From b4b7ff4b08e691656c9d77c758fc355833128ac0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 20 Jan 2016 14:01:31 -0300
Subject: Linux-libre 4.4-gnu

---
 arch/mips/kernel/setup.c | 29 ++++++++++++++++++++++-------
 1 file changed, 22 insertions(+), 7 deletions(-)

(limited to 'arch/mips/kernel/setup.c')

diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 479515109..66aac55df 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -33,11 +33,16 @@
 #include <asm/cache.h>
 #include <asm/cdmm.h>
 #include <asm/cpu.h>
+#include <asm/debug.h>
 #include <asm/sections.h>
 #include <asm/setup.h>
 #include <asm/smp-ops.h>
 #include <asm/prom.h>
 
+#ifdef CONFIG_MIPS_ELF_APPENDED_DTB
+const char __section(.appended_dtb) __appended_dtb[0x100000];
+#endif /* CONFIG_MIPS_ELF_APPENDED_DTB */
+
 struct cpuinfo_mips cpu_data[NR_CPUS] __read_mostly;
 
 EXPORT_SYMBOL(cpu_data);
@@ -616,6 +621,10 @@ static void __init request_crashkernel(struct resource *res)
 }
 #endif /* !defined(CONFIG_KEXEC)  */
 
+#define USE_PROM_CMDLINE	IS_ENABLED(CONFIG_MIPS_CMDLINE_FROM_BOOTLOADER)
+#define USE_DTB_CMDLINE		IS_ENABLED(CONFIG_MIPS_CMDLINE_FROM_DTB)
+#define EXTEND_WITH_PROM	IS_ENABLED(CONFIG_MIPS_CMDLINE_EXTEND)
+
 static void __init arch_mem_init(char **cmdline_p)
 {
 	struct memblock_region *reg;
@@ -640,18 +649,24 @@ static void __init arch_mem_init(char **cmdline_p)
 	pr_info("Determined physical RAM map:\n");
 	print_memory_map();
 
-#ifdef CONFIG_CMDLINE_BOOL
-#ifdef CONFIG_CMDLINE_OVERRIDE
+#if defined(CONFIG_CMDLINE_BOOL) && defined(CONFIG_CMDLINE_OVERRIDE)
 	strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
 #else
+	if ((USE_PROM_CMDLINE && arcs_cmdline[0]) ||
+	    (USE_DTB_CMDLINE && !boot_command_line[0]))
+		strlcpy(boot_command_line, arcs_cmdline, COMMAND_LINE_SIZE);
+
+	if (EXTEND_WITH_PROM && arcs_cmdline[0]) {
+		strlcat(boot_command_line, " ", COMMAND_LINE_SIZE);
+		strlcat(boot_command_line, arcs_cmdline, COMMAND_LINE_SIZE);
+	}
+
+#if defined(CONFIG_CMDLINE_BOOL)
 	if (builtin_cmdline[0]) {
-		strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
-		strlcat(arcs_cmdline, builtin_cmdline, COMMAND_LINE_SIZE);
+		strlcat(boot_command_line, " ", COMMAND_LINE_SIZE);
+		strlcat(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
 	}
-	strlcpy(boot_command_line, arcs_cmdline, COMMAND_LINE_SIZE);
 #endif
-#else
-	strlcpy(boot_command_line, arcs_cmdline, COMMAND_LINE_SIZE);
 #endif
 	strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
 
-- 
cgit v1.2.3-54-g00ecf