Date: Sun, 11 Dec 2016 19:29:53 +0200 From: Daniel Braniss <danny@cs.huji.ac.il> To: Ganbold Tsagaankhuu <ganbold@gmail.com> Cc: arm@freebsd.org Subject: Re: ubldr, was Re: dtb printout Message-ID: <2660E67D-10E4-4680-B824-EBF138FBC3FF@cs.huji.ac.il> In-Reply-To: <CAGtf9xPfLAgUaUZ4ivJxesXvJ_NQ0Y1usuqBQ_=%2BQjk8YEDw5w@mail.gmail.com> References: <7FD12DD6-B390-4EF3-811B-391798410BC0@cs.huji.ac.il> <1480950103.1889.251.camel@freebsd.org> <93729768-D887-4568-8686-FE691A881BC6@cs.huji.ac.il> <CAGtf9xPfLAgUaUZ4ivJxesXvJ_NQ0Y1usuqBQ_=%2BQjk8YEDw5w@mail.gmail.com>
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> On 11 Dec 2016, at 6:09 PM, Ganbold Tsagaankhuu <ganbold@gmail.com> = wrote: >=20 >=20 >=20 > On Tue, Dec 6, 2016 at 5:17 PM, Daniel Braniss <danny@cs.huji.ac.il = <mailto:danny@cs.huji.ac.il>> wrote: >=20 > > On 5 Dec 2016, at 17:01, Ian Lepore <ian@freebsd.org = <mailto:ian@freebsd.org>> wrote: > > > > On Mon, 2016-12-05 at 15:48 +0200, Daniel Braniss wrote: > >> Hi, > >> the short version: > >> is there a way to obtain the dtb from the kernel? > >> > >> the longer version: > >> I am developing on several different arm boards, rpi, rpi2, = orangepi- > >> one, orange-pc, to mention > >> a few, and each one has a different u-boot, ubldr, dtb, and I keep > >> loosing track :-( > >> I find myself too often wondering which ddb file got loaded. > >> > >> cheers, > >> danny > > > > First: each one does NOT have a different ubldr. All ubldr.bin = files > > are the same, they're not board-specific anymore. (The elf = versions, > > ubldr without the .bin, may have a different load address in the elf > > header, but other than that, they're identical too and can actually = be > > loaded at any address.) > > > > To see the contents of the dtb, use ofwdump. The output is not > > especially pretty. There is a manpage for it. > > > > To just get a quick reminder of which file was loaded, create a > > /boot/loader.rc.local (<-- .rc not .conf) that contains > > > > ubenv import fdtfile fdt_file > > > > Then in the running system you can use kenv and you'll see > > > > uboot.fdtfile=3D"bcm2835-rpi-b-rev2.dtb" > > > > Unfortunately, some u-boots use fdtfile, some use fdt_file. Grrr. > > > > You can, of course, use that ubenv import thing to pull any variable > > from the uboot environment into the kernel environment. If you just > > say ubenv import without naming a variable, you get all the vars > > (including vars that contain scripts, which is kind of messy). > > > > =E2=80=94 Ian > > >=20 > as usual, I get more than I bargained for :-) > on rpi adding ubenv import worked, but on orange/allwinner I got a = =E2=80=98syntax error=E2=80=99, > I tried to upgrade the ubldr, but so far i get: >=20 > U-Boot SPL 2016.09 (Dec 05 2016 - 15:02:38) > DRAM: 1024 MiB > Trying to boot from MMC1 >=20 >=20 > U-Boot 2016.09 (Dec 05 2016 - 15:02:38 +0200) Allwinner Technology >=20 > CPU: Allwinner H3 (SUN8I 1680) > Model: Xunlong Orange Pi PC > I2C: ready > DRAM: 1 GiB > WARNING: Caches not enabled > MMC: SUNXI SD/MMC: 0 > reading u-boot.env >=20 > ** Unable to read "u-boot.env" from mmc0:1 ** > Using default environment >=20 > In: serial > Out: serial > Err: serial > Net: phy interface0 > eth0: ethernet@1c30000 > starting USB... > USB0: USB EHCI 1.00 > USB1: USB OHCI 1.0 > USB2: USB EHCI 1.00 > USB3: USB OHCI 1.0 > USB4: USB EHCI 1.00 > USB5: USB OHCI 1.0 > scanning bus 0 for devices... 1 USB Device(s) found > scanning bus 2 for devices... 1 USB Device(s) found > scanning bus 4 for devices... 1 USB Device(s) found > Hit any key to stop autoboot: 0 > Booting from: mmc 0 ubldr.bin > reading ubldr.bin > 223912 bytes read in 53 ms (4 MiB/s) > ## No elf image at address 0x42000000 > ## Starting application at 0x42000000 ... >=20 > Did ubldr work for you? > I feel like I have same problem: >=20 > Booting from: mmc 0 ubldr.bin > reading ubldr.bin > 228276 bytes read in 67 ms (3.2 MiB/s) > ## No elf image at address 0x42000000 > ## Starting application at 0x42000000 ... >=20 > Ganbold >=20 > =20 the latest one hangs, just like with you. I=E2=80=99m using an older ubldr >=20 > _______________________________________________ > freebsd-arm@freebsd.org <mailto:freebsd-arm@freebsd.org> mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-arm = <https://lists.freebsd.org/mailman/listinfo/freebsd-arm>; > To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org = <mailto:freebsd-arm-unsubscribe@freebsd.org>"
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