diff -puN /dev/null kexec/arch/ia64/crashdump-ia64.c
--- /dev/null 2006-07-13 05:14:41.629277080 +0530
+++ kexec-tools-1.101-kdump-maneesh/kexec/arch/ia64/crashdump-ia64.c 2006-07-13 14:42:05.000000000 +0530
@@ -0,0 +1,351 @@
+/*
+ * kexec: crashdum support
+ * Copyright (C) 2005-2006 Zou Nan hai <nanhai.zou@intel.com> Intel Corp
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
+#include <elf.h>
+#include "../../kexec.h"
+#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
+#include "kexec-ia64.h"
+#include "crashdump-ia64.h"
+
+int memory_ranges = 0;
+#define LOAD_OFFSET (0xa000000000000000UL + 0x100000000UL - (1UL<<26))
+#define MAX_LINE 160
+/* Stores a sorted list of RAM memory ranges for which to create elf headers.
+ * A separate program header is created for backup region */
+static struct memory_range crash_memory_range[CRASH_MAX_MEMORY_RANGES];
+/* Memory region reserved for storing panic kernel and other data. */
+static struct memory_range crash_reserved_mem;
+unsigned long elfcorehdr;
+static unsigned long kernel_code_start;
+struct loaded_segment {
+ unsigned long start;
+ unsigned long end;
+ unsigned long reserved;
+};
+
+#define MAX_LOAD_SEGMENTS 128
+struct loaded_segment loaded_segments[MAX_LOAD_SEGMENTS];
+
+unsigned long loaded_segments_num, loaded_segments_base;
+static int seg_comp(const void *a, const void *b)
+{
+ const struct loaded_segment *x = a, *y = b;
+ /* avoid overflow */
+ if (x->start > y->start) return 1;
+ if (x->start < y->start) return -1;
+ return 0;
+}
+
+/* purgatory code need this info to patch the EFI memmap
+ */
+static void add_loaded_segments_info(struct kexec_info *info,
+ struct mem_ehdr *ehdr, unsigned long max_addr)
+{
+ int i;
+ for(i = 0; i < ehdr->e_phnum; i++) {
+ unsigned long start, end;
+ struct mem_phdr *phdr;
+ phdr = &ehdr->e_phdr[i];
+ if (phdr->p_type != PT_LOAD)
+ continue;
+ start = phdr->p_paddr;
+ end = phdr->p_paddr + phdr->p_memsz;
+
+ loaded_segments[loaded_segments_num].start =
+ start&~(ELF_PAGE_SIZE-1);
+ loaded_segments[loaded_segments_num].end =
+ (end + ELF_PAGE_SIZE - 1)&~(ELF_PAGE_SIZE - 1);
+ loaded_segments[loaded_segments_num].reserved = 0;
+ loaded_segments_num++;
+ }
+}
+
+static int get_crash_notes_section_addr(unsigned long *addr, int cpu)
+{
+ char crash_notes[128];
+ char line[MAX_LINE];
+ FILE *fp;
+ sprintf(crash_notes, "/sys/devices/system/cpu/cpu%d/crash_notes", cpu);
+ fp = fopen(crash_notes, "r");
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s: %s\n",
+ crash_notes, strerror(errno));
+ fprintf(stderr, "Try mounting sysfs\n");
+ return -1;
+ }
+ if (fscanf(fp, "%lx", addr) != 1) {
+ *addr = 0;
+ return -1;
+ }
+ return 0;
+}
+
+/* Removes crash reserve region from list of memory chunks for whom elf program
+ * headers have to be created. Assuming crash reserve region to be a single
+ * continuous area fully contained inside one of the memory chunks */
+static int exclude_crash_reserve_region(int *nr_ranges)
+{
+ int i, j, tidx = -1;
+ unsigned long cstart, cend;
+ struct memory_range temp_region;
+
+ /* Crash reserved region. */
+ cstart = crash_reserved_mem.start;
+ cend = crash_reserved_mem.end;
+
+ for (i = 0; i < (*nr_ranges); i++) {
+ unsigned long mstart, mend;
+ mstart = crash_memory_range[i].start;
+ mend = crash_memory_range[i].end;
+ if (cstart < mend && cend > mstart) {
+ if (cstart != mstart && cend != mend) {
+ /* Split memory region */
+ crash_memory_range[i].end = cstart - 1;
+ temp_region.start = cend + 1;
+ temp_region.end = mend;
+ temp_region.type = RANGE_RAM;
+ tidx = i+1;
+ } else if (cstart != mstart)
+ crash_memory_range[i].end = cstart - 1;
+ else
+ crash_memory_range[i].start = cend + 1;
+ }
+ }
+ /* Insert split memory region, if any. */
+ if (tidx >= 0) {
+ if (*nr_ranges == CRASH_MAX_MEMORY_RANGES) {
+ /* No space to insert another element. */
+ fprintf(stderr, "Error: Number of crash memory ranges"
+ " excedeed the max limit\n");
+ return -1;
+ }
+ for (j = (*nr_ranges - 1); j >= tidx; j--)
+ crash_memory_range[j+1] = crash_memory_range[j];
+ crash_memory_range[tidx].start = temp_region.start;
+ crash_memory_range[tidx].end = temp_region.end;
