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From: Antony Pavlov <antonynpavlov@gmail.com>
To: barebox@lists.infradead.org
Subject: [PATCH] imd: add optional endianness= parameter for bi-endian systems
Date: Thu, 10 Feb 2022 16:46:39 +0300	[thread overview]
Message-ID: <20220210134639.341801-1-antonynpavlov@gmail.com> (raw)

MIPS architecture supports both little- and big-endian modes.
It's handy to have means to determine endianness of barebox
image. This patch adds necessary record into imd block.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
---
 common/Kconfig       |  6 ++++++
 common/imd-barebox.c | 10 ++++++++++
 2 files changed, 16 insertions(+)

diff --git a/common/Kconfig b/common/Kconfig
index 667b0a1e79..f8d99bd48c 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -730,6 +730,12 @@ config IMD
 	select CRC32
 	bool "barebox metadata support"
 
+config IMD_ENDIANNESS
+	bool "add endianness record to metadata"
+	depends on IMD
+	depends on SYS_SUPPORTS_LITTLE_ENDIAN && SYS_SUPPORTS_BIG_ENDIAN
+	default y
+
 choice
 	prompt "console support"
 	default CONSOLE_FULL
diff --git a/common/imd-barebox.c b/common/imd-barebox.c
index e11fdca845..7877c8de39 100644
--- a/common/imd-barebox.c
+++ b/common/imd-barebox.c
@@ -23,6 +23,16 @@ __BAREBOX_IMD_SECTION(.barebox_imd_end) = {
 	.type = cpu_to_le32(IMD_TYPE_END),
 };
 
+#ifdef CONFIG_IMD_ENDIANNESS
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+#define IMD_ENDIANNESS "little"
+#else
+#define IMD_ENDIANNESS "big"
+#endif
+BAREBOX_IMD_TAG_STRING(imd_endianness_tag, IMD_TYPE_PARAMETER,
+			"endianness=" IMD_ENDIANNESS, 1);
+#endif /* CONFIG_IMD_ENDIANNESS */
+
 BAREBOX_IMD_TAG_STRING(imd_build_tag, IMD_TYPE_BUILD, UTS_VERSION, 1);
 BAREBOX_IMD_TAG_STRING(imd_release_tag, IMD_TYPE_RELEASE, UTS_RELEASE, 1);
 BAREBOX_IMD_TAG_STRING(imd_buildsystem_version_tag, IMD_TYPE_BUILDSYSTEM, BUILDSYSTEM_VERSION, 1);
-- 
2.33.0


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             reply	other threads:[~2022-02-10 13:48 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-10 13:46 Antony Pavlov [this message]
2022-02-11 10:35 ` Sascha Hauer

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