AM3358: Kernel boot issue

RAJU KUMARKHANIYA

Expert 1110 points

Part Number: AM3358

hello,

we have designed an am3358 based custom board with ref design of AM335x Starter Kit.

in starter kit emmc is not there we have added

i have modify

add pin mux of emmc in muc.c file and call from enable_board_pin_mux function

am335x-evmsk.dts inside

/ti-processor-sdk-linux-am335x-evm-06.01.00.08/board-support/linux-4.19.59+gitAUTOINC+5f8c1c6121-g5f8c1c6121/arch/arm/boot/dts$

and same modification done for u boot dts file and uboot detect emmc successfully

and im also able to write emmc using following thread

but while im change boot sequence jumper from sd card interface to emmc boot (i.e. boot from emmc) at that time board stop boot after Starting kernel ...

here i am attaching boot log

U-Boot SPL 2019.01 (Apr 04 2020 - 17:50:51 +0530)
Trying to boot from MMC2                
                                        
                                        
U-Boot 2019.01 (Apr 04 2020 - 17:50:51 +0530)
                                        
Aarohi WFH01                            
CPU  : AM335X-GP rev 2.1                
Model: TI AM335x EVM                    
DRAM:  1 GiB                            
NAND:  0 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
Loading Environment from FAT... <ethaddr> not set. Validating first E-fuse MAC
Net:   eth0: ethernet@4a100000                                                  
Warning: usb_ether MAC addresses don't match:                                   
Address in ROM is          de:ad:be:ef:00:01                                    
Address in environment is  04:79:b7:03:11:1b                                    
, eth1: usb_ether                                                               
Hit any key to stop autoboot:  0                                                
switch to partitions #0, OK                                                     
mmc1(part 0) is current device                                                  
Scanning mmc 1:1...                                                             
switch to partitions #0, OK                                                     
mmc1(part 0) is current device                                                  
SD/MMC found on device 1                                                        
4227584 bytes read in 718 ms (5.6 MiB/s)                                        
37166 bytes read in 8 ms (4.4 MiB/s)                                            
## Flattened Device Tree blob at 88000000                                       
   Booting using the fdt blob at 0x88000000                                     
   Loading Device Tree to 8fff3000, end 8ffff12d ... OK                         
                                                                                
Starting kernel ...

i have added uEnv.txt file in emmc boot partition

Fullscreen 4401.uEnv.txt Download

bootargs=console=ttyS0,115200n8 root=/dev/mmcblk0p2 rootfstype=ext3 rw rootwait ip=off lpj=3590144
bootcmd=mmc rescan; ext4load mmc 0:2 ${loadaddr} /boot/zImage; bootz ${loadaddr} - ${fdtaddr}
loadfdt=ext4load mmc 0:2 ${fdtaddr} /boot/am335x-evmsk.dtb
uenvcmd=boot

but still unable to find root cause of why kernel not coming up...?

over 6 years ago

0 Andreas Dannenberg over 6 years ago

TI__Guru 70502 points

RAJU KUMARKHANIYA said:

4227584 bytes read in 718 ms (5.6 MiB/s)

37166 bytes read in 8 ms (4.4 MiB/s)

Looks like both a Kernel and a DTB blob are being loaded. Can you confirm by looking/comparing the file sizes that indeed the files you want are getting loaded?

Then, can you interrupt the boot (keypress), and print the entire U-Boot environment (env print) and post it here.

Also can you confirm, the console UART you are using is awalys ttyS0, right?

Then, can you try to enable early console printing in the Kernel? This E2E post has a lot of details regarding this: https://e2e.ti.com/support/processors/f/791/p/798346/2954226#2954226

0 RAJU KUMARKHANIYA over 6 years ago in reply to Andreas Dannenberg

Expert 1110 points

hello Andreas Dannenberg,

first of all thank so much for your quick reply.