+ crash_memory_range[tidx].type = temp_region.type;
+ (*nr_ranges)++;
+ }
+ return 0;
+}
+
+static int prepare_crash_memory_elf64_headers(struct kexec_info *info,
+ void *buf, unsigned long size)
+{
+ Elf64_Ehdr *elf;
+ Elf64_Phdr *phdr;
+ int i;
+ long int nr_cpus = 0;
+ char *bufp = buf;
+ unsigned long notes_addr, notes_offset;
+
+ /* Setup ELF Header*/
+ elf = (Elf64_Ehdr *) bufp;
+ bufp += sizeof(Elf64_Ehdr);
+ memcpy(elf->e_ident, ELFMAG, SELFMAG);
+ elf->e_ident[EI_CLASS] = ELFCLASS64;
+ elf->e_ident[EI_DATA] = ELFDATA2LSB;
+ elf->e_ident[EI_VERSION]= EV_CURRENT;
+ elf->e_ident[EI_OSABI] = ELFOSABI_NONE;
+ memset(elf->e_ident+EI_PAD, 0, EI_NIDENT-EI_PAD);
+ elf->e_type = ET_CORE;
+ elf->e_machine = EM_IA_64;
+ elf->e_version = EV_CURRENT;
+ elf->e_entry = 0;
+ elf->e_phoff = sizeof(Elf64_Ehdr);
+ elf->e_shoff = 0;
+ elf->e_flags = 0;
+ elf->e_ehsize = sizeof(Elf64_Ehdr);
+ elf->e_phentsize= sizeof(Elf64_Phdr);
+ elf->e_phnum = 0;
+ elf->e_shentsize= 0;
+ elf->e_shnum = 0;
+ elf->e_shstrndx = 0;
+
+ /* PT_NOTE program headers. One per cpu*/
+ nr_cpus = sysconf(_SC_NPROCESSORS_CONF);
+ if (nr_cpus < 0) {
+ return -1;
+ }
+
+ /* Need to find a better way to determine per cpu notes section size. */
+#define MAX_NOTE_BYTES 1024
+
+ for (i = 0; i < nr_cpus; i++) {
+ if (get_crash_notes_section_addr (¬es_addr, i) < 0)
+ break;
+ notes_offset = notes_addr;
+ phdr = (Elf64_Phdr *) bufp;
+ bufp += sizeof(Elf64_Phdr);
+ phdr->p_type = PT_NOTE;
+ phdr->p_flags = 0;
+ phdr->p_offset = notes_offset;
+ phdr->p_vaddr = phdr->p_paddr = notes_offset;
+ phdr->p_filesz = phdr->p_memsz = MAX_NOTE_BYTES;
+ /* Do we need any alignment of segments? */
+ phdr->p_align = 0;
+
+ /* Increment number of program headers. */
+ (elf->e_phnum)++;
+ }
+
+ for (i = 0; i < memory_ranges; i++) {
+ unsigned long mstart, mend;
+ mstart = crash_memory_range[i].start;
+ mend = crash_memory_range[i].end;
+ if (!mstart && !mend)
+ break;
+ phdr = (Elf64_Phdr *) bufp;
+ bufp += sizeof(Elf64_Phdr);
+ phdr->p_type = PT_LOAD;
+ phdr->p_flags = PF_R|PF_W|PF_X;
+ phdr->p_offset = mstart;
+ /*add region 5 mapping for kernel*/
+ if (kernel_code_start >= mstart && kernel_code_start < mend) {
+ phdr->p_vaddr = mstart + LOAD_OFFSET;
+ phdr->p_paddr = mstart;
+ phdr->p_filesz = phdr->p_memsz = mend - mstart + 1;
+ phdr->p_align = 0;
+ (elf->e_phnum)++;
+
+ phdr = (Elf64_Phdr *) bufp;
+ bufp += sizeof(Elf64_Phdr);
+ phdr->p_type = PT_LOAD;
+ phdr->p_flags = PF_R|PF_W|PF_X;
+ phdr->p_offset = mstart;
+ }
+ phdr->p_vaddr = mstart + PAGE_OFFSET;
+ phdr->p_paddr = mstart;
+ phdr->p_filesz = phdr->p_memsz = mend - mstart + 1;
+ phdr->p_align = 0;
+ (elf->e_phnum)++;
+ }
+ return 0;
+}
+
+static int get_crash_memory_ranges(struct memory_range **range, int *ranges)
+{
+ const char iomem[]= "/proc/iomem";
+ char line[MAX_LINE];
+ FILE *fp;
+ unsigned long start, end;
+
+ fp = fopen(iomem, "r");
+ if (!fp) {
+ fprintf(stderr, "Cannot open %s: %s\n",
+ iomem, strerror(errno));
+ return -1;
+ }
+ while(fgets(line, sizeof(line), fp) != 0) {
+ char *str;
+ int type, consumed, count;
+ if (memory_ranges >= CRASH_MAX_MEMORY_RANGES)
+ break;
+ count = sscanf(line, "%lx-%lx : %n",
+ &start, &end, &consumed);
+ str = line + consumed;
+ if (count != 2)
+ continue;
+
+ if (memcmp(str, "System RAM\n", 11) == 0) {
+ type = RANGE_RAM;
+ } else if (memcmp(str, "Crash kernel\n", 13) == 0) {
+ /* Reserved memory region. New kernel can
+ * use this region to boot into. */
+ crash_reserved_mem.start = start;
+ crash_reserved_mem.end = end;
+ crash_reserved_mem.type = RANGE_RAM;
+ continue;
+ }
+ else if (memcmp(str, "Kernel code\n", 12) == 0) {
+ kernel_code_start = start;
+ continue;
+ }else
+ continue;
+ crash_memory_range[memory_ranges].start = start;
+ crash_memory_range[memory_ranges].end = end;
+ crash_memory_range[memory_ranges].type = type;
+ memory_ranges++;
+ }
+ fclose(fp);
+ if (exclude_crash_reserve_region(&memory_ranges) < 0)
+ return -1;
+ *ranges = memory_ranges;
+ return 0;
+}
+
+static void
+cmdline_add_elfcorehdr(char **cmdline, unsigned long addr)
+{
+ char *str = *cmdline;
+ char buf[64];
