I have a beaglebone with Debian Os. I have created 2 partitions. The first partition is a boot partition while another partition contains a Debian Image. I am using uboot as a bootloader.
First Partition consists of the following files:- 1. uEnv.txt 2. boot/ ( Directory with kernel, dtb and other stuff to load the OS ) Second Partition:- 1. Debian OS Image My uEnv.txt Script:- ##Rename as: uEnv.txt to override old bootloader in eMMC ##These are needed to be compliant with Angstrom's 2013.06.20 u-boot. rdaddr=0x88080000 initrd_high=0xffffffff fdt_high=0xffffffff ##These are needed to be compliant with Debian 2014-05-14 u-boot. ##loadximage=echo debug: [/boot/vmlinuz-${uname_r}] ... ; load mmc 0:1 ${loadaddr} /boot/vmlinuz-${uname_r} ##loadxfdt=echo debug: [/boot/dtbs/${uname_r}/${fdtfile}] ... ;load mmc 0:1 ${fdtaddr} /boot/dtbs/${uname_r}/${fdtfile} loadxrd=echo debug: [/boot/initrd.img-${uname_r}] ... ; load mmc 0:1 ${rdaddr} /boot/initrd.img-${uname_r}; setenv rdsize ${filesize} loaduEnvtxt=load mmc 0:1 ${loadaddr} /boot/uEnv.txt ; env import -t ${loadaddr} ${filesize}; check_dtb=if test -n ${dtb}; then setenv fdtfile ${dtb};fi; check_uboot_overlays=if test -n ${enable_uboot_overlays}; then setenv enable_uboot_overlays ;fi; ##loadall=run loaduEnvtxt; run check_dtb; run check_uboot_overlays; run loadximage; run loadxrd; run loadxfdt; loadall=run loaduEnvtxt; run check_dtb; run check_uboot_overlays; run loadxrd; rootpart=0:2 flagpart=0:4 bootdir=/boot bootfile=vmlinuz-4.14.71-ti-r80 console=ttyO0,115200n8 fdtaddr=0x88000000 fdtfile=am335x-bonegreen-wireless.dtb loadaddr=0x82000000 mmcroot=/dev/mmcblk0p2 ro mmcrootfstype=ext4 rootwait mmcargs=setenv bootargs console=${console} ${optargs} ${cape_disable} ${cape_enable} root=${mmcroot} rootfstype=${mmcrootfstype} ${cmdline} loadfdt=echo debug: [/boot/dtbs/${uname_r}/${fdtfile}] ... ;load mmc 0:1 ${fdtaddr} /boot/dtbs/${uname_r}/${fdtfile} loadimage=echo debug: [/boot/vmlinuz-${uname_r}] ... ; load mmc 0:1 ${loadaddr} /boot/vmlinuz-${uname_r} boot_three=setenv rootpart 0:3; setenv mmcroot /dev/mmcblk0p3 ro findroot=\ if test -e mmc $flagpart three; then \ if test -e mmc $flagpart three_ok; then \ run boot_three; \ elif test ! -e mmc $flagpart three_tried; then \ fatwrite mmc $flagpart $loadaddr three_tried 4; \ run boot_three; \ fi; \ elif test -e mmc $flagpart two; then \ if test ! -e mmc $flagpart two_ok; then \ if test -e mmc $flagpart two_tried; then \ run boot_three; \ else \ fatwrite mmc $flagpart $loadaddr two_tried 4; \ fi; \ fi; \ fi; uenvcmd=\ run loadall run findroot echo Using root partition ${rootpart} if run loadfdt; then \ echo Loaded ${fdtfile}; \ if run loadimage; then \ run mmcargs; \ bootz ${loadaddr} - ${fdtaddr}; \ fi; \ fi; 2. Logs at Boot: Log 1: U-Boot SPL 2018.09-00002-g0b54a51eee (Sep 10 2018 - 19:41:39 -0500) Trying to boot from MMC2 Loading Environment from EXT4... ** Unable to use mmc 0:1 for loading the env ** U-Boot 2018.09-00002-g0b54a51eee (Sep 10 2018 - 19:41:39 -0500), Build: jenkins-github_Bootloader-Builder-65 CPU : AM335X-GP rev 2.1 I2C: ready DRAM: 512 MiB No match for driver 'omap_hsmmc' No match for driver 'omap_hsmmc' Some drivers were not found Reset Source: Power-on reset has occurred. RTC 32KCLK Source: External. MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 Loading Environment from EXT4... ** Unable to use mmc 0:1 for loading the env ** Board: BeagleBone Black <ethaddr> not set. Validating first E-fuse MAC BeagleBone Black: Model: SeeedStudio BeagleBone Green Wireless: BeagleBone: cape eeprom: i2c_probe: 0x54: BeagleBone: cape eeprom: i2c_probe: 0x55: BeagleBone: cape eeprom: i2c_probe: 0x56: BeagleBone: cape eeprom: i2c_probe: 0x57: Net: eth0: MII MODE Could not get PHY for cpsw: addr 0 cpsw, usb_ether Press SPACE to abort autoboot in 2 seconds board_name=[A335BNLT] ... board_rev=[GW1A] ... switch to partitions #0, OK mmc0 is current device SD/MMC found on device 0 switch to partitions #0, OK mmc0 is current device Scanning mmc 0:1... 