Auto-update from upstream

3 files changed, 36 insertions, 2 deletions

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 840ae595a61..d961bfeed05 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -29,8 +29,8 @@ OBJCOPYFLAGS    := contents,alloc,load,readonly,data
 OBJCOPY_COFF_ARGS := -O aixcoff-rs6000 --set-start 0x500000
 OBJCOPY_MIB_ARGS  := -O aixcoff-rs6000 -R .stab -R .stabstr -R .comment
 
-zlib       := infblock.c infcodes.c inffast.c inflate.c inftrees.c infutil.c
-zlibheader := infblock.h infcodes.h inffast.h inftrees.h infutil.h
+zlib       := inffast.c inflate.c inftrees.c
+zlibheader := inffast.h inffixed.h inflate.h inftrees.h infutil.h
 zliblinuxheader := zlib.h zconf.h zutil.h
 
 $(addprefix $(obj)/,$(zlib) main.o): $(addprefix $(obj)/,$(zliblinuxheader)) $(addprefix $(obj)/,$(zlibheader))
diff --git a/arch/powerpc/boot/main.c b/arch/powerpc/boot/main.c
index 816446f0e49..b66634c9ea3 100644
--- a/arch/powerpc/boot/main.c
+++ b/arch/powerpc/boot/main.c
@@ -33,6 +33,14 @@ extern char _vmlinux_end[];
 extern char _initrd_start[];
 extern char _initrd_end[];
 
+/* A buffer that may be edited by tools operating on a zImage binary so as to
+ * edit the command line passed to vmlinux (by setting /chosen/bootargs).
+ * The buffer is put in it's own section so that tools may locate it easier.
+ */
+static char builtin_cmdline[512]
+	__attribute__((section("__builtin_cmdline")));
+
+
 struct addr_range {
 	unsigned long addr;
 	unsigned long size;
@@ -204,6 +212,23 @@ static int is_elf32(void *hdr)
 	return 1;
 }
 
+void export_cmdline(void* chosen_handle)
+{
+        int len;
+        char cmdline[2] = { 0, 0 };
+
+	if (builtin_cmdline[0] == 0)
+		return;
+
+        len = getprop(chosen_handle, "bootargs", cmdline, sizeof(cmdline));
+        if (len > 0 && cmdline[0] != 0)
+		return;
+
+	setprop(chosen_handle, "bootargs", builtin_cmdline,
+		strlen(builtin_cmdline) + 1);
+}
+
+
 void start(unsigned long a1, unsigned long a2, void *promptr, void *sp)
 {
 	int len;
@@ -289,6 +314,8 @@ void start(unsigned long a1, unsigned long a2, void *promptr, void *sp)
 		memmove((void *)vmlinux.addr,(void *)vmlinuz.addr,vmlinuz.size);
 	}
 
+	export_cmdline(chosen_handle);
+
 	/* Skip over the ELF header */
 #ifdef DEBUG
 	printf("... skipping 0x%lx bytes of ELF header\n\r",
diff --git a/arch/powerpc/boot/prom.h b/arch/powerpc/boot/prom.h
index 3e2ddd4a5a8..a57b184c564 100644
--- a/arch/powerpc/boot/prom.h
+++ b/arch/powerpc/boot/prom.h
@@ -31,4 +31,11 @@ static inline int getprop(void *phandle, const char *name,
 	return call_prom("getprop", 4, 1, phandle, name, buf, buflen);
 }
 
+
+static inline int setprop(void *phandle, const char *name,
+			  void *buf, int buflen)
+{
+	return call_prom("setprop", 4, 1, phandle, name, buf, buflen);
+}
+
 #endif				/* _PPC_BOOT_PROM_H_ */