[U-Boot] [PATCH v5 02/11] arm: add option for TPL support in arm 32bit

[Kever Yang]

Some options like TPL_SYS_THUMB_BUILD, TPL_USE_ARCH_MEMCPY
and TPL_USE_ARCH_MEMCPY are needed for TPL build in 32bit arm.

Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
---

 arch/arm/Kconfig | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a5851aeeae..18e8d9355c 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -338,6 +338,17 @@ config SPL_SYS_THUMB_BUILD
 	   density. For ARM architectures that support Thumb2 this flag will
 	   result in Thumb2 code generated by GCC.
 
+config TPL_SYS_THUMB_BUILD
+	bool "Build TPL using the Thumb instruction set"
+	default y if SYS_THUMB_BUILD
+	depends on TPL && !ARM64
+	help
+	   Use this flag to build SPL using the Thumb instruction set for
+	   ARM architectures. Thumb instruction set provides better code
+	   density. For ARM architectures that support Thumb2 this flag will
+	   result in Thumb2 code generated by GCC.
+
+
 config SYS_L2CACHE_OFF
 	bool "L2cache off"
 	help
@@ -373,6 +384,15 @@ config SPL_USE_ARCH_MEMCPY
 	  Such implementation may be faster under some conditions
 	  but may increase the binary size.
 
+config TPL_USE_ARCH_MEMCPY
+	bool "Use an assembly optimized implementation of memcpy for TPL"
+	default y if USE_ARCH_MEMCPY
+	depends on !ARM64
+	help
+	  Enable the generation of an optimized version of memcpy.
+	  Such implementation may be faster under some conditions
+	  but may increase the binary size.
+
 config USE_ARCH_MEMSET
 	bool "Use an assembly optimized implementation of memset"
 	default y
@@ -391,6 +411,15 @@ config SPL_USE_ARCH_MEMSET
 	  Such implementation may be faster under some conditions
 	  but may increase the binary size.
 
+config TPL_USE_ARCH_MEMSET
+	bool "Use an assembly optimized implementation of memset for TPL"
+	default y if USE_ARCH_MEMSET
+	depends on !ARM64
+	help
+	  Enable the generation of an optimized version of memset.
+	  Such implementation may be faster under some conditions
+	  but may increase the binary size.
+
 config ARM64_SUPPORT_AARCH32
 	bool "ARM64 system support AArch32 execution state"
 	default y if ARM64 && !TARGET_THUNDERX_88XX
-- 
2.20.1