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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: Values generated by the ViryaOS uboot-script-gen do not work correctly on the Chromebook Snow
I miscalculated MEMORY_START. If you try with: offset=$((240*1024*1024)) # this change in scripts/uboot-script-gen MEMORY_START="0x24000000" MEMORY_END="0x80000000" then it should use: tftpb 0x42000000 Linux tftpb 0x50000000 Xen tftpb 0x60000000 DTB which is very similar to what Chuck used. It might work. However, I noticed now that Chuck's last addess is lower than 0x60000000. I wonder if that is the issue? If we cannot exceed 0x60000000, then maybe I would try with: offset=$((120*1024*1024)) # this change in scripts/uboot-script-gen MEMORY_START="0x33000000" MEMORY_END="0x80000000" On Thu, 16 Nov 2023, Mario Marietto wrote: > It didn't work. This is the scr file generated. > > ext2load mmc 1:3 0x51000000 zImage-6.6.0-xen-iommu-dma-on-xen > ext2load mmc 1:3 0x60000000 xen-4.17-armhf.ub > ext2load mmc 1:3 0x61000000 exynos5250-snow.dtb > fdt addr 0x61000000 > fdt resize 1024 > fdt set /chosen \#address-cells <0x2> > fdt set /chosen \#size-cells <0x2> > fdt set /chosen xen,xen-bootargs "console=dtuart dtuart=serial0 dom0_mem=768 > dom0_max_vcpus=2 bootscrub=0 vwfi=native sched=null" > fdt mknod /chosen dom0 > fdt set /chosen/dom0 compatible "xen,linux-zimage" "xen,multiboot-module" > "multiboot,module" > fdt set /chosen/dom0 reg <0x0 0x51000000 0x0 0x87C200 > > fdt set /chosen xen,dom0-bootargs "console=tty earlycon=xen earlyprintk=xen > root=/dev/mmcblk1p4 rw rootwait clk_ignore_unused" > setenv fdt_high 0xffffffffffffffff > bootm 0x60000000 - 0x61000000 > > So,I ran : > > bash /boot/./uboot-script-gen -c /boot/xen-config -d . > > it says : > > Image Name: > Created: Wed Nov 15 23:55:40 2023 > Image Type: ARM Linux Kernel Image (uncompressed) > Data Size: 884744 Bytes = 864.01 KiB = 0.84 MiB > Load Address: 60000000 > Entry Point: 60000000 > Generated uboot script xen-stef.scr, to be loaded at address 0x42000000: > ext2load mmc 1:3 0x42000000 xen-stef.scr; source 0x42000000 > > ok,I've booted xen with the suggested address : > > ext2load mmc 1:3 0x42000000 xen-stef.scr; source 0x42000000 > > but it rebooted to the verification screen. > > NB : I have applied both your suggestions (offset + your new start and end > memory address. Maybe they auto exclude each other ?) > > On Thu, Nov 16, 2023 at 12:49 AM Stefano Stabellini <sstabellini@xxxxxxxxxx> > wrote: > On Wed, 15 Nov 2023, Chuck Zmudzinski wrote: > > On 11/14/2023 6:43 PM, Mario Marietto wrote: > > > I hope that the informations below are correct : > > > > I don't know that they are correct. I have not spent the necessary > time to > > determine what the correct values for MEMORY_START and MEMORY_END are > for > > the Chromebook we are using. I just presumed, probably incorrectly, > that > > the entire 2 GB memory is safe, but obviously that is not the case > with > > this Chromebook. Most likely, it requires a good understanding of the > > particular way booting is done on a Chromebook, which seems to be > different > > from other devices. > > > > I plan to eventually look into finding values for MEMORY_START and > MEMORY_END > > sothe uboot-script-gen script computes usable values for loading Xen > and dom0 > > on this Chromebook in the script, but I might not get to that task > immediately. > > I plan to look at it within the next week or so. > > A couple of suggestions. I noticed that the addresses you chose have a > higher alignment compared to the one chosen by Imagebuilder. > Imagebuilder