m68k: generalize uboot command line support

The uboot command line support needs to be used by both MMU and no-MMU
setups, but currently we only have the code in the no-MMU code paths.
Move the uboot command line processing code into its own file. Add
appropriate calls to it from both the MMU and no-MMU arch setup code.

Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>

diff --git a/arch/m68k/include/asm/bootinfo.h b/arch/m68k/include/asm/bootinfo.h
index 8e21326..81c91af 100644 (file)
--- a/arch/m68k/include/asm/bootinfo.h
+++ b/arch/m68k/include/asm/bootinfo.h
@@ -22,6 +22,12 @@ extern void save_bootinfo(const struct bi_record *bi);
 static inline void save_bootinfo(const struct bi_record *bi) {}
 #endif
 
+#ifdef CONFIG_UBOOT
+void process_uboot_commandline(char *commandp, int size);
+#else
+static inline void process_uboot_commandline(char *commandp, int size) {}
+#endif
+
 #endif /* __ASSEMBLY__ */
 
 

diff --git a/arch/m68k/kernel/Makefile b/arch/m68k/kernel/Makefile
index e47778f..8a1c4d3 100644 (file)
--- a/arch/m68k/kernel/Makefile
+++ b/arch/m68k/kernel/Makefile
@@ -24,6 +24,7 @@ obj-$(CONFIG_HAS_DMA) += dma.o
 
 obj-$(CONFIG_KEXEC)            += machine_kexec.o relocate_kernel.o
 obj-$(CONFIG_BOOTINFO_PROC)    += bootinfo_proc.o
+obj-$(CONFIG_UBOOT)            += uboot.o
 
 obj-$(CONFIG_EARLY_PRINTK)     += early_printk.o
 

diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c
index 9afad2b..9f61f51 100644 (file)
--- a/arch/m68k/kernel/setup_mm.c
+++ b/arch/m68k/kernel/setup_mm.c
@@ -274,6 +274,7 @@ void __init setup_arch(char **cmdline_p)
        strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE);
        m68k_command_line[CL_SIZE - 1] = 0;
 #endif /* CONFIG_BOOTPARAM */
+       process_uboot_commandline(&m68k_command_line[0], CL_SIZE);
        *cmdline_p = m68k_command_line;
        memcpy(boot_command_line, *cmdline_p, CL_SIZE);
 

diff --git a/arch/m68k/kernel/setup_no.c b/arch/m68k/kernel/setup_no.c
index 9309789..4bde2c1 100644 (file)
--- a/arch/m68k/kernel/setup_no.c
+++ b/arch/m68k/kernel/setup_no.c
@@ -34,6 +34,7 @@
 #include <linux/rtc.h>
 
 #include <asm/setup.h>
+#include <asm/bootinfo.h>
 #include <asm/irq.h>
 #include <asm/machdep.h>
 #include <asm/pgtable.h>
@@ -82,69 +83,6 @@ void (*mach_power_off)(void);
 #define        CPU_INSTR_PER_JIFFY     16
 #endif
 
-#if defined(CONFIG_UBOOT)
-/*
- * parse_uboot_commandline
- *
- * Copies u-boot commandline arguments and store them in the proper linux
- * variables.
- *
- * Assumes:
- *     _init_sp global contains the address in the stack pointer when the
- *     kernel starts (see head.S::_start)
- *
- *     U-Boot calling convention:
- *     (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
- *
- *     _init_sp can be parsed as such
- *
- *     _init_sp+00 = u-boot cmd after jsr into kernel (skip)
- *     _init_sp+04 = &kernel board_info (residual data)
- *     _init_sp+08 = &initrd_start
- *     _init_sp+12 = &initrd_end
- *     _init_sp+16 = &cmd_start
- *     _init_sp+20 = &cmd_end
- *
- *     This also assumes that the memory locations pointed to are still
- *     unmodified. U-boot places them near the end of external SDRAM.
- *
- * Argument(s):
- *     commandp = the linux commandline arg container to fill.
- *     size     = the sizeof commandp.
- *
- * Returns:
- */
-static void __init parse_uboot_commandline(char *commandp, int size)
-{
-       extern unsigned long _init_sp;
-       unsigned long *sp;
-       unsigned long uboot_kbd;
-       unsigned long uboot_initrd_start, uboot_initrd_end;
-       unsigned long uboot_cmd_start, uboot_cmd_end;
-
-
-       sp = (unsigned long *)_init_sp;
-       uboot_kbd = sp[1];
-       uboot_initrd_start = sp[2];
-       uboot_initrd_end = sp[3];
-       uboot_cmd_start = sp[4];
-       uboot_cmd_end = sp[5];
-
-       if (uboot_cmd_start && uboot_cmd_end)
-               strncpy(commandp, (const char *)uboot_cmd_start, size);
-#if defined(CONFIG_BLK_DEV_INITRD)
-       if (uboot_initrd_start && uboot_initrd_end &&
-               (uboot_initrd_end > uboot_initrd_start)) {
-               initrd_start = uboot_initrd_start;
-               initrd_end = uboot_initrd_end;
-               ROOT_DEV = Root_RAM0;
-               printk(KERN_INFO "initrd at 0x%lx:0x%lx\n",
-                       initrd_start, initrd_end);
-       }
-#endif /* if defined(CONFIG_BLK_DEV_INITRD) */
-}
-#endif /* #if defined(CONFIG_UBOOT) */
-
 void __init setup_arch(char **cmdline_p)
 {
        int bootmap_size;
@@ -164,22 +102,7 @@ void __init setup_arch(char **cmdline_p)
        command_line[sizeof(command_line) - 1] = 0;
 #endif /* CONFIG_BOOTPARAM */
 
