Difference between revisions of "Firmware Upgrade"
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*Avoid brick | *Avoid brick | ||
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Disadvantages: | Disadvantages: | ||
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= U-boot = | = U-boot = | ||
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It could be entered by issuing "reboot ums/fastboot/rockusb" from linux, <del>or add the [https://github.com/rockchip-linux/u-boot/blob/release/board/rockchip/kylin_rk3036/kylin_rk3036.c#L34 board-spefic key-detection ]code</del> | It could be entered by issuing "reboot ums/fastboot/rockusb" from linux, <del>or add the [https://github.com/rockchip-linux/u-boot/blob/release/board/rockchip/kylin_rk3036/kylin_rk3036.c#L34 board-spefic key-detection ]code</del> | ||
| − | <small>(Common key detect support is added after 20171218, now the board can enter rockusb mode by | + | <small>(Common key detect support is added after 20171218, now the board can enter rockusb mode by pressing recovery key)</small>. |
| − | It's also possible to do network/usb-disk upgrade in u-boot | + | It's also possible to do network/usb-disk upgrade in u-boot. |
Belows are the ''advantages'' and disadvantages of using u-boot. | Belows are the ''advantages'' and disadvantages of using u-boot. | ||
Latest revision as of 04:17, 21 December 2017
Overall
This guide provides information which will help you choose a firmware upgrade way.
MASKROM
MASKROM is the simplest way.
Belows are the advantages and disadvantages of using maskrom.
Advantages:
- Avoid brick
- Simple
Disadvantages:
- Need a maskrom key
Support update from
- USB OTG
U-boot
Rockchip mainline u-boot have support various upgrade ways, such as rockusb/fastboot/ums, each of them could be used.
It could be entered by issuing "reboot ums/fastboot/rockusb" from linux, or add the board-spefic key-detection code
(Common key detect support is added after 20171218, now the board can enter rockusb mode by pressing recovery key).
It's also possible to do network/usb-disk upgrade in u-boot.
Belows are the advantages and disadvantages of using u-boot.
Advantages:
- Common
Disadvantages:
- Must be familiar with u-boot
Support update from
- USB OTG
- USB DISK
- Network
Linux
Both yocto and debian use deb as the package manager, so firmware upgrade could be done by deb installation.
(SDK build scripts can pack kernel/u-boot in deb）
Advantages:
- standard
- user-friendly
Disadvantages:
- could be brick
SD-Card Recovery
By changing boot order in u-boot, it's possible to let u-boot load kernel and rootfs from sd-card first.
We could use it to create a sd-card recovery image. When the board boot into sd-card, the init script run and install kernel/u-boot debian packages, which burn firmware to eMMC.
Advantages:
- Convenient
Disadvantages:
- Slow
Initramfs/Recovery
Advantages:
- Powerful
Disadvantages:
- Slow
