From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Kettenis <mark.kettenis@xs4all.nl>
Date: Sun, 26 Apr 2020 23:23:31 +0200 (CEST)
Subject: [PATCH v2 6/7] x86: Add an indication of 32/64-bit to bdinfo
In-Reply-To: <73930b03-0fd5-2e74-a5db-3ac15a149dfc@gmx.de> (message from
 Heinrich Schuchardt on Sun, 26 Apr 2020 23:14:25 +0200)
References: <20200426193824.171193-1-sjg@chromium.org>
 <20200426193824.171193-2-sjg@chromium.org>
 <77ab3c57-a320-b775-59f5-bd852bd7b782@gmx.de>
 <CAPnjgZ3wHtS4D3mHr-+14uoe0xODvK+mCg-P_8k5r9Z8NuKPbw@mail.gmail.com>
 <73930b03-0fd5-2e74-a5db-3ac15a149dfc@gmx.de>
Message-ID: <0161994d7bb009a5@bloch.sibelius.xs4all.nl>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

> From: Heinrich Schuchardt <xypron.glpk@gmx.de>
> Date: Sun, 26 Apr 2020 23:14:25 +0200
> 
> On 4/26/20 10:32 PM, Simon Glass wrote:
> > Hi Heinrich,
> >
> > On Sun, 26 Apr 2020 at 14:21, Heinrich Schuchardt <xypron.glpk@gmx.de> wrote:
> >>
> >> On 4/26/20 9:38 PM, Simon Glass wrote:
> >>> It is useful to know what mode U-Boot is running in. Add a message at the
> >>> end of the 'bdinfo' output.
> >>
> >> X86 is not the only architecture that can run both in 32bit and 64bit
> >> mode. The same is true for ARM and SANDBOX. Shouldn't we provide the
> >> information for these architecture too?
> >>
> >> The Raspberry Pi 3 is an example of an ARM board where building either
> >> 32bit or 64bit U-Boot is used depending on the bitness of the OS.
> >
> > Yes I think that would be good. But do we have a generic way to tell?
> > sizeof(int) ?
> 
> sizeof(int) = 4 on aarch64.

sizeof(void *) should work

(and sizeof(long) should work as well, but then there is Windows)

> Using these should be fine:
> 
> CONFIG_ARM64=y
> CONFIG_ARCH_RV64I=y
> CONFIG_SANDBOX64=y

MIPS and PowerPC can be 64-bit as well.  I don't think checking config
options scales.