-#if defined(CONFIG_UBOOT)
-       /* CONFIG_UBOOT and CONFIG_BOOTPARAM defined, concatenate cmdline */
-       #if defined(CONFIG_BOOTPARAM)
-               /* Add the whitespace separator */
-               command_line[strlen(CONFIG_BOOTPARAM_STRING)] = ' ';
-               /* Parse uboot command line into the rest of the buffer */
-               parse_uboot_commandline(
-                       &command_line[(strlen(CONFIG_BOOTPARAM_STRING)+1)],
-                       (sizeof(command_line) -
-                       (strlen(CONFIG_BOOTPARAM_STRING)+1)));
-       /* Only CONFIG_UBOOT defined, create cmdline */
-       #else
-               parse_uboot_commandline(&command_line[0], sizeof(command_line));
-       #endif /* CONFIG_BOOTPARAM */
-       command_line[sizeof(command_line) - 1] = 0;
-#endif /* CONFIG_UBOOT */
+       process_uboot_commandline(&command_line[0], sizeof(command_line));
 
        printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU_NAME "\n");
 

diff --git a/arch/m68k/kernel/uboot.c b/arch/m68k/kernel/uboot.c
new file mode 100644 (file)
index 0000000..b3536a8
--- /dev/null
+++ b/arch/m68k/kernel/uboot.c
@@ -0,0 +1,107 @@
+/*
+ * uboot.c -- uboot arguments support
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/fb.h>
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/console.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/bootmem.h>
+#include <linux/seq_file.h>
+#include <linux/init.h>
+#include <linux/initrd.h>
+#include <linux/root_dev.h>
+#include <linux/rtc.h>
+
+#include <asm/setup.h>
+#include <asm/irq.h>
+#include <asm/machdep.h>
+#include <asm/pgtable.h>
+#include <asm/sections.h>
+
+/*
+ * parse_uboot_commandline
+ *
+ * Copies u-boot commandline arguments and store them in the proper linux
+ * variables.
+ *
+ * Assumes:
+ *     _init_sp global contains the address in the stack pointer when the
+ *     kernel starts (see head.S::_start)
+ *
+ *     U-Boot calling convention:
+ *     (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
+ *
+ *     _init_sp can be parsed as such
+ *
+ *     _init_sp+00 = u-boot cmd after jsr into kernel (skip)
+ *     _init_sp+04 = &kernel board_info (residual data)
+ *     _init_sp+08 = &initrd_start
+ *     _init_sp+12 = &initrd_end
+ *     _init_sp+16 = &cmd_start
+ *     _init_sp+20 = &cmd_end
+ *
+ *     This also assumes that the memory locations pointed to are still
+ *     unmodified. U-boot places them near the end of external SDRAM.
+ *
+ * Argument(s):
+ *     commandp = the linux commandline arg container to fill.
+ *     size     = the sizeof commandp.
+ *
+ * Returns:
+ */
+static void __init parse_uboot_commandline(char *commandp, int size)
+{
+       extern unsigned long _init_sp;
+       unsigned long *sp;
+       unsigned long uboot_kbd;
+       unsigned long uboot_initrd_start, uboot_initrd_end;
+       unsigned long uboot_cmd_start, uboot_cmd_end;
+
+       sp = (unsigned long *)_init_sp;
+       uboot_kbd = sp[1];
+       uboot_initrd_start = sp[2];
+       uboot_initrd_end = sp[3];
+       uboot_cmd_start = sp[4];
+       uboot_cmd_end = sp[5];
+
+       if (uboot_cmd_start && uboot_cmd_end)
+               strncpy(commandp, (const char *)uboot_cmd_start, size);
+#if defined(CONFIG_BLK_DEV_INITRD)
+       if (uboot_initrd_start && uboot_initrd_end &&
+           (uboot_initrd_end > uboot_initrd_start)) {
+               initrd_start = uboot_initrd_start;
+               initrd_end = uboot_initrd_end;
+               ROOT_DEV = Root_RAM0;
+               printk(KERN_INFO "initrd at 0x%lx:0x%lx\n",
+                       initrd_start, initrd_end);
+       }
+#endif /* if defined(CONFIG_BLK_DEV_INITRD) */
+}
+
+__init void process_uboot_commandline(char *commandp, int size)
+{
+       int len, n;
+
+       n = strnlen(commandp, size);
+       commandp += n;
+       len = size - n;
+       if (len) {
+               /* Add the whitespace separator */
+               *commandp++ = ' ';
+               len--;
+       }
+
+       parse_uboot_commandline(commandp, len);
+       commandp[size - 1] = 0;
+}