[S390] codepage conversion of kernel parameter line

Move the ebcdic to ascii conversion of the kernel parameter line from
head.S to early.c and convert the assembler code to C.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 02e45861b55b..31d618a443af 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -405,8 +405,19 @@ static void __init append_to_cmdline(size_t (*ipl_data)(char *, size_t))
 
 static void __init setup_boot_command_line(void)
 {
+        int i;
+
+        /* convert arch command line to ascii */
+        for (i = 0; i < ARCH_COMMAND_LINE_SIZE; i++)
+                if (COMMAND_LINE[i] & 0x80)
+                        break;
+        if (i < ARCH_COMMAND_LINE_SIZE)
+                EBCASC(COMMAND_LINE, ARCH_COMMAND_LINE_SIZE);
+        COMMAND_LINE[ARCH_COMMAND_LINE_SIZE-1] = 0;
+
         /* copy arch command line */
-        strlcpy(boot_command_line, COMMAND_LINE, ARCH_COMMAND_LINE_SIZE);
+        strlcpy(boot_command_line, strstrip(COMMAND_LINE),
+                ARCH_COMMAND_LINE_SIZE);
 
         /* append IPL PARM data to the boot command line */
         if (MACHINE_IS_VM)