diff options
Diffstat (limited to 'kexec/arch/i386/crashdump-x86.c')
| -rw-r--r-- | kexec/arch/i386/crashdump-x86.c | 43 |
1 files changed, 41 insertions, 2 deletions
diff --git a/kexec/arch/i386/crashdump-x86.c b/kexec/arch/i386/crashdump-x86.c index 6e44741..b7fbac2 100644 --- a/kexec/arch/i386/crashdump-x86.c +++ b/kexec/arch/i386/crashdump-x86.c @@ -246,6 +246,8 @@ static int get_crash_memory_ranges(struct memory_range **range, int *ranges, type = RANGE_ACPI; } else if(memcmp(str,"ACPI Non-volatile Storage\n",26) == 0 ) { type = RANGE_ACPI_NVS; + } else if(memcmp(str,"reserved\n", 9) == 0 ) { + type = RANGE_RESERVED; } else if (memcmp(str, "GART\n", 5) == 0) { gart_start = start; gart_end = end; @@ -899,6 +901,39 @@ static void get_backup_area(struct kexec_info *info, info->backup_src_size = BACKUP_SRC_END - BACKUP_SRC_START + 1; } +/* Appends memmap=X$Y commandline for reserved memory to command line*/ +static int cmdline_add_memmap_reserved(char *cmdline, unsigned long start, + unsigned long end) +{ + int cmdlen, len, align = 1024; + unsigned long startk, endk; + char str_mmap[256], str_tmp[20]; + + if (!(end - start)) + return 0; + + startk = start/1024; + endk = (end + align - 1)/1024; + strcpy (str_mmap, " memmap="); + ultoa((endk - startk), str_tmp); + strcat (str_mmap, str_tmp); + strcat (str_mmap, "K$"); + ultoa(startk, str_tmp); + strcat (str_mmap, str_tmp); + strcat (str_mmap, "K"); + len = strlen(str_mmap); + cmdlen = strlen(cmdline) + len; + if (cmdlen > (COMMAND_LINE_SIZE - 1)) + die("Command line overflow\n"); + strcat(cmdline, str_mmap); + +#ifdef DEBUG + printf("Command line after adding reserved memmap\n"); + printf("%s\n", cmdline); +#endif + return 0; +} + /* Loads additional segments in case of a panic kernel is being loaded. * One segment for backup region, another segment for storing elf headers * for crash memory image. @@ -1051,11 +1086,15 @@ int load_crashdump_segments(struct kexec_info *info, char* mod_cmdline, for (i = 0; i < CRASH_MAX_MEMORY_RANGES; i++) { unsigned long start, end; if ( !( mem_range[i].type == RANGE_ACPI - || mem_range[i].type == RANGE_ACPI_NVS) ) + || mem_range[i].type == RANGE_ACPI_NVS + || mem_range[i].type == RANGE_RESERVED) ) continue; start = mem_range[i].start; end = mem_range[i].end; - cmdline_add_memmap_acpi(mod_cmdline, start, end); + if (mem_range[i].type == RANGE_RESERVED) + cmdline_add_memmap_reserved(mod_cmdline, start, end); + else + cmdline_add_memmap_acpi(mod_cmdline, start, end); } return 0; } |