==> Can you confirm by looking/comparing the file sizes that indeed the files you want are getting loaded?

inside

/ti-processor-sdk-linux-am335x-evm-06.01.00.08/board-support/linux-4.19.59+gitAUTOINC+5f8c1c6121-g5f8c1c6121/arch/arm/boot/dts$

there is am335x-evmsk.dtb

the size of that file 38.3 KB

==> inside u-boot directory

/ti-processor-sdk-linux-am335x-evm-06.01.00.08/board-support/u-boot-2019.01+gitAUTOINC+029e4c009a-g029e4c009a/arch/arm/dts$

am335x-evmsk.dtb

51.5 KB

==> can you interrupt the boot (keypress), and print the entire U-Boot environment (env print) and post it here.

emmc boot time board printenv

Fullscreen 4503.printenv.txt Download

U-Boot SPL 2019.01 (Apr 04 2020 - 17:50:51 +0530)
Trying to boot from MMC2                
                                        
                                        
U-Boot 2019.01 (Apr 04 2020 - 17:50:51 +0530)
                                        
Aarohi WFH01                            
CPU  : AM335X-GP rev 2.1                
Model: TI AM335x EVM                    
DRAM:  1 GiB                            
NAND:  0 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
Loading Environment from FAT... <ethaddr> not set. Validating first E-fuse MAC
Net:   eth0: ethernet@4a100000                                                  
Warning: usb_ether MAC addresses don't match:                                   
Address in ROM is          de:ad:be:ef:00:01                                    
Address in environment is  04:79:b7:03:11:1b                                    
, eth1: usb_ether                                                               
Hit any key to stop autoboot:  0                                                
=> pr                                                                           
arch=arm                                                                        
args_mmc=run finduuid;setenv bootargs console=${console} ${optargs} root=PARTUU}
baudrate=115200                                                                 
board=am335x                                                                    
boot_a_script=load ${devtype} ${devnum}:${distro_bootpart} ${scriptaddr} ${pref}
boot_efi_binary=if fdt addr ${fdt_addr_r}; then bootefi bootmgr ${fdt_addr_r};ei
boot_extlinux=sysboot ${devtype} ${devnum}:${distro_bootpart} any ${scriptaddr}}
boot_fdt=try                                                                    
boot_fit=0                                                                      
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=mmc0 legacy_mmc0 mmc1 legacy_mmc1 nand0 pxe dhcp                   
bootcmd=if test ${boot_fit} -eq 1; then run update_to_fit; fi; run findfdt; rund
bootcmd_dhcp=run boot_net_usb_start; if dhcp ${scriptaddr} ${boot_script_dhcp};;
bootcmd_legacy_mmc0=setenv mmcdev 0; setenv bootpart 0:2 ; run mmcboot          
bootcmd_legacy_mmc1=setenv mmcdev 1; setenv bootpart 1:2 ; run mmcboot          
bootcmd_mmc0=setenv devnum 0; run mmc_boot                                      
bootcmd_mmc1=setenv devnum 1; run mmc_boot                                      
bootcmd_nand=run nandboot                                                       
bootcmd_pxe=run boot_net_usb_start; dhcp; if pxe get; then pxe boot; fi         
bootcount=1                                                                     
bootdelay=2                                                                     
bootdir=/boot                                                                   
bootenvfile=uEnv.txt                                                            
bootfile=zImage                                                                 
bootm_size=0x10000000                                                           
bootpart=0:2                                                                    
bootscript=echo Running bootscript from mmc${mmcdev} ...; source ${loadaddr}    
console=ttyO0,115200n8                                                          
cpu=armv7                                                                       
dfu_alt_info_emmc=rawemmc raw 0 3751936;boot part 1 1;rootfs part 1 2;MLO fat 11
dfu_alt_info_mmc=boot part 0 1;rootfs part 0 2;MLO fat 0 1;MLO.raw raw 0x100 0x1
dfu_alt_info_nand=SPL part 0 1;SPL.backup1 part 0 2;SPL.backup2 part 0 3;SPL.ba9
dfu_alt_info_ram=kernel ram 0x80200000 0x4000000;fdt ram 0x80f80000 0x80000;ram0
distro_bootcmd=for target in ${boot_targets}; do run bootcmd_${target}; done    
efi_dtb_prefixes=/ /dtb/ /dtb/current/                                          
envboot=mmc dev ${mmcdev}; if mmc rescan; then echo SD/MMC found on device ${mm;
eth1addr=04:79:b7:03:11:1b                                                      
ethaddr=04:79:b7:03:11:19                                                       
fdt_addr_r=0x88000000                                                           
fdtaddr=0x88000000                                                              
fdtcontroladdr=bdf398d8                                                         
fdtfile=undefined                                                               
findfdt=if test $board_name = A335BONE; then setenv fdtfile am335x-bone.dtb; fi 
finduuid=part uuid mmc ${bootpart} uuid                                         
