From: Tom Rini <trini@konsulko.com>
To: Dzmitry Sankouski <dsankouski@gmail.com>
Cc: u-boot@lists.denx.de
Subject: Re: [PATCH 1/3 v3] arm: init: save previous bootloader data
Date: Tue, 5 Apr 2022 14:00:19 -0400 [thread overview]
Message-ID: <20220405180019.GD9042@bill-the-cat> (raw)
In-Reply-To: <20220222184954.27024-2-dsankouski@gmail.com>
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On Tue, Feb 22, 2022 at 09:49:52PM +0300, Dzmitry Sankouski wrote:
> When u-boot is used as a chain-loaded bootloader (replacing OS kernel),
> previous bootloader leaves data in RAM, that can be reused.
>
> For example, on recent arm linux system, when chainloading u-boot,
> there are initramfs and fdt in RAM prepared for OS booting. Initramfs
> may be modified to store u-boot's payload, thus providing the ability to
> use chainloaded u-boot to boot OS without any storage support.
>
> Two config options added:
> - SAVE_PREV_BL_INITRAMFS_START_ADDR
> saves initramfs start address to 'prevbl_initrd_start_addr' environment
> variable
> - SAVE_PREV_BL_FDT_ADDR
> saves fdt address to 'prevbl_fdt_addr' environment variable
>
> Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
> Cc: Tom Rini <trini@konsulko.com>
Applied to u-boot/master, thanks!
--
Tom
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next prev parent reply other threads:[~2022-04-05 18:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-22 18:49 [PATCH 0/3] save prev bootloader data, when u-boot chainloaded Dzmitry Sankouski
2022-02-22 18:49 ` [PATCH 1/3 v3] arm: init: save previous bootloader data Dzmitry Sankouski
2022-04-05 18:00 ` Tom Rini [this message]
2022-02-22 18:49 ` [PATCH 2/3 v4] board: starqltechn: get board usable - add bootcmd and docs Dzmitry Sankouski
2022-04-05 18:00 ` Tom Rini
2022-02-22 18:49 ` [PATCH 3/3 v2] board: axy17lte: " Dzmitry Sankouski
2022-04-05 18:00 ` Tom Rini
-- strict thread matches above, loose matches on Subject: below --
2022-02-13 19:39 [PATCH 0/3] save prev bootloader data, when u-boot chainloaded Dzmitry Sankouski
2022-02-13 19:39 ` [PATCH 1/3 v3] arm: init: save previous bootloader data Dzmitry Sankouski
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