE=0xffffffff
> >  CONFIG_STACK_SIZE=0x8000
> > @@ -220,7 +203,7 @@
> >  # CONFIG_MALLOC_DLMALLOC is not set
> >  CONFIG_MALLOC_TLSF=y
> >  CONFIG_KALLSYMS=y
> > -CONFIG_RELOCATABLE=y
> > +# CONFIG_RELOCATABLE is not set
> >  # CONFIG_PANIC_HANG is not set
> >  CONFIG_PROMPT="barebox:"
> >  CONFIG_BAUDRATE=115200
> > @@ -470,7 +453,6 @@
> >  CONFIG_CMD_DETECT=y
> >  CONFIG_CMD_FLASH=y
> >  CONFIG_CMD_GPIO=y
> > -CONFIG_CMD_I2C=y
> >  CONFIG_CMD_LED=y
> >  CONFIG_CMD_NAND=y
> >  CONFIG_CMD_NANDTEST=y
> > @@ -537,7 +519,6 @@
> >  CONFIG_DRIVER_SERIAL_IMX=y
> >  # CONFIG_DRIVER_SERIAL_NS16550 is not set
> >  # CONFIG_DRIVER_SERIAL_CADENCE is not set
> > -CONFIG_DRIVER_SERIAL_LPUART=y
> >  # end of serial drivers
> >
> >  CONFIG_ARCH_HAS_FEC_IMX=y
> > @@ -597,25 +578,11 @@
> >  CONFIG_SPI_MEM=y
> >  # CONFIG_DRIVER_SPI_FSL_QUADSPI is not set
> >  CONFIG_DRIVER_SPI_GPIO=y
> > -CONFIG_DRIVER_SPI_IMX=y
> > -CONFIG_DRIVER_SPI_IMX_0_7=y
> > +# CONFIG_DRIVER_SPI_IMX is not set
> >  CONFIG_DRIVER_SPI_IMX_2_3=y
> > -CONFIG_DRIVER_SPI_DSPI=y
> >  # end of SPI drivers
> >
> > -CONFIG_I2C=y
> > -
> > -#
> > -# I2C Hardware Bus support
> > -#
> > -# CONFIG_I2C_GPIO is not set
> > -CONFIG_I2C_IMX=y
> > -# CONFIG_I2C_DESIGNWARE is not set
> > -# CONFIG_I2C_MV64XXX is not set
> > -# CONFIG_I2C_STM32 is not set
> > -# end of I2C Hardware Bus support
> > -
> > -# CONFIG_I2C_MUX is not set
> > +# CONFIG_I2C is not set
> >  CONFIG_MTD=y
> >  CONFIG_MTD_WRITE=y
> >  CONFIG_MTD_OOB_DEVICE=y
> > @@ -651,7 +618,6 @@
> >  CONFIG_NAND_BBT=y
> >  CONFIG_NAND_ALLOW_ERASE_BAD=y
> >  CONFIG_NAND_IMX=y
> > -CONFIG_NAND_MXS=y
> >  # CONFIG_MTD_NAND_ECC_SMC is not set
> >  CONFIG_MTD_NAND_IDS=y
> >  # CONFIG_MTD_NAND_DENALI is not set
> > @@ -687,7 +653,6 @@
> >  CONFIG_USB_HOST=y
> >  CONFIG_USB_IMX_CHIPIDEA=y
> >  CONFIG_USB_IMX_CHIPIDEA_USBMISC=y
> > -CONFIG_USB_IMX_PHY=y
> >  # CONFIG_USB_DWC3 is not set
> >  CONFIG_USB_EHCI=y
> >  # CONFIG_USB_DWC2_HOST is not set
> > @@ -699,7 +664,6 @@
> >  #
> >  # USB Miscellaneous drivers
> >  #
> > -# CONFIG_USB_HUB_USB251XB is not set
> >  CONFIG_USB_GADGET=y
> >  CONFIG_USB_GADGET_DUALSPEED=y
> >  CONFIG_USB_GADGET_DRIVER_ARC=y
> > @@ -714,21 +678,16 @@
> >  # CONFIG_USB_MUSB is not set