uses 2MB: > > offset=$((2*1024*1024)) > > I would think that a 2MB alignment should be sufficient, but you can > increase the alignment chosen by Imagebuilder simply by changing > "offset" at the top of uboot-script-gen. You seem to be used a 240MB > offset: > > offset=$((240*1024*1024)) > > The other suggestion is about MEMORY_START and MEMORY_END. Looking at > the addresses you picked by hand, the following you should give you very > similar results: > > MEMORY_START=0x33000000 > MEMORY_END=0x80000000 > > > > > - the imagebuilder config file : > > > > > > MEMORY_START="0x0" > > > MEMORY_END="0x80000000" > > > LOAD_CMD="ext2load mmc 1:3" > > > BOOT_CMD="bootm" > > > DEVICE_TREE="exynos5250-snow.dtb" > > > XEN="xen-4.17-armhf" > > > XEN_CMD="console=dtuart dtuart=serial0 dom0_mem=1152M > dom0_max_vcpus=2 bootscrub=0 vwfi=native sched=null" > > > DOM0_KERNEL="zImage-6.6.0-xen-iommu-dma-on-xen" > > > DOM0_CMD="console=tty earlycon=xen earlyprintk=xen > root=/dev/mmcblk1p4 rw rootwait clk_ignore_unused" > > > UBOOT_SOURCE="xen.source" > > > UBOOT_SCRIPT="xen.scr" > > > > > > xen.source : (that does not work) > > > > > > mmc dev 1 > > > ext2load mmc 1:3 0xE00000 zImage-6.6.0-xen-iommu-dma-on-xen > > > ext2load mmc 1:3 0x1800000 xen-4.17-armhf.ub > > > ext2load mmc 1:3 0x1A00000 exynos5250-snow.dtb > > > fdt addr 0x1A00000 > > > fdt resize 1024 > > > fdt set /chosen \#address-cells <0x2> > > > fdt set /chosen \#size-cells <0x2> > > > fdt set /chosen xen,xen-bootargs "console=dtuart dtuart=serial0 > dom0_mem=1152M dom0_max_vcpus=2 bootscrub=0 vwfi=native > sched=null" > > > fdt mknod /chosen dom0 > > > fdt set /chosen/dom0 compatible "xen,linux-zimage" > "xen,multiboot-module" "multiboot,module" > > > fdt set /chosen/dom0 reg <0x0 0xE00000 0x0 0x87C200 > > > > fdt set /chosen xen,dom0-bootargs "console=tty earlycon=xen > earlyprintk=xen root=/dev/mmcblk1p4 rw rootwait > clk_ignore_unused" > > > setenv fdt_high 0xffffffffffffffff > > > bootm 0x1800000 - 0x1A00000 > > > > > > xen.source : (created by chuck and that works) > > > > > > mmc dev 1 > > > ext2load mmc 1:3 0x42000000 zImage-6.6.0-xen-iommu-dma-on-xen > > > ext2load mmc 1:3 0x51000000 xen-4.17-armhf-armmp-0x51004000.ub > > > ext2load mmc 1:3 0x5ffec000 exynos5250-snow.dtb > > > fdt addr 0x5ffec000 > > > fdt resize 1024 > > > fdt set /chosen \#address-cells <0x2> > > > fdt set /chosen \#size-cells <0x2> > > > fdt set /chosen xen,xen-bootargs "console=dtuart dtuart=serial0 > dom0_mem=1152M dom0_max_vcpus=2 bootscrub=0 vwfi=native > sched=null" > > > fdt mknod /chosen dom0 > > > fdt set /chosen/dom0 compatible "xen,linux-zimage" > "xen,multiboot-module" "multiboot,module" > > > fdt set /chosen/dom0 reg <0x0 0x42000000 0x0 0x87C200 > > > > fdt set /chosen xen,dom0-bootargs "console=tty1 root=/dev/mmcblk1p4 > rw rootwait clk_ignore_unused --no-log" > > > bootm 0x51000000 - 0x5ffec000 > > > > > > all the values that you see in this conf. files have been > calculated by chuck by hand,because the values generated by the > imagebuilder are wrong. The only value that's well calculated by the > imagebuilder is 0x87C200 > > > > > > - the size of all the binaries specified in the imagebuilder config > file : > > > > > > exynos5250-snow.dtb = 46.6 KiB (47,769 byte) > > > zImage-6.6.0-xen-iommu-dma-on-xen = 8.5 MiB (8,897,024 byte) > > > > > > > > > > > > On Wed, Nov 15, 2023 at 12:17 AM Stefano Stabellini > <sstabellini@xxxxxxxxxx <mailto:sstabellini@xxxxxxxxxx>> wrote: > > > > > > Hi Mario, > > > > > > I think we misunderstood each other :-) > > > > > > MEMORY_START-MEMORY_END is not supposed to be