Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...

[firefly-linux-kernel-4.4.55.git] / arch / sh / kernel / setup.c

diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index c14a3e95d0b18c52e261a1d93ae8095d06640168..4156aac8c27d2113b1211d97178269a58aec2d9f 100644 (file)
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -22,6 +22,7 @@
 #include <linux/mm.h>
 #include <linux/kexec.h>
 #include <linux/module.h>
+#include <linux/smp.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 #include <asm/page.h>
@@ -31,18 +32,18 @@
 #include <asm/clock.h>
 #include <asm/mmu_context.h>
 
-extern void * __rd_start, * __rd_end;
-
-/*
- * Machine setup..
- */
-
 /*
  * Initialize loops_per_jiffy as 10000000 (1000MIPS).
  * This value will be used at the very early stage of serial setup.
  * The bigger value means no problem.
  */
-struct sh_cpuinfo boot_cpu_data = { CPU_SH_NONE, 10000000, };
+struct sh_cpuinfo cpu_data[NR_CPUS] __read_mostly = {
+       [0] = {
+               .type                   = CPU_SH_NONE,
+               .loops_per_jiffy        = 10000000,
+       },
+};
+EXPORT_SYMBOL(cpu_data);
 
 /*
  * The machine vector. First entry in .machvec.init, or clobbered by
@@ -56,33 +57,25 @@ struct screen_info screen_info;
 
 extern int root_mountflags;
 
-/*
- * This is set up by the setup-routine at boot-time
- */
-#define PARAM  ((unsigned char *)empty_zero_page)
-
-#define MOUNT_ROOT_RDONLY (*(unsigned long *) (PARAM+0x000))
-#define RAMDISK_FLAGS (*(unsigned long *) (PARAM+0x004))
-#define ORIG_ROOT_DEV (*(unsigned long *) (PARAM+0x008))
-#define LOADER_TYPE (*(unsigned long *) (PARAM+0x00c))
-#define INITRD_START (*(unsigned long *) (PARAM+0x010))
-#define INITRD_SIZE (*(unsigned long *) (PARAM+0x014))
-/* ... */
-#define COMMAND_LINE ((char *) (PARAM+0x100))
-
 #define RAMDISK_IMAGE_START_MASK       0x07FF
 #define RAMDISK_PROMPT_FLAG            0x8000
 #define RAMDISK_LOAD_FLAG              0x4000
 
 static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, };
 
-static struct resource code_resource = { .name = "Kernel code", };
-static struct resource data_resource = { .name = "Kernel data", };
+static struct resource code_resource = {
+       .name = "Kernel code",
+       .flags = IORESOURCE_BUSY | IORESOURCE_MEM,
+};
+
+static struct resource data_resource = {
+       .name = "Kernel data",
+       .flags = IORESOURCE_BUSY | IORESOURCE_MEM,
+};
 
 unsigned long memory_start;
 EXPORT_SYMBOL(memory_start);
-
-unsigned long memory_end;
+unsigned long memory_end = 0;
 EXPORT_SYMBOL(memory_end);
 
 static int __init early_parse_mem(char *p)
@@ -121,6 +114,37 @@ static void __init register_bootmem_low_pages(void)
        free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages));
 }
 
+#ifdef CONFIG_KEXEC
+static void __init reserve_crashkernel(void)
+{
+       unsigned long long free_mem;
+       unsigned long long crash_size, crash_base;
+       int ret;
+
+       free_mem = ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT;
+
+       ret = parse_crashkernel(boot_command_line, free_mem,
+                       &crash_size, &crash_base);
+       if (ret == 0 && crash_size) {
+               if (crash_base > 0) {
+                       printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
+                                       "for crashkernel (System RAM: %ldMB)\n",
+                                       (unsigned long)(crash_size >> 20),
+                                       (unsigned long)(crash_base >> 20),
+                                       (unsigned long)(free_mem >> 20));
+                       crashk_res.start = crash_base;
+                       crashk_res.end   = crash_base + crash_size - 1;
+                       reserve_bootmem(crash_base, crash_size);
+               } else
+                       printk(KERN_INFO "crashkernel reservation failed - "
+                                       "you have to specify a base address\n");
+       }
+}
+#else
+static inline void __init reserve_crashkernel(void)
+{}
+#endif
+
 void __init setup_bootmem_allocator(unsigned long free_pfn)
 {
        unsigned long bootmap_size;
@@ -157,14 +181,7 @@ void __init setup_bootmem_allocator(unsigned long free_pfn)
        sparse_memory_present_with_active_regions(0);
 