> >  CONFIG_VIDEO=y
> >  # CONFIG_FRAMEBUFFER_CONSOLE is not set
> > -# CONFIG_DRIVER_VIDEO_FB_SSD1307 is not set
> >  CONFIG_VIDEO_VPL=y
> >  CONFIG_DRIVER_VIDEO_IMX_IPUV3=y
> >  CONFIG_DRIVER_VIDEO_IMX_IPUV3_LVDS=y
> > -CONFIG_DRIVER_VIDEO_IMX_IPUV3_HDMI=y
> >  # CONFIG_DRIVER_VIDEO_IMX_IPUV3_PARALLEL is not set
> >  CONFIG_DRIVER_VIDEO_SIMPLEFB=y
> > -CONFIG_DRIVER_VIDEO_EDID=y
> >  # CONFIG_DRIVER_VIDEO_BACKLIGHT is not set
> >
> >  #
> >  # Video encoder chips
> >  #
> > -# CONFIG_DRIVER_VIDEO_MTL017 is not set
> > -# CONFIG_DRIVER_VIDEO_TC358767 is not set
> >  # CONFIG_DRIVER_VIDEO_SIMPLE_PANEL is not set
> >  CONFIG_MCI_SDHCI=y
> >  CONFIG_MCI=y
> > @@ -749,7 +708,6 @@
> >  # CONFIG_MCI_IMX_ESDHC_PIO is not set
> >  # CONFIG_MCI_ARASAN is not set
> >  # CONFIG_MCI_SPI is not set
> > -CONFIG_MCI_IMX_ESDHC_PBL=y
> >  CONFIG_HAVE_CLK=y
> >  CONFIG_CLKDEV_LOOKUP=y
> >  CONFIG_COMMON_CLK=y
> > @@ -761,7 +719,6 @@
> >  CONFIG_ARCH_HAS_IMX_GPT=y
> >  CONFIG_CLOCKSOURCE_DUMMY_RATE=1000
> >  CONFIG_CLOCKSOURCE_ARM_ARCHITECTED_TIMER=y
> > -CONFIG_CLOCKSOURCE_ARM_GLOBAL_TIMER=y
> >  CONFIG_CLOCKSOURCE_IMX_GPT=y
> >  # CONFIG_CLOCKSOURCE_DW_APB_TIMER is not set
> >  # end of Clocksource
> > @@ -769,18 +726,8 @@
> >  #
> >  # Multifunction device drivers
> >  #
> > -# CONFIG_MFD_ACT8846 is not set
> > -# CONFIG_MFD_DA9053 is not set
> > -CONFIG_MFD_DA9063=y
> > -# CONFIG_MFD_LP3972 is not set
> > -CONFIG_MFD_MC13XXX=y
> > -CONFIG_MFD_MC34704=y
> > -CONFIG_MFD_MC9SDZ60=y
> > -CONFIG_MFD_STMPE=y
> > -CONFIG_MFD_SYSCON=y
> > -# CONFIG_MFD_TWL4030 is not set
> > -# CONFIG_MFD_TWL6030 is not set
> > -# CONFIG_MFD_STPMIC1 is not set
> > +# CONFIG_MFD_MC13XXX is not set
> > +# CONFIG_MFD_SYSCON is not set
> >  # CONFIG_FINTEK_SUPERIO is not set
> >  # CONFIG_SMSC_SUPERIO is not set
> >  # end of Multifunction device drivers
> > @@ -801,13 +748,11 @@
> >  # CONFIG_LED_GPIO_RGB is not set
> >  # CONFIG_LED_GPIO_BICOLOR is not set
> >  CONFIG_LED_TRIGGERS=y
> > -# CONFIG_LED_PCA955X is not set
> >
> >  #
> >  # EEPROM support
> >  #
> >  CONFIG_EEPROM_AT25=y
> > -CONFIG_EEPROM_AT24=y
> >  # end of EEPROM support
> >
> >  #
> > @@ -816,7 +761,6 @@
> >  CONFIG_INPUT=y
> >  CONFIG_KEYBOARD_GPIO=y
