Date: Sat, 26 Dec 2015 07:15:33 +0200 From: Stanislav Galabov <sgalabov@gmail.com> To: "Rodney W. Grimes" <freebsd@pdx.rh.CN85.chatusa.com> Cc: Willem Jan Withagen <wjw@digiware.nl>, "freebsd-mips@freebsd.org" <freebsd-mips@freebsd.org> Subject: Re: mt7620 works! Message-ID: <10F858B5-2F48-4E23-996A-E6D9663FEB46@gmail.com> In-Reply-To: <201512260057.tBQ0vcVO005566@pdx.rh.CN85.chatusa.com> References: <201512260057.tBQ0vcVO005566@pdx.rh.CN85.chatusa.com>
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> On 26.12.2015 г., at 2:57, Rodney W. Grimes <freebsd@pdx.rh.CN85.chatusa.com> wrote: > > ... >>> But if you're trying to build a kernel for the WiTi board (MT7621) you won't be able to as the MT7621 bits are still not in -head. >>> >>> The last commits by Adrian only support RT305x and introduce support for RT5350 (basic support) and MT7620. The MT7620 is substantially different than the MT7621, so it's not a straightforward thing to make it work (UART is different for one). >>> >>> I'll continue working on Mediatek/Ralink support in the new year, so hopefully things are going to get easier then. >> >> Sort of informative, but the page refers to 'oldlzma'. >> Which I suspect is needed otherwise Uboot starts complaining about >> during decompressing and aborts. > > Also I see in the page where some of the magic 0x80xxxxxx addresses come from, but where > did the magic number come from for these two commands: > > tftpboot 0x80800000 DIR-620/kernel.oldlzma.uboot > bootm 0x80800000 > > > -- > Rod Grimes rgrimes@freebsd.org 0x80800000 is u-boot's default value for the loadaddr environment variable on some Ralink/Mediatek boards. This is the address which is used for loading stuff via tftp for example. In any case, it could be any valid memory address, which wouldn't cause overwriting u-boot itself while loading a file (kernel image in this case) via tftp. U-boot will then properly relocate the loaded file to the address inside the image header before booting the kernel as part of executing the bootm command. I guess the page author didn't think it was necessary to add this information...
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