 #ifdef CONFIG_BLK_DEV_INITRD
-       ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
-       if (&__rd_start != &__rd_end) {
-               LOADER_TYPE = 1;
-               INITRD_START = PHYSADDR((unsigned long)&__rd_start) -
-                                       __MEMORY_START;
-               INITRD_SIZE = (unsigned long)&__rd_end -
-                             (unsigned long)&__rd_start;
-       }
+       ROOT_DEV = Root_RAM0;
 
        if (LOADER_TYPE && INITRD_START) {
                if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) {
@@ -182,11 +199,8 @@ void __init setup_bootmem_allocator(unsigned long free_pfn)
                }
        }
 #endif
-#ifdef CONFIG_KEXEC
-       if (crashk_res.start != crashk_res.end)
-               reserve_bootmem(crashk_res.start,
-                       crashk_res.end - crashk_res.start + 1);
-#endif
+
+       reserve_crashkernel();
 }
 
 #ifndef CONFIG_NEED_MULTIPLE_NODES
@@ -230,7 +244,8 @@ void __init setup_arch(char **cmdline_p)
        data_resource.end = virt_to_phys(_edata)-1;
 
        memory_start = (unsigned long)PAGE_OFFSET+__MEMORY_START;
-       memory_end = memory_start + __MEMORY_SIZE;
+       if (!memory_end)
+               memory_end = memory_start + __MEMORY_SIZE;
 
 #ifdef CONFIG_CMDLINE_BOOL
        strlcpy(command_line, CONFIG_CMDLINE, sizeof(command_line));
@@ -272,20 +287,22 @@ void __init setup_arch(char **cmdline_p)
                sh_mv.mv_setup(cmdline_p);
 
        paging_init();
+
+#ifdef CONFIG_SMP
+       plat_smp_setup();
+#endif
 }
 
 static const char *cpu_name[] = {
        [CPU_SH7206]    = "SH7206",     [CPU_SH7619]    = "SH7619",
-       [CPU_SH7300]    = "SH7300",
        [CPU_SH7705]    = "SH7705",     [CPU_SH7706]    = "SH7706",
        [CPU_SH7707]    = "SH7707",     [CPU_SH7708]    = "SH7708",
        [CPU_SH7709]    = "SH7709",     [CPU_SH7710]    = "SH7710",
-       [CPU_SH7712]    = "SH7712",
+       [CPU_SH7712]    = "SH7712",     [CPU_SH7720]    = "SH7720",
        [CPU_SH7729]    = "SH7729",     [CPU_SH7750]    = "SH7750",
        [CPU_SH7750S]   = "SH7750S",    [CPU_SH7750R]   = "SH7750R",
        [CPU_SH7751]    = "SH7751",     [CPU_SH7751R]   = "SH7751R",
-       [CPU_SH7760]    = "SH7760",     [CPU_SH73180]   = "SH73180",
-       [CPU_ST40RA]    = "ST40RA",     [CPU_ST40GX1]   = "ST40GX1",
+       [CPU_SH7760]    = "SH7760",
        [CPU_SH4_202]   = "SH4-202",    [CPU_SH4_501]   = "SH4-501",
        [CPU_SH7770]    = "SH7770",     [CPU_SH7780]    = "SH7780",
        [CPU_SH7781]    = "SH7781",     [CPU_SH7343]    = "SH7343",