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-rw-r--r--qemu/pc-bios/s390-ccw/bootmap.c746
1 files changed, 0 insertions, 746 deletions
diff --git a/qemu/pc-bios/s390-ccw/bootmap.c b/qemu/pc-bios/s390-ccw/bootmap.c
deleted file mode 100644
index 611102e3e..000000000
--- a/qemu/pc-bios/s390-ccw/bootmap.c
+++ /dev/null
@@ -1,746 +0,0 @@
-/*
- * QEMU S390 bootmap interpreter
- *
- * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or (at
- * your option) any later version. See the COPYING file in the top-level
- * directory.
- */
-
-#include "s390-ccw.h"
-#include "bootmap.h"
-#include "virtio.h"
-
-#ifdef DEBUG
-/* #define DEBUG_FALLBACK */
-#endif
-
-#ifdef DEBUG_FALLBACK
-#define dputs(txt) \
- do { sclp_print("zipl: " txt); } while (0)
-#else
-#define dputs(fmt, ...) \
- do { } while (0)
-#endif
-
-/* Scratch space */
-static uint8_t sec[MAX_SECTOR_SIZE*4] __attribute__((__aligned__(PAGE_SIZE)));
-
-typedef struct ResetInfo {
- uint32_t ipl_mask;
- uint32_t ipl_addr;
- uint32_t ipl_continue;
-} ResetInfo;
-
-static ResetInfo save;
-
-static void jump_to_IPL_2(void)
-{
- ResetInfo *current = 0;
-
- void (*ipl)(void) = (void *) (uint64_t) current->ipl_continue;
- *current = save;
- ipl(); /* should not return */
-}
-
-static void jump_to_IPL_code(uint64_t address)
-{
- /* store the subsystem information _after_ the bootmap was loaded */
- write_subsystem_identification();
- /*
- * The IPL PSW is at address 0. We also must not overwrite the
- * content of non-BIOS memory after we loaded the guest, so we
- * save the original content and restore it in jump_to_IPL_2.
- */
- ResetInfo *current = 0;
-
- save = *current;
- current->ipl_addr = (uint32_t) (uint64_t) &jump_to_IPL_2;
- current->ipl_continue = address & 0x7fffffff;
-
- debug_print_int("set IPL addr to", current->ipl_continue);
-
- /* Ensure the guest output starts fresh */
- sclp_print("\n");
-
- /*
- * HACK ALERT.
- * We use the load normal reset to keep r15 unchanged. jump_to_IPL_2
- * can then use r15 as its stack pointer.
- */
- asm volatile("lghi 1,1\n\t"
- "diag 1,1,0x308\n\t"
- : : : "1", "memory");
- panic("\n! IPL returns !\n");
-}
-
-/***********************************************************************
- * IPL an ECKD DASD (CDL or LDL/CMS format)
- */
-
-static unsigned char _bprs[8*1024]; /* guessed "max" ECKD sector size */
-static const int max_bprs_entries = sizeof(_bprs) / sizeof(ExtEckdBlockPtr);
-
-static inline void verify_boot_info(BootInfo *bip)
-{
- IPL_assert(magic_match(bip->magic, ZIPL_MAGIC), "No zIPL sig in BootInfo");
- IPL_assert(bip->version == BOOT_INFO_VERSION, "Wrong zIPL version");
- IPL_assert(bip->bp_type == BOOT_INFO_BP_TYPE_IPL, "DASD is not for IPL");
- IPL_assert(bip->dev_type == BOOT_INFO_DEV_TYPE_ECKD, "DASD is not ECKD");
- IPL_assert(bip->flags == BOOT_INFO_FLAGS_ARCH, "Not for this arch");
- IPL_assert(block_size_ok(bip->bp.ipl.bm_ptr.eckd.bptr.size),
- "Bad block size in zIPL section of the 1st record.");
-}
-
-static block_number_t eckd_block_num(BootMapPointer *p)
-{
- const uint64_t sectors = virtio_get_sectors();
- const uint64_t heads = virtio_get_heads();
- const uint64_t cylinder = p->eckd.cylinder
- + ((p->eckd.head & 0xfff0) << 12);
- const uint64_t head = p->eckd.head & 0x000f;
- const block_number_t block = sectors * heads * cylinder
- + sectors * head
- + p->eckd.sector
- - 1; /* block nr starts with zero */
- return block;
-}