> >  # CONFIG_KEYBOARD_IMX_KEYPAD is not set
> > -# CONFIG_KEYBOARD_QT1070 is not set
> >  # CONFIG_KEYBOARD_USB is not set
> >  # CONFIG_INPUT_SPECIALKEYS is not set
> >  # end of Input device support
> > @@ -833,7 +777,6 @@
> >  #
> >  # DMA support
> >  #
> > -CONFIG_MXS_APBH_DMA=y
> >  # end of DMA support
> >
> >  CONFIG_GPIOLIB=y
> > @@ -844,12 +787,7 @@
> >  CONFIG_GPIO_74164=y
> >  # CONFIG_GPIO_GENERIC_PLATFORM is not set
> >  CONFIG_GPIO_IMX=y
> > -CONFIG_GPIO_VF610=y
> > -# CONFIG_GPIO_PCA953X is not set
> > -# CONFIG_GPIO_PCF857X is not set
> > -CONFIG_GPIO_STMPE=y
> >  # CONFIG_GPIO_DESIGNWARE is not set
> > -# CONFIG_GPIO_SX150X is not set
> >  # end of GPIO
> >
> >  # CONFIG_W1 is not set
> > @@ -860,14 +798,9 @@
> >  CONFIG_PINCTRL=y
> >  CONFIG_PINCTRL_IMX_IOMUX_V3=y
> >  # CONFIG_PINCTRL_SINGLE is not set
> > -CONFIG_PINCTRL_VF610=y
> >  # end of Pin controllers
> >
> > -CONFIG_NVMEM=y
> > -# CONFIG_NVMEM_SNVS_LPGPR is not set
> > -CONFIG_IMX_OCOTP=y
> > -# CONFIG_IMX_OCOTP_WRITE is not set
> > -# CONFIG_EEPROM_93XX46 is not set
> > +# CONFIG_NVMEM is not set
> >
> >  #
> >  # Bus devices
> > @@ -877,8 +810,6 @@
> >
> >  CONFIG_REGULATOR=y
> >  CONFIG_REGULATOR_FIXED=y
> > -# CONFIG_REGULATOR_PFUZE is not set
> > -# CONFIG_REGULATOR_ANATOP is not set
> >
> >  #
> >  # Remoteproc drivers
> > @@ -992,16 +923,14 @@
> >  # CONFIG_BASE64 is not set
> >  CONFIG_PROCESS_ESCAPE_SEQUENCE=y
> >  CONFIG_LZO_DECOMPRESS=y
> > -CONFIG_BCH=y
> >  CONFIG_FNMATCH=y
> >  CONFIG_QSORT=y
> >  CONFIG_LIBSCAN=y
> >  CONFIG_LIBUBIGEN=y
> > -CONFIG_STMP_DEVICE=y
> >  # CONFIG_RATP is not set
> >  # CONFIG_ALLOW_PRNG_FALLBACK is not set
> >  # CONFIG_CRC_CCITT is not set
> > -CONFIG_CRC8=y
> > +# CONFIG_CRC8 is not set
> >
> >
> >
> >
> >>
> >> Can you try with same toolchain? If that works, it
> >> might be a compiler issue? What are you using?
> >>
> >>>
> >>> /Lars Pedersen
> >>>
> >>> On Mon, 3 Aug 2020 at 12:10, Ahmad Fatoum <a.fatoum@pengutronix.de> wrote:
> >>>>
> >>>> Hi,
> >>>>
> >>>> On 7/29/20 6:52 PM, Lars Pedersen wrote:
> >>>>> I have spent the last couple of days trying to port our bootloader
> >>>>> from u-boot to barebox 2020.07 but have yet to get any console output.
