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-rw-r--r--arch/ia64/kernel/setup.c63
1 files changed, 61 insertions, 2 deletions
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index d10404a4175..ad567b8d432 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -43,6 +43,8 @@
#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>
@@ -252,6 +254,47 @@ reserve_memory (void)
efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end);
n++;
+#ifdef CONFIG_KEXEC
+ /* crashkernel=size@offset specifies the size to reserve for a crash
+ * kernel. If offset is 0, then it is determined automatically.
+ * By reserving this memory we guarantee that linux never set's it
+ * up as a DMA target.Useful for holding code to do something
+ * appropriate after a kernel panic.
+ */
+ {
+ char *from = strstr(saved_command_line, "crashkernel=");
+ unsigned long base, size;
+ if (from) {
+ size = memparse(from + 12, &from);
+ if (*from == '@')
+ base = memparse(from+1, &from);
+ else
+ base = 0;
+ if (size) {
+ if (!base) {
+ sort_regions(rsvd_region, n);
+ base = kdump_find_rsvd_region(size,
+ rsvd_region, n);
+ }
+ if (base != ~0UL) {
+ rsvd_region[n].start =
+ (unsigned long)__va(base);
+ rsvd_region[n].end =
+ (unsigned long)__va(base + size);
+ n++;
+ crashk_res.start = base;
+ crashk_res.end = base + size - 1;
+ }
+ }
+ }
+ efi_memmap_res.start = ia64_boot_param->efi_memmap;
+ efi_memmap_res.end = efi_memmap_res.start +
+ ia64_boot_param->efi_memmap_size;
+ boot_param_res.start = __pa(ia64_boot_param);
+ boot_param_res.end = boot_param_res.start +
+ sizeof(*ia64_boot_param);
+ }
+#endif
/* end of memory marker */
rsvd_region[n].start = ~0UL;
rsvd_region[n].end = ~0UL;
@@ -263,6 +306,7 @@ reserve_memory (void)
sort_regions(rsvd_region, num_rsvd_regions);
}
+
/**
* find_initrd - get initrd parameters from the boot parameter structure
*
@@ -396,6 +440,21 @@ static __init int setup_nomca(char *s)
}
early_param("nomca", setup_nomca);
+#ifdef CONFIG_PROC_VMCORE
+/* 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 /* CONFIG_PROC_VMCORE */
+
void __init
setup_arch (char **cmdline_p)
{
@@ -615,6 +674,7 @@ get_model_name(__u8 family, __u8 model)
{
char brand[128];
+ memcpy(brand, "Unknown", 8);
if (ia64_pal_get_brand_info(brand)) {
if (family == 0x7)
memcpy(brand, "Merced", 7);
@@ -622,8 +682,7 @@ get_model_name(__u8 family, __u8 model)
case 0: memcpy(brand, "McKinley", 9); break;
case 1: memcpy(brand, "Madison", 8); break;
case 2: memcpy(brand, "Madison up to 9M cache", 23); break;
- } else
- memcpy(brand, "Unknown", 8);
+ }
}
if (brandname[0] == '\0')
return strcpy(brandname, brand);