+ size_t len;
+ sprintf(buf, " elfcorehdr=%ldK", addr/1024);
+ len = strlen(str) + strlen(buf) + 1;
+ str = xmalloc(len);
+ sprintf(str, "%s%s", *cmdline, buf);
+ *cmdline = str;
+}
+
+int load_crashdump_segments(struct kexec_info *info, struct mem_ehdr *ehdr,
+ unsigned long max_addr, unsigned long min_base,
+ char **cmdline)
+{
+ //struct memory_range *mem_range, *memmap_p;
+ struct memory_range *mem_range;
+ int nr_ranges;
+ size_t size;
+ void *tmp;
+ if (info->kexec_flags & KEXEC_ON_CRASH ) {
+ if (get_crash_memory_ranges(&mem_range, &nr_ranges) == 0) {
+ size = sizeof(Elf64_Ehdr) +
+ (nr_ranges + 1) * sizeof(Elf64_Phdr);
+ size = (size + EFI_PAGE_SIZE - 1) & ~(EFI_PAGE_SIZE - 1);
+ tmp = xmalloc(size);
+ memset(tmp, 0, size);
+ if (prepare_crash_memory_elf64_headers(info, tmp, size) < 0)
+ return -1;
+ elfcorehdr = add_buffer(info, tmp, size, size, EFI_PAGE_SIZE, min_base,
+ max_addr, -1);
+ loaded_segments[loaded_segments_num].start = elfcorehdr;
+ loaded_segments[loaded_segments_num].end = elfcorehdr + size;
+ loaded_segments[loaded_segments_num].reserved = 1;
+ loaded_segments_num++;
+ cmdline_add_elfcorehdr(cmdline, elfcorehdr);
+ }
+ }
+ add_loaded_segments_info(info, ehdr, max_addr);
+ size = sizeof(struct loaded_segment) * loaded_segments_num;
+ qsort(loaded_segments, loaded_segments_num,
+ sizeof(struct loaded_segment), seg_comp);
+ loaded_segments_base = add_buffer(info, loaded_segments,
+ size, size, 16, 0, max_addr, -1);
+
+ elf_rel_set_symbol(&info->rhdr, "__loaded_segments",
+ &loaded_segments_base, sizeof(long));
+ elf_rel_set_symbol(&info->rhdr, "__loaded_segments_num",
+ &loaded_segments_num, sizeof(long));
+ return 0;
+}
+
+
diff -puN /dev/null kexec/arch/ia64/crashdump-ia64.h
--- /dev/null 2006-07-13 05:14:41.629277080 +0530
+++ kexec-tools-1.101-kdump-maneesh/kexec/arch/ia64/crashdump-ia64.h 2006-07-13 14:42:05.000000000 +0530
@@ -0,0 +1,13 @@
+#ifndef CRASHDUMP_IA64_H
+#define CRASHDUMP_IA64_H
+
+#define PAGE_OFFSET 0xe000000000000000UL
+#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
+extern int load_crashdump_segments(struct kexec_info *info,
+ struct mem_ehdr *ehdr, unsigned long max_addr,
+ unsigned long min_base, char **cmdline);
+
+#define CRASH_MAX_MEMMAP_NR (KEXEC_MAX_SEGMENTS + 1)
+#define CRASH_MAX_MEMORY_RANGES (MAX_MEMORY_RANGES + 2)
+
+#endif
diff -puN kexec/arch/ia64/kexec-elf-ia64.c~kdump-ia64 kexec/arch/ia64/kexec-elf-ia64.c
--- kexec-tools-1.101-kdump/kexec/arch/ia64/kexec-elf-ia64.c~kdump-ia64 2006-07-13 14:42:05.000000000 +0530
+++ kexec-tools-1.101-kdump-maneesh/kexec/arch/ia64/kexec-elf-ia64.c 2006-07-13 14:42:05.000000000 +0530
@@ -40,7 +40,9 @@
#include <boot/elf_boot.h>
#include <ip_checksum.h>
#include "../../kexec.h"
+#include "../../kexec-syscall.h"
#include "../../kexec-elf.h"
+#include "crashdump-ia64.h"
#include <arch/options.h>
static const int probe_debug = 0;
@@ -80,6 +82,28 @@ void elf_ia64_usage(void)
" --initrd=FILE Use FILE as the kernel's initial ramdisk.\n");
}
+/* Move the crash kerenl physical offset to reserved region
+ */
+static void move_loaded_segments(struct kexec_info *info, struct mem_ehdr *ehdr)
+{
+ int i;
+ long offset;
+ struct mem_phdr *phdr;
+ for(i = 0; i < ehdr->e_phnum; i++) {
+ phdr = &ehdr->e_phdr[i];
+ if (phdr->p_type == PT_LOAD) {
+ offset = mem_min - phdr->p_paddr;
+ break;
+ }
+ }
+ ehdr->e_entry += offset;
+ for(i = 0; i < ehdr->e_phnum; i++) {
+ phdr = &ehdr->e_phdr[i];
+ if (phdr->p_type == PT_LOAD)
+ phdr->p_paddr += offset;
+ }
+}
+
int elf_ia64_load(int argc, char **argv, const char *buf, off_t len,
struct kexec_info *info)
{
@@ -89,9 +113,11 @@ int elf_ia64_load(int argc, char **argv,
off_t ramdisk_size = 0;
unsigned long command_line_len;
unsigned long entry, max_addr, gp_value;
- unsigned command_line_base, ramdisk_base;
+ unsigned long command_line_base, ramdisk_base;
+ unsigned long efi_memmap_base, efi_memmap_size;
int result;
int opt;
+ char *efi_memmap_buf;
#define OPT_APPEND (OPT_ARCH_MAX+0)
#define OPT_RAMDISK (OPT_ARCH_MAX+1)
static const struct option options[] = {
@@ -135,6 +161,15 @@ int elf_ia64_load(int argc, char **argv,
free_elf_info(&ehdr);
