From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: barebox@lists.infradead.org
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Subject: [PATCH 2/2] arm/cpu/start.c: Avoid copying device-tree when possible
Date: Fri, 25 Sep 2015 23:02:18 -0700 [thread overview]
Message-ID: <1443247338-29171-2-git-send-email-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <1443247338-29171-1-git-send-email-andrew.smirnov@gmail.com>
In case of non-relocatable image device-tree blob should already be
preloaded into memory as a part of Barebox binary upload, so there is
no need to 'memcpy' it again
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
arch/arm/cpu/start.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/arm/cpu/start.c b/arch/arm/cpu/start.c
index 7ffde7c..c461a73 100644
--- a/arch/arm/cpu/start.c
+++ b/arch/arm/cpu/start.c
@@ -107,6 +107,15 @@ static noinline __noreturn void __start(unsigned long membase,
switch (get_any_boarddata_magic(boarddata)) {
case FDT_MAGIC:
+ if (!IS_ENABLED(CONFIG_RELOCATABLE)) {
+ /*
+ If Barebox is not relocatable
+ there's no need to move data around
+ */
+ barebox_boot_dtb = boarddata;
+ break;
+ }
+
totalsize = get_unaligned_be32(boarddata + 4);
var = &barebox_boot_dtb;
name = "DTB";
--
2.1.4
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next prev parent reply other threads:[~2015-09-26 6:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-26 6:02 [PATCH 1/2] arm/cpu/start.c: Distil some common code in __start() Andrey Smirnov
2015-09-26 6:02 ` Andrey Smirnov [this message]
2015-09-29 6:58 ` [PATCH 2/2] arm/cpu/start.c: Avoid copying device-tree when possible Sascha Hauer
2015-09-29 17:52 ` Andrey Smirnov
2015-09-30 7:00 ` Sascha Hauer
2015-09-30 17:56 ` Andrey Smirnov
2015-10-01 6:22 ` Sascha Hauer
2015-10-06 17:35 ` Andrey Smirnov
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