Hi Tim,
On Wed, 26 Mar 2014 15:25:33 +0100, Tim Sander <t...@krieglstein.org>
wrote:
> Hi
>
> I am currently trying to configure either Altera Soc and Xilinx Zynq to boot
> Linux in nonsecure-mode.
> This mail focusses on the Altera SOC.
>
> As soon as the u-boot switched to normal mode it seems there is a problem
> with code alignment handling?
> At least it seems the code which is running beforehand stops working in
> normal mode and stops in either
> data_abort or prefetch handler. It stopps working when it hits the call to
> stdio_devices[file]->puts(s); in console_puts (console.c:255).
>
> print *stdio_devices[file]
> $2 = {flags = 16978471, ext = 16978464,
> name = "$\022\003\001\202\022\003\001\360\031\003\001\020\060\220",
> <incomplete sequence \345>,
> start = 0xe92d4070, stop = 0xe2806010, putc = 0xe1530006, puts =
> 0xe1a04000, tstc = 0xe1a05001,
> getc = 0xe5810024, priv = 0x1a000007, list = { next = 0xe5831004, prev =
> 0xe5813000}}
>
> As there are unaligned addresses (putc?) in these function calls i have the
> impression that this is not working in
> normal mode but in secure mode.
>
> Unfortunatly i was not able to get the mainline u-boot to boot on the altera
> soc so i patched the altera release:
> git://git.rocketboards.org/u-boot-socfpga.git
> with the 1740999a39ea4217bf926002d10869c0d925a5dc aka socfpga_v2013.01.01-rel
> branch.
>
> As the altera u-boot release socfpga_v2013.01.01-rel is to old to have the
> CONFIG_ARMV7_NONSEC patches
> i cherry-picked the following patches:
> d4296887544ddf95808bfb62f312008f519efb7b extend non-secure switch to
> also go into HYP mode
> ba6a1698116da272f14c53a3ae41467cb7fc4372 add SMP support for non-secure
> switch
> bb975455650b1f36681de31a93ffe54952ed3a6b trigger non-secure state switch
> during bootm execution
> 1ef923851ab8ffcc4265fd991815b88d9c1f12d7 add C function to switch to
> non-secure state
> 16212b594f385bd594d5d316bf11b13c1186e3d7 add assembly routine to switch
> to non-secure state
> 45b940d6f9a9d4989452ea67480e299bfa51ee19 add secure monitor handler to
> switch to non-secure state
> d75ba503a972df09784f1a332ba356ef8b42a0a6 ARM: prepare armv7.h to be
> included from assembly source
>
> I also applied the attached hacked together patches to get the system running
> and fix up the stack pointer in
> normal mode as it pointed to 0.
>
> Best regards
> Tim
So this is not a patch for mainline U-Boot, right?
Amicalement,
--
Albert.
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