-------- Original Message -------- Subject: Fwd: Fwd: Cross-Compiling for Armv7 Date: Wed, 09 Apr 2014 22:15:14 +1000 From: Robert Brown <rebrown@exemail.com.au> To: luv-beginners@luv.asn.au Following some research on the later kernels and the role of u-boot and dtsb I have used the following - but again without a successful boot: make -j5 ARCH=arm CROSS_COMPILE=/usr/bin/arm-linux-gnueabihf- menuconfig make -j5 ARCH=arm CROSS_COMPILE=/usr/bin/arm-linux-gnueabihf- LOADADDR=0x40008000 uImage dtbs make ARCH=arm CROSS_COMPILE=/usr/bin/arm-linux-gnueabihf- -j5 INSTALL_MOD_PATH=output modules make ARCH=arm CROSS_COMPILE=/usr/bin/arm-linux-gnueabihf- -j5 INSTALL_MOD_PATH=output modules_install put a copy of the created uImage and arch/arm/boot/sun4i-a10-a1000.dtb into the boot partition of the sdcard copy the created modules to the /lib/modules on the rootfs partition In case the existing boot.scr has some inconsistency I save this to boot.cmd: setenv bootargs console=ttyS0,115200 root=/dev/sda1 rootwait ro earlyprintk debug ext2load mmc 0 0x46000000 uImage ext2load mmc 0 0x49000000 sun4i-a10-a1000.dtb env set fdt_high ffffffff bootm 0x46000000 - 0x49000000 and run: mkimage -C none -A arm -T script -d boot.cmd boot.scr copy this boot.scr to the boot partition of the sdcard When it fails to boot there's not much chance of troubleshooting as I have not been able to get to the uboot prompt. Anyone got any thoughts? Thanks Rob -------- Original Message -------- Subject: Fwd: Cross-Compiling for Armv7 Date: Sat, 22 Mar 2014 11:02:26 +1100 From: Robert Brown <rebrown@exemail.com.au> To: luv-beginners@luv.asn.au Do I need to use u-boot to start uImage or can I just put a copy of it in the boot partition? Maybe that is where the failure to boot arises. Thanks -------- Original Message -------- Subject: Cross-Compiling for Armv7 Date: Thu, 20 Mar 2014 21:46:03 +1100 From: Robert Brown <rebrown@exemail.com.au> To: luv-beginners@luv.asn.au Hi Is anyone able to offer helpful tips or new directions with this: I am wanting to use a usb device with ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T on a MK802II mini pc using the Allwinner A10 cpu. This device requires modules rtl2830.ko, rtl2832.ko and dvb_usb_rtl28xxu. The second of these modules does not seem to exist without patches on kernel 3.4 but on a raspberry pi I have been successful using kernel 3.10.25+. Here is the relevant lsmod from the pi: r820t 16279 1 rtl2832 8020 1 dvb_usb_rtl28xxu 14333 1 dvb_usb_v2 14860 1 dvb_usb_rtl28xxu rc_core 16313 3 dvb_usb_rtl28xxu,dvb_usb_v2 rtl2830 7378 1 dvb_usb_rtl28xxu dvb_core 92797 3 rtl2830,rtl2832,dvb_usb_v2 However when I try to compile a kernel for the A10 with 3.10.25+ I have no success. If I use the raspi sources for the cross-compile: https://github.com/raspberrypi/linux/archive/rpi-3.10.y.tar.gz I get errors that seem unresolvable: e.g.: undefined reference to `v6wbi_flush_kern_tlb_range' If I use the sunxi kernel source: https://github.com/linux-sunxi/linux-sunxi/tree/reference-3.10 the compile completes without error and I get modules and a uImage file but the device won't boot I am using this as a guide: http://jas-hacks.blogspot.com.au/2012/10/hackberry-a10-compiling-kernel-armh... I have tried using various .config files as a starting point including the pi and from the earlier 3.4 kernel without success Does anyone have any experience in this area? Any help would be much appreciated. Thanks Rob