> >>>>> Our product is based on tqma7d i.MX7 dual core cpu and uses UART4 for
> >>>>> serial console and boots from internal eMMC.
> >>>>>
> >>>>> I created a new board inspired from "NXP i.MX7 SabreSD board" and
> >>>>> tried to only add the basic in the first step to get a console output
> >>>>> working. The image is built using ptxdist and the imx_v7_defconfig
> >>>>> where the new board is selected. The image is flashed with "dd
> >>>>> if=barebox-image of=/dev/mmcblk0 bs=1024 skip=1 seek=1 conv=fsync".
> >>>>> The device works using u-boot 2020.07 with the same device trees but
> >>>>> we thought it was time to try out barebox since u-boot felt a little
> >>>>> bloated :)
> >>>>>
> >>>>> So can anyone be of assistance and tell me what I'm missing?
> >>>>
> >>>> When I looked through your patch the first time, I just looked
> >>>> for stuff that would cause it to not boot. Some more comments
> >>>> inline that are unrelated to your boot problems.
> >>>>
> >>>>>
> >>>>> /Lars Pedersen
> >>>>>
> >>>>> From: Lars Pedersen <laa@kamstrup.com>
> >>>>> Date: Tue, 28 Jul 2020 08:57:57 +0000
> >>>>> Subject: [PATCH] Add kamstrup imx7d dev board
> >>>>>
> >>>>> ---
> >>>>>  arch/arm/boards/Makefile                           |   1 +
> >>>>>  arch/arm/boards/kamstrup-imx7d-tqma7d/Makefile     |   2 +
> >>>>>  arch/arm/boards/kamstrup-imx7d-tqma7d/board.c      |  19 ++
> >>>>>  .../flash-header-kamstrup-imx7d-tqma7d.imxcfg      |  79 ++++++
> >>>>>  arch/arm/boards/kamstrup-imx7d-tqma7d/lowlevel.c   |  35 +++
> >>>>>  arch/arm/dts/Makefile                              |   1 +
> >>>>>  arch/arm/dts/imx7d-flex-concentrator-mfg.dts       |  11 +
> >>>>>  arch/arm/mach-imx/Kconfig                          |   5 +
> >>>>>  drivers/regulator/Kconfig                          |   2 +-
> >>>>>  dts/src/arm/imx7d-flex-concentrator-mfg.dts        |  25 ++
> >>>>>  dts/src/arm/imx7d-flex-concentrator.dts            | 313 +++++++++++++++++++++
> >>>>>  images/Makefile.imx                                |   5 +
> >>>>>  12 files changed, 497 insertions(+), 1 deletion(-)
> >>>>>  create mode 100644 arch/arm/boards/kamstrup-imx7d-tqma7d/Makefile
> >>>>>  create mode 100644 arch/arm/boards/kamstrup-imx7d-tqma7d/board.c
> >>>>>  create mode 100644
> >>>>> arch/arm/boards/kamstrup-imx7d-tqma7d/flash-header-kamstrup-imx7d-tqma7d.imxcfg
> >>>>>  create mode 100644 arch/arm/boards/kamstrup-imx7d-tqma7d/lowlevel.c
> >>>>>  create mode 100644 arch/arm/dts/imx7d-flex-concentrator-mfg.dts
> >>>>>  create mode 100644 dts/src/arm/imx7d-flex-concentrator-mfg.dts
> >>>>>  create mode 100644 dts/src/arm/imx7d-flex-concentrator.dts
> >>>>>
> >>>>> diff --git a/arch/arm/boards/Makefile b/arch/arm/boards/Makefile
