c6x: use boot_command_line instead of private c6x_command_line

Save some pointless copying of the kernel command line and just use
boot_command_line instead.

Also remove default_command_line as it is not referenced anywhere, and
the DT code already handles the default command line.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Tested-by: Mark Salter <msalter@redhat.com>
Acked-by: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: linux-c6x-dev@linux-c6x.org
Reviewed-by: Grant Likely <grant.likely@linaro.org>

4 files changed, 2 insertions, 19 deletions

diff --git a/arch/c6x/include/asm/setup.h b/arch/c6x/include/asm/setup.h
index ecead15872a6..696804475f55 100644
--- a/arch/c6x/include/asm/setup.h
+++ b/arch/c6x/include/asm/setup.h
@@ -14,8 +14,6 @@
 #include <uapi/asm/setup.h>
 
 #ifndef __ASSEMBLY__
-extern char c6x_command_line[COMMAND_LINE_SIZE];
-
 extern int c6x_add_memory(phys_addr_t start, unsigned long size);
 
 extern unsigned long ram_start;
diff --git a/arch/c6x/kernel/devicetree.c b/arch/c6x/kernel/devicetree.c
index 9e15ab9199b2..5e8c838c1dde 100644
--- a/arch/c6x/kernel/devicetree.c
+++ b/arch/c6x/kernel/devicetree.c
@@ -24,7 +24,7 @@ void __init early_init_devtree(void *params)
          * device-tree, including the platform type, initrd location and
          * size and more ...
          */
-        of_scan_flat_dt(early_init_dt_scan_chosen, c6x_command_line);
+        of_scan_flat_dt(early_init_dt_scan_chosen, boot_command_line);
 
         /* Scan memory nodes and rebuild MEMBLOCKs */
         of_scan_flat_dt(early_init_dt_scan_root, NULL);
diff --git a/arch/c6x/kernel/setup.c b/arch/c6x/kernel/setup.c
index f4e72bd8c103..0e5a812907d9 100644
--- a/arch/c6x/kernel/setup.c
+++ b/arch/c6x/kernel/setup.c
@@ -68,13 +68,6 @@ unsigned long ram_end;
 static unsigned long dma_start __initdata;
 static unsigned long dma_size __initdata;
 
-char c6x_command_line[COMMAND_LINE_SIZE];
-
-#if defined(CONFIG_CMDLINE_BOOL)
-static const char default_command_line[COMMAND_LINE_SIZE] __section(.cmdline) =
-        CONFIG_CMDLINE;
-#endif
-
 struct cpuinfo_c6x {
         const char *cpu_name;
         const char *cpu_voltage;
@@ -296,8 +289,6 @@ notrace void __init machine_init(unsigned long dt_ptr)
         /* Do some early initialization based on the flat device tree */
         early_init_devtree(fdt);
 
-        /* parse_early_param needs a boot_command_line */
-        strlcpy(boot_command_line, c6x_command_line, COMMAND_LINE_SIZE);
         parse_early_param();
 }
 
@@ -309,7 +300,7 @@ void __init setup_arch(char **cmdline_p)
         printk(KERN_INFO "Initializing kernel\n");
 
         /* Initialize command line */
-        *cmdline_p = c6x_command_line;
+        *cmdline_p = boot_command_line;
 
         memory_end = ram_end;
         memory_end &= ~(PAGE_SIZE - 1);
diff --git a/arch/c6x/kernel/vmlinux.lds.S b/arch/c6x/kernel/vmlinux.lds.S
index 279d80725128..5a6e141d1641 100644
--- a/arch/c6x/kernel/vmlinux.lds.S
+++ b/arch/c6x/kernel/vmlinux.lds.S
@@ -37,12 +37,6 @@ SECTIONS
                 _vectors_end = .;
         }
 
-        . = ALIGN(0x1000);
-        .cmdline :
-        {
-                *(.cmdline)
-        }
-
         /*
          * This section contains data which may be shared with other
          * cores. It needs to be a fixed offset from PAGE_OFFSET