return result;
}
+
+ if (info->kexec_flags & KEXEC_ON_CRASH ) {
+ if ((mem_min == 0x00) && (mem_max = ULONG_MAX)) {
+ fprintf(stderr, "Failed to find crash kernel region in /proc/iomem\n");
+ return -1;
+ }
+ move_loaded_segments(info, &ehdr);
+ }
+
entry = ehdr.e_entry;
max_addr = elf_max_addr(&ehdr);
@@ -149,17 +184,48 @@ int elf_ia64_load(int argc, char **argv,
/* Load the setup code */
elf_rel_build_load(info, &info->rhdr, purgatory, purgatory_size,
- 0x80000, ULONG_MAX, 1);
+ 0x0, ULONG_MAX, -1);
- if (command_line_len) {
+
+ if (load_crashdump_segments(info, &ehdr, max_addr, 0,
+ &command_line) < 0)
+ return -1;
+
+ // reserve 8k for efi_memmap
+ efi_memmap_size = 1UL<<14;
+ efi_memmap_buf = xmalloc(efi_memmap_size);
+ efi_memmap_base = add_buffer(info, efi_memmap_buf,
+ efi_memmap_size, efi_memmap_size, 4096, 0,
+ max_addr, -1);
+
+ elf_rel_set_symbol(&info->rhdr, "__efi_memmap_base",
+ &efi_memmap_base, sizeof(long));
+
+ elf_rel_set_symbol(&info->rhdr, "__efi_memmap_size",
+ &efi_memmap_size, sizeof(long));
+ if (command_line) {
+ command_line_len = strlen(command_line) + 1;
+ }
+ if (command_line_len || (info->kexec_flags & KEXEC_ON_CRASH )) {
char *cmdline = xmalloc(command_line_len);
strcpy(cmdline, command_line);
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ char buf[128];
+ sprintf(buf," max_addr=%lluM min_addr=%lluM",
+ mem_max>>20, mem_min>>20);
+ command_line_len = strlen(cmdline) + strlen(buf) + 1;
+ cmdline = xrealloc(cmdline, command_line_len);
+ strcat(cmdline, buf);
+ }
+
command_line_len = (command_line_len + 15)&(~15);
+ command_line_base = add_buffer(info, cmdline,
+ command_line_len, command_line_len,
+ getpagesize(), 0UL,
+ max_addr, -1);
elf_rel_set_symbol(&info->rhdr, "__command_line_len",
&command_line_len, sizeof(long));
- command_line_base = add_buffer(info, cmdline,
- command_line_len, command_line_len,
- 16, 0, max_addr, 1);
elf_rel_set_symbol(&info->rhdr, "__command_line",
&command_line_base, sizeof(long));
}
@@ -168,7 +234,7 @@ int elf_ia64_load(int argc, char **argv,
ramdisk_buf = slurp_file(ramdisk, &ramdisk_size);
ramdisk_base = add_buffer(info, ramdisk_buf, ramdisk_size,
ramdisk_size,
- getpagesize(), 0, max_addr, 1);
+ getpagesize(), 0, max_addr, -1);
elf_rel_set_symbol(&info->rhdr, "__ramdisk_base",
&ramdisk_base, sizeof(long));
elf_rel_set_symbol(&info->rhdr, "__ramdisk_size",
diff -puN kexec/arch/ia64/kexec-elf-rel-ia64.c~kdump-ia64 kexec/arch/ia64/kexec-elf-rel-ia64.c
--- kexec-tools-1.101-kdump/kexec/arch/ia64/kexec-elf-rel-ia64.c~kdump-ia64 2006-07-13 14:42:05.000000000 +0530
+++ kexec-tools-1.101-kdump-maneesh/kexec/arch/ia64/kexec-elf-rel-ia64.c 2006-07-13 14:42:05.000000000 +0530
@@ -1,3 +1,26 @@
+/*
+ * Copyright (C) 2005-2006 Zou Nan hai (nanhai.zou@intel.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* pugatory relocation code
+ * Most of the code in this file is
+ * based on arch/ia64/kernel/module.c in Linux kernel
+ */
+
+
/* Most of the code in this file is
* based on arch/ia64/kernel/module.c in Linux kernel
*/
@@ -43,6 +66,15 @@ ia64_patch (uint64_t insn_addr, uint64_t
b[1] = (b1 & ~m1) | (v1 & m1);
}
+static void
+put_unaligned64(unsigned long val, unsigned char *location)
+{
+ unsigned char *src = (unsigned char *)&val;
+ int i;
+ for (i = 0; i < sizeof(long); i++)
+ *location++ = *src++;
+}
+
static inline uint64_t
bundle (const uint64_t insn)
{
@@ -102,6 +134,11 @@ void machine_apply_elf_rel(struct mem_eh
| ((value & 0x0fffffUL) << 13) /* bit 0 -> 13 */));
}
break;
+ case R_IA64_PCREL64LSB: {
+ value = value - address;
+ put_unaligned64(value, location);
+ } break;
+ case R_IA64_GPREL22:
case R_IA64_LTOFF22X:
if (value - gp_value + MAX_LTOFF/2 >= MAX_LTOFF)
die("value out of gp relative range");
diff -puN kexec/arch/ia64/kexec-ia64.h~kdump-ia64 kexec/arch/ia64/kexec-ia64.h
--- kexec-tools-1.101-kdump/kexec/arch/ia64/kexec-ia64.h~kdump-ia64 2006-07-13 14:42:05.000000000 +0530
+++ kexec-tools-1.101-kdump-maneesh/kexec/arch/ia64/kexec-ia64.h 2006-07-13 14:42:05.000000000 +0530
@@ -7,5 +7,7 @@ int elf_ia64_probe(const char *buf, off_
int elf_ia64_load(int argc, char **argv, const char *buf, off_t len,
