MIPS: Loongson: Split the implementation of prom and setup parts

This patch split the old initilization and setup implementation to
several file, one file one logic function.

the other main changes include:

	1. as the script/checkpatch.pl suggests, use strict_strtol instead
	of simple_strtol in arch/mips/lemote/lm2e/cmdline.c

	2. use the existed macros in asm/mips-boards/bonito64.h as the
	arguments of set_io_port_base() and remove the un-needed ones in
	asm/mach-lemote/pci.h

Signed-off-by: Wu Zhangjin <wuzj@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

9 files changed, 168 insertions, 86 deletions

diff --git a/arch/mips/include/asm/mach-lemote/pci.h b/arch/mips/include/asm/mach-lemote/pci.h
index ea6aa143b78e..0307e4935267 100644
--- a/arch/mips/include/asm/mach-lemote/pci.h
+++ b/arch/mips/include/asm/mach-lemote/pci.h
@@ -25,6 +25,5 @@
 #define LOONGSON2E_PCI_MEM_START        0x14000000UL
 #define LOONGSON2E_PCI_MEM_END          0x1fffffffUL
 #define LOONGSON2E_PCI_IO_START         0x00004000UL
-#define LOONGSON2E_IO_PORT_BASE         0x1fd00000UL
 
 #endif /* !_LEMOTE_PCI_H_ */
diff --git a/arch/mips/lemote/lm2e/Makefile b/arch/mips/lemote/lm2e/Makefile
index f19173252d6a..a5bc1efc362a 100644
--- a/arch/mips/lemote/lm2e/Makefile
+++ b/arch/mips/lemote/lm2e/Makefile
@@ -2,7 +2,8 @@
 # Makefile for Lemote Fulong mini-PC board.
 #
 
-obj-y += setup.o prom.o reset.o irq.o pci.o bonito-irq.o mem.o
+obj-y += setup.o init.o reset.o irq.o pci.o bonito-irq.o mem.o \
+                env.o cmdline.o time.o machtype.o
 
 #
 # Early printk support
diff --git a/arch/mips/lemote/lm2e/prom.c b/arch/mips/lemote/lm2e/cmdline.c
index d78cedf28c1f..442b93587e86 100644
--- a/arch/mips/lemote/lm2e/prom.c
+++ b/arch/mips/lemote/lm2e/cmdline.c
@@ -9,83 +9,45 @@
  * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
  * Author: Fuxin Zhang, zhangfx@lemote.com
  *
+ * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
+ * Author: Wu Zhangjin, wuzj@lemote.com
+ *
  * This program is free software; you can redistribute  it and/or modify it
  * under  the terms of  the GNU General  Public License as published by the
  * Free Software Foundation;  either version 2 of the  License, or (at your
  * option) any later version.
  */
+#include <linux/io.h>
 #include <linux/init.h>
-#include <linux/bootmem.h>
-#include <asm/bootinfo.h>
 
-extern unsigned long bus_clock;
-extern unsigned long cpu_clock_freq;
-extern unsigned int memsize, highmemsize;
+#include <asm/bootinfo.h>
 
-static int argc;
+int prom_argc;
 /* pmon passes arguments in 32bit pointers */
-static int *arg;
-static int *env;
-
-const char *get_system_type(void)
-{
-        return "lemote-fulong";
-}
+int *_prom_argv;
 
 void __init prom_init_cmdline(void)
 {
         int i;
         long l;
 
+        /* firmware arguments are initialized in head.S */
+        prom_argc = fw_arg0;
+        _prom_argv = (int *)fw_arg1;
+
         /* arg[0] is "g", the rest is boot parameters */
         arcs_cmdline[0] = '\0';
-        for (i = 1; i < argc; i++) {
-                l = (long)arg[i];
+        for (i = 1; i < prom_argc; i++) {
+                l = (long)_prom_argv[i];
                 if (strlen(arcs_cmdline) + strlen(((char *)l) + 1)
                     >= sizeof(arcs_cmdline))
                         break;
                 strcat(arcs_cmdline, ((char *)l));
                 strcat(arcs_cmdline, " ");
         }
-}
-
-void __init prom_init(void)
-{
-        long l;
-        argc = fw_arg0;
-        arg = (int *)fw_arg1;
-        env = (int *)fw_arg2;
-
-        prom_init_cmdline();
 