60067 bytes read in 6 ms (9.5 MiB/s) gpio: pin 56 (gpio 56) value is 0 gpio: pin 55 (gpio 55) value is 0 gpio: pin 54 (gpio 54) value is 0 gpio: pin 53 (gpio 53) value is 1 switch to partitions #0, OK mmc0 is current device gpio: pin 54 (gpio 54) value is 1 Checking for: /uEnv.txt ... 2698 bytes read in 2 ms (1.3 MiB/s) gpio: pin 55 (gpio 55) value is 1 Loaded environment from /uEnv.txt Importing environment from mmc ... Checking if uenvcmd is set ... gpio: pin 56 (gpio 56) value is 1 Running uenvcmd ... Running custom script 2113 bytes read in 3 ms (687.5 KiB/s) debug: [/boot/initrd.img-4.14.71-ti-r80] ... 4799493 bytes read in 302 ms (15.2 MiB/s) Completed the loadall process Using root partition 0:2 debug: [/boot/dtbs/4.14.71-ti-r80/am335x-bonegreen-wireless.dtb] ... 60067 bytes read in 8 ms (7.2 MiB/s) Loaded am335x-bonegreen-wireless.dtb debug: [/boot/vmlinuz-4.14.71-ti-r80] ... 10416640 bytes read in 653 ms (15.2 MiB/s) ## Flattened Device Tree blob at 88000000 Booting using the fdt blob at 0x88000000 Using Device Tree in place at 88000000, end 88011aa2 Starting kernel ... [ 0.000748] timer_probe: no matching timers found [ 0.783079] wkup_m3_ipc 44e11324.wkup_m3_ipc: could not get rproc handle [ 1.073564] omap_voltage_late_init: Voltage driver support not added [ 1.080543] PM: Cannot get wkup_m3_ipc handle Log 2: U-Boot SPL 2018.09-00002-g0b54a51eee (Sep 10 2018 - 19:41:39 -0500) Trying to boot from MMC2 Loading Environment from EXT4... ** Unable to use mmc 0:1 for loading the env ** U-Boot 2018.09-00002-g0b54a51eee (Sep 10 2018 - 19:41:39 -0500), Build: jenkin s-github_Bootloader-Builder-65 CPU : AM335X-GP rev 2.1 I2C: ready DRAM: 512 MiB No match for driver 'omap_hsmmc' No match for driver 'omap_hsmmc' Some drivers were not found Reset Source: Power-on reset has occurred. RTC 32KCLK Source: External. MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 Loading Environment from EXT4... ** Unable to use mmc 0:1 for loading the env ** Board: BeagleBone Black <ethaddr> not set. Validating first E-fuse MAC BeagleBone Black: Model: SeeedStudio BeagleBone Green Wireless: BeagleBone: cape eeprom: i2c_probe: 0x54: BeagleBone: cape eeprom: i2c_probe: 0x55: BeagleBone: cape eeprom: i2c_probe: 0x56: BeagleBone: cape eeprom: i2c_probe: 0x57: Net: eth0: MII MODE Could not get PHY for cpsw: addr 0 cpsw, usb_ether Press SPACE to abort autoboot in 2 seconds board_name=[A335BNLT] ... board_rev=[GW1A] ... switch to partitions #0, OK mmc0 is current device SD/MMC found on device 0 switch to partitions #0, OK mmc0 is current device Scanning mmc 0:1... 60067 bytes read in 5 ms (11.5 MiB/s) gpio: pin 56 (gpio 56) value is 0 gpio: pin 55 (gpio 55) value is 0 gpio: pin 54 (gpio 54) value is 0 gpio: pin 53 (gpio 53) value is 1 switch to partitions #0, OK mmc0 is current device gpio: pin 54 (gpio 54) value is 1 Checking for: /uEnv.txt ... 2695 bytes read in 2 ms (1.3 MiB/s) gpio: pin 55 (gpio 55) value is 1 Loaded environment from /uEnv.txt Importing environment from mmc ... Checking if uenvcmd is set ... gpio: pin 56 (gpio 56) value is 1 Running uenvcmd ... Running custom script 2113 bytes read in 3 ms (687.5 KiB/s) debug: [/boot/initrd.img-4.14.71-ti-r80] ... 4799493 bytes read in 302 ms (15.2 MiB/s) Checking if client_ip is set ... Checking for: /boot.scr ... Checking for: /boot/boot.scr ... Checking for: /boot/uEnv.txt ... gpio: pin 55 (gpio 55) value is 1 2113 bytes read in 3 ms (687.5 KiB/s) Loaded environment from /boot/uEnv.txt Checking if uname_r is set in /boot/uEnv.txt... gpio: pin 56 (gpio 56) value is 1 Running uname_boot ... loading /boot/vmlinuz-4.14.71-ti-r80 ... debug: [/boot/vmlinuz-4.14.71-ti-r80] ... 10416640 bytes read in 653 ms (15.2 MiB/s) debug: [enable_uboot_overlays=1] ... debug: [enable_uboot_cape_universal=1] ... debug: [uboot_base_dtb_univ=am335x-bonegreen-wireless-uboot-univ.dtb] ... uboot_overlays: [uboot_base_dtb=am335x-bonegreen-wireless-uboot-univ.dtb] ... uboot_overlays: Switching too: dtb=am335x-bonegreen-wireless-uboot-univ.dtb ... debug: [/boot/dtbs/4.14.71-ti-r80/am335x-bonegreen-wireless-uboot-univ.dtb] ... 156290 bytes read in 14 ms (10.6 MiB/s) uboot_overlays: [fdt_buffer=0x60000] ... uboot_overlays: loading /lib/firmware/BB-UART4-00A0.dtbo ... 1075 bytes read in 4 ms (261.7 KiB/s) uboot_overlays: loading /lib/firmware/BB-UART1-00A0.dtbo ... 1075 bytes read in 4 ms (261.7 KiB/s) uboot_overlays: loading /lib/firmware/BB-I2C2-00A0.dtbo ... 1152 bytes read in 3 ms (375 KiB/s) uboot_overlays: loading /lib/firmware/BB-BONE-eMMC1-01-00A0.dtbo ... 1440 bytes read in 4 ms (351.6 KiB/s) uboot_overlays: loading /lib/firmware/BB-BBGW-WL1835-00A0.dtbo ... 4839 bytes read in 4 ms (1.2 MiB/s) uboot_overlays: loading /lib/firmware/BB-ADC-00A0.dtbo ... 711 bytes read in 4 ms (172.9 KiB/s) uboot_overlays: loading /lib/firmware/AM335X-PRU-RPROC-4-14-TI-00A0.dtbo ... 3513 bytes read in 3 ms (1.1 MiB/s) loading /boot/initrd.img-4.14.71-ti-r80 ... 4799493 bytes read in 302 ms (15.2 MiB/s) debug: [console=ttyO0,115200n8 bone_capemgr.uboot_capemgr_enabled=1 root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M net.ifnames=0 quiet] ... debug: [bootz 0x82000000 0x88080000:493c05 88000000] ... ## Flattened Device Tree blob at 88000000 Booting using the fdt blob at 0x88000000 reserving fdt memory region: addr=88000000 size=88000 Using Device Tree in place at 88000000, end 8808afff Starting kernel ... [ 0.002042] timer_probe: no matching timers found [ 1.135609] wkup_m3_ipc 44e11324.wkup_m3_ipc: could not get rproc handle [ 1.486101] omap_voltage_late_init: Voltage driver support not added [ 1.493075] PM: Cannot get wkup_m3_ipc handle åmount: mounting /dev/mmcblk0p1 on /root failed: Invalid argument mount: mounting /dev on /root/dev failed: No such file or directory mount: mounting /dev on /root/dev failed: No such file or directory mount: mounting /run on /root/run failed: No such file or directory run-init: current directory on the same filesystem as the root: error 0 Target filesystem doesn't have requested /sbin/init. run-init: current directory on the same filesystem as the root: error 0 run-init: current directory on the same filesystem as the root: error 0 run-init: current directory on the same filesystem as the root: error 0 run-init: current directory on the same filesystem as the root: error 0 run-init: current directory on the same filesystem as the root: error 0 No init found. Try passing init= bootarg. I am facing a scenario When I add ; \ this before my run loadall and other commands in the uEnv script it is working properly and booting me to partition 2 But it is not loading my UART port. ( Refer log 1 ) But When I remove ; \ from the uEnv.txt uboot is trying to boot me from the first partition and as I don't have OS on the first partition it is failing. My UART Port are loading properly ( Refer log 2 ) *Question: * How can I boot from partition and load my uart port? what am I missing? -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/4137b10c-4ea5-4088-acdd-994856424942%40googlegroups.com. 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