struct kexec_info *info);
void elf_ia64_usage(void);
-
+#define MAX_MEMORY_RANGES 1024
+#define EFI_PAGE_SIZE (1UL<<12)
+#define ELF_PAGE_SIZE (1UL<<16)
#endif /* KEXEC_IA64_H */
diff -puN kexec/arch/ia64/Makefile~kdump-ia64 kexec/arch/ia64/Makefile
--- kexec-tools-1.101-kdump/kexec/arch/ia64/Makefile~kdump-ia64 2006-07-13 14:42:05.000000000 +0530
+++ kexec-tools-1.101-kdump-maneesh/kexec/arch/ia64/Makefile 2006-07-13 14:42:05.000000000 +0530
@@ -4,3 +4,5 @@
KEXEC_C_SRCS+= kexec/arch/ia64/kexec-ia64.c
KEXEC_C_SRCS+= kexec/arch/ia64/kexec-elf-ia64.c
KEXEC_C_SRCS+= kexec/arch/ia64/kexec-elf-rel-ia64.c
+KEXEC_C_SRCS+= kexec/arch/ia64/crashdump-ia64.c
+
diff -puN kexec/kexec.c~kdump-ia64 kexec/kexec.c
--- kexec-tools-1.101-kdump/kexec/kexec.c~kdump-ia64 2006-07-13 14:42:05.000000000 +0530
+++ kexec-tools-1.101-kdump-maneesh/kexec/kexec.c 2006-07-13 14:42:05.000000000 +0530
@@ -96,6 +96,9 @@ int valid_memory_range(unsigned long sst
continue;
mstart = memory_range[i].start;
mend = memory_range[i].end;
+ if (i < memory_ranges - 1 && mend == memory_range[i+1].start)
+ mend = memory_range[i+1].end;
+
/* Check to see if we are fully contained */
if ((mstart <= sstart) && (mend >= send)) {
return 1;
diff -puN kexec/kexec-sha256.h~kdump-ia64 kexec/kexec-sha256.h
--- kexec-tools-1.101-kdump/kexec/kexec-sha256.h~kdump-ia64 2006-07-13 14:42:05.000000000 +0530
+++ kexec-tools-1.101-kdump-maneesh/kexec/kexec-sha256.h 2006-07-13 14:42:05.000000000 +0530
@@ -6,6 +6,6 @@ struct sha256_region {
unsigned long len;
};
-#define SHA256_REGIONS 8
+#define SHA256_REGIONS 16
#endif /* KEXEC_SHA256_H */
diff -puN purgatory/arch/ia64/console-ia64.c~kdump-ia64 purgatory/arch/ia64/console-ia64.c
--- kexec-tools-1.101-kdump/purgatory/arch/ia64/console-ia64.c~kdump-ia64 2006-07-13 14:42:05.000000000 +0530
+++ kexec-tools-1.101-kdump-maneesh/purgatory/arch/ia64/console-ia64.c 2006-07-13 14:42:05.000000000 +0530
@@ -1,5 +1,47 @@
#include <purgatory.h>
+#include "io.h"
+
+#define VGABASE UNCACHED(0xb8000)
+
+/* code based on i386 console code
+ * TODO add serial support
+ */
+#define MAX_YPOS 25
+#define MAX_XPOS 80
+
+unsigned long current_ypos = 1, current_xpos = 0;
+
+static void putchar_vga(int ch)
+{
+ int i, k, j;
+
+ if (current_ypos >= MAX_YPOS) {
+ /* scroll 1 line up */
+ for (k = 1, j = 0; k < MAX_YPOS; k++, j++) {
+ for (i = 0; i < MAX_XPOS; i++) {
+ writew(readw(VGABASE + 2*(MAX_XPOS*k + i)),
+ VGABASE + 2*(MAX_XPOS*j + i));
+ }
+ }
+ for (i = 0; i < MAX_XPOS; i++)
+ writew(0x720, VGABASE + 2*(MAX_XPOS*j + i));
+ current_ypos = MAX_YPOS-1;
+ }
+ if (ch == '\n') {
+ current_xpos = 0;
+ current_ypos++;
+ } else if (ch != '\r') {
+ writew(((0x7 << 8) | (unsigned short) ch),
+ VGABASE + 2*(MAX_XPOS*current_ypos +
+ current_xpos++));
+ if (current_xpos >= MAX_XPOS) {
+ current_xpos = 0;
+ current_ypos++;
+ }
+ }
+}
+
void putchar(int ch)
{
- /* Nothing for now */
+ putchar_vga(ch);
}
diff -puN purgatory/arch/ia64/entry.S~kdump-ia64 purgatory/arch/ia64/entry.S
--- kexec-tools-1.101-kdump/purgatory/arch/ia64/entry.S~kdump-ia64 2006-07-13 14:42:05.000000000 +0530
+++ kexec-tools-1.101-kdump-maneesh/purgatory/arch/ia64/entry.S 2006-07-13 14:42:05.000000000 +0530
@@ -1,7 +1,7 @@
/*
* purgatory: setup code
*
- * Copyright (C) 2005 Zou Nan hai (nanhai.zou@intel.com)
+ * Copyright (C) 2005-2006 Zou Nan hai (nanhai.zou@intel.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -16,6 +16,10 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#define DECLARE_DATA8(name) \
+.global name; \
+.size name, 8; \
+name: data8 0x0
.global __dummy_efi_function
.align 32
@@ -35,18 +39,10 @@ purgatory_start:
ld8 gp=[r2];;
br.call.sptk.many b0=purgatory
;;
- alloc r2 = ar.pfs, 0, 0, 5, 0
+ alloc r2 = ar.pfs, 0, 0, 2, 0
;;
mov out0=r28
-
- movl r2=__command_line;;
- ld8 out1=[r2];;
- movl r2=__command_line_len;;
- ld8 out2=[r2];;
- movl r2=__ramdisk_base;;
- ld8 out3=[r2];;
- movl r2=__ramdisk_size;;
- ld8 out4=[r2];;
+ movl out1=__ramdisk_base;;
br.call.sptk.many b0=ia64_env_setup
movl r10=__kernel_entry;;
ld8 r14=[r10];;
@@ -58,28 +54,14 @@ purgatory_start:
br.call.sptk.many b0=b6
.endp purgatory_start
