[U-Boot] [PATCH 09/10] keystone2: env: add env script for booting with an initramfs with firmware
Tom Rini
trini at konsulko.com
Fri Mar 11 18:08:43 CET 2016
On Wed, Mar 09, 2016 at 03:39:38PM +0530, Lokesh Vutla wrote:
> From: Murali Karicheri <m-karicheri2 at ti.com>
>
> This patch updates the env script to include a initramfs with firmware
> loaded and provided to kernel through second argument of bootz command
> during boot. Defined DEFAULT_FW_INITRAMFS_BOOT_ENV to have all of the
> required env variables and use it in evm specific config file.
>
> The K2 linux drivers for PCIe and NetCP (1G, 10G) requires serdes
> firmwares. These requires firmware to be available early through the boot
> process in some cases to satisfy firmware requests from driver. Hence use
> a small initramfs to provide the same and update boot env to accommodate
> this in the boot flow. This method is used when rootfs is nfs and ubifs.
> This fs contains just lib/firmware folder with all required firmware.
>
> When rootfs is on initramfs, then the filesystem has the firmware under
> lib/firmware and this early initramfs is not required and is not used.
>
> Signed-off-by: Murali Karicheri <m-karicheri2 at ti.com>
> Signed-off-by: Lokesh Vutla <lokeshvutla at ti.com>
Reviewed-by: Tom Rini <trini at konsulko.com>
--
Tom
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