computed: it is > supposed > > > to come from the memory node in device tree tree (/memory) of > the > > > platform. The idea is that you should not have to do any > computations, > > > but only reuse the same address range specified there. > > > > > > Similarly in regards to "please post the size of all the > binaries", > > > this is just for debugging, so that I can see if there are any > bugs with > > > uboot-script-gen. I cannot debug the script unless I figure out > what the > > > problem is and the only way I can do that is with the binary > sizes and > > > redoing all the steps by hand. > > > > > > The expected outcome is that once we resolve the problem you > should be > > > able to use uboot-script-gen without any additional computation > needed. > > > > > > Of course using static values is also OK. > > > > > > > > > On Wed, 15 Nov 2023, Mario Marietto wrote: > > > > ---> uboot-script-gen assumes that the memory range specified > by MEMORY_START-MEMORY_END is valid and correct. > > > > > > > > Actually Chuck chose 0 as MEMORY_START and 0x800000 as > MEMORY_END and these are stable values,they don't change. If > you ask me to calculate > > > > those values,it means that we need to compute these values. I > imagine that to calculate these values is not easy. > > > > > > > > ---> To debug this kind of issues please post the size of all > the binaries specified in the imagebuilder config file > > > > > > > > I imagine that I should also calculate those values. And > again,I see a complication. > > > > > > > > I'm realizing that the method used by Chuck is easier because > he uses stable values. In the end,there aren't any > calculations to do and > > > > since I'm looking for an easier method,not a more complicated > one,I think that Chuck's method is good as is. > > > > > > > > On Tue, Nov 14, 2023 at 11:51 PM Stefano Stabellini > <sstabellini@xxxxxxxxxx <mailto:sstabellini@xxxxxxxxxx>> wrote: > > > > Hi Mario, > > > > > > > > It is difficult to know how to change uboot-script-gen > if we don't know > > > > why it is currently going wrong. > > > > > > > > uboot-script-gen assumes that the memory range > specified by > > > > MEMORY_START-MEMORY_END is valid and correct. > > > > > > > > So if you specified a valid and correct memory range in > your config file > > > > (0x41e00000-0x60000000) why is it failing? > > > > > > > > The only thing uboot-script-gen does is choosing > aligned addresses > > > > within the MEMORY_START-MEMORY_END range. The addresses > are supposed not > > > > to overlap (meaning the initrd will not overwrite part > of the kernel > > > > when loaded). If the issue is a bug in > uboot-script-gen, such as the > > > > generated addresses overlap or they are not aligned, > then we can fix the > > > > alignment or overlap bug. To debug this kind of issues > please post: > > > > - the imagebuilder config file > > > > - the generate boot.source script > > > > - the size of all the binaries specified in the > imagebuilder config file > > > > > > > > On the other hand if 0x41e00000-0x60000000 is not a > safe memory range to > > > > use, then you need to specify a different memory range. > > > > > > > > Cheers, > > > > > > > > Stefano > > > > > > > > > > > > > > > > On Mon, 13 Nov 2023, Mario Marietto wrote: > > > > > Hello. > > > > > > > > > > I'm trying to find an easier way to the problem that > you can read here : > > > > > > > > > > > https://github.com/mobile-virt/u-boot-chromebook-xe303c12/tree/chromebook/xen#starting-a-domu-guest > > <https://github.com/mobile-virt/u-boot-chromebook-xe303c12/tree/chromebook/xen#starting-a-domu-guest> > > > > > > > > > > where