2022-09-20 10:01:48 +00:00
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From a9968d9cb8cb10030491fa05e24b00bd42f6d3a9 Mon Sep 17 00:00:00 2001
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From: John Crispin <john@openwrt.org>
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Date: Thu, 30 May 2013 16:00:42 +0000
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Subject: fdt: enable retrieving kernel args from bootloader
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This patch is a device tree enhancement that IMHO is worthy of mainline.
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It allows the bootloader's commandline to be preserved even when the
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device tree specifies one.
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Submitted-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
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SVN-Revision: 36780
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---
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drivers/of/fdt.c | 3 +++
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1 file changed, 3 insertions(+)
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2021-09-13 12:08:35 +00:00
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--- a/drivers/of/fdt.c
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+++ b/drivers/of/fdt.c
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2021-09-12 20:36:12 +00:00
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@@ -1055,6 +1055,9 @@ int __init early_init_dt_scan_chosen(uns
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2021-09-13 12:08:35 +00:00
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p = of_get_flat_dt_prop(node, "bootargs", &l);
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if (p != NULL && l > 0)
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strlcpy(data, p, min(l, COMMAND_LINE_SIZE));
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+ p = of_get_flat_dt_prop(node, "bootargs-append", &l);
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+ if (p != NULL && l > 0)
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+ strlcat(data, p, min_t(int, strlen(data) + (int)l, COMMAND_LINE_SIZE));
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/*
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* CONFIG_CMDLINE is meant to be a default in case nothing else
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