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Update some instructions

This commit is contained in:
Aditya Prayoga 2018-10-05 12:17:40 +08:00
parent d1e3a0d90a
commit 94b44862c9
1 changed files with 54 additions and 15 deletions
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docs/spi.md
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@ -22,34 +22,45 @@ Refer to [U-Boot](/uboot) page to build the image.
2. Bootable U-Boot on microSD card.
### Using Linux
### Generic Linux
!!! info
Concurrent access on SPI NOR and SATA drive can lead to unstable SATA. The following instructions has taken this issue into consideration and workaround it by disabling the SATA temporary.
Put u-boot binaries on home folder and rename it as **u-boot-spi.bin**.
Download boot_spi_en.scr from [here](/files/software/boot_spi_en.scr) and put it to / and then reboot the system
1) Put u-boot binaries on home folder and rename it as **u-boot-spi.bin**.
2) Download boot_spi_en.scr from [here](/files/software/boot_spi_en.scr) and put it to /boot/ and then reboot the system
```
sudo wget https://wiki.kobol.io/files/software/boot_spi_en.scr -O /boot_spi_en.scr
sudo wget https://wiki.kobol.io/files/software/boot_spi_en.scr -O /boot/boot_spi_en.scr
sudo reboot
```
Switch to Helios4 serial console. Press any key to cancel the autoboot and execute these commands
!!! info
Source code of boot_spi_en.scr can be downloaded from [here](/files/software/boot_spi_en.cmd)
3) Switch to Helios4 serial console. Press any key to cancel the autoboot and execute these commands
```
setenv script_name "boot_spi_en.scr"
setenv script_name "/boot/boot_spi_en.scr"
stage_boot mmc_scr
```
It will boot to Linux with modified device tree.
- - -
Log in to Helios4, verify whether mtdblock0 is exist using **lsblk**, and write the u-boot to SPI flash using this command
4) Log in to Helios4, verify whether mtdblock0 is exist using **lsblk**
```
lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
mtdblock0 31:0 0 4M 0 disk
mmcblk0 179:0 0 14.9G 0 disk
└─mmcblk0p1 179:1 0 14.8G 0 part /
```
5) Write the u-boot to SPI flash using this command
```
sudo dd if=~/u-boot-spi.bin of=/dev/mtdblock0
```
Set DIP switches SW1 to SPI Boot
6) Set DIP switches SW1 to SPI Boot
![Boot from SPI](/img/hardware/dipswitch_boot_spinor.png)
@ -61,9 +72,29 @@ BootROM - 1.73
Booting from SPI flash
```
## Set Up U-Boot
### Armbian
Add U-Boot ENV variable.
!!! info
Preliminary
1) Open /boot/armbianEnv.txt and modify *spi_workaround="on"*
2) Reboot the system to apply the change
3) Login to the system and run
```
sudo nand-sata-install
```
4) Select option **5 Install the bootloader to SPI Flash**
## Set Up U-Boot Environment
!!! info
The prebuilt SPI image has been configured to automatically run /boot/boot.scr and /boot.scr on microSD or USB drive. There is no need to set up u-boot environment to boot Armbian.
Add U-Boot ENV variables to prevent U-Boot to relocate fdt and initrd into RAM address that is not accessible by kernel, and set the correct device tree name for Helios4 board
```
setenv fdt_high 0xffffffff
@ -72,7 +103,7 @@ setenv fdtfile armada-388-helios4.dtb
saveenv
```
To automatically boot Linux on microSD card
- To automatically boot Linux on microSD card
```
setenv bootargs '${console} root=/dev/mmcblk0p1 rootwait'
@ -80,6 +111,14 @@ setenv bootcmd 'ext2load mmc 0:1 ${kernel_addr_r} /boot/zImage; ext2load mmc 0:1
saveenv
```
!!! info
The prebuilt SPI image has been configured to automatically run /boot/boot.scr and /boot.scr on microSD. There is no need to configure u-boot to boot Armbian on microSD.
- To automatically boot Linux on USB drive (assume UUID=1234)
```
setenv bootargs '${console} root=UUID=1234 rootwait'
setenv bootcmd 'ext2load usb 0:1 ${kernel_addr_r} /boot/zImage; ext2load usb 0:1 ${ramdisk_addr_r} /boot/uInitrd; ext2load usb 0:1 ${fdt_addr} /boot/dtb/${fdtfile}; bootz ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr}'
saveenv
```
## Moving Rootfs to Other Device
Please refer to [Armbian](/armbian) page to move the rootfs from microSD to USB using *nand-sata-install* utility.