Re: [U-Boot] [RFC] Improve bootargs for IGEP boards.
Hi Tom, Thanks for the answer. 2013/7/18 Tom Rini tr...@ti.com: On Tue, Jul 16, 2013 at 10:00:16AM +0200, Enric Balletbo Serra wrote: [snip] o 2nd proposal: 4 partitions: SPL U-Boot U-Boot Environment Filesystem (ubifs): zImage + kernel modules + dtbs files + filesystem A slight change here would be 3 partitions 1) SPL (that covers the redundant locations as well) 2) U-Boot 3) UBI container of: env, redundant env and either filesystem with kernel+dtbs, or kernel and dtbs in their own volumes, I'm not sure which is better there honestly. But I did want to highlight that we support U-Boot env in the UBI container. This looks interesting, can you provide more information about that ? Should I remove CONFIG_ENV_ADDR variable ? Could you provide an example ? Thanks in advance. Enric -- Tom ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] [RFC] Improve bootargs for IGEP boards.
2013/7/23 Enric Balletbo Serra eballe...@gmail.com: Hi Tom, Thanks for the answer. 2013/7/18 Tom Rini tr...@ti.com: On Tue, Jul 16, 2013 at 10:00:16AM +0200, Enric Balletbo Serra wrote: [snip] o 2nd proposal: 4 partitions: SPL U-Boot U-Boot Environment Filesystem (ubifs): zImage + kernel modules + dtbs files + filesystem A slight change here would be 3 partitions 1) SPL (that covers the redundant locations as well) 2) U-Boot 3) UBI container of: env, redundant env and either filesystem with kernel+dtbs, or kernel and dtbs in their own volumes, I'm not sure which is better there honestly. But I did want to highlight that we support U-Boot env in the UBI container. This looks interesting, can you provide more information about that ? Should I remove CONFIG_ENV_ADDR variable ? Could you provide an example ? Ooops forget it ! I found the documentation about that in README. Thanks Thanks in advance. Enric -- Tom ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] [RFC] Improve bootargs for IGEP boards.
On Tue, Jul 16, 2013 at 10:00:16AM +0200, Enric Balletbo Serra wrote: [snip] o 2nd proposal: 4 partitions: SPL U-Boot U-Boot Environment Filesystem (ubifs): zImage + kernel modules + dtbs files + filesystem A slight change here would be 3 partitions 1) SPL (that covers the redundant locations as well) 2) U-Boot 3) UBI container of: env, redundant env and either filesystem with kernel+dtbs, or kernel and dtbs in their own volumes, I'm not sure which is better there honestly. But I did want to highlight that we support U-Boot env in the UBI container. -- Tom signature.asc Description: Digital signature ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
[U-Boot] [RFC] Improve bootargs for IGEP boards.
Now that all the IGEP boards have Device Tree support and uImage is deprecated in favour of zImage, maybe, it's time to rethink the default boot command. We can also use this to unify the different bootargs between IGEP0020/30/32 and IGEP0033 that now are a bit different. IMHO, basically, there are two uses cases that must complain the default bootargs: Booting from a SD-card and booting from Flash. Below, I present different options and I would like people opine to select the best. BOOT FROM SD-CARD o 1st proposal: Two partition with following files: - boot (FAT) : MLO + u-boot.img + zImage + dtb files + uEnv.txt - rootfs (ext2/3/4) : filesystem + kernel modules. The rootfs can mount the boot partition to /boot o 2nd proposal: Two partitions with following files: - boot (FAT) : MLO + u-boot.img - rootfs (ext2/3/4) : zImage + dtb files + uEnv.txt + kernel modules + filesystem BOOT FROM NAND: o 1st proposal: (the traditional layout) 5 partitions: SPL U-Boot U-Boot Environment Kernel (raw) Rootfs With a Device Tree kernel the problem is that we should use the kernel with appended dtb file or load the dtb file from rootfs. And if we need to load the dtb file from the rootfs, why not load the kernel also ? o 2nd proposal: 4 partitions: SPL U-Boot U-Boot Environment Filesystem (ubifs): zImage + kernel modules + dtbs files + filesystem So, what do you think is the best approach to be the default environment ? Better layouts ? Advantages - disadvantages for every layout ? Opinions are welcome. Thanks in advance, Enric ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
