We can type a character during boot and easily get to a U-boot console. After that I try this:
setenv xyz alligator saveenv Saving Environment to MMC... MMC Device 0 not found No MMC card found Failed (1)After some study of the boot script (below), I now know I could give the command "mmc dev 1" and perhaps then saveenv would work.
boot switch to partitions #0, OK mmc1 is current device Scanning mmc 1:1... Found U-Boot script /boot/boot.scr 3341 bytes read in 5 ms (652.3 KiB/s) ## Executing script at 00500000 Boot script loaded from mmc 1 230 bytes read in 4 ms (55.7 KiB/s) 13055673 bytes read in 571 ms (21.8 MiB/s) 28647936 bytes read in 1245 ms (21.9 MiB/s) 65295 bytes read in 10 ms (6.2 MiB/s) 2698 bytes read in 9 ms (292 KiB/s) Applying kernel provided DT fixup script (rockchip-fixup.scr) ## Executing script at 09000000 Moving Image from 0x2080000 to 0x2200000, end=3df0000 ## Loading init Ramdisk from Legacy Image at 06000000 ... ...So there is a script in the linux filesystem I should look at.
scp orangepi@192.168.0.131:/boot/boot.cmd . scp orangepi@192.168.0.131:/boot/orangepiEnv.txt .Here is boot.cmd.
# DO NOT EDIT THIS FILE
#
# Please edit /boot/orangepiEnv.txt to set supported parameters
#
setenv load_addr "0x9000000"
setenv overlay_error "false"
# default values
setenv rootdev "/dev/mmcblk0p1"
setenv verbosity "1"
setenv console "both"
setenv bootlogo "false"
setenv rootfstype "ext4"
setenv docker_optimizations "on"
setenv earlycon "off"
echo "Boot script loaded from ${devtype} ${devnum}"
if test -e ${devtype} ${devnum} ${prefix}orangepiEnv.txt; then
load ${devtype} ${devnum} ${load_addr} ${prefix}orangepiEnv.txt
env import -t ${load_addr} ${filesize}
fi
if test "${logo}" = "disabled"; then setenv logo "logo.nologo"; fi
if test "${console}" = "display" || test "${console}" = "both"; then setenv consoleargs "console=tty1"; fi
if test "${console}" = "serial" || test "${console}" = "both"; then setenv consoleargs "console=ttyS2,1500000 ${consoleargs}"; fi
if test "${earlycon}" = "on"; then setenv consoleargs "earlycon ${consoleargs}"; fi
if test "${bootlogo}" = "true"; then setenv consoleargs "bootsplash.bootfile=bootsplash.orangepi ${consoleargs}"; fi
# get PARTUUID of first partition on SD/eMMC the boot script was loaded from
if test "${devtype}" = "mmc"; then part uuid mmc ${devnum}:1 partuuid; fi
setenv bootargs "root=${rootdev} rootwait rootfstype=${rootfstype} ${consoleargs} consoleblank=0 loglevel=${verbosity} ubootpart=${partuuid} usb-storage.quirks=${usbstoragequirks} ${extraargs} ${extraboardargs}"
if test "${docker_optimizations}" = "on"; then setenv bootargs "${bootargs} cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory swapaccount=1"; fi
load ${devtype} ${devnum} ${ramdisk_addr_r} ${prefix}uInitrd
load ${devtype} ${devnum} ${kernel_addr_r} ${prefix}Image
load ${devtype} ${devnum} ${fdt_addr_r} ${prefix}dtb/${fdtfile}
fdt addr ${fdt_addr_r}
fdt resize 65536