         if ((strstr(arcs_cmdline, "console=")) == NULL)
                 strcat(arcs_cmdline, " console=ttyS0,115200");
         if ((strstr(arcs_cmdline, "root=")) == NULL)
                 strcat(arcs_cmdline, " root=/dev/hda1");
-
-#define parse_even_earlier(res, option, p)                              \
-do {                                                                    \
-        if (strncmp(option, (char *)p, strlen(option)) == 0)            \
-                res = simple_strtol((char *)p + strlen(option"="),      \
-                                    NULL, 10);                          \
-} while (0)
-
-        l = (long)*env;
-        while (l != 0) {
-                parse_even_earlier(bus_clock, "busclock", l);
-                parse_even_earlier(cpu_clock_freq, "cpuclock", l);
-                parse_even_earlier(memsize, "memsize", l);
-                parse_even_earlier(highmemsize, "highmemsize", l);
-                env++;
-                l = (long)*env;
-        }
-        if (memsize == 0)
-                memsize = 256;
-
-        pr_info("busclock=%ld, cpuclock=%ld,memsize=%d,highmemsize=%d\n",
-               bus_clock, cpu_clock_freq, memsize, highmemsize);
-}
-
-void __init prom_free_prom_memory(void)
-{
 }
diff --git a/arch/mips/lemote/lm2e/env.c b/arch/mips/lemote/lm2e/env.c
new file mode 100644
index 000000000000..9e88409f7a3a
--- /dev/null
+++ b/arch/mips/lemote/lm2e/env.c
@@ -0,0 +1,60 @@
+/*
+ * Based on Ocelot Linux port, which is
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: jsun@mvista.com or jsun@junsun.net
+ *
+ * Copyright 2003 ICT CAS
+ * Author: Michael Guo <guoyi@ict.ac.cn>
+ *
+ * Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ *
+ * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
+ * Author: Wu Zhangjin, wuzj@lemote.com
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/io.h>
+#include <linux/init.h>
+
+#include <asm/bootinfo.h>
+
+unsigned long bus_clock, cpu_clock_freq;
+unsigned long memsize, highmemsize;
+
+/* pmon passes arguments in 32bit pointers */
+int *_prom_envp;
+
+#define parse_even_earlier(res, option, p)                              \
+do {                                                                    \
+        if (strncmp(option, (char *)p, strlen(option)) == 0)            \
+                        strict_strtol((char *)p + strlen(option"="),    \
+                                        10, &res);                      \
+} while (0)
+
+void __init prom_init_env(void)
+{
+        long l;
+
+        /* firmware arguments are initialized in head.S */
+        _prom_envp = (int *)fw_arg2;
+
+        l = (long)*_prom_envp;
+        while (l != 0) {
+                parse_even_earlier(bus_clock, "busclock", l);
+                parse_even_earlier(cpu_clock_freq, "cpuclock", l);
+                parse_even_earlier(memsize, "memsize", l);
+                parse_even_earlier(highmemsize, "highmemsize", l);
+                _prom_envp++;
+                l = (long)*_prom_envp;
+        }
+        if (memsize == 0)
+                memsize = 256;
+
+        pr_info("busclock=%ld, cpuclock=%ld, memsize=%ld, highmemsize=%ld\n",
+                bus_clock, cpu_clock_freq, memsize, highmemsize);
+}
diff --git a/arch/mips/lemote/lm2e/init.c b/arch/mips/lemote/lm2e/init.c
new file mode 100644
index 000000000000..6fe624d697ed
--- /dev/null
+++ b/arch/mips/lemote/lm2e/init.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
+ * Author: Wu Zhangjin, wuzj@lemote.com
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/bootmem.h>
+
+#include <asm/bootinfo.h>
+#include <asm/mips-boards/bonito64.h>
+
+extern void __init prom_init_cmdline(void);
+extern void __init prom_init_env(void);
+extern void __init prom_init_memory(void);
+
+void __init prom_init(void)
+{
+    /* init base address of io space */
+        set_io_port_base((unsigned long)
+                ioremap(BONITO_PCIIO_BASE, BONITO_PCIIO_SIZE));
+
+        prom_init_cmdline();
+        prom_init_env();
+        prom_init_memory();
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
diff --git a/arch/mips/lemote/lm2e/machtype.c b/arch/mips/lemote/lm2e/machtype.c
new file mode 100644
index 000000000000..8d803eea7872
--- /dev/null
+++ b/arch/mips/lemote/lm2e/machtype.c
@@ -0,0 +1,15 @@
+/*
+ * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
+ * Author: Wu Zhangjin, wuzj@lemote.com
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+const char *get_system_type(void)
+{
+        return "lemote-fulong";
+}
+
diff --git a/arch/mips/lemote/lm2e/mem.c b/arch/mips/lemote/lm2e/mem.c
index 16cd21587d34..f24af70b669b 100644
--- a/arch/mips/lemote/lm2e/mem.c
+++ b/arch/mips/lemote/lm2e/mem.c
@@ -8,6 +8,19 @@
 #include <linux/fcntl.h>
 #include <linux/mm.h>
 
