Hi,
I have a standalone ls1021a and boot source is eMMC.
I followed the steps in AN5184 and
Before I start the flash, I hard strapped the cfg_rcw_src[0:8] to hard coded mode which is 9a in my case
after I successfully flash the uboot into the eMMC, I then hard strapping to the eMMC of the cfg_rcw_src[0:8].
I want to verify if i can see the uboot so I use a FTDI connector to the UART_SIN and UART_SOUT, I assumed this is how it's done on the Evaluation board. But I did not see anything from the serial port.
Do i need to some port mapping in the uboot or do I need to do some RCW configuration to make the P2,P1 in the picture above to the LPUART1 mode?
There is the following on my screen:
Do you see the ls1021atwr.h.zip file?
Have a great day,
Pavel Chubakov
(1) can you take a look at my ls1021atwr_sdcard_ifc_defconfig file under u-boot/configs ? specially the ones I highlighted.
===================================================================
CONFIG_ARM=y
CONFIG_TARGET_LS1021ATWR=y
CONFIG_SYS_TEXT_BASE=0x82000000
CONFIG_SPL_LIBCOMMON_SUPPORT=y
CONFIG_SPL_LIBGENERIC_SUPPORT=y
CONFIG_SPL_MMC_SUPPORT=y
CONFIG_SPL_SERIAL_SUPPORT=y
CONFIG_SPL=y
CONFIG_AHCI=y
CONFIG_DISTRO_DEFAULTS=y
CONFIG_NR_DRAM_BANKS=1
CONFIG_FIT=y
CONFIG_FIT_VERBOSE=y
CONFIG_OF_BOARD_SETUP=y
CONFIG_OF_STDOUT_VIA_ALIAS=y
CONFIG_SYS_EXTRA_OPTIONS="RAMBOOT_PBL,SPL_FSL_PBL,SD_BOOT".------------> should I add "LPUART"
CONFIG_SD_BOOT=y
CONFIG_BOOTDELAY=3
CONFIG_USE_BOOTARGS=y
CONFIG_BOOTARGS="console=ttyS0,115200 root=/dev/ram0" ------------------>SHOULD I change to "ttyLP0"
Should I add:
CONFIG_DM_SERIAL =y
CONFIG_FSL_LPUART=Y
CONFIG_SILENT_CONSOLE=y
# CONFIG_CONSOLE_MUX is not set
CONFIG_SYS_CONSOLE_IS_IN_ENV=y
CONFIG_MISC_INIT_R=y
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR=y
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0xe8
CONFIG_SPL_ENV_SUPPORT=y
CONFIG_SPL_I2C_SUPPORT=y
CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT=y
CONFIG_SPL_WATCHDOG_SUPPORT=y
CONFIG_CMD_IMLS=y
CONFIG_CMD_GREPENV=y
CONFIG_CMD_MEMINFO=y
CONFIG_CMD_MEMTEST=y
CONFIG_CMD_GPT=y
CONFIG_CMD_I2C=y
CONFIG_CMD_MMC=y
CONFIG_CMD_USB=y
CONFIG_CMD_BMP=y
# CONFIG_SPL_EFI_PARTITION is not set
CONFIG_OF_CONTROL=y
CONFIG_DEFAULT_DEVICE_TREE="ls1021a-twr-duart"------------------>SHOULD I change to "ls1021a-twr-lpuart"
CONFIG_ENV_IS_IN_MMC=y
CONFIG_DM=y
CONFIG_SATA_CEVA=y
CONFIG_FSL_CAAM=y
CONFIG_DM_MMC=y
CONFIG_FSL_ESDHC=y
CONFIG_MTD_NOR_FLASH=y
CONFIG_FLASH_CFI_DRIVER=y
CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
CONFIG_SYS_FLASH_CFI=y
CONFIG_PHY_GIGE=y
CONFIG_E1000=y
CONFIG_MII=y
CONFIG_TSEC_ENET=y
CONFIG_PCI=y
CONFIG_DM_PCI=y
CONFIG_DM_PCI_COMPAT=y
CONFIG_PCIE_LAYERSCAPE=y
CONFIG_DM_SCSI=y
CONFIG_SYS_NS16550=y
CONFIG_USB=y
CONFIG_DM_USB=y
CONFIG_USB_XHCI_HCD=y
CONFIG_USB_XHCI_DWC3=y
CONFIG_VIDEO_FSL_DCU_FB=y
CONFIG_VIDEO=y
# CONFIG_VIDEO_SW_CURSOR is not set
========================================
(2) Who controls where the uboot information to be printed during the start up of the board like shown below before loading the kernel? Printing uboot information and kernel loading are handled separately I assume?
(3)Also when I edited the ls1021atwr_boot.scr file under the /boot partition
from console=ttyS0,115200 to console=ttySLP0,115200 after reboot it crashed I am not sure if I am allowed to do like this since after I rebuild the uboot I found out that the console=ttyS0 is still not LP0 even tho in the uboot environment the console=ttyLP0
Hi Pavel,
Now I am able print system information at LPUART1 port. But the uboot printing information (before kernel starts to get load). Things like this below:
These information are still printed from default serial port. How to make these information print from LPUART1 as well?
Hi Pavel,
I can only see ls1021atwr lpuart for nor flash I did not see any for sd card version. What should I do to have a sd card version
should I still add
into my sdcard_qspi_deconfig and recompile the kernel?
