[beagleboard] Can't activate UART on custom BBB board
Hi ! I made a card which is the exact copy of the BBB architecture (same CPU, same RAM chip, same power supply) but without HDMI and flash memory chips (to meet size requirements). With Robert Nelson's advices, I've build a Debian Jessie image without board ID checking and I succeed in booting on it (thanks again Robert !) Now I'd like to activate UART1 but I can't. I've tried to install overlays with https://github.com/beagleboard/bb.org-overlays and put at the end of /boot/uEnv.txt capemgr.enable_partno=BB-UART1 like I did with a real BBB but the answer of dmesg | grep tty is [0.00] Kernel command line: console=ttyO0,115200n8 quiet > root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M quiet > cape_universal=enable > [0.000308] WARNING: Your 'console=ttyO0' has been replaced by 'ttyS0' > [3.842582] 44e09000.serial: ttyS0 at MMIO 0x44e09000 (irq = 155, > base_baud = 300) is a 8250 > [3.843036] console [ttyS0] enabled > [7.687412] systemd[1]: Created slice system-serial\x2dgetty.slice. > [7.704938] systemd[1]: Created slice system-getty.slice. Do you have any idea what's wrong ? Thanks -- 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/16e5bfa1-6b56-4aca-ae54-db0a95b43d3a%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] Install Debian Jessie on a custom BB based system
Hi ! I made a card which is the exact copy of the BBB architecture (same CPU, same RAM chip, same power supply) but without HDMI and flash memory chips (to meet size requirements). I want to install Jessie on this system but the SD card don't boot (S2 pressed or not) with U-Boot. CCC appears without the SD card and disappears when I plug it. Furthermore, when I try to boot an Angström distribution, my card boot on, so I think there's no hardware issue. I understood that the Angström image has SPL and U-Boot image on a FAT partition. On boot, the am3358 find the SPL and can execute U-Boot. I don't find any SPL file on the Jessie image so I think that the am3358 on BB has his NAND flashed with SPL and don't need any external SPL file (this is why Angstrom and Jessie boot on BB but only Angstrom boot on my system). Actually, I try to build a Jessie image according to this git : https://github.com/beagleboard/image-builder with --bbb-old-bootloader-in-emmc parameter (even if I'm not sure it'll embed SPL). Is there something wrong in my thinking ? Must I find a way to flash the internal NAND (U-Boot says that there's no NAND device found..) ? or searching a way to include full U-Boot on a Jessie image is a good way to solve my problem ? Thanks Elie -- 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/c00c2ea1-d7e2-45d6-aa96-648146d51c88%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] Install Debian Jessie on custom BB based system
Hi ! I made a card which is the exact copy of the BBB architecture (same CPU, same RAM chip, same power supply) but without HDMI and flash memory chips (to meet size requirements). I want to install Jessie on this system but the SD card don't boot (S2 pressed or not) with U-Boot. CCC appears without the SD card and disappears when I plug it. Furthermore, when I try to boot an Angström distribution, my card boot on, so I think there's no hardware issue. I understood that the Angström image has SPL and U-Boot image on a FAT partition. On boot, the am3358 find the SPL and can execute U-Boot. I don't find any SPL file on the Jessie image so I think that the am3358 on BB has his NAND flashed with SPL and don't need any external SPL file (this is why Angstrom and Jessie boot on BB but only Angstrom boot on my system). Actually, I try to build a Jessie image according to this git : https://github.com/beagleboard/image-builder with --bbb-old-bootloader-in-emmc parameter (even if I'm not sure it'll embed SPL). Is there something wrong in my thinking ? Must I find a way to flash the internal NAND (U-Boot says that there's no NAND device found..) ? or searching a way to include full U-Boot on a Jessie image is a good way to solve my problem ? Thanks Elie -- 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/6952bf30-b03b-4e62-b51d-1af87394713d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
