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Denis 'GNUtoo' Carikli, 05/18/2020 02:41 AM

Bootloader interfaces

Device Bootloader cmdline from boot.img cmdline from bootloader environment Compatible with upstream Linux Flashing protocols
N/A upstream u-boot ? Yes Yes * DFU
* Fastboot
* Thor1
* Other?
N/A upstream Barebox ? Yes Yes * DFU
* FAstboot
* Other?
Galaxy S (GT-I9000) GTI9000Bootloader ? * Thor1
Galaxy SII (GT-I9100) GTI9100Bootloader Probably not * Thor1
Galaxy SII (GT-I9100G_CHN_CHN) GTI9100GBootloader ? * Very unreliable2 Thor1
Galaxy Nexus (GT-I9250) I9250Bootloader used ignored ? * Reliable3 Thor1
* Fastboot
Galaxy SIII (GT-I9300)
Galaxy SIII 4G (GT-I9305)
Galaxy Note II (GT-N7100)
Galaxy Note II 4G (GT-N7105)
MidasBootloader ignored used No:
* Doesn't clear the data cache before booting Linux
* Has the MMU setup when booting Linux
* Somewhat reliable4 Thor
Galaxy Note (GT-N7000) GTIN7000Bootloader ? * Thor

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 over 3 years ago · 30 revisions

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