for overlay_file in ${overlays}; do
if load ${devtype} ${devnum} ${load_addr} ${prefix}dtb/rockchip/overlay/${overlay_prefix}-${overlay_file}.dtbo; then
echo "Applying kernel provided DT overlay ${overlay_prefix}-${overlay_file}.dtbo"
fdt apply ${load_addr} || setenv overlay_error "true"
fi
done
for overlay_file in ${user_overlays}; do
if load ${devtype} ${devnum} ${load_addr} ${prefix}overlay-user/${overlay_file}.dtbo; then
echo "Applying user provided DT overlay ${overlay_file}.dtbo"
fdt apply ${load_addr} || setenv overlay_error "true"
fi
done
if test "${overlay_error}" = "true"; then
echo "Error applying DT overlays, restoring original DT"
load ${devtype} ${devnum} ${fdt_addr_r} ${prefix}dtb/${fdtfile}
else
if load ${devtype} ${devnum} ${load_addr} ${prefix}dtb/rockchip/overlay/${overlay_prefix}-fixup.scr; then
echo "Applying kernel provided DT fixup script (${overlay_prefix}-fixup.scr)"
source ${load_addr}
fi
if test -e ${devtype} ${devnum} ${prefix}fixup.scr; then
load ${devtype} ${devnum} ${load_addr} ${prefix}fixup.scr
echo "Applying user provided fixup script (fixup.scr)"
source ${load_addr}
fi
fi
if test "${ethernet_phy}" = "rtl8211f"; then
fdt set /ethernet@ff540000 tx_delay <0x24>
fdt set /ethernet@ff540000 rx_delay <0x18>
fi
booti ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr_r}
# Recompile with:
# mkimage -C none -A arm -T script -d /boot/boot.cmd /boot/boot.scr
Here is orangepiEnv.txt
verbosity=1 bootlogo=false overlay_prefix=rockchip fdtfile=rockchip/rk3328-orangepi-r1-plus-lts.dtb rootdev=UUID=69d4df83-7211-47d3-88a6-c311fc7c298f rootfstype=ext4 console=serial usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:uFinally, here are the U-boot environment settings:
=> printenv
arch=arm
baudrate=1500000
board=evb_rk3328
board_name=evb_rk3328
boot_a_script=load ${devtype} ${devnum}:${distro_bootpart} ${scriptaddr} ${prefix}${script}; source ${scriptaddr}
boot_efi_binary=if fdt addr ${fdt_addr_r}; then bootefi bootmgr ${fdt_addr_r};else bootefi bootmgr ${fdtcontroladdr};fi;load ${devtype} ${devnum}:${distro_bootpart} ${kernel_addr_r} efi/boot/bootaa64.efi; if fdt addr
${fdt_addr_r}; then bootefi ${kernel_addr_r} ${fdt_addr_r};else bootefi ${kernel_addr_r} ${fdtcontroladdr};fi
boot_extlinux=sysboot ${devtype} ${devnum}:${distro_bootpart} any ${scriptaddr} ${prefix}${boot_syslinux_conf}
boot_net_usb_start=usb start
boot_prefixes=/ /boot/
boot_script_dhcp=boot.scr.uimg
boot_scripts=boot.scr.uimg boot.scr
boot_syslinux_conf=extlinux/extlinux.conf
boot_targets=mmc1 mmc0 usb0 pxe dhcp
bootcmd=run distro_bootcmd
bootcmd_dhcp=run boot_net_usb_start; if dhcp ${scriptaddr} ${boot_script_dhcp}; then source ${scriptaddr}; fi;setenv efi_fdtfile ${fdtfile}; setenv efi_old_vci ${bootp_vci};setenv efi_old_arch ${bootp_arch};setenv boo
tp_vci PXEClient:Arch:00011:UNDI:003000;setenv bootp_arch 0xb;if dhcp ${kernel_addr_r}; then tftpboot ${fdt_addr_r} dtb/${efi_fdtfile};if fdt addr ${fdt_addr_r}; then bootefi ${kernel_addr_r} ${fdt_addr_r}; else boote