> >>>>> index e9e9163d589b..58bb4cf2adab 100644
> >>>>> --- a/arch/arm/boards/Makefile
> >>>>> +++ b/arch/arm/boards/Makefile
> >>>>> @@ -64,6 +64,7 @@ obj-$(CONFIG_MACH_HIGHBANK)            += highbank/
> >>>>>  obj-$(CONFIG_MACH_IMX21ADS)            += freescale-mx21-ads/
> >>>>>  obj-$(CONFIG_MACH_IMX233_OLINUXINO)        += imx233-olinuxino/
> >>>>>  obj-$(CONFIG_MACH_IMX27ADS)            += freescale-mx27-ads/
> >>>>> +obj-$(CONFIG_MACH_KAMSTRUP_IMX7D_TQMA7D)    += kamstrup-imx7d-tqma7d/
> >>>>>  obj-$(CONFIG_MACH_KINDLE3)            += kindle3/
> >>>>>  obj-$(CONFIG_MACH_KONTRON_SAMX6I)        += kontron-samx6i/
> >>>>>  obj-$(CONFIG_MACH_LENOVO_IX4_300D)        += lenovo-ix4-300d/
> >>>>> diff --git a/arch/arm/boards/kamstrup-imx7d-tqma7d/Makefile
> >>>>> b/arch/arm/boards/kamstrup-imx7d-tqma7d/Makefile
> >>>>> new file mode 100644
> >>>>> index 000000000000..01c7a259e9a5
> >>>>> --- /dev/null
> >>>>> +++ b/arch/arm/boards/kamstrup-imx7d-tqma7d/Makefile
> >>>>> @@ -0,0 +1,2 @@
> >>>>> +obj-y += board.o
> >>>>> +lwl-y += lowlevel.o
> >>>>> diff --git a/arch/arm/boards/kamstrup-imx7d-tqma7d/board.c
> >>>>> b/arch/arm/boards/kamstrup-imx7d-tqma7d/board.c
> >>>>> new file mode 100644
> >>>>> index 000000000000..b3ffa851f3e6
> >>>>> --- /dev/null
> >>>>> +++ b/arch/arm/boards/kamstrup-imx7d-tqma7d/board.c
> >>>>> @@ -0,0 +1,19 @@
> >>>>> +// SPDX-License-Identifier: GPL-2.0-or-later
> >>>>> +// SPDX-FileCopyrightText: 2020 Kamstrup A/S
> >>>>> +
> >>>>> +/* Author: Lars Pedersen <lapeddk@gmail.com> */
> >>>>> +
> >>>>> +#include <common.h>
> >>>>> +#include <init.h>
> >>>>> +#include <io.h>
> >>>>> +#include <mach/imx7-regs.h>
> >>>>> +#include <mfd/imx7-iomuxc-gpr.h>
> >>>>> +
> >>>>> +static int kamstrup_mx7_tqma7d_coredevices_init(void)
> >>>>> +{
> >>>>> +    if (!of_machine_is_compatible("kam,imx7d-flex-concentrator"))
> >>>>> +        return 0;
> >>>>> +
> >>>>> +    return 0;
> >>>>> +}
> >>>>
> >>>> Function serves no purpose. If you don't have baord code, drop it altogether.
> >>>>
> >>>
> >>> I'll do a cleanup when I have it working :D
> >>>
> >>>>> +coredevice_initcall(kamstrup_mx7_tqma7d_coredevices_init);
> >>>>> diff --git a/arch/arm/boards/kamstrup-imx7d-tqma7d/flash-header-kamstrup-imx7d-tqma7d.imxcfg
> >>>>> b/arch/arm/boards/kamstrup-imx7d-tqma7d/flash-header-kamstrup-imx7d-tqma7d.imxcfg
> >>>>> new file mode 100644
> >>>>> index 000000000000..7656619c1b2e
> >>>>> --- /dev/null
> >>>>> +++ b/arch/arm/boards/kamstrup-imx7d-tqma7d/flash-header-kamstrup-imx7d-tqma7d.imxcfg
> >>>>> @@ -0,0 +1,79 @@
> >>>>> +soc imx7
> >>>>> +loadaddr 0x80000000
> >>>>> +dcdofs 0x400
> >>>>
> >>>> Called ivtofs now in barebox next branch now.
