From: Alexandre Torgue <alexandre.torgue@st.com>
To: robh+dt@kernel.org, Frank Rowand <frowand.list@gmail.com>,
Masahiro Yamada <masahiroy@kernel.org>,
Michal Marek <michal.lkml@markovi.net>,
david@gibson.dropbear.id.au, sjg@chromium.org
Cc: devicetree@vger.kernel.org,
Alexandre Torgue <alexandre.torgue@st.com>,
linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org,
devicetree-compiler@vger.kernel.org
Subject: [RFC PATCH 2/3] of: fdt: print dtb build information
Date: Mon, 13 Jan 2020 19:16:24 +0100 [thread overview]
Message-ID: <20200113181625.3130-3-alexandre.torgue@st.com> (raw)
In-Reply-To: <20200113181625.3130-1-alexandre.torgue@st.com>
This commit prints out DTB build information (build time, dts source
version used, ...) if "Build-info" property exists in DTB root node.
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 2cdf64d2456f..df5f54f9582a 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -1224,9 +1224,18 @@ bool __init early_init_dt_scan(void *params)
*/
void __init unflatten_device_tree(void)
{
+ const char *build_info;
+ unsigned long dt_root;
+
__unflatten_device_tree(initial_boot_params, NULL, &of_root,
early_init_dt_alloc_memory_arch, false);
+ /* If available, provide dtb build information */
+ dt_root = of_get_flat_dt_root();
+ build_info = of_get_flat_dt_prop(dt_root, "Build-info", NULL);
+ if (build_info)
+ pr_info("%s\n", build_info);
+
/* Get pointer to "/chosen" and "/aliases" nodes for use everywhere */
of_alias_scan(early_init_dt_alloc_memory_arch);
--
2.17.1
next prev parent reply other threads:[~2020-01-13 18:16 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-13 18:16 [RFC PATCH 0/3] Add device tree build information Alexandre Torgue
2020-01-13 18:16 ` [RFC PATCH 1/3] dtc: Add dtb build information option Alexandre Torgue
2020-01-16 0:57 ` David Gibson
2020-01-16 8:58 ` Alexandre Torgue
2020-01-17 9:09 ` David Gibson
2020-01-17 14:43 ` Rob Herring
2020-01-17 15:11 ` Alexandre Torgue
2020-01-19 6:40 ` David Gibson
2020-01-19 6:39 ` David Gibson
2020-01-21 15:59 ` Rob Herring
2020-01-21 17:18 ` Steve McIntyre
2020-01-23 5:13 ` David Gibson
2020-01-23 14:05 ` Rob Herring
2020-01-20 18:17 ` Steve McIntyre
2020-01-22 18:00 ` Alexandre Torgue
2020-01-22 19:54 ` Frank Rowand
2020-01-13 18:16 ` Alexandre Torgue [this message]
2020-01-13 18:16 ` [RFC PATCH 3/3] scripts: Use -B dtc option to generate dtb build information Alexandre Torgue
2020-01-17 19:20 ` Frank Rowand
2020-01-22 19:54 ` Frank Rowand
2020-01-20 16:16 ` Frank Rowand
2020-01-15 15:56 ` [RFC PATCH 0/3] Add device tree " Steve McIntyre
2020-01-16 2:28 ` Frank Rowand
2020-01-16 8:19 ` Alexandre Torgue
2020-01-17 19:13 ` Frank Rowand
2020-01-20 10:56 ` Alexandre Torgue
2020-01-20 16:14 ` Frank Rowand
2020-01-20 18:28 ` Steve McIntyre
2020-01-21 3:20 ` Frank Rowand
2020-01-21 3:39 ` Frank Rowand
2020-01-21 17:10 ` Steve McIntyre
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