-.align 32
-.global __kernel_entry
-.size __kernel_entry, 8
-__kernel_entry:
- data8 0x0
-.global __command_line
-.size __command_line, 8
-__command_line:
- data8 0x0
-.global __command_line_len
-.size __command_line_len, 8
-__command_line_len:
- data8 0x0
-.global __ramdisk_base
-.size __ramdisk_base, 8
-__ramdisk_base:
- data8 0x0
-.global __ramdisk_size
-.size __ramdisk_size, 8
-__ramdisk_size:
- data8 0x0
-.global __gp_value
-.size __gp_value, 8
-__gp_value:
- data8 0x0
+DECLARE_DATA8(__kernel_entry)
+DECLARE_DATA8(__ramdisk_base)
+DECLARE_DATA8(__ramdisk_size)
+DECLARE_DATA8(__command_line)
+DECLARE_DATA8(__command_line_len)
+DECLARE_DATA8(__efi_memmap_base)
+DECLARE_DATA8(__efi_memmap_size)
+DECLARE_DATA8(__loaded_segments)
+DECLARE_DATA8(__loaded_segments_num)
+
+DECLARE_DATA8(__gp_value)
diff -puN /dev/null purgatory/arch/ia64/io.h
--- /dev/null 2006-07-13 05:14:41.629277080 +0530
+++ kexec-tools-1.101-kdump-maneesh/purgatory/arch/ia64/io.h 2006-07-13 14:42:05.000000000 +0530
@@ -0,0 +1,94 @@
+#ifndef IO_H
+#define IO_H
+#define UNCACHED(x) (void *)((x)|(1UL<<63))
+#define MF() asm volatile ("mf.a" ::: "memory")
+#define IO_SPACE_ENCODING(p) ((((p) >> 2) << 12) | (p & 0xfff))
+
+static inline void *io_addr (unsigned long port)
+{
+ unsigned long offset;
+ unsigned long io_base;
+ asm volatile ("mov %0=ar.k0":"=r"(io_base));
+ offset = IO_SPACE_ENCODING(port);
+ return UNCACHED(io_base | offset);
+}
+
+static inline unsigned int inb (unsigned long port)
+{
+ volatile unsigned char *addr = io_addr(port);
+ unsigned char ret;
+ ret = *addr;
+ MF();
+ return ret;
+}
+
+static inline unsigned int inw (unsigned long port)
+{
+ volatile unsigned short *addr = io_addr(port);
+ unsigned short ret;
+
+ ret = *addr;
+ MF();
+ return ret;
+}
+
+static inline unsigned int ia64_inl (unsigned long port)
+{
+ volatile unsigned int *addr = __ia64_mk_io_addr(port);
+ unsigned int ret;
+ ret = *addr;
+ MF();
+ return ret;
+}
+
+static inline void outb (unsigned char val, unsigned long port)
+{
+ volatile unsigned char *addr = io_addr(port);
+
+ *addr = val;
+ MF();
+}
+
+static inline void outw (unsigned short val, unsigned long port)
+{
+ volatile unsigned short *addr = io_addr(port);
+
+ *addr = val;
+ MF();
+}
+
+static inline void outl (unsigned int val, unsigned long port)
+{
+ volatile unsigned int *addr = io_addr(port);
+
+ *addr = val;
+ MF();
+}
+
+
+static inline unsigned char readb(const volatile void *addr)
+{
+ return *(volatile unsigned char *) addr;
+}
+static inline unsigned short readw(const volatile void *addr)
+{
+ return *(volatile unsigned short *) addr;
+}
+static inline unsigned int readl(const volatile void *addr)
+{
+ return *(volatile unsigned int *) addr;
+}
+
+static inline void writeb(unsigned char b, volatile void *addr)
+{
+ *(volatile unsigned char *) addr = b;
+}
+static inline void writew(unsigned short b, volatile void *addr)
+{
+ *(volatile unsigned short *) addr = b;
+}
+static inline void writel(unsigned int b, volatile void *addr)
+{
+ *(volatile unsigned int *) addr = b;
+}
+#endif
diff -puN purgatory/arch/ia64/Makefile~kdump-ia64 purgatory/arch/ia64/Makefile
--- kexec-tools-1.101-kdump/purgatory/arch/ia64/Makefile~kdump-ia64 2006-07-13 14:42:05.000000000 +0530
+++ kexec-tools-1.101-kdump-maneesh/purgatory/arch/ia64/Makefile 2006-07-13 14:42:05.000000000 +0530
@@ -5,5 +5,5 @@ PCFLAGS += -ffixed-r28
PURGATORY_S_SRCS+= purgatory/arch/ia64/entry.S
PURGATORY_C_SRCS+= purgatory/arch/ia64/purgatory-ia64.c
PURGATORY_C_SRCS+= purgatory/arch/ia64/console-ia64.c
-PURGATORY_C_SRCS+=
+PURGATORY_C_SRCS+= purgatory/arch/ia64/vga.c
diff -puN purgatory/arch/ia64/purgatory-ia64.c~kdump-ia64 purgatory/arch/ia64/purgatory-ia64.c
--- kexec-tools-1.101-kdump/purgatory/arch/ia64/purgatory-ia64.c~kdump-ia64 2006-07-13 14:42:05.000000000 +0530
+++ kexec-tools-1.101-kdump-maneesh/purgatory/arch/ia64/purgatory-ia64.c 2006-07-13 14:42:05.000000000 +0530
@@ -1,9 +1,47 @@
+/*
+ * purgatory: setup code
+ *
+ * Copyright (C) 2005-2006 Zou Nan hai (nanhai.zou@intel.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation (version 2 of the License).
