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BootloaderInterfaces » History » Revision 39

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Denis 'GNUtoo' Carikli, 05/18/2020 02:58 AM


Bootloader interfaces

Device Bootloader cmdline from boot.img cmdline from bootloader environment Compatible with upstream Linux Flashing protocols Image formats filesystems
N/A upstream u-boot ? Yes Yes * DFU
* Fastboot
* Thor1
* Other?
* Android Boot.img files
* U-boot uImages
* RAW / zImage
* Other
Yes, various
N/A upstream Barebox ? Yes Yes * DFU
* FAstboot
* Other?
* Android Boot.img files ?
* U-boot uImages
* RAW / zImage
* Other
Yes, various
Galaxy S (GT-I9000) GTI9000Bootloader ? * Thor1 * RAW / zImage RAW, KERNEL partition only
Galaxy SII (GT-I9100) GTI9100Bootloader Probably not * Thor1 * RAW / zImage RAW, ? partition only
Galaxy SII (GT-I9100G_CHN_CHN) GTI9100GBootloader ? * Very unreliable2 Thor1 ? RAW, KERNEL partition only
Galaxy Nexus (GT-I9250) I9250Bootloader used ignored ? * Reliable3 Thor1
* Fastboot
* boot.img boot and recovery partitions only
Galaxy SIII (GT-I9300)
Galaxy SIII 4G (GT-I9305)
Galaxy Note II (GT-N7100)
Galaxy Note II 4G (GT-N7105)
MidasBootloader ignored used No * Somewhat reliable4 Thor1 * boot.img RAW, BOOT and RECOVERY partitions only
Galaxy Note (GT-N7000) GTIN7000Bootloader ? * Thor1 * RAW / zImage RAW, KERNEL partition only

1 Thor is the protocol used by Heimdall, Odin, u-boot and several nonfree bootloaders. u-boot has a free software

2 It didn't work on GNUtoo desktop computer at all, while it worked fine on his laptop. With the stock Android 2.6.3 bootloader you could also end up stuck on the PC screen without a computer where heimdall works fine.

3 Under IO (disk or SSD) load, a computer can easily flash SYSTEM or even DATA partitions with heimdall.

4 Under IO (disk or SSD) load, a computer typically fails at flashing SYSTEM or big DATA partitions with heimdall. Boot and recovery partitions are typically fine though.

See also

  • UART: How to get the serial console. Very useful to interact with the bootloader and see boot logs.
  • IsorecRecoveryIssue: An issue affecting the bootloaders of the Galaxy SII (GT-I9100), Galaxy Note (GT-N7000), Galaxy S II (GT-I9100G)

Updated by Denis 'GNUtoo' Carikli almost 4 years ago · 39 revisions

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