dtux__mageia4arm/platforms/bananaPro/README.md

Banana Pro SBC
==========

Short
-----
* [Board Informations](SBC_INFO)
* [U-Boot](UBOOT_INFO)
* [Kernel](KERNEL_INFO)

<a id="SBC_INFO"/>
# About the Banana Pro SBC from LeMaker

## External links
http://wiki.lemaker.org/BananaPro/Pi:Building_u-boot,_script.bin_and_linux-kernel#Building_the_kernel
http://wiki.lemaker.org/BananaPro/Pi:Setting_up_the_bootable_SD_card
https://sites.google.com/site/manisbutareed/bringing-my-beagles-to-heel/selected-annotated-u-boot-commands
https://linux-sunxi.org/Mainline_Kernel_Howto
https://linux-sunxi.org/Manual_build_howto#Setting_up_the_boot_partition
https://stackoverflow.com/questions/28891221/uenv-txt-vs-boot-scr
https://github.com/linux-sunxi/u-boot-sunxi/wiki

## LeMaker BPS (board package support)
git clone --recursive https://github.com/LeMaker/lemaker-bsp.git
./fex2bin ../sunxi-boards/sys_config/a20/BananaPro.fex ../../mageia4arm/bananaPro/script.bin

<a id="UBOOT_INFO"/>
# About U-Boot
The mainline U-Boot is used for this port.
## Mainline
```
CONFIG_PATH=~/workspaces/mageia4arm/platforms/bananaPro
git clone https://gitlab.denx.de/u-boot/u-boot
cd u-boot
make CROSS_COMPILE=arm-linux-gnu- Bananapro_defconfig
cp ${CONFIG_PATH}/UBOOT.config ./.config
#Just modify few unimportant things, like prompt, name, ...
make ARCH=arm CROSS_COMPILE=arm-linux-gnu- -j8 
make ARCH=arm CROSS_COMPILE=arm-linux-gnu-
#cp ./u-boot.dtb ${CONFIG_PATH}/sun7i-a20-bananapro.dtb
cp -f ./u-boot.dtb ${CONFIG_PATH}/u-boot.dtb
cp -f ./arch/arm/dts/sun7i-a20-bananapro.dtb ${CONFIG_PATH}/sun7i-a20-bananapro.dtb
cp -f ./u-boot-sunxi-with-spl.bin ${CONFIG_PATH}/u-boot-sunxi-with-spl.bin
#Inside "specialFunctions.sh"
#dd if=${CONFIG_PATH}/u-boot-sunxi-with-spl.bin of=${DEVICE} bs=1024 seek=8

echo '
setenv KERNEL_FILE /boot/vmlinuz
setenv INIT_FILE /boot/initrd.img
#setenv DTB_FILE /boot/sun7i-a20-bananapro.dtb
setenv DTB_FILE /boot/u-boot.dtb

setenv KERNEL_ADDR 0x40008000
#setenv INIT_ADDR 0x45000000
setenv INIT_ADDR -
setenv DTB_ADDR 0x48000000

ext4load mmc 0:1 ${KERNEL_ADDR} ${KERNEL_FILE}
#ext4load mmc 0:1 ${INIT_ADDR} ${INIT_FILE}
ext4load mmc 0:1 ${DTB_ADDR} ${DTB_FILE}

setenv bootargs console=ttyS0,115200 disp.screen0_output_mode=EDID:1024x768p50 hdmi.audio=EDID:0 root=/dev/mmcblk0p1 rootfstype=ext4 elevator=deadline rootwait

#printenv
bootz ${KERNEL_ADDR} ${INIT_ADDR} ${DTB_ADDR}

#Compile boot.scr : mkimage -C none -A arm -T script -d "${CONFIG_PATH}/boot.cmd" "${CONFIG_PATH}/boot.scr"
' >${CONFIG_PATH}/boot.cmd
```

mkimage -C none -A arm -T script -d ${CONFIG_PATH}/boot.cmd ${CONFIG_PATH}/boot.scr

## UBoot Sunxi From LeMaker
Obsolet, see 'LeMaker BPS (board package support)'.

## UBoot Sunxi
Generic u-boot for sunxi
```
git clone https://github.com/linux-sunxi/u-boot-sunxi
make CROSS_COMPILE=arm-linux-gnu- Bananapro_config
make CROSS_COMPILE=arm-linux-gnu- -j8
make CROSS_COMPILE=arm-linux-gnu-
#Need network support to give the MAC address.
#Do not activate boot timing.
#Default conf use bootz and dtb tree.
```

## Default LeMaker script
```
setenv bootargs console=ttyS0,115200 noinitrd 
disp.screen0_output_mode=EDID:1280x720p50 init=/init
root=/dev/mmcblk0p2 rootwait panic=10 ${extra}
fatload mmc 0 0x43000000 script.bin 
fatload mmc 0 0x48000000 uImage 
bootm 0x48000000
```

## DTB from Linux Mainline
```
git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git --depth=1
make ARCH=arm CROSS_COMPILE=arm-linux-gnu- sunxi_defconfig
ARCH=arm CROSS_COMPILE=arm-linux-gnu- make -j8 dtbs
cp ./arch/arm/boot/dts/sun7i-a20-bananapro.dtb ./sun7i-a20-bananapro.dtb
```

<a id="KERNEL_INFO"/>
# About the Kernel

Not Written.

## Generate symlink
```
#Generating a symbolic relative link to the "last" kernel :
ln -r -s ./vmlinuz-5.2.13-desktop-2.mga7 ./vmlinuz
rm -f ./vmlinuz && ln -r -s ./vmlinuz-5.3.1-desktop-2.mga7 ./vmlinuz
```