From: Tom Rini <trini@konsulko.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 1/4] ARM: Add ARMv7-M support
Date: Thu, 5 Mar 2015 10:32:36 -0500 [thread overview]
Message-ID: <20150305153236.GS25373@bill-the-cat> (raw)
In-Reply-To: <1425210282-7887-2-git-send-email-rev13@wp.pl>
On Sun, Mar 01, 2015 at 12:44:39PM +0100, Kamil Lulko wrote:
> Signed-off-by: Kamil Lulko <rev13@wp.pl>
[snip]
> diff --git a/arch/arm/lib/crt0.S b/arch/arm/lib/crt0.S
[snip]
> @@ -66,15 +69,30 @@ ENTRY(_main)
> #else
> ldr sp, =(CONFIG_SYS_INIT_SP_ADDR)
> #endif
> +#if defined(CONFIG_CPU_V7M) /* v7M forbids using SP as BIC destination */
> + mov r3, sp
> + bic r3, r3, #7
> + mov sp, r3
> +#else
> bic sp, sp, #7 /* 8-byte alignment for ABI compliance */
> +#endif
There's 4 places where this change comes in. Albert, what do you think
about always just doing this in 3 instructions with a comment in the
first instance about v7-M support?
--
Tom
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next prev parent reply other threads:[~2015-03-05 15:32 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-01 11:44 [U-Boot] [PATCH 0/4] Add support for stm32f429-discovery board Kamil Lulko
2015-03-01 11:44 ` [U-Boot] [PATCH 1/4] ARM: Add ARMv7-M support Kamil Lulko
2015-03-05 15:32 ` Tom Rini [this message]
2015-03-30 22:06 ` Andreas Färber
2015-04-01 0:55 ` Tom Rini
2015-04-23 13:14 ` [U-Boot] [U-Boot,1/4] " Tom Rini
2015-03-01 11:44 ` [U-Boot] [PATCH 2/4] ARMv7M: Add STM32F4 support Kamil Lulko
2015-03-05 15:34 ` Tom Rini
2015-04-23 13:14 ` [U-Boot] [U-Boot,2/4] " Tom Rini
2015-03-01 11:44 ` [U-Boot] [PATCH 3/4] stm32f4: Add serial driver Kamil Lulko
2015-03-05 15:34 ` Tom Rini
2015-04-23 13:14 ` [U-Boot] [U-Boot,3/4] " Tom Rini
2015-03-01 11:44 ` [U-Boot] [PATCH 4/4] stm32f4: Add support for stm32f429-discovery board Kamil Lulko
2015-03-05 15:35 ` Tom Rini
2015-04-23 13:14 ` [U-Boot] [U-Boot, " Tom Rini
2015-03-25 4:07 ` [U-Boot] [PATCH 0/4] " Chanwoo Choi
2015-03-25 16:58 ` Tom Rini
2015-03-26 13:47 ` Kamil Lulko
2015-03-26 14:07 ` Tom Rini
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