[U-Boot] [PATCH 01/30] lib: Allow crc32 to be disabled.

[Simon Glass]

Unfortunately this table seems to appear in TPL with gcc 7.3 even if it
is not used. Fix it by creating a Kconfig that can be used to disable this
routine.

It is enabled by default, since most boards use it.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 lib/Kconfig  | 29 +++++++++++++++++++++++++++++
 lib/Makefile |  2 +-
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/lib/Kconfig b/lib/Kconfig
index 135f0b372b..be5f9d343a 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -353,6 +353,35 @@ config SHA_PROG_HW_ACCEL
 config MD5
 	bool
 
+config CRC32
+	bool "Enable crc32 routine"
+	default y
+	help
+	  This enables a 32-bit CRC (cyclic-redundancy check) routine. It is
+	  typically used to check for changes in a group of bytes. Even a
+	  small change typically produces a very different CRC value. This
+	  algorithm is simple and quite fast.
+
+config SPL_CRC32
+	bool "Enable crc32 routine in SPL"
+	depends on SPL
+	default y
+	help
+	  This enables a 32-bit CRC (cyclic-redundancy check) routine in SPL. It
+	  is typically used to check for changes in a group of bytes. Even a
+	  small change typically produces a very different CRC value. This
+	  algorithm is simple and quite fast.
+
+config TPL_CRC32
+	bool "Enable crc32 routine in SPL"
+	depends on TPL
+	default y
+	help
+	  This enables a 32-bit CRC (cyclic-redundancy check) routine in SPL. It
+	  is typically used to check for changes in a group of bytes. Even a
+	  small change typically produces a very different CRC value. This
+	  algorithm is simple and quite fast.
+
 config CRC32C
 	bool
 
diff --git a/lib/Makefile b/lib/Makefile
index d248d8626c..8adc08fd73 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -84,7 +84,7 @@ obj-y += errno.o
 obj-y += display_options.o
 CFLAGS_display_options.o := $(if $(BUILD_TAG),-DBUILD_TAG='"$(BUILD_TAG)"')
 obj-$(CONFIG_BCH) += bch.o
-obj-y += crc32.o
+obj-$(CONFIG_$(SPL_TPL_)CRC32) += crc32.o
 obj-$(CONFIG_CRC32C) += crc32c.o
 obj-y += ctype.o
 obj-y += div64.o
-- 
2.24.0.rc0.303.g954a862665-goog