Edison `boot` options

Hi,

And what are you using as a terminal emulator? I am using putty and I have the scrolling option so yours is maybe not enabled. To enable it in the Putty configuration screen go to “Window” and check the display scrollbar option.

Also, check out this link about U-Boot, you may find it helpful Using U-Boot | STLinux

Sergio

Hello MarkOg,

Use " help | less " command to see all the options that are available for boot. To scroll up and down in the list just use up and down arrow keys and to quit from that use " :q " .

Hi,

I’ve been trying to list all options using screen but I also don’t get to see all available options of help in the “boot>” menu without scrolling. This is a limitation of screen. I’d suggest you to download a terminal emulator such as Putty to have the scrolling option. See PuTTY Download Page

Sergio

MarkOg,

Yes, better to go with Putty software in that you can scroll your screen. That will be last option , I have also checked with Screen application but somehow it won't allow to scroll so maybe that's the limitation of it. So go with Intel_Alvarado's solution.

Something like this:

boot > help
?       - alias for 'help'
askenv  - get environment variables from stdin
base    - print or set address offset
bdinfo  - print Board Info structure
boot    - boot default, i.e., run 'bootcmd'
bootd   - boot default, i.e., run 'bootcmd'
bootelf - Boot from an ELF image in memory
bootm   - boot application image from memory
bootvx  - Boot vxWorks from an ELF image
cmp     - memory compare
coninfo - print console devices and information
cp      - memory copy
crc32   - checksum calculation
dcache  - enable or disable data cache
dfu     - Device Firmware Upgrade
echo    - echo args to console
editenv - edit environment variable
env     - environment handling commands
exit    - exit script
ext4load- load binary file from a Ext4 filesystem
ext4ls  - list files in a directory (default /)
ext4write- create a file in the root directory
false   - do nothing, unsuccessfully
fatinfo - print information about filesystem
fatload - load binary file from a dos filesystem
fatls   - list files in a directory (default /)
fatwrite- write file into a dos filesystem
gettime - get timer val elapsed,

go      - start application at address 'addr'
gpt     - GUID Partition Table
grepenv - search environment variables
hash    - compute message digest
help    - print command description/usage
icache  - enable or disable instruction cache
in      - read data from an IO port
ini     - parse an ini file in memory and merge the specified section into the env
interrupts- enable or disable interrupts
irqinfo - print information about IRQs
itest   - return true/false on integer compare
load    - load binary file from a filesystem
loadb   - load binary file over serial line (kermit mode)
loads   - load S-Record file over serial line
loadx   - load binary file over serial line (xmodem mode)
loady   - load binary file over serial line (ymodem mode)
loop    - infinite loop on address range
ls      - list files in a directory (default /)
md      - memory display
meminfo - display memory information
mm      - memory modify (auto-incrementing address)
mmc     - MMC sub system
mmcinfo - display MMC info
mw      - memory write (fill)
nm      - memory modify (constant address)
out     - write datum to IO port
part    - disk partition related commands
pci     - list and access PCI Configuration Space
printenv- print environment variables
read    - Load binary data from a partition
reginfo - print register information
reset   - Perform RESET of the CPU
run     - run commands in an environment variable
saveenv - save environment variables to persistent storage
setenv  - set environment variables
setexpr - set environment variable as the result of eval expression
sha1sum - compute SHA1 message digest
showvar - print local hushshell variables
sleep   - delay execution for some time
source  - run script from memory
test    - minimal test like /bin/sh
timer   - access the system timer
true    - do nothing, successfully
version - print monitor, compiler and linker version
zboot   - Boot bzImage

I guess the environment is interesting too:

boot > printenv
audio_codec_name=audio_codec="dummy"
boot_target_cmd=run do_flash_os;run do_probe_dfu;run do_compute_target;run mmc-bootargs;run load_kernel;zboot ${loadaddr}
bootargs_console=console=ttyMFD2 earlyprintk=ttyMFD2,keep
bootargs_debug=loglevel=4
bootargs_ethconfig=cdc
bootargs_target=multi-user
bootcmd=echo "Target:${target_name}"; run do_partition; run do_handle_bootargs_mode;
bootdelay=1
dfu_alt_info_ram=kernel ram ${loadaddr} 0x800000
dfu_alt_info_reset=reset ram 0x0 0x0
dfu_to_sec=3
do_audio_support=setenv audio_support platform_mrfld_audio.${audio_codec_name}
do_boot=run boot_target_cmd;
do_bootargs_rootfs=setenv bootargs_rootfs rootwait root=PARTUUID=${uuid_rootfs} rootfstype=ext4
do_compute_target=if itest.b ${first_install_retry} -gt ${first_install_max_retries} || itest.b ${ota_update_retry} -gt ${ota_update_max_retries}; then echo "Switch to Rescue target"; setenv bootargs_target rescue; saveenv; fi
do_dfu_alt_info_ifwi=setenv dfu_alt_info "ifwi${hardware_id} mmc 0 8192 mmcpart 1;ifwib${hardware_id} mmc 0 8192 mmcpart 2"
do_dfu_alt_info_mmc=setenv dfu_alt_info "ifwi${hardware_id} mmc 0 8192 mmcpart 1;ifwib${hardware_id} mmc 0 8192 mmcpart 2;u-boot0 part 0 1;u-boot-env0 part 0 2;u-boot1 part 0 3;u-boot-env1 part 0 4;boot part 0 7;rootfs part 0 8;update part 0 9;home part 0 10;vmlinuz fat 0 7;initrd fat 0 7"
do_dnx=setenv dfu_alt_info ${dfu_alt_info_ram};dfu 0 ram 0 ram;run bootcmd
do_fallback=echo "Unknown boot mode: $bootargs_mode"; env delete -f bootargs_mode; saveenv; echo "Resetting to default boot mode and reboot..."; reset;
do_flash=run do_force_flash_os;
do_flash_ifwi=run do_dfu_alt_info_ifwi ; dfu 0 mmc 0
do_flash_os=if itest.b ${do_flash_os_done} -eq 1 ; then echo "Flashing already done..." ; else run do_force_flash_os; fi
do_flash_os_done=1
do_flashall=run do_partition;run do_flash_ifwi;run do_flash_os
do_force_flash_os=run do_dfu_alt_info_mmc ; sleep 1 ; setenv do_flash_os_done 1 ; saveenv ; dfu 0 mmc 0
do_force_partition=echo "Partitioning using GPT"; gpt write mmc 0 ${partitions} ; mmc rescan; setenv do_partition_done 1 ; saveenv
do_handle_bootargs_mode=run do_preprocess_bootargs_mode; if itest.s $bootargs_mode == "ota" ; then run do_ota; fi; if itest.s $bootargs_mode == "boot" ; then run do_boot; fi; if itest.s $bootargs_mode == "flash"; then run do_flash; fi; run do_fallback; exit;
do_load_ota_scr=if fatload mmc 0:9 $ota_script_addr ota_update.scr ; then setenv ota_status 0 ; else setenv ota_status 1 ; fi
do_ota=run do_ota_init ; run do_load_ota_scr ; run do_source_ota_scr ; run do_ota_clean
do_ota_clean=saveenv ; reset
do_ota_init=setenv ota_status 1 ; env delete -f bootargs_mode
do_partition=if itest.b ${do_partition_done} -eq 1; then echo "Partitioning already done..."; else run do_force_partition ; fi
do_partition_done=1
do_preprocess_bootargs_mode=if env exists bootargs_mode ; then ; else setenv bootargs_mode "boot" ;fi;
do_probe_dfu=run do_dfu_alt_info_mmc ; dfu 0 mmc 0 $dfu_to_sec
do_source_ota_scr=if test $ota_status -eq 0 ; then if source $ota_script_addr ; then setenv ota_status 0 ; else setenv ota_status 2 ; fi ; fi
first_install_max_retries=3
first_install_retry=0
hardware_id=00
init_dfu=run do_dfu_alt_info_mmc ; saveenv
load_kernel=fatload mmc 0:7 ${loadaddr} vmlinuz
loadaddr=0x100000
mmc-bootargs=run do_bootargs_rootfs; run do_audio_support; setenv bootargs ${bootargs_rootfs} ${bootargs_console} ${bootargs_debug} g_multi.ethernet_config=${bootargs_ethconfig} systemd.unit=${bootargs_target}.target hardware_id=${hardware_id} g_multi.iSerialNumber=${serial#} g_multi.dev_addr=${usb0addr} ${audio_support}
ota_done=0
ota_script_addr=0x100000
ota_update_max_retries=3
ota_update_retry=0
partitions=uuid_disk=${uuid_disk};name=u-boot0,start=1MiB,size=2MiB,uuid=${uuid_uboot0};name=u-boot-env0,size=1MiB,uuid=${uuid_uboot_env0};name=u-boot1,size=2MiB,uuid=${uuid_uboot1};name=u-boot-env1,size=1MiB,uuid=${uuid_uboot_env1};name=factory,size=1MiB,uuid=${uuid_factory};name=panic,size=24MiB,uuid=${uuid_panic};name=boot,size=32MiB,uuid=${uuid_boot};name=rootfs,size=1536MiB,uuid=${uuid_rootfs};name=update,size=768MiB,uuid=${uuid_update};name=home,size=-,uuid=${uuid_home};
serial#=5b27aa44f006b1284d9d46891c9e77c7
stderr=serial
stdin=serial
stdout=serial
target_name=blank
usb0addr=02:00:86:9e:77:c7
uuid_boot=db88503d-34a5-3e41-836d-c757cb682814
uuid_disk=21200400-0804-0146-9dcc-a8c51255994f
uuid_factory=333a128e-d3e3-b94d-92f4-d3ebd9b3224f
uuid_home=f13a0978-b1b5-1a4e-8821-39438e24b627
uuid_panic=f20aa902-1c5d-294a-9177-97a513e3cae4
uuid_rootfs=012b3303-34ac-284d-99b4-34e03a2335f4
uuid_uboot0=d117f98e-6f2c-d04b-a5b2-331a19f91cb2
uuid_uboot1=8a4bb8b4-e304-ae48-8536-aff5c9c495b1
uuid_uboot_env0=25718777-d0ad-7443-9e60-02cb591c9737
uuid_uboot_env1=08992135-13c6-084b-9322-3391ff571e19
uuid_update=faec2ecf-8544-e241-b19d-757e796da607

Environment size: 4962/65531 bytes