From: Aneesh V <aneesh@ti.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 3/4] armv7: Use -march=armv7-a and thereby enable Thumb-2
Date: Wed, 15 Feb 2012 19:27:32 +0530 [thread overview]
Message-ID: <1329314253-4596-4-git-send-email-aneesh@ti.com> (raw)
In-Reply-To: <1328528248-20872-1-git-send-email-aneesh@ti.com>
Enable -march=armv7-a for armv7 platforms if the tool-chain
supports it. This in turn results in Thumb-2 code generated
for these platforms if CONFIG_SYS_THUMB_BUILD is enabled.
Signed-off-by: Aneesh V <aneesh@ti.com>
---
I believe armv7-a is fine for all the SoCs except Tegra2
and I see that Tegra2 is already making the necessary
exception in .../armv7/tegra2/config.mk
Let me know if any other SoC has a problem with armv7-a
Changes from RFC to V1:
- Enabled armv7-a from armv7/config.mk instead of from
omap config.mk files
---
arch/arm/cpu/armv7/config.mk | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/arm/cpu/armv7/config.mk b/arch/arm/cpu/armv7/config.mk
index 83ddf10..b66fb6f 100644
--- a/arch/arm/cpu/armv7/config.mk
+++ b/arch/arm/cpu/armv7/config.mk
@@ -22,8 +22,9 @@
#
PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float
-# Make ARMv5 to allow more compilers to work, even though its v7a.
-PLATFORM_CPPFLAGS += -march=armv5
+# If armv7-a is not supported by GCC fall-back to armv5, which is
+# supported by more tool-chains
+PLATFORM_CPPFLAGS += $(call cc-option, -march=armv7-a, -march=armv5)
# =========================================================================
#
# Supply options according to compiler version
--
1.7.1
next prev parent reply other threads:[~2012-02-15 13:57 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-06 11:37 [U-Boot] [RFC PATCH 0/4] Enable Thumb build for ARM platforms Aneesh V
2012-02-06 11:37 ` [U-Boot] [RFC PATCH 1/4] ARM: enable Thumb build Aneesh V
2012-02-06 18:45 ` Tom Rini
2012-02-07 7:43 ` Aneesh V
2012-02-06 11:37 ` [U-Boot] [RFC PATCH 2/4] OMAP3+: fix issues with " Aneesh V
2012-02-06 21:06 ` Albert ARIBAUD
2012-02-07 7:49 ` Aneesh V
2012-02-09 8:58 ` Aneesh V
2012-02-06 11:37 ` [U-Boot] [RFC PATCH 3/4] OMAP3+: Use -march=armv7-a and thereby enable Thumb-2 Aneesh V
2012-02-06 11:37 ` [U-Boot] [RFC PATCH 4/4] OMAP4: enable Thumb build Aneesh V
2012-02-06 12:26 ` [U-Boot] [RFC PATCH 0/4] Enable Thumb build for ARM platforms Aneesh V
2012-02-06 13:22 ` Aneesh V
2012-02-15 13:57 ` [U-Boot] [PATCH " Aneesh V
2012-02-15 13:57 ` [U-Boot] [PATCH 1/4] ARM: enable Thumb build Aneesh V
2012-02-15 13:57 ` [U-Boot] [PATCH 2/4] arm: add %function attribute to assembly functions Aneesh V
2012-02-17 11:09 ` Aneesh V
2012-02-18 10:13 ` Albert ARIBAUD
2012-02-18 13:24 ` Aneesh V
2012-02-18 15:04 ` Albert ARIBAUD
2012-02-18 16:34 ` Aneesh V
2012-02-18 16:48 ` Albert ARIBAUD
2012-02-20 16:08 ` Aneesh V
2012-02-23 11:06 ` Aneesh V
2012-02-17 17:13 ` Mike Frysinger
2012-02-18 11:12 ` Aneesh V
