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67 lines
1.9 KiB
Diff
67 lines
1.9 KiB
Diff
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From 67b7bff0fd364c194e653f69baa623ba2141bd4c Mon Sep 17 00:00:00 2001
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From: John Crispin <blogic@openwrt.org>
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Date: Mon, 4 Aug 2014 18:46:02 +0200
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Subject: [PATCH 07/53] MIPS: ralink: copy the commandline from the devicetree
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Signed-off-by: John Crispin <blogic@openwrt.org>
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---
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arch/mips/ralink/of.c | 2 ++
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1 file changed, 2 insertions(+)
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--- a/arch/mips/ralink/of.c
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+++ b/arch/mips/ralink/of.c
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@@ -3,7 +3,7 @@
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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- * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
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+ * Copyright (C) 2008-2014 Imre Kaloz <kaloz@openwrt.org>
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* Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
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* Copyright (C) 2013 John Crispin <john@phrozen.org>
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*/
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@@ -66,6 +66,19 @@ static int __init early_init_dt_find_mem
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return 0;
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}
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+static int chosen_dtb;
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+
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+static int __init early_init_dt_find_chosen(unsigned long node, const char *uname,
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+ int depth, void *data)
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+{
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+ if (depth == 1 && !strcmp(uname, "chosen"))
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+ chosen_dtb = 1;
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+
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+ return 0;
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+}
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+
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+extern struct boot_param_header __image_dtb;
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+
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void __init plat_mem_setup(void)
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{
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set_io_port_base(KSEG1);
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@@ -74,7 +87,11 @@ void __init plat_mem_setup(void)
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* Load the builtin devicetree. This causes the chosen node to be
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* parsed resulting in our memory appearing
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*/
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- __dt_setup_arch(__dtb_start);
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+ __dt_setup_arch(&__image_dtb);
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+
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+ of_scan_flat_dt(early_init_dt_find_chosen, NULL);
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+ if (chosen_dtb)
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+ strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE);
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of_scan_flat_dt(early_init_dt_find_memory, NULL);
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if (memory_dtb)
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--- a/arch/mips/kernel/head.S
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+++ b/arch/mips/kernel/head.S
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@@ -85,6 +85,9 @@ EXPORT(__image_cmdline)
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.fill 0x400
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#endif /* CONFIG_IMAGE_CMDLINE_HACK */
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+ .ascii "OWRTDTB:"
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+ EXPORT(__image_dtb)
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+ .fill 0x4000
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__REF
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NESTED(kernel_entry, 16, sp) # kernel entry point
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