/*
* Architecture-specific setup.
*
* Copyright (C) 1998-2001, 2003-2004 Hewlett-Packard Co
* David Mosberger-Tang <davidm@hpl.hp.com>
* Stephane Eranian <eranian@hpl.hp.com>
* Copyright (C) 2000, 2004 Intel Corp
* Rohit Seth <rohit.seth@intel.com>
* Suresh Siddha <suresh.b.siddha@intel.com>
* Gordon Jin <gordon.jin@intel.com>
* Copyright (C) 1999 VA Linux Systems
* Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
*
* 12/26/04 S.Siddha, G.Jin, R.Seth
* Add multi-threading and multi-core detection
* 11/12/01 D.Mosberger Convert get_cpuinfo() to seq_file based show_cpuinfo().
* 04/04/00 D.Mosberger renamed cpu_initialized to cpu_online_map
* 03/31/00 R.Seth cpu_initialized and current->processor fixes
* 02/04/00 D.Mosberger some more get_cpuinfo fixes...
* 02/01/00 R.Seth fixed get_cpuinfo for SMP
* 01/07/99 S.Eranian added the support for command line argument
* 06/24/99 W.Drummond added boot_cpu_data.
* 05/28/05 Z. Menyhart Dynamic stride size for "flush_icache_range()"
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/acpi.h>
#include <linux/bootmem.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/reboot.h>
#include <linux/sched.h>
#include <linux/seq_file.h>
#include <linux/string.h>
#include <linux/threads.h>
#include <linux/screen_info.h>
#include <linux/dmi.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/efi.h>
#include <linux/initrd.h>
#include <linux/pm.h>
#include <linux/cpufreq.h>
#include <linux/kexec.h>
#include <linux/crash_dump.h>
#include <asm/ia32.h>
#include <asm/machvec.h>
#include <asm/mca.h>
#include <asm/meminit.h>
#include <asm/page.h>
#include <asm/paravirt.h>
#include <asm/patch.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/sal.h>
#include <asm/sections.h>
#include <asm/setup.h>
#include <asm/smp.h>
#include <asm/system.h>
#include <asm/tlbflush.h>
#include <asm/unistd.h>
#include <asm/hpsim.h>
#if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE)
# error "struct cpuinfo_ia64 too big!"
#endif
#ifdef CONFIG_SMP
unsigned long __per_cpu_offset[NR_CPUS];
EXPORT_SYMBOL(__per_cpu_offset);
#endif
DEFINE_PER_CPU(struct cpuinfo_ia64, cpu_info);
DEFINE_PER_CPU(unsigned long, local_per_cpu_offset);
unsigned long ia64_cycles_per_usec;
struct ia64_boot_param *ia64_boot_param;
struct screen_info screen_info;
unsigned long vga_console_iobase;
unsigned long vga_console_membase;
static struct resource data_resource = {
.name = "Kernel data",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM
};
static struct resource code_resource = {
.name = "Kernel code",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM
};
static struct resource bss_resource = {
.name = "Kernel bss",
.flags = IORESOURCE_BUSY | IORESOURCE_MEM
};
unsigned long ia64_max_cacheline_size;
int dma_get_cache_alignment(void)
{
return ia64_max_cacheline_size;
}
EXPORT_SYMBOL(dma_get_cache_alignment);
unsigned long ia64_iobase; /* virtual address for I/O accesses */
EXPORT_SYMBOL(ia64_iobase);
struct io_space io_space[MAX_IO_SPACES];
EXPORT_SYMBOL(io_space);
unsigned int num_io_spaces;
/*
* "flush_icache_range()" needs to know what processor dependent stride size to use
* when it makes i-cache(s) coherent with d-caches.
*/
#define I_CACHE_STRIDE_SHIFT 5 /* Safest way to go: 32 bytes by 32 bytes */
unsigned long ia64_i_cache_stride_shift = ~0;
/*
* "clflush_cache_range()" needs to know what processor dependent stride size to
* use when it flushes cache lines including both d-cache and i-cache.
*/
/* Safest way to go: 32 bytes by 32 bytes */
#define CACHE_STRIDE_SHIFT 5
unsigned long ia64_cache_stride_shift = ~0;
/*
* The merge_mask variable needs to be set to (max(iommu_page_size(iommu)) - 1). This
* mask specifies a mask of address bits that must be 0 in order for two buffers to be
* mergeable by the I/O MMU (i.e., the end address of the first buffer and the start
* address of the second buffer must be aligned to (merge_mask+1) in order to be
* mergeable). By default, we assume there is no I/O MMU which can merge physically
* discontiguous buffers, so we set the merge_mask to ~0UL, which corresponds to a iommu
* page-size of 2^64.
*/
unsigned long ia64_max_iommu_merge_mask = ~0UL;
EXPORT_SYMBOL(ia64_max_iommu_merge_mask);
/*
* We use a special marker for the end of memory and it uses the extra (+1) slot
*/
struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initdata;
int num_rsvd_regions __initdata;
/*
* Filter incoming memory segments based on the primitive map created from the boot
* parameters. Segments contained in the map are removed from the memory ranges. A
* caller-specified function is called with the memory ranges that remain after filtering.
* This routine does not assume the incoming segments are sorted.
*/
int __init
filter_rsvd_memory (unsigned long start, unsigned long end, void *arg)
{
unsigned long range_start, range_end, prev_start;
void (*func)(unsigned long, unsigned long, int);
int i;
#if IGNORE_PFN0
if (start == PAGE_OFFSET) {
printk(KERN_WARNING "warning: skipping physical page 0\n");
start += PAGE_SIZE;
if (start >= end) return 0;
}
#endif
/*
* lowest possible address(walker uses virtual)
*/
prev_start = PAGE_OFFSET;
func = arg;
for (i = 0;