On arm CONFIG_CMDLINE_EXTEND does not append build-in
cmdline in kernel to U-boot parameters. Fix it here.
Theoretically this patch should repair kdump work where
it adds elfcorehdr= and memmap additional parameters
to second kernel.
Signed-off-by: Max Uvarov <muvarov@xxxxxxxxx>
---
drivers/of/fdt.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 3349d2a..5e897bf 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -969,10 +969,16 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
* is set in which case we override whatever was found earlier.
*/
#ifdef CONFIG_CMDLINE
-#ifndef CONFIG_CMDLINE_FORCE
+#if defined(CONFIG_CMDLINE_EXTEND)
+ strlcat(data, " ", COMMAND_LINE_SIZE);
+ strlcat(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
+#elif defined(CONFIG_CMDLINE_FORCE)
+ strlcpy(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
+#else
+ /* No arguments from boot loader, use kernel's cmdl*/
if (!((char *)data)[0])
-#endif
strlcpy(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
+#endif
#endif /* CONFIG_CMDLINE */
pr_debug("Command line is: %s\n", (char*)data);
--
1.9.1
--
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