From: Antony Pavlov <antonynpavlov@gmail.com>
To: barebox@lists.infradead.org
Subject: [PATCH v2] startup: introduce global.endianness variable
Date: Tue, 11 May 2021 11:36:48 +0300 [thread overview]
Message-ID: <20210511083648.134890-1-antonynpavlov@gmail.com> (raw)
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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next reply other threads:[~2021-05-11 12:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-11 8:36 Antony Pavlov [this message]
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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