* [U-Boot] [PATCH] arm: armv7-a: Enable mtune when CONFIG_CPU_V7A
@ 2018-08-03 10:23 Adam Ford
2018-08-03 13:56 ` Tom Rini
0 siblings, 1 reply; 2+ messages in thread
From: Adam Ford @ 2018-08-03 10:23 UTC (permalink / raw)
To: u-boot
arch/arm/Makefile has a list of options for mtune, but the
entry for CONFIG_CPU_V7A is empty. By tuning for generic-armv7-a
both the size of SPL and u-boot shrink a little. For those
with limited resources in SPL, every little bit helps.
The following size changed apply to omap3_logic
Original:
text data bss dec hex filename
541198 22692 327040 890930 d9832 u-boot
text data bss dec hex filename
50964 429 67580 118973 1d0bd spl/u-boot-spl
With -mtune=generic-armv7-a
text data bss dec hex filename
540934 22692 327056 890682 d973a u-boot
text data bss dec hex filename
50972 429 67580 118981 1d0c5 spl/u-boot-spl
Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index cac58bdc4d..b9f0903f9b 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -40,7 +40,7 @@ tune-$(CONFIG_CPU_SA1100) =-mtune=strongarm1100
tune-$(CONFIG_CPU_PXA) =-mcpu=xscale
tune-$(CONFIG_CPU_ARM1136) =
tune-$(CONFIG_CPU_ARM1176) =
-tune-$(CONFIG_CPU_V7A) =
+tune-$(CONFIG_CPU_V7A) =-mtune=generic-armv7-a
tune-$(CONFIG_CPU_V7R) =
tune-$(CONFIG_ARM64) =
--
2.17.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [U-Boot] [PATCH] arm: armv7-a: Enable mtune when CONFIG_CPU_V7A
2018-08-03 10:23 [U-Boot] [PATCH] arm: armv7-a: Enable mtune when CONFIG_CPU_V7A Adam Ford
@ 2018-08-03 13:56 ` Tom Rini
0 siblings, 0 replies; 2+ messages in thread
From: Tom Rini @ 2018-08-03 13:56 UTC (permalink / raw)
To: u-boot
On Fri, Aug 03, 2018 at 05:23:21AM -0500, Adam Ford wrote:
> arch/arm/Makefile has a list of options for mtune, but the
> entry for CONFIG_CPU_V7A is empty. By tuning for generic-armv7-a
> both the size of SPL and u-boot shrink a little. For those
> with limited resources in SPL, every little bit helps.
>
> The following size changed apply to omap3_logic
>
> Original:
> text data bss dec hex filename
> 541198 22692 327040 890930 d9832 u-boot
>
> text data bss dec hex filename
> 50964 429 67580 118973 1d0bd spl/u-boot-spl
>
> With -mtune=generic-armv7-a
> text data bss dec hex filename
> 540934 22692 327056 890682 d973a u-boot
>
> text data bss dec hex filename
> 50972 429 67580 118981 1d0c5 spl/u-boot-spl
>
> Signed-off-by: Adam Ford <aford173@gmail.com>
>
> diff --git a/arch/arm/Makefile b/arch/arm/Makefile
> index cac58bdc4d..b9f0903f9b 100644
> --- a/arch/arm/Makefile
> +++ b/arch/arm/Makefile
> @@ -40,7 +40,7 @@ tune-$(CONFIG_CPU_SA1100) =-mtune=strongarm1100
> tune-$(CONFIG_CPU_PXA) =-mcpu=xscale
> tune-$(CONFIG_CPU_ARM1136) =
> tune-$(CONFIG_CPU_ARM1176) =
> -tune-$(CONFIG_CPU_V7A) =
> +tune-$(CONFIG_CPU_V7A) =-mtune=generic-armv7-a
> tune-$(CONFIG_CPU_V7R) =
> tune-$(CONFIG_ARM64) =
I think we might need to use cc-option here. We have that around the
arch portion due to llvm using 'armv7' not 'armv7-a'.
--
Tom
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