+#include <asm/bootinfo.h>
+
+extern unsigned long memsize, highmemsize;
+
+void __init prom_init_memory(void)
+{
+    add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
+#ifdef CONFIG_64BIT
+    if (highmemsize > 0)
+                add_memory_region(0x20000000, highmemsize << 20, BOOT_MEM_RAM);
+#endif /* CONFIG_64BIT */
+}
+
 /* override of arch/mips/mm/cache.c: __uncached_access */
 int __uncached_access(struct file *file, unsigned long addr)
 {
diff --git a/arch/mips/lemote/lm2e/setup.c b/arch/mips/lemote/lm2e/setup.c
index 79dae630611a..03578cf0ee7e 100644
--- a/arch/mips/lemote/lm2e/setup.c
+++ b/arch/mips/lemote/lm2e/setup.c
@@ -26,37 +26,16 @@
  *  675 Mass Ave, Cambridge, MA 02139, USA.
  *
  */
-#include <linux/bootmem.h>
 #include <linux/init.h>
-#include <linux/irq.h>
+#include <linux/module.h>
 
-#include <asm/bootinfo.h>
-#include <asm/mc146818-time.h>
-#include <asm/time.h>
 #include <asm/wbflush.h>
-#include <asm/mach-lemote/pci.h>
 
 #ifdef CONFIG_VT
 #include <linux/console.h>
 #include <linux/screen_info.h>
 #endif
 
-unsigned long cpu_clock_freq;
-unsigned long bus_clock;
-unsigned int memsize;
-unsigned int highmemsize = 0;
-
-void __init plat_time_init(void)
-{
-        /* setup mips r4k timer */
-        mips_hpt_frequency = cpu_clock_freq / 2;
-}
-
-unsigned long read_persistent_clock(void)
-{
-        return mc146818_get_cmos_time();
-}
-
 void (*__wbflush)(void);
 EXPORT_SYMBOL(__wbflush);
 
@@ -73,18 +52,8 @@ static void wbflush_loongson2e(void)
 
 void __init plat_mem_setup(void)
 {
-        set_io_port_base((unsigned long)ioremap(LOONGSON2E_IO_PORT_BASE,
-                                IO_SPACE_LIMIT - LOONGSON2E_PCI_IO_START + 1));
-
         __wbflush = wbflush_loongson2e;
 
-        add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
-#ifdef CONFIG_64BIT
-        if (highmemsize > 0) {
-                add_memory_region(0x20000000, highmemsize << 20, BOOT_MEM_RAM);
-        }
-#endif
-
 #ifdef CONFIG_VT
 #if defined(CONFIG_VGA_CONSOLE)
         conswitchp = &vga_con;
@@ -104,5 +73,4 @@ void __init plat_mem_setup(void)
         conswitchp = &dummy_con;
 #endif
 #endif
-
 }
diff --git a/arch/mips/lemote/lm2e/time.c b/arch/mips/lemote/lm2e/time.c
new file mode 100644
index 000000000000..b9d3f11b6203
--- /dev/null
+++ b/arch/mips/lemote/lm2e/time.c
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ *
+ * Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
+ * Author: Wu Zhangjin, wuzj@lemote.com
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ */
+
+#include <linux/init.h>
+
+#include <asm/mc146818-time.h>
+#include <asm/time.h>
+
+extern unsigned long cpu_clock_freq;
+
+void __init plat_time_init(void)
+{
+        /* setup mips r4k timer */
+        mips_hpt_frequency = cpu_clock_freq / 2;
+}
+
+unsigned long read_persistent_clock(void)
+{
+        return mc146818_get_cmos_time();
+}