From: Stefano Babic <sbabic@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 1/2] arm: mxs: Adjust the load address of U-Boot and SPL for HAB
Date: Tue, 01 Apr 2014 10:15:50 +0200 [thread overview]
Message-ID: <533A75B6.7090104@denx.de> (raw)
In-Reply-To: <1394046074-6389-1-git-send-email-marex@denx.de>
On 05/03/2014 20:01, Marek Vasut wrote:
> When using HAB, there are additional special requirements on the placement of
> U-Boot and the U-Boot SPL in memory. To fullfill these, this patch moves the
> U-Boot binary a little further from the begining of the DRAM, so the HAB CST
> and IVT can be placed in front of the U-Boot binary. This is necessary, since
> both the U-Boot and the IVT must be contained in single CST signature. To
> make things worse, the IVT must be concatenated with one more entry at it's
> end, that is the length of the entire CST signature, IVT and U-Boot binary
> in memory. By placing the blocks in this order -- CST, IVT, U-Boot, we can
> easily align them all and then produce the length field as needed.
>
> As for the SPL, on i.MX23/i.MX28, the SPL size is limited to 32 KiB, thus
> we place the IVT at 0x8000 offset, CST right past IVT and claim the size
> is correct. The HAB library accepts this setup.
>
> Finally, to make sure the vectoring in SPL still works even after moving
> the SPL from 0x0 to 0x1000, we add a small function which copies the
> vectoring code and tables to 0x0. This is fine, since the vectoring code
> is position independent.
>
> Signed-off-by: Marek Vasut <marex@denx.de>
> Cc: Stefano Babic <sbabic@denx.de>
> ---
Applied to u-boot-imx, thanks !
Best regards,
Stefano Babic
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next prev parent reply other threads:[~2014-04-01 8:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-05 19:01 [U-Boot] [PATCH 1/2] arm: mxs: Adjust the load address of U-Boot and SPL for HAB Marek Vasut
2014-03-05 19:01 ` [U-Boot] [PATCH 2/2] arm: mxs: Add support for generating signed BootStream Marek Vasut
2014-04-01 8:16 ` Stefano Babic
2014-04-01 8:15 ` Stefano Babic [this message]
-- strict thread matches above, loose matches on Subject: below --
2014-04-03 17:12 [U-Boot] [PATCH 1/2] arm: mxs: Adjust the load address of U-Boot and SPL for HAB Marek Vasut
2014-04-04 9:39 ` Stefano Babic
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