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
#include <purgatory.h>
#include <stdint.h>
#include <string.h>
#include "purgatory-ia64.h"
-#define PAGE_OFFSET 0xe000000000000000
+#define PAGE_OFFSET 0xe000000000000000UL
+
+#define EFI_PAGE_SHIFT 12
+#define EFI_PAGE_SIZE (1UL<<EFI_PAGE_SHIFT)
+#define EFI_PAGE_ALIGN(x) ((x + EFI_PAGE_SIZE - 1)&~(EFI_PAGE_SIZE-1))
+/* Memory types: */
+#define EFI_RESERVED_TYPE 0
+#define EFI_LOADER_CODE 1
+#define EFI_LOADER_DATA 2
+#define EFI_BOOT_SERVICES_CODE 3
+#define EFI_BOOT_SERVICES_DATA 4
+#define EFI_RUNTIME_SERVICES_CODE 5
+#define EFI_RUNTIME_SERVICES_DATA 6
+#define EFI_CONVENTIONAL_MEMORY 7
+#define EFI_UNUSABLE_MEMORY 8
+#define EFI_ACPI_RECLAIM_MEMORY 9
+#define EFI_ACPI_MEMORY_NVS 10
+#define EFI_MEMORY_MAPPED_IO 11
+#define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12
+#define EFI_PAL_CODE 13
+#define EFI_MAX_MEMORY_TYPE 14
typedef struct {
uint64_t signature;
@@ -63,53 +101,171 @@ struct ia64_boot_param {
uint64_t initrd_size;
};
-void setup_arch(void)
+typedef struct {
+ uint32_t type;
+ uint32_t pad;
+ uint64_t phys_addr;
+ uint64_t virt_addr;
+ uint64_t num_pages;
+ uint64_t attribute;
+} efi_memory_desc_t;
+
+struct loaded_segment {
+ unsigned long start;
+ unsigned long end;
+ unsigned long reserved;
+};
+
+struct kexec_boot_params {
+ uint64_t ramdisk_base;
+ uint64_t ramdisk_size;
+ uint64_t command_line;
+ uint64_t command_line_len;
+ uint64_t efi_memmap_base;
+ uint64_t efi_memmap_size;
+ struct loaded_segment *loaded_segments;
+ unsigned long loaded_segments_num;
+};
+
+void
+setup_arch(void)
{
- /* Nothing for now */
+ reset_vga();
}
+
inline unsigned long PA(unsigned long addr)
{
return addr - PAGE_OFFSET;
}
-void flush_icache_range(char *start, unsigned long len)
+void
+patch_efi_memmap(struct kexec_boot_params *params,
+ struct ia64_boot_param *boot_param)
+{
+ void *dest = (void *)params->efi_memmap_base;
+ void *src = (void *)boot_param->efi_memmap;
+ unsigned long len = boot_param->efi_memmap_size;
+ unsigned long memdesc_size = boot_param->efi_memdesc_size;
+ uint64_t orig_type;
+ efi_memory_desc_t *md1, *md2;
+ void *p1, *p2, *src_end = src + len;
+ int i;
+ for (p1 = src, p2 = dest; p1 < src_end;
+ p1 += memdesc_size, p2 += memdesc_size) {
+ unsigned long mstart, mend;
+ md1 = p1;
+ md2 = p2;
+ if (md1->num_pages == 0)
+ continue;
+ mstart = md1->phys_addr;
+ mend = md1->phys_addr + (md1->num_pages
+ << EFI_PAGE_SHIFT);
+ switch (md1->type) {
+ case EFI_LOADER_DATA:
+ *md2 = *md1;
+ md2->type = EFI_CONVENTIONAL_MEMORY;
+ break;
+ default:
+ *md2 = *md1;
+ }
+ // segments are already sorted and aligned to 4K
+ orig_type = md2->type;
+ for (i = 0; i < params->loaded_segments_num; i++) {
+ struct loaded_segment *seg;
+ seg = ¶ms->loaded_segments[i];
+ if (seg->start >= mstart && seg->start < mend) {
+ unsigned long start_pages, mid_pages, end_pages;
+ if (seg->end > mend) {
+ p1 += memdesc_size;
+ for(; p1 < src_end;
+ p1 += memdesc_size) {
+ md1 = p1;
+ /* TODO check contig and attribute here */
+ mend = md1->phys_addr
+ + (md1->num_pages << EFI_PAGE_SHIFT);
+ if (seg->end < mend)
+ break;
+ }
+ }
+ start_pages = (seg->start - mstart)
+ >> EFI_PAGE_SHIFT;
+ mid_pages = (seg->end - seg->start)
+ >> EFI_PAGE_SHIFT;
+ end_pages = (mend - seg->end)
+ >> EFI_PAGE_SHIFT;
+ if (start_pages) {
+ md2->num_pages = start_pages;
+ p2 += memdesc_size;
+ md2 = p2;
+ *md2 = *md1;
+ }
+ md2->phys_addr = seg->start;
+ md2->num_pages = mid_pages;
+ md2->type = seg->reserved ?
+ EFI_UNUSABLE_MEMORY:EFI_LOADER_DATA;
+ if (end_pages) {
+ p2 += memdesc_size;
+ md2 = p2;
+ *md2 = *md1;
+ md2->phys_addr = seg->end;
+ md2->num_pages = end_pages;
+ md2->type = orig_type;
+ mstart = seg->end;
+ } else
+ break;
+ }
+ }
+ }
+
+ boot_param->efi_memmap_size = p2 - dest;
+}
+
+void
+flush_icache_range(char *start, unsigned long len)
{
unsigned long i;
for (i = 0;i < len; i += 32)
- asm volatile("fc.i %0"::"r"(start+i):"memory");
+ asm volatile("fc.i %0"::"r"(start + i):"memory");
asm volatile (";;sync.i;;":::"memory");
asm volatile ("srlz.i":::"memory");
}
extern char __dummy_efi_function[], __dummy_efi_function_end[];
-void ia64_env_setup(struct ia64_boot_param *boot_param,
- uint64_t command_line, uint64_t command_line_len,
- uint64_t ramdisk_base, uint64_t ramdisk_size)
+
+void
+ia64_env_setup(struct ia64_boot_param *boot_param,
+ struct kexec_boot_params *params)
{
unsigned long len;
efi_system_table_t *systab;
efi_runtime_services_t *runtime;
unsigned long *set_virtual_address_map;