fi ${kernel_addr_r} ${fdtcontroladdr};fi;fi;setenv bootp_vci ${efi_old_vci};setenv bootp_arch ${efi_old_arch};setenv efi_fdtfile;setenv efi_old_arch;setenv efi_old_vci;
bootcmd_mmc0=devnum=0; run mmc_boot
bootcmd_mmc1=devnum=1; run mmc_boot
bootcmd_pxe=run boot_net_usb_start; dhcp; if pxe get; then pxe boot; fi
bootcmd_usb0=devnum=0; run usb_boot
bootdelay=0
cpu=armv8
cpuid#=55524b553339303237000000000e2207
distro_bootcmd=for target in ${boot_targets}; do run bootcmd_${target}; done
efi_dtb_prefixes=/ /dtb/ /dtb/current/
eth1addr=32:87:c7:a6:0b:1a
ethaddr=32:87:c7:a6:0b:fa
ethernet_phy=yt8531c
fdt_addr_r=0x01f00000
fdtcontroladdr=3df31210
fdtfile=rockchip/rk3328-orangepi-r1-plus-lts.dtb
kernel_addr_r=0x02080000
load_efi_dtb=load ${devtype} ${devnum}:${distro_bootpart} ${fdt_addr_r} ${prefix}${efi_fdtfile}
mmc_boot=if mmc dev ${devnum}; then devtype=mmc; run scan_dev_for_boot_part; fi
partitions=uuid_disk=${uuid_gpt_disk};name=loader1,start=32K,size=4000K,uuid=${uuid_gpt_loader1};name=loader2,start=8MB,size=4MB,uuid=${uuid_gpt_loader2};name=trust,size=4M,uuid=${uuid_gpt_atf};name=boot,size=112M,boo
table,uuid=${uuid_gpt_boot};name=rootfs,size=-,uuid=B921B045-1DF0-41C3-AF44-4C6F280D3FAE;
pxefile_addr_r=0x00600000
ramdisk_addr_r=0x06000000
scan_dev_for_boot=echo Scanning ${devtype} ${devnum}:${distro_bootpart}...; for prefix in ${boot_prefixes}; do run scan_dev_for_extlinux; run scan_dev_for_scripts; done;run scan_dev_for_efi;
scan_dev_for_boot_part=part list ${devtype} ${devnum} -bootable devplist; env exists devplist || setenv devplist 1; for distro_bootpart in ${devplist}; do if fstype ${devtype} ${devnum}:${distro_bootpart} bootfstype;
then run scan_dev_for_boot; fi; done; setenv devplist
scan_dev_for_efi=setenv efi_fdtfile ${fdtfile}; for prefix in ${efi_dtb_prefixes}; do if test -e ${devtype} ${devnum}:${distro_bootpart} ${prefix}${efi_fdtfile}; then run load_efi_dtb; fi;done;if test -e ${devtype} ${
devnum}:${distro_bootpart} efi/boot/bootaa64.efi; then echo Found EFI removable media binary efi/boot/bootaa64.efi; run boot_efi_binary; echo EFI LOAD FAILED: continuing...; fi; setenv efi_fdtfile
scan_dev_for_extlinux=if test -e ${devtype} ${devnum}:${distro_bootpart} ${prefix}${boot_syslinux_conf}; then echo Found ${prefix}${boot_syslinux_conf}; run boot_extlinux; echo SCRIPT FAILED: continuing...; fi
scan_dev_for_scripts=for script in ${boot_scripts}; do if test -e ${devtype} ${devnum}:${distro_bootpart} ${prefix}${script}; then echo Found U-Boot script ${prefix}${script}; run boot_a_script; echo SCRIPT FAILED: co
ntinuing...; fi; done
scriptaddr=0x00500000
serial#=2a73990c9e9d3705
soc=rk3328
stderr=serial@ff130000
stdin=serial@ff130000
stdout=serial@ff130000
usb_boot=usb start; if usb dev ${devnum}; then devtype=usb; run scan_dev_for_boot_part; fi
vendor=rockchip
Environment size: 4106/32764 bytes
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