commit 373a9b1c939ae8dc8f6582209942453837696af8
parent bfe582374d3031adca7efaa59322785f18b3f605
Author: parazyd <parazyd@dyne.org>
Date: Tue, 10 Oct 2017 19:52:41 +0200
add odroidc2-mainline.html.md
Diffstat:
3 files changed, 110 insertions(+), 1 deletion(-)
diff --git a/config.mk b/config.mk
@@ -10,4 +10,5 @@ PAGES = \
projects.html \
\
doc/index.html \
- doc/arm-ramdisk.html
+ doc/arm-ramdisk.html \
+ doc/odroidc2-mainline.html
diff --git a/doc/index.html.md b/doc/index.html.md
@@ -1,5 +1,6 @@
Knowledgebase
=============
+* [Mainline U-Boot on Odroid C2](odroidc2-mainline.html)
* [Setting up a sunxi board with a ramdisk and ATA over Ethernet rootfs
boot](arm-ramdisk.html)
diff --git a/doc/odroidc2-mainline.html.md b/doc/odroidc2-mainline.html.md
@@ -0,0 +1,107 @@
+Mainline U-Boot on Odroid C2
+============================
+
+Booting mainline u-boot on the Odroid C2 is fairly trivial, but
+unfortunately, we still require the binary blobs provided by hardkernel.
+This short guide should list all the steps needed in one place, for easy
+future reference.
+
+
+ARM64 Toolchain
+---------------
+
+I used a linaro aarch64 toolchain found at
+[https://releases.linaro.org/components/toolchain/binaries/latest/aarch64-linux-gnu/](https://releases.linaro.org/components/toolchain/binaries/latest/aarch64-linux-gnu/).
+
+Download it, extract it, and export `$PATH` and `$compiler` for easy use
+later on.
+
+ # mkdir odroidc2 && cd odroidc2
+ # wget ...
+ # tar xf ...
+ # export PATH="/path/to/toolchain/bin:$PATH"
+ # export compiler="aarch64-linux-gnu-"
+
+
+Compiling mainline u-boot
+-------------------------
+
+After extracting and preparing the env, we need to compile mainline
+u-boot. We can grab the official git repo:
+
+ # git clone git://git.denx.de/u-boot
+
+Go inside the repo, and compile it.
+
+ # make ARCH=arm CROSS_COMPILE=$compiler odroid-c2_defconfig
+ # make ARCH=arm CROSS_COMPILE=$compiler -j4
+ # mv u-boot.img ../ && cd ..
+
+This will provide us with `u-boot.img` we'll use later on.
+
+
+Providing hardkernel's binary blobs
+-----------------------------------
+
+Let's grab a tarball of hardkernel's u-boot repository. A tested
+revision is `205c7b3259559283161703a1a200b787c2c445a5`. We will also
+need `meson-tools` - where we find `amlbootsig`.
+
+ # wget -O hardkernel-uboot.tgz https://github.com/hardkernel/u-boot/archive/205c7b3259559283161703a1a200b787c2c445a5.tar.gz
+ # tar xf hardkernel-uboot.tgz
+ # mv u-boot-205c7b3259559283161703a1a200b787c2c445a5 hardkernel-uboot
+ # git clone https://github.com/afaerber/meson-tools
+ # cd meson-tools
+ # make
+ # cd ../hardkernel-uboot
+
+Now we have to compile and use the `fip_create` program to prepare our
+.bin files.
+
+ # make -C tools/fip_create
+ # tools/fip_create/fip_create --bl30 fip/gxb/bl30.bin --bl301 fip/gxb/bl301.bin --bl31 fip/gxb/bl31.bin --bl33 ../u-boot.bin fip.bin
+ # cat fip/gxb/bl2.package fip.bin > boot_new.bin
+ # ../meson-tools/amlbootsig boot_new.bin u-boot.img
+ # dd if=u-boot.img of=../u-boot.gxbb bs=512 skip=96
+ # cp sd_fuse/bl1.bin.hardkernel ../
+ # cd ..
+
+Now we have it ready, and we can proceed with the final step:
+
+
+Flashing this stuff to a microsd card
+-------------------------------------
+
+We should be in the directory where `bl1.bin.hardkernel` and
+`u-boot.gxbb` are. To "flash" this on our microsd card we will simply
+use `dd`, like always.
+
+ # dd if=bl1.bin.hardkernel of=/dev/mmcblk0 conv=fsync bs=1 count=422
+ # dd if=bl1.bin.hardkernel of=/dev/mmcblk0 conf=fsync bs=512 skip=1 seek=1
+ # dd if=u-boot.gxbb of=/dev/mmcblk0 conf=fsync bs=512 seek=97
+ # sync; sync; sync
+
+If this went well, all that is left is providing a `boot.scr`
+
+
+boot.scr
+--------
+
+**boot.cmd**:
+
+ setenv bootargs console=ttyS0,115200 console=ttyAML0,115200n8 init=/init root=/dev/mmcblk0p2 rw rootwait
+ setenv initrd_high "0xffffffff"
+ setenv fdt_high "0xffffffff"
+ load mmc 0 0x43000000 ${fdtfile} || load mmc 0 0x43000000 boot/${fdtfile}
+ load mmc 0 0x41000000 Image || load mmc 0 0x41000000 boot/Image
+ #load mmc 0 0x50000000 uInitrd
+ #booti 0x41000000 0x50000000 0x43000000
+ booti 0x41000000 0x43000000
+
+Create `boot.scr` out of it:
+
+ # mkimage -A arm -O linux -T script -C none -n "U-Boot boot script" -d boot.cmd boot.scr
+
+Copy the .dtb from your linux sources. It's found in arch/arm64/boot/dts:
+`meson-gxbb-odroidc2.dtb`. Of course, remember to copy your `Image` as
+well.
