[MIPS] Probe initrd header only if explicitly specified

[linux-2.6-omap-h63xx.git] / arch / mips / kernel / setup.c

diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index c6a063b2a0d9fcc9a7296a580f8c4ee65b0b89f3..16f8edfe5cdce81a63d850980cb0dda08e94049f 100644 (file)
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -68,13 +68,6 @@ static char command_line[CL_SIZE];
 const unsigned long mips_io_port_base __read_mostly = -1;
 EXPORT_SYMBOL(mips_io_port_base);
 
-/*
- * isa_slot_offset is the address where E(ISA) busaddress 0 is mapped
- * for the processor.
- */
-unsigned long isa_slot_offset;
-EXPORT_SYMBOL(isa_slot_offset);
-
 static struct resource code_resource = { .name = "Kernel code", };
 static struct resource data_resource = { .name = "Kernel data", };
 
@@ -85,7 +78,7 @@ void __init add_memory_region(phys_t start, phys_t size, long type)
 
        /* Sanity check */
        if (start + size < start) {
-               printk("Trying to add an invalid memory region, skipped\n");
+               pr_warning("Trying to add an invalid memory region, skipped\n");
                return;
        }
 
@@ -99,7 +92,7 @@ void __init add_memory_region(phys_t start, phys_t size, long type)
        }
 
        if (x == BOOT_MEM_MAP_MAX) {
-               printk("Ooops! Too many entries in the memory map!\n");
+               pr_err("Ooops! Too many entries in the memory map!\n");
                return;
        }
 
@@ -115,22 +108,22 @@ static void __init print_memory_map(void)
        const int field = 2 * sizeof(unsigned long);
 
        for (i = 0; i < boot_mem_map.nr_map; i++) {
-               printk(" memory: %0*Lx @ %0*Lx ",
+               printk(KERN_INFO " memory: %0*Lx @ %0*Lx ",
                       field, (unsigned long long) boot_mem_map.map[i].size,
                       field, (unsigned long long) boot_mem_map.map[i].addr);
 
                switch (boot_mem_map.map[i].type) {
                case BOOT_MEM_RAM:
-                       printk("(usable)\n");
+                       printk(KERN_CONT "(usable)\n");
                        break;
                case BOOT_MEM_ROM_DATA:
-                       printk("(ROM data)\n");
+                       printk(KERN_CONT "(ROM data)\n");
                        break;
                case BOOT_MEM_RESERVED:
-                       printk("(reserved)\n");
+                       printk(KERN_CONT "(reserved)\n");
                        break;
                default:
-                       printk("type %lu\n", boot_mem_map.map[i].type);
+                       printk(KERN_CONT "type %lu\n", boot_mem_map.map[i].type);
                        break;
                }
        }
@@ -167,36 +160,39 @@ early_param("rd_size", rd_size_early);
 static unsigned long __init init_initrd(void)
 {
        unsigned long end;
-       u32 *initrd_header;
 
        /*
         * Board specific code or command line parser should have
         * already set up initrd_start and initrd_end. In these cases
         * perfom sanity checks and use them if all looks good.
         */
-       if (initrd_start && initrd_end > initrd_start)
-               goto sanitize;
+       if (!initrd_start || initrd_end <= initrd_start) {
+#ifdef CONFIG_PROBE_INITRD_HEADER
+               u32 *initrd_header;
 
-       /*
-        * See if initrd has been added to the kernel image by
-        * arch/mips/boot/addinitrd.c. In that case a header is
-        * prepended to initrd and is made up by 8 bytes. The fisrt
-        * word is a magic number and the second one is the size of
-        * initrd.  Initrd start must be page aligned in any cases.
-        */
-       initrd_header = __va(PAGE_ALIGN(__pa_symbol(&_end) + 8)) - 8;
-       if (initrd_header[0] != 0x494E5244)
+               /*
+                * See if initrd has been added to the kernel image by
+                * arch/mips/boot/addinitrd.c. In that case a header is
+                * prepended to initrd and is made up by 8 bytes. The first
+                * word is a magic number and the second one is the size of
+                * initrd.  Initrd start must be page aligned in any cases.
+                */
+               initrd_header = __va(PAGE_ALIGN(__pa_symbol(&_end) + 8)) - 8;
+               if (initrd_header[0] != 0x494E5244)
+                       goto disable;
+               initrd_start = (unsigned long)(initrd_header + 2);
+               initrd_end = initrd_start + initrd_header[1];
+#else
                goto disable;
-       initrd_start = (unsigned long)(initrd_header + 2);
-       initrd_end = initrd_start + initrd_header[1];
+#endif
+       }
 
