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* [PATCH v2] startup: introduce global.endianness variable
@ 2021-05-11  8:36 Antony Pavlov
  2021-05-12  5:36 ` Sascha Hauer
  0 siblings, 1 reply; 5+ messages in thread
From: Antony Pavlov @ 2021-05-11  8:36 UTC (permalink / raw)
  To: barebox

The global.endianness variable makes it possible
to determine current endian mode from command
line or from script on bi-endian capable system.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
---
 common/globalvar.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/common/globalvar.c b/common/globalvar.c
index a55b38b00f..8bb5015ce4 100644
--- a/common/globalvar.c
+++ b/common/globalvar.c
@@ -641,6 +641,8 @@ int globalvar_add_simple_ip(const char *name, IPaddr_t *ip)
 
 static int globalvar_init(void)
 {
+	const char *endianness;
+
 	register_device(&global_device);
 
 	if (IS_ENABLED(CONFIG_NVVAR))
@@ -651,6 +653,16 @@ static int globalvar_init(void)
 	if (strlen(buildsystem_version_string) > 0)
 		globalvar_add_simple("buildsystem.version", buildsystem_version_string);
 
+#ifdef __BIG_ENDIAN
+	endianness = "big";
+#elif defined(__LITTLE_ENDIAN)
+	endianness = "little";
+#else
+#error "could not determine byte order"
+#endif
+
+	globalvar_add_simple("endianness", endianness);
+
 	return 0;
 }
 pure_initcall(globalvar_init);
@@ -658,6 +670,7 @@ pure_initcall(globalvar_init);
 BAREBOX_MAGICVAR(global.version, "The barebox version");
 BAREBOX_MAGICVAR(global.buildsystem.version,
 		 "version of buildsystem barebox was built with");
+BAREBOX_MAGICVAR(global.endianness, "The barebox endianness");
 
 /**
  * nvvar_save - save NV variables to persistent environment
-- 
2.31.1


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^ permalink raw reply	[flat|nested] 5+ messages in thread
* [PATCH V2] startup: introduce global.endianness variable
@ 2020-04-06 12:13 Antony Pavlov
  2020-04-06 12:44 ` Antony Pavlov
  0 siblings, 1 reply; 5+ messages in thread
From: Antony Pavlov @ 2020-04-06 12:13 UTC (permalink / raw)
  To: barebox

The global.endianness variable make it possible
to determine current endian mode from command
line or from script on bi-endian capable system.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
---
 common/globalvar.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/common/globalvar.c b/common/globalvar.c
index c87f2c9339..264833f88c 100644
--- a/common/globalvar.c
+++ b/common/globalvar.c
@@ -591,6 +591,8 @@ int globalvar_add_simple_ip(const char *name, IPaddr_t *ip)
 
 static int globalvar_init(void)
 {
+	const char *endianness;
+
 	register_device(&global_device);
 
 	if (IS_ENABLED(CONFIG_NVVAR))
@@ -598,11 +600,19 @@ static int globalvar_init(void)
 
 	globalvar_add_simple("version", UTS_RELEASE);
 
+	if (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
+		endianness = "big";
+	else
+		endianness = "little";
+
+	globalvar_add_simple("endianness", endianness);
+
 	return 0;
 }
 pure_initcall(globalvar_init);
 
 BAREBOX_MAGICVAR_NAMED(global_version, global.version, "The barebox version");
+BAREBOX_MAGICVAR_NAMED(global_endianness, global.endianness, "The barebox endianness");
 
 /**
  * nvvar_save - save NV variables to persistent environment
-- 
2.25.0


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^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2021-05-12  5:37 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2021-05-11  8:36 [PATCH v2] startup: introduce global.endianness variable Antony Pavlov
2021-05-12  5:36 ` Sascha Hauer
  -- strict thread matches above, loose matches on Subject: below --
2020-04-06 12:13 [PATCH V2] " Antony Pavlov
2020-04-06 12:44 ` Antony Pavlov
2020-04-14  9:36   ` Sascha Hauer

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