OpenWrt – Rev 1
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From 67b7bff0fd364c194e653f69baa623ba2141bd4c Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Mon, 4 Aug 2014 18:46:02 +0200
Subject: [PATCH 07/53] MIPS: ralink: copy the commandline from the devicetree
Signed-off-by: John Crispin <blogic@openwrt.org>
---
arch/mips/ralink/of.c | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/mips/ralink/of.c
+++ b/arch/mips/ralink/of.c
@@ -3,7 +3,7 @@
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
- * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2008-2014 Imre Kaloz <kaloz@openwrt.org>
* Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2013 John Crispin <john@phrozen.org>
*/
@@ -66,6 +66,19 @@ static int __init early_init_dt_find_mem
return 0;
}
+static int chosen_dtb;
+
+static int __init early_init_dt_find_chosen(unsigned long node, const char *uname,
+ int depth, void *data)
+{
+ if (depth == 1 && !strcmp(uname, "chosen"))
+ chosen_dtb = 1;
+
+ return 0;
+}
+
+extern struct boot_param_header __image_dtb;
+
void __init plat_mem_setup(void)
{
void *dtb = NULL;
@@ -82,7 +95,11 @@ void __init plat_mem_setup(void)
else if (__dtb_start != __dtb_end)
dtb = (void *)__dtb_start;
- __dt_setup_arch(dtb);
+ __dt_setup_arch(&__image_dtb);
+
+ of_scan_flat_dt(early_init_dt_find_chosen, NULL);
+ if (chosen_dtb)
+ strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE);
strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE);
--- a/arch/mips/kernel/head.S
+++ b/arch/mips/kernel/head.S
@@ -85,6 +85,9 @@ EXPORT(__image_cmdline)
.fill 0x400
#endif /* CONFIG_IMAGE_CMDLINE_HACK */
+ .ascii "OWRTDTB:"
+ EXPORT(__image_dtb)
+ .fill 0x4000
__REF
NESTED(kernel_entry, 16, sp) # kernel entry point