-sanitize:
        if (initrd_start & ~PAGE_MASK) {
-               printk(KERN_ERR "initrd start must be page aligned\n");
+               pr_err("initrd start must be page aligned\n");
                goto disable;
        }
        if (initrd_start < PAGE_OFFSET) {
-               printk(KERN_ERR "initrd start < PAGE_OFFSET\n");
+               pr_err("initrd start < PAGE_OFFSET\n");
                goto disable;
        }
 
@@ -228,18 +224,18 @@ static void __init finalize_initrd(void)
                goto disable;
        }
        if (__pa(initrd_end) > PFN_PHYS(max_low_pfn)) {
-               printk("Initrd extends beyond end of memory");
+               printk(KERN_ERR "Initrd extends beyond end of memory");
                goto disable;
        }
 
        reserve_bootmem(__pa(initrd_start), size, BOOTMEM_DEFAULT);
        initrd_below_start_ok = 1;
 
-       printk(KERN_INFO "Initial ramdisk at: 0x%lx (%lu bytes)\n",
-              initrd_start, size);
+       pr_info("Initial ramdisk at: 0x%lx (%lu bytes)\n",
+               initrd_start, size);
        return;
 disable:
-       printk(" - disabling initrd\n");
+       printk(KERN_CONT " - disabling initrd\n");
        initrd_start = 0;
        initrd_end = 0;
 }
@@ -317,14 +313,12 @@ static void __init bootmem_init(void)
        if (min_low_pfn >= max_low_pfn)
                panic("Incorrect memory mapping !!!");
        if (min_low_pfn > ARCH_PFN_OFFSET) {
-               printk(KERN_INFO
-                      "Wasting %lu bytes for tracking %lu unused pages\n",
-                      (min_low_pfn - ARCH_PFN_OFFSET) * sizeof(struct page),
-                      min_low_pfn - ARCH_PFN_OFFSET);
+               pr_info("Wasting %lu bytes for tracking %lu unused pages\n",
+                       (min_low_pfn - ARCH_PFN_OFFSET) * sizeof(struct page),
+                       min_low_pfn - ARCH_PFN_OFFSET);
        } else if (min_low_pfn < ARCH_PFN_OFFSET) {
-               printk(KERN_INFO
-                      "%lu free pages won't be used\n",
-                      ARCH_PFN_OFFSET - min_low_pfn);
+               pr_info("%lu free pages won't be used\n",
+                       ARCH_PFN_OFFSET - min_low_pfn);
        }
        min_low_pfn = ARCH_PFN_OFFSET;
 
@@ -478,7 +472,7 @@ static void __init arch_mem_init(char **cmdline_p)
        /* call board setup routine */
        plat_mem_setup();
 
-       printk("Determined physical RAM map:\n");
+       pr_info("Determined physical RAM map:\n");
        print_memory_map();
 
        strlcpy(command_line, arcs_cmdline, sizeof(command_line));
@@ -489,7 +483,7 @@ static void __init arch_mem_init(char **cmdline_p)
        parse_early_param();
 
        if (usermem) {
-               printk("User-defined physical RAM map:\n");
+               pr_info("User-defined physical RAM map:\n");
                print_memory_map();
        }
 
@@ -557,11 +551,7 @@ void __init setup_arch(char **cmdline_p)
        prom_init();
 
 #ifdef CONFIG_EARLY_PRINTK
-       {
-               extern void setup_early_printk(void);
-
-               setup_early_printk();
-       }
+       setup_early_printk();
 #endif
        cpu_report();
        check_bugs_early();