2012-02-18 11:34 ` Albert ARIBAUD
2012-02-18 22:03 ` Simon Glass
2012-02-19 7:15 ` Mike Frysinger
2012-02-20 20:07 ` Tom Rini
2012-02-20 21:53 ` Simon Glass
2012-02-21 4:19 ` Mike Frysinger
2012-02-21 4:44 ` Simon Glass
2012-02-21 14:33 ` Tom Rini
2012-02-21 15:42 ` Mike Frysinger
2012-02-21 18:03 ` Aneesh V
2012-02-21 19:28 ` Mike Frysinger
2012-02-21 20:01 ` Aneesh V
2012-02-21 4:18 ` Mike Frysinger
2012-02-15 13:57 ` Aneesh V [this message]
2012-02-15 13:57 ` [U-Boot] [PATCH 4/4] OMAP4: enable Thumb build Aneesh V
2012-02-23 13:39 ` [U-Boot] [PATCH v2 1/5] arm: adapt asm/linkage.h from Linux Aneesh V
2012-02-23 14:01 ` Aneesh V
2012-02-23 13:39 ` [U-Boot] [PATCH v2 2/5] armv7: add appropriate headers for assembly functions Aneesh V
2012-02-23 13:39 ` [U-Boot] [PATCH v2 3/5] ARM: enable Thumb build Aneesh V
2012-02-23 14:57 ` Mike Frysinger
2012-02-23 17:28 ` Aneesh V
2012-02-23 17:34 ` Tom Rini
2012-02-23 17:49 ` Aneesh V
2012-02-23 17:51 ` Tom Rini
2012-02-23 18:09 ` Aneesh V
2012-02-23 18:13 ` Aneesh V
2012-02-23 18:05 ` Mike Frysinger
2012-02-23 18:04 ` Mike Frysinger
2012-02-23 18:12 ` Aneesh V
2012-02-23 13:39 ` [U-Boot] [PATCH v2 4/5] armv7: Use -march=armv7-a and thereby enable Thumb-2 Aneesh V
2012-02-23 13:39 ` [U-Boot] [PATCH v2 5/5] OMAP4: enable Thumb build Aneesh V
2012-02-23 14:06 ` [U-Boot] [PATCH v3 1/6] arm: adapt asm/linkage.h from Linux Aneesh V
2012-02-23 14:59 ` Mike Frysinger
2012-02-23 15:24 ` Tom Rini
2012-02-23 16:57 ` Mike Frysinger
2012-02-23 17:40 ` Aneesh V
2012-02-23 23:52 ` Mike Frysinger
2012-02-24 10:30 ` Aneesh V
2012-02-23 14:06 ` [U-Boot] [PATCH v3 2/6] armv7: add appropriate headers for assembly functions Aneesh V
2012-02-23 14:59 ` Mike Frysinger
2012-02-23 14:06 ` [U-Boot] [PATCH v3 3/6] ARM: enable Thumb build Aneesh V
2012-02-23 14:06 ` [U-Boot] [PATCH v3 4/6] armv7: Use -march=armv7-a and thereby enable Thumb-2 Aneesh V
2012-02-23 15:05 ` Mike Frysinger
2012-02-23 17:50 ` Aneesh V
2012-02-23 14:06 ` [U-Boot] [PATCH v3 5/6] omap4+: Avoid using __attribute__ ((__packed__)) Aneesh V
2012-02-23 14:21 ` Tom Rini
2012-02-23 14:56 ` Aneesh V
2012-02-23 15:03 ` Mike Frysinger
2012-02-23 15:03 ` Mike Frysinger
2012-02-23 15:42 ` Aneesh V
2012-02-23 14:06 ` [U-Boot] [PATCH v3 6/6] OMAP4: enable Thumb build Aneesh V
2012-03-08 17:10 ` [U-Boot] [PATCH 1/6] arm: adapt asm/linkage.h from Linux Aneesh V
2012-03-08 17:14 ` Aneesh V
2012-03-08 17:10 ` [U-Boot] [PATCH 2/6] armv7: add appropriate headers for assembly functions Aneesh V
2012-03-08 17:10 ` [U-Boot] [PATCH 3/6] ARM: enable Thumb build Aneesh V
2012-03-08 17:10 ` [U-Boot] [PATCH 4/6] armv7: Use -march=armv7-a and thereby enable Thumb-2 Aneesh V
2012-03-08 17:10 ` [U-Boot] [PATCH 5/6] omap4+: Avoid using __attribute__ ((__packed__)) Aneesh V
2012-03-08 17:10 ` [U-Boot] [PATCH 6/6] OMAP4: enable Thumb build Aneesh V
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