diff options
Diffstat (limited to 'arch/sh/kernel/setup.c')
| -rw-r--r-- | arch/sh/kernel/setup.c | 65 |
1 files changed, 47 insertions, 18 deletions
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c index de832056bf1b..e7152cc6930e 100644 --- a/arch/sh/kernel/setup.c +++ b/arch/sh/kernel/setup.c @@ -26,6 +26,9 @@ #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> @@ -144,6 +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; @@ -152,12 +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"); @@ -179,6 +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) { @@ -232,15 +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); @@ -248,17 +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; } } @@ -530,6 +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); |