diff options
Diffstat (limited to 'com32/modules/chain.c')
| -rw-r--r-- | com32/modules/chain.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/com32/modules/chain.c b/com32/modules/chain.c index 03893c96..c5154888 100644 --- a/com32/modules/chain.c +++ b/com32/modules/chain.c @@ -48,6 +48,10 @@ * ntldr=<loader>: * equivalent to -seg 0x2000 -file <loader>, used with WinNT's loaders * + * cmldr=<loader>: + * used with Recovery Console of Windows NT/2K/XP. + * same as ntldr=<loader> & "cmdcons\0" written to memory address 0000:7C03 + * * freedos=<loader>: * equivalent to -seg 0x60 -file <loader>, used with FreeDOS kernel.sys. * @@ -76,6 +80,7 @@ #include <syslinux/loadfile.h> #include <syslinux/bootrm.h> #include <syslinux/config.h> +#include <syslinux/video.h> #define SECTOR 512 /* bytes/sector */ @@ -84,6 +89,7 @@ static struct options { uint16_t keeppxe; uint16_t seg; bool isolinux; + bool cmldr; bool swap; bool hide; } opt; @@ -449,6 +455,7 @@ static void do_boot(void *boot_sector, size_t boot_size, uint8_t swapdrive = driveno & 0x80; int i; addr_t loadbase = opt.seg ? (opt.seg << 4) : 0x7c00; + static const char cmldr_signature[8] = "cmdcons"; mmap = syslinux_memory_map(); @@ -464,10 +471,21 @@ static void do_boot(void *boot_sector, size_t boot_size, endimage = loadbase + boot_size; - if (syslinux_add_movelist - (&mlist, loadbase, (addr_t) boot_sector, boot_size)) + if (syslinux_add_movelist(&mlist, loadbase, + (addr_t) boot_sector, boot_size)) goto enomem; + /* + * To boot the Recovery Console of Windows NT/2K/XP we need to write + * the string "cmdcons\0" to memory location 0000:7C03. + * Memory location 0000:7C00 contains the bootsector of the partition. + */ + if (opt.cmldr) { + if (syslinux_add_movelist(&mlist, 0x7c03, (addr_t)cmldr_signature, + sizeof cmldr_signature)) + goto enomem; + } + if (opt.swap && driveno != swapdrive) { static const uint8_t swapstub_master[] = { /* The actual swap code */ @@ -678,6 +696,10 @@ int main(int argc, char *argv[]) } else if (!strncmp(argv[i], "ntldr=", 6)) { opt.seg = 0x2000; /* NTLDR wants this address */ opt.loadfile = argv[i] + 6; + } else if (!strncmp(argv[i], "cmldr=", 6)) { + opt.seg = 0x2000; /* CMLDR wants this address */ + opt.loadfile = argv[i] + 6; + opt.cmldr = true; } else if (!strncmp(argv[i], "freedos=", 8)) { opt.seg = 0x60; /* FREEDOS wants this address */ opt.loadfile = argv[i] + 8; @@ -714,6 +736,7 @@ int main(int argc, char *argv[]) "Options: file=<loader> load file, instead of boot sector\n" " isolinux=<loader> load another version of ISOLINUX\n" " ntldr=<loader> load Windows bootloaders: NTLDR, SETUPLDR, BOOTMGR\n" + " cmldr=<loader> load Recovery Console of Windows NT/2K/XP\n" " freedos=<loader> load FreeDOS kernel.sys\n" " msdos=<loader> load MS-DOS io.sys\n" " pcdos=<loader> load PC-DOS ibmbio.com\n" |