From: Stephen Warren <swarren@nvidia.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 1/2] tegra2: Always build with USE_PRIVATE_LIBGCC=yes.
Date: Thu, 05 Jan 2012 12:40:45 -0700 [thread overview]
Message-ID: <4F05FCBD.2040207@nvidia.com> (raw)
In-Reply-To: <20120105191614.2732FB6F26@gemini.denx.de>
On 01/05/2012 12:16 PM, Wolfgang Denk wrote:
> In message <4F05D596.6030900@nvidia.com> you wrote:
...
>> The libraries included in the toolchain are built for the ARMv7 CPUs,
>
> SO this is not the right tool chain for the job. Ecactly what I said.
>
>> and hence fail to operate correctly when used by the portion of U-Boot
>> which runs on the ARMv4 CPU, presumably due to ISA differences. IIRC,
>> there are overrides in the U-Boot build process such that some/all of
>> U-Boot is built so it'll run on ARMv4 OK, which is why using libgcc
>> built by U-Boot solves this.
>
> No, this is NOT a solution, it is a workaround for an inappropriate
> toolchain. If you want to build code for an armv4t system, you must
> use a tool chain that supports it.
But we don't want to generate code for ARMv4 in general, but rather
ARMv7 as the toolchain does. Only a tiny part of the code needs to be
built for ARMv4, and in general we want to benefit from using ARMv7.
--
nvpublic
next prev parent reply other threads:[~2012-01-05 19:40 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-17 10:04 [U-Boot] [PATCH 0/2] tegra2: Fixes for running mainline U-Boot Thierry Reding
2011-11-17 10:04 ` [U-Boot] [PATCH 1/2] tegra2: Always build with USE_PRIVATE_LIBGCC=yes Thierry Reding
2011-11-17 23:08 ` Simon Glass
2012-01-05 15:50 ` Wolfgang Denk
2012-01-05 16:53 ` Stephen Warren
2012-01-05 17:07 ` Simon Glass
2012-01-05 17:17 ` Tom Warren
2012-01-05 19:17 ` Wolfgang Denk
2012-01-05 19:16 ` Wolfgang Denk
2012-01-05 19:40 ` Stephen Warren [this message]
2012-01-05 20:17 ` Wolfgang Denk
2012-01-05 20:42 ` Simon Glass
2012-01-05 20:53 ` Stephen Warren
2012-01-05 23:20 ` Wolfgang Denk
2011-11-17 10:04 ` [U-Boot] [PATCH 2/2] tegra2: Change CONFIG_SYS_TEXT_BASE to 0x00108000 Thierry Reding
2011-11-21 22:37 ` Simon Glass
2011-11-17 18:08 ` [U-Boot] [PATCH 0/2] tegra2: Fixes for running mainline U-Boot Stephen Warren
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