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From: Vineet Gupta <Vineet.Gupta1@synopsys.com>
To: buildroot@busybox.net
Cc: Evgeniy.Didin@synopsys.com, linux-snps-arc@lists.infradead.org,
	Vineet Gupta <Vineet.Gupta1@synopsys.com>,
	Alexey.Brodkin@synopsys.com
Subject: [PATCH 1/4] ARC: Add support for generic HS48 processor
Date: Fri, 15 Jan 2021 12:03:16 -0800	[thread overview]
Message-ID: <20210115200319.4139041-2-vgupta@synopsys.com> (raw)
In-Reply-To: <20210115200319.4139041-1-vgupta@synopsys.com>

For the HS48 processor, BR currently builds with -mcpu=hs4x_rel31 which
generates suboptimal code as it inhibits delay slot and back-back ST and so on.

Enable a new variant to build with -mcpu=hs4x for normal codegen.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---
 arch/Config.in.arc | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/arch/Config.in.arc b/arch/Config.in.arc
index fdfafda31c72..259d6f3ab8b9 100644
--- a/arch/Config.in.arc
+++ b/arch/Config.in.arc
@@ -39,9 +39,14 @@ config BR2_archs38_full
 
 config BR2_archs4x_rel31
 	bool "ARC HS48 rel 31"
+	help
+	   Build for HS48 release 3.1
+
+config BR2_archs4x
+	bool "ARC HS48"
 	help
 	   Latest release of HS48 processor
-	   - Dual- and quad multiply and MC oprations
+	   - Dual and Quad multiply and MAC operations
 	   - Double-precision FPU
 
 endchoice
@@ -49,7 +54,7 @@ endchoice
 # Choice of atomic instructions presence
 config BR2_ARC_ATOMIC_EXT
 	bool "Atomic extension (LLOCK/SCOND instructions)"
-	default y if BR2_arc770d || BR2_archs38 || BR2_archs38_64mpy || BR2_archs38_full || BR2_archs4x_rel31
+	default y if BR2_arc770d || BR2_archs38 || BR2_archs38_64mpy || BR2_archs38_full || BR2_archs4x_rel31 || BR2_archs4x
 
 config BR2_ARCH
 	default "arc"	if BR2_arcle
@@ -70,10 +75,11 @@ config BR2_GCC_TARGET_CPU
 	default "hs38"	 if BR2_archs38_64mpy
 	default "hs38_linux"	 if BR2_archs38_full
 	default "hs4x_rel31"	 if BR2_archs4x_rel31
+	default "hs4x"	 if BR2_archs4x
 
 config BR2_READELF_ARCH_NAME
 	default "ARCompact"	if BR2_arc750d || BR2_arc770d
-	default "ARCv2"		if BR2_archs38 || BR2_archs38_64mpy || BR2_archs38_full || BR2_archs4x_rel31
+	default "ARCv2"		if BR2_archs38 || BR2_archs38_64mpy || BR2_archs38_full || BR2_archs4x_rel31 || BR2_archs4x
 
 choice
 	prompt "MMU Page Size"
@@ -93,7 +99,7 @@ choice
 
 config BR2_ARC_PAGE_SIZE_4K
 	bool "4KB"
-	depends on BR2_arc770d || BR2_archs38 || BR2_archs38_64mpy || BR2_archs38_full || BR2_archs4x_rel31
+	depends on BR2_arc770d || BR2_archs38 || BR2_archs38_64mpy || BR2_archs38_full || BR2_archs4x_rel31 || BR2_archs4x
 
 config BR2_ARC_PAGE_SIZE_8K
 	bool "8KB"
@@ -103,7 +109,7 @@ config BR2_ARC_PAGE_SIZE_8K
 
 config BR2_ARC_PAGE_SIZE_16K
 	bool "16KB"
-	depends on BR2_arc770d || BR2_archs38 || BR2_archs38_64mpy || BR2_archs38_full || BR2_archs4x_rel31
+	depends on BR2_arc770d || BR2_archs38 || BR2_archs38_64mpy || BR2_archs38_full || BR2_archs4x_rel31 || BR2_archs4x
 
 endchoice
 
-- 
2.25.1


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  reply	other threads:[~2021-01-15 20:04 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-15 20:03 [PATCH 0/4] ARC updates Vineet Gupta
2021-01-15 20:03 ` Vineet Gupta [this message]
2021-01-16 15:35   ` [Buildroot] [PATCH 1/4] ARC: Add support for generic HS48 processor Yann E. MORIN
2021-01-15 20:03 ` [PATCH 2/4] configs/snps_archs38_hsdk_defconfig: refresh defconfig Vineet Gupta
2021-01-15 20:03 ` [PATCH 3/4] configs/snps_archs38_hsdk_defconfig: switch to glibc hard-float Vineet Gupta
2021-01-16 15:37   ` [Buildroot] " Yann E. MORIN
2021-01-15 20:03 ` [PATCH 4/4] configs/snps_archs38_hsdk_defconfig: update for better out-of-box experience Vineet Gupta
2021-01-16 15:40   ` [Buildroot] " Yann E. MORIN
2021-01-16 15:29 ` [Buildroot] [PATCH 0/4] ARC updates Yann E. MORIN

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