diff options
Diffstat (limited to 'arch/sh/kernel/setup.c')
| -rw-r--r-- | arch/sh/kernel/setup.c | 98 |
1 files changed, 75 insertions, 23 deletions
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c index bca2bbc575db..e7152cc6930e 100644 --- a/arch/sh/kernel/setup.c +++ b/arch/sh/kernel/setup.c @@ -25,6 +25,10 @@ #include <linux/smp.h> #include <linux/err.h> #include <linux/debugfs.h> +#include <linux/crash_dump.h> +#include <linux/mmzone.h> +#include <linux/clk.h> +#include <linux/delay.h> #include <asm/uaccess.h> #include <asm/io.h> #include <asm/page.h> @@ -143,6 +147,7 @@ static void __init reserve_crashkernel(void) { unsigned long long free_mem; unsigned long long crash_size, crash_base; + void *vp; int ret; free_mem = ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT; @@ -151,12 +156,14 @@ static void __init reserve_crashkernel(void) &crash_size, &crash_base); if (ret == 0 && crash_size) { if (crash_base <= 0) { - printk(KERN_INFO "crashkernel reservation failed - " - "you have to specify a base address\n"); - return; - } - - if (reserve_bootmem(crash_base, crash_size, + vp = alloc_bootmem_nopanic(crash_size); + if (!vp) { + printk(KERN_INFO "crashkernel allocation " + "failed\n"); + return; + } + crash_base = __pa(vp); + } else if (reserve_bootmem(crash_base, crash_size, BOOTMEM_EXCLUSIVE) < 0) { printk(KERN_INFO "crashkernel reservation failed - " "memory is in use\n"); @@ -170,6 +177,7 @@ static void __init reserve_crashkernel(void) (unsigned long)(free_mem >> 20)); crashk_res.start = crash_base; crashk_res.end = crash_base + crash_size - 1; + insert_resource(&iomem_resource, &crashk_res); } } #else @@ -177,6 +185,24 @@ static inline void __init reserve_crashkernel(void) {} #endif +#ifndef CONFIG_GENERIC_CALIBRATE_DELAY +void __cpuinit calibrate_delay(void) +{ + struct clk *clk = clk_get(NULL, "cpu_clk"); + + if (IS_ERR(clk)) + panic("Need a sane CPU clock definition!"); + + loops_per_jiffy = (clk_get_rate(clk) >> 1) / HZ; + + printk(KERN_INFO "Calibrating delay loop (skipped)... " + "%lu.%02lu BogoMIPS PRESET (lpj=%lu)\n", + loops_per_jiffy/(500000/HZ), + (loops_per_jiffy/(5000/HZ)) % 100, + loops_per_jiffy); +} +#endif + void __init __add_active_range(unsigned int nid, unsigned long start_pfn, unsigned long end_pfn) { @@ -203,11 +229,6 @@ void __init __add_active_range(unsigned int nid, unsigned long start_pfn, request_resource(res, &data_resource); request_resource(res, &bss_resource); -#ifdef CONFIG_KEXEC - if (crashk_res.start != crashk_res.end) - request_resource(res, &crashk_res); -#endif - add_active_range(nid, start_pfn, end_pfn); } @@ -235,15 +256,17 @@ void __init setup_bootmem_allocator(unsigned long free_pfn) * case of us accidentally initializing the bootmem allocator with * an invalid RAM area. */ - reserve_bootmem(__MEMORY_START+PAGE_SIZE, - (PFN_PHYS(free_pfn)+bootmap_size+PAGE_SIZE-1)-__MEMORY_START, - BOOTMEM_DEFAULT); + reserve_bootmem(__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET, + (PFN_PHYS(free_pfn) + bootmap_size + PAGE_SIZE - 1) - + (__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET), + BOOTMEM_DEFAULT); /* * reserve physical page 0 - it's a special BIOS page on many boxes, * enabling clean reboots, SMP operation, laptop functions. */ - reserve_bootmem(__MEMORY_START, PAGE_SIZE, BOOTMEM_DEFAULT); + reserve_bootmem(__MEMORY_START, CONFIG_ZERO_PAGE_OFFSET, + BOOTMEM_DEFAULT); sparse_memory_present_with_active_regions(0); @@ -251,17 +274,18 @@ void __init setup_bootmem_allocator(unsigned long free_pfn) ROOT_DEV = Root_RAM0; if (LOADER_TYPE && INITRD_START) { - if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) { - reserve_bootmem(INITRD_START + __MEMORY_START, - INITRD_SIZE, BOOTMEM_DEFAULT); - initrd_start = INITRD_START + PAGE_OFFSET + - __MEMORY_START; + unsigned long initrd_start_phys = INITRD_START + __MEMORY_START; + + if (initrd_start_phys + INITRD_SIZE <= PFN_PHYS(max_low_pfn)) { + reserve_bootmem(initrd_start_phys, INITRD_SIZE, + BOOTMEM_DEFAULT); + initrd_start = (unsigned long)__va(initrd_start_phys); initrd_end = initrd_start + INITRD_SIZE; } else { printk("initrd extends beyond end of memory " - "(0x%08lx > 0x%08lx)\ndisabling initrd\n", - INITRD_START + INITRD_SIZE, - max_low_pfn << PAGE_SHIFT); + "(0x%08lx > 0x%08lx)\ndisabling initrd\n", + initrd_start_phys + INITRD_SIZE, + (unsigned long)PFN_PHYS(max_low_pfn)); initrd_start = 0; } } @@ -286,6 +310,25 @@ static void __init setup_memory(void) extern void __init setup_memory(void); #endif +/* + * Note: elfcorehdr_addr is not just limited to vmcore. It is also used by + * is_kdump_kernel() to determine if we are booting after a panic. Hence + * ifdef it under CONFIG_CRASH_DUMP and not CONFIG_PROC_VMCORE. + */ +#ifdef CONFIG_CRASH_DUMP +/* elfcorehdr= specifies the location of elf core header + * stored by the crashed kernel. + */ +static int __init parse_elfcorehdr(char *arg) +{ + if (!arg) + return -EINVAL; + elfcorehdr_addr = memparse(arg, &arg); + return 0; +} +early_param("elfcorehdr", parse_elfcorehdr); +#endif + void __init setup_arch(char **cmdline_p) { enable_mmu(); @@ -398,6 +441,7 @@ const char *get_cpu_subtype(struct sh_cpuinfo *c) { return cpu_name[c->type]; } +EXPORT_SYMBOL(get_cpu_subtype); #ifdef CONFIG_PROC_FS /* Symbolic CPU flags, keep in sync with asm/cpu-features.h */ @@ -452,6 +496,12 @@ static int show_cpuinfo(struct seq_file *m, void *v) seq_printf(m, "processor\t: %d\n", cpu); seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine); seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c)); + if (c->cut_major == -1) + seq_printf(m, "cut\t\t: unknown\n"); + else if (c->cut_minor == -1) + seq_printf(m, "cut\t\t: %d.x\n", c->cut_major); + else + seq_printf(m, "cut\t\t: %d.%d\n", c->cut_major, c->cut_minor); show_cpuflags(m, c); @@ -507,6 +557,8 @@ struct dentry *sh_debugfs_root; static int __init sh_debugfs_init(void) { sh_debugfs_root = debugfs_create_dir("sh", NULL); + if (!sh_debugfs_root) + return -ENOMEM; if (IS_ERR(sh_debugfs_root)) return PTR_ERR(sh_debugfs_root); |