Chuck says : > > > > > > > > > > 6. Create the u-boot shell commands that will be > used to boot Xen and dom0. > > > > > > > > > > Create a file in /home/user (or any other directory) > named bootxen.source with these contents : > > > > > > > > > > > > > > > mmc dev 1 && mmc rescan 1 > > > > > ext2load mmc 1:3 0x42000000 zImage-6.1.61-stb-xen-cbe+ > > > > > ext2load mmc 1:3 0x51000000 > xen-4.17-armhf-armmp-0x51004000.ub > > > > > ext2load mmc 1:3 0x5ffec000 > exynos5250-snow-6.1.61-stb-xen-cbe+.dtb > > > > > fdt addr 0x5ffec000 > > > > > fdt resize 1024 > > > > > fdt set /chosen \#address-cells <0x2> > > > > > fdt set /chosen \#size-cells <0x2> > > > > > fdt set /chosen xen,xen-bootargs "console=dtuart > dtuart=serial0 dom0_mem=1G dom0_max_vcpus=2 bootscrub=0 > vwfi=native" > > > > > fdt mknod /chosen dom0 > > > > > fdt set /chosen/dom0 compatible "xen,linux-zimage" > "xen,multiboot-module" "multiboot,module" > > > > > fdt set /chosen/dom0 reg <0x0 0x42000000 0x0 0x7D7200 > > > > > > > fdt set /chosen xen,dom0-bootargs "console=tty1 > root=/dev/mmcblk1p4 rw rootwait clk_ignore_unused" > > > > > bootm 0x51000000 - 0x5ffec000 > > > > > > > > > > The hex value 0x7D7200 is the size of the > zImage-6.1.61-stb-xen-cbe+ file, and that value is computed from > the > > > > uboot-script-gen script > > > > > available from here : > > > > > > > > > > > > > > > https://gitlab.com/ViryaOS/imagebuilder > <https://gitlab.com/ViryaOS/imagebuilder> > > > > > > > > > > > > > > > This is the interesting point : > > > > > > > > > > > > > > > Please note that most of the other values in the > script generated by the ViryaOS uboot-script-gen do not work > correctly with > > > > the Chromebook > > > > > Snow, but the script does correctly calculate the > size of the dom0 Linux kernel image. > > > > > > > > > > > > > > > Some time ago Stefano suggested to put the values > below for MEMORY_START and MEMORY_END inside the xen-config > file : > > > > > > > > > > > > > > > nano xen-config file : > > > > > > > > > > > > > > > MEMORY_START="0x41e00000" > > > > > MEMORY_END="0x60000000" > > > > > LOAD_CMD="ext2load mmc 1:3" > > > > > BOOT_CMD="bootm" > > > > > DEVICE_TREE="exynos5250-snow.dtb" > > > > > XEN="xen-4.17-armhf" > > > > > XEN_CMD="console=dtuart dtuart=serial0 dom0_mem=768M > dom0_max_vcpus=2 bootscrub=0 vwfi=native sched=null" > > > > > DOM0_KERNEL="zImage-6.6.0-xen-dma-mapping" > > > > > DOM0_CMD="console=tty earlycon=xen earlyprintk=xen > root=/dev/mmcblk1p4 rw rootwait clk_ignore_unused" > > > > > UBOOT_SOURCE="xen.source" > > > > > > > > > > > > > > > bash ./uboot-script-gen -c xen-config -d . > > > > > > > > > > > > > > > Image Name: > > > > > Created: Thu Nov 2 20:59:24 2023 > > > > > Image Type: ARM Linux Kernel Image (uncompressed) > > > > > Data Size: 884744 Bytes = 864.01 KiB = 0.84 MiB > > > > > Load Address: 42c00000 > > > > > Entry Point: 42c00000 > > > > > > > > > > > > > > > Generated uboot script xen.scr, to be loaded at > address 0x42000000: > > > > > ext2load mmc 1:3 0x42000000 xen.scr; source 0x42000000 > > > > > > > > > > > > > > > and I tried to boot Xen and Linux 6.6 as dom0 : > > > > > > > > > > SMDK5250 # mmc dev 1 > > > > > SMDK5250 # ext2load mmc 1:3 0x42000000 xen.scr; > source 0x42000000 > > > > > but it did not work : it reboots on the verification > screen. > > > > > > > > > > -- > > > > > Mario. > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > Mario. > > > > > > > > > > > > > > > > > > > > -- > > > Mario. > > > > > > -- > Mario. > >
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