+ char *command_line = (char *)params->command_line;
+ uint64_t command_line_len = params->command_line_len;
// patch efi_runtime->set_virtual_address_map to a
// dummy function
len = __dummy_efi_function_end - __dummy_efi_function;
- memcpy((char *)command_line + command_line_len, __dummy_efi_function,
- len);
+ memcpy(command_line + command_line_len,
+ __dummy_efi_function, len);
systab = (efi_system_table_t *)boot_param->efi_systab;
runtime = (efi_runtime_services_t *)PA(systab->runtime);
set_virtual_address_map =
(unsigned long *)PA(runtime->set_virtual_address_map);
- *(set_virtual_address_map)=
- (unsigned long)((char *)command_line + command_line_len);
- flush_icache_range((char *)command_line+command_line_len, len);
+ *(set_virtual_address_map) =
+ (unsigned long)(command_line + command_line_len);
+ flush_icache_range(command_line + command_line_len, len);
+
+ patch_efi_memmap(params, boot_param);
+
+ boot_param->efi_memmap = params->efi_memmap_base;
- boot_param->command_line = command_line;
+ boot_param->command_line = params->command_line;
boot_param->console_info.orig_x = 0;
boot_param->console_info.orig_y = 0;
- boot_param->initrd_start = ramdisk_base;
- boot_param->initrd_size = ramdisk_size;
+ boot_param->initrd_start = params->ramdisk_base;
+ boot_param->initrd_size = params->ramdisk_size;
}
/* This function can be used to execute after the SHA256 verification. */
diff -puN purgatory/arch/ia64/purgatory-ia64.h~kdump-ia64 purgatory/arch/ia64/purgatory-ia64.h
--- kexec-tools-1.101-kdump/purgatory/arch/ia64/purgatory-ia64.h~kdump-ia64 2006-07-13 14:42:05.000000000 +0530
+++ kexec-tools-1.101-kdump-maneesh/purgatory/arch/ia64/purgatory-ia64.h 2006-07-13 14:42:05.000000000 +0530
@@ -1,6 +1,5 @@
#ifndef PURGATORY_IA64_H
#define PURGATORY_IA64_H
-/* nothing yet */
-
+void reset_vga(void);
#endif /* PURGATORY_IA64_H */
diff -puN /dev/null purgatory/arch/ia64/vga.c
--- /dev/null 2006-07-13 05:14:41.629277080 +0530
+++ kexec-tools-1.101-kdump-maneesh/purgatory/arch/ia64/vga.c 2006-07-13 14:42:05.000000000 +0530
@@ -0,0 +1,143 @@
+#include "io.h"
+void reset_vga(void)
+{
+ /* Hello */
+ inb(0x3da);
+ outb(0, 0x3c0);
+
+ /* Sequencer registers */
+ outw(0x0300, 0x3c4);
+ outw(0x0001, 0x3c4);
+ outw(0x0302, 0x3c4);
+ outw(0x0003, 0x3c4);
+ outw(0x0204, 0x3c4);
+
+ /* Ensure CRTC regs 0-7 are unlocked by clearing bit 7 of CRTC[17] */
+ outw(0x0e11, 0x3d4);
+ /* CRTC registers */
+ outw(0x5f00, 0x3d4);
+ outw(0x4f01, 0x3d4);
+ outw(0x5002, 0x3d4);
+ outw(0x8203, 0x3d4);
+ outw(0x5504, 0x3d4);
+ outw(0x8105, 0x3d4);
+ outw(0xbf06, 0x3d4);
+ outw(0x1f07, 0x3d4);
+ outw(0x0008, 0x3d4);
+ outw(0x4f09, 0x3d4);
+ outw(0x200a, 0x3d4);
+ outw(0x0e0b, 0x3d4);
+ outw(0x000c, 0x3d4);
+ outw(0x000d, 0x3d4);
+ outw(0x010e, 0x3d4);
+ outw(0xe00f, 0x3d4);
+ outw(0x9c10, 0x3d4);
+ outw(0x8e11, 0x3d4);
+ outw(0x8f12, 0x3d4);
+ outw(0x2813, 0x3d4);
+ outw(0x1f14, 0x3d4);
+ outw(0x9615, 0x3d4);
+ outw(0xb916, 0x3d4);
+ outw(0xa317, 0x3d4);
+ outw(0xff18, 0x3d4);
+
+ /* Graphic registers */
+ outw(0x0000, 0x3ce);
+ outw(0x0001, 0x3ce);
+ outw(0x0002, 0x3ce);
+ outw(0x0003, 0x3ce);
+ outw(0x0004, 0x3ce);
+ outw(0x1005, 0x3ce);
+ outw(0x0e06, 0x3ce);
+ outw(0x0007, 0x3ce);
+ outw(0xff08, 0x3ce);
+
+ /* Attribute registers */
+ inb(0x3da);
+ outb(0x00, 0x3c0);
+ outb(0x00, 0x3c0);
+
+ inb(0x3da);
+ outb(0x01, 0x3c0);
+ outb(0x01, 0x3c0);
+
+ inb(0x3da);
+ outb(0x02, 0x3c0);
+ outb(0x02, 0x3c0);
+
+ inb(0x3da);
+ outb(0x03, 0x3c0);
+ outb(0x03, 0x3c0);
+
+ inb(0x3da);
+ outb(0x04, 0x3c0);
+ outb(0x04, 0x3c0);
+
+ inb(0x3da);
+ outb(0x05, 0x3c0);
+ outb(0x05, 0x3c0);
+
+ inb(0x3da);
+ outb(0x06, 0x3c0);
+ outb(0x14, 0x3c0);
+
+ inb(0x3da);
+ outb(0x07, 0x3c0);
+ outb(0x07, 0x3c0);
+
+ inb(0x3da);
+ outb(0x08, 0x3c0);
+ outb(0x38, 0x3c0);
+
+ inb(0x3da);
+ outb(0x09, 0x3c0);
+ outb(0x39, 0x3c0);
+
+ inb(0x3da);
+ outb(0x0a, 0x3c0);
+ outb(0x3a, 0x3c0);
+
+ inb(0x3da);
+ outb(0x0b, 0x3c0);
+ outb(0x3b, 0x3c0);
+
+ inb(0x3da);
+ outb(0x0c, 0x3c0);
+ outb(0x3c, 0x3c0);
+
+ inb(0x3da);
+ outb(0x0d, 0x3c0);
+ outb(0x3d, 0x3c0);
+
+ inb(0x3da);
+ outb(0x0e, 0x3c0);
+ outb(0x3e, 0x3c0);
+
+ inb(0x3da);
+ outb(0x0f, 0x3c0);
+ outb(0x3f, 0x3c0);
+
+ inb(0x3da);
+ outb(0x10, 0x3c0);
+ outb(0x0c, 0x3c0);
+
+ inb(0x3da);
+ outb(0x11, 0x3c0);
+ outb(0x00, 0x3c0);
+
+ inb(0x3da);
+ outb(0x12, 0x3c0);
+ outb(0x0f, 0x3c0);
+
+ inb(0x3da);
+ outb(0x13, 0x3c0);
+ outb(0x08, 0x3c0);
+
+ inb(0x3da);
+ outb(0x14, 0x3c0);
+ outb(0x00, 0x3c0);
+
+ /* Goodbye */
+ inb(0x3da);
+ outb(0x20, 0x3c0);
+}
_