> >>>>
> >>>
> >>> Okay thanks.
> >>>
> >>>>> diff --git a/arch/arm/dts/imx7d-flex-concentrator-mfg.dts
> >>>>> b/arch/arm/dts/imx7d-flex-concentrator-mfg.dts
> >>>>> new file mode 100644
> >>>>> index 000000000000..746e36a70f4c
> >>>>> --- /dev/null
> >>>>> +++ b/arch/arm/dts/imx7d-flex-concentrator-mfg.dts
> >>>>> @@ -0,0 +1,11 @@
> >>>>> +/*
> >>>>> + * The code contained herein is licensed under the GNU General Public
> >>>>> + * License. You may obtain a copy of the GNU General Public License
> >>>>> + * Version 2 or later at the following locations:
> >>>>> + *
> >>>>> + * http://www.opensource.org/licenses/gpl-license.html
> >>>>> + * http://www.gnu.org/copyleft/gpl.html
> >>>>> + */
> >>>>> +
> >>>>> +#include <arm/imx7d-flex-concentrator-mfg.dts>
> >>>>> +
> >>>>> diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
> >>>>> index 6dd5cb2aca15..d0a9332c7a24 100644
> >>>>> --- a/arch/arm/mach-imx/Kconfig
> >>>>> +++ b/arch/arm/mach-imx/Kconfig
> >>>>> @@ -492,6 +492,11 @@ config MACH_ZII_IMX7D_DEV
> >>>>>      select ARCH_IMX7
> >>>>>      select ARM_USE_COMPRESSED_DTB
> >>>>>
> >>>>> +config MACH_KAMSTRUP_IMX7D_TQMA7D
> >>>>> +    bool "Kamstrup TQMa7D based devices"
> >>>>> +    select ARCH_IMX7
> >>>>> +    select ARM_USE_COMPRESSED_DTB
> >>>>> +
> >>>>>  config MACH_PHYTEC_PHYCORE_IMX7
> >>>>>      bool "Phytec phyCORE i.MX7"
> >>>>>      select ARCH_IMX7
> >>>>> diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
> >>>>> index 1ce057180a01..b0bdc48399e3 100644
> >>>>> --- a/drivers/regulator/Kconfig
> >>>>> +++ b/drivers/regulator/Kconfig
> >>>>> @@ -19,7 +19,7 @@ config REGULATOR_BCM283X
> >>>>>  config REGULATOR_PFUZE
> >>>>>      bool "Freescale PFUZE100/200/3000 regulator driver"
> >>>>>      depends on I2C
> >>>>> -    depends on ARCH_IMX6 || ARCH_IMX8MQ
> >>>>> +    depends on ARCH_IMX6 || ARCH_IMX7 || ARCH_IMX8MQ
> >>>>>
> >>>>>  config REGULATOR_STM32_PWR
> >>>>>      bool "STMicroelectronics STM32 PWR"
> >>>>> diff --git a/dts/src/arm/imx7d-flex-concentrator-mfg.dts
> >>>>> b/dts/src/arm/imx7d-flex-concentrator-mfg.dts
> >>>>> new file mode 100644
> >>>>> index 000000000000..789f0837058f
> >>>>> --- /dev/null
> >>>>> +++ b/dts/src/arm/imx7d-flex-concentrator-mfg.dts
> >>>>
> >>>> Perfectly fine for your patch stack in BSP, but if you want to upstream
> >>>> it, you need to either:
> >>>>
> >>>> 1) upstream your device tree to Linux. dts/ is a sync with Linux and
> >>>>    shortly after, it will be imported into barebox
> >>>> 2) put your device tree in arch/arm/dts
> >>>>
> >>> The dts will upstreamed soon. Hopefully :D
> >>>
> >>
> >> --
> >> Pengutronix e.K.                           |                             |
> >> Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
> >> 31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
> >> Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |
> >
>
> --
> Pengutronix e.K.                           |                             |
> Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
> 31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
> Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

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