fit_bootfile=fitImage                                                           
fit_loadaddr=0x90000000                                                         
get_overlaystring=for overlay in $overlay_files;do;setenv overlaystring ${overl;
ice_mii=mii                                                                     
importbootenv=echo Importing environment from mmc${mmcdev} ...; env import -t $}
init_console=if test $board_name = A335_ICE; then setenv console ttyO3,115200n8;
kernel_addr_r=0x82000000                                                        
load_efi_dtb=load ${devtype} ${devnum}:${distro_bootpart} ${fdt_addr_r} ${prefi}
loadaddr=0x82000000                                                             
loadbootenv=fatload mmc ${mmcdev} ${loadaddr} ${bootenvfile}                    
loadbootscript=load mmc ${mmcdev} ${loadaddr} boot.scr                          
loadfdt=load ${devtype} ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}            
loadfit=run args_mmc; run run_fit;                                              
loadimage=load ${devtype} ${bootpart} ${loadaddr} ${bootdir}/${bootfile}        
loadramdisk=load mmc ${mmcdev} ${rdaddr} ramdisk.gz                             
mmc_boot=if mmc dev ${devnum}; then setenv devtype mmc; run scan_dev_for_boot_pi
mmcboot=mmc dev ${mmcdev}; setenv devnum ${mmcdev}; setenv devtype mmc; if mmc ;
mmcdev=0                                                                        
mmcloados=run args_mmc; if test ${boot_fdt} = yes || test ${boot_fdt} = try; th;
mmcrootfstype=ext4 rootwait                                                     
mtdids=nand0=nand.0                                                             
mtdparts=mtdparts=nand.0:128k(NAND.SPL),128k(NAND.SPL.backup1),128k(NAND.SPL.ba)
nandargs=setenv bootargs console=${console} ${optargs} root=${nandroot} rootfst}
nandboot=echo Booting from nand ...; run nandargs; nand read ${fdtaddr} NAND.u-}
nandroot=ubi0:rootfs rw ubi.mtd=NAND.file-system,2048                           
nandrootfstype=ubifs rootwait=1                                                 
netargs=setenv bootargs console=${console} ${optargs} root=/dev/nfs nfsroot=${sp
netboot=echo Booting from network ...; setenv autoload no; dhcp; run netloadima}
netloadfdt=tftp ${fdtaddr} ${fdtfile}                                           
netloadimage=tftp ${loadaddr} ${bootfile}                                       
nfsopts=nolock                                                                  
partitions=uuid_disk=${uuid_gpt_disk};name=bootloader,start=384K,size=1792K,uui}
pxefile_addr_r=0x80100000                                                       
ramargs=setenv bootargs console=${console} ${optargs} root=${ramroot} rootfstyp}
ramboot=echo Booting from ramdisk ...; run ramargs; bootz ${loadaddr} ${rdaddr}}
ramdisk_addr_r=0x88080000                                                       
ramroot=/dev/ram0 rw                                                            
ramrootfstype=ext2                                                              
rdaddr=0x88080000                                                               
rootpath=/export/rootfs                                                         
run_fit=bootm ${fit_loadaddr}#${fdtfile}${overlaystring}                        
scan_dev_for_boot=echo Scanning ${devtype} ${devnum}:${distro_bootpart}...; for;
scan_dev_for_boot_part=part list ${devtype} ${devnum} -bootable devplist; env ee
scan_dev_for_efi=setenv efi_fdtfile ${fdtfile}; if test -z "${fdtfile}" -a -n "e
scan_dev_for_extlinux=if test -e ${devtype} ${devnum}:${distro_bootpart} ${prefi
scan_dev_for_scripts=for script in ${boot_scripts}; do if test -e ${devtype} ${e
scriptaddr=0x80000000                                                           
serial#=04:79:b7:03:11:19                                                       
soc=am33xx                                                                      
spiargs=setenv bootargs console=${console} ${optargs} root=${spiroot} rootfstyp}
spiboot=echo Booting from spi ...; run spiargs; sf probe ${spibusno}:0; sf read}
spibusno=0                                                                      
spiimgsize=0x362000                                                             
spiroot=/dev/mtdblock4 rw                                                       
spirootfstype=jffs2                                                             
spisrcaddr=0xe0000                                                              
static_ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}::off        
stderr=serial@44e09000                                                          
stdin=serial@44e09000                                                           
stdout=serial@44e09000                                                          
update_to_fit=setenv loadaddr ${fit_loadaddr}; setenv bootfile ${fit_bootfile}  
usb_boot=usb start; if usb dev ${devnum}; then setenv devtype usb; run scan_devi
usbnet_devaddr=de:ad:be:ef:00:01                                                
vendor=ti                                                                       
ver=U-Boot 2019.01 (Apr 04 2020 - 17:50:51 +0530)                               
                                                                                
Environment size: 10031/131068 bytes                                            
=>

==> can you confirm, the console UART you are using is awalys ttyS0, right?

ok i will conform and update here

inside mmcblk1p1 partition uEnv.txt file is

Fullscreen 2845.uEnv.txt Download

bootargs=console=ttyS0,115200n8 root=/dev/mmcblk0p2 rootfstype=ext3 rw rootwait ip=off lpj=3590144
bootcmd=mmc rescan; ext4load mmc 0:2 ${loadaddr} /boot/zImage; bootz ${loadaddr} - ${fdtaddr}
loadfdt=ext4load mmc 0:2 ${fdtaddr} /boot/am335x-evmsk.dtb
uenvcmd=boot

==> can you try to enable early console printing in the Kernel? This E2E post has a lot of details regarding this:

ok i will check and update status here

0 Andreas Dannenberg over 6 years ago in reply to RAJU KUMARKHANIYA

TI__Guru 70502 points

RAJU KUMARKHANIYA said:

/ti-processor-sdk-linux-am335x-evm-06.01.00.08/board-support/linux-4.19.59+gitAUTOINC+5f8c1c6121-g5f8c1c6121/arch/arm/boot/dts$

there is am335x-evmsk.dtb

the size of that file 38.3 KB

What I meant was, does the file U-Boot loads as 37,166 bytes in size, is that exact same in your Kernel tree? What is it size in bytes? If it is also 37,166 that would be an indication it is probably the right file (note that the file in the U-Boot tree is not relevant here).

same for the Kernel zImage.

RAJU KUMARKHANIYA said:

==> can you interrupt the boot (keypress), and print the entire U-Boot environment (env print) and post it here.

emmc boot time board printenv

4503.printenv.txt

That file was truncated at column 80. Not sure what terminal software you use but I'd recommend "picocom" directly from the Bash shell, usually you an copy & paste out from there without any such issues.

Regards, Andreas

0 RAJU KUMARKHANIYA over 6 years ago in reply to Andreas Dannenberg

Expert 1110 points

hello Andreas Dannenberg

thank you for your reply

i'm able to resolve my issue after common board file modification

thank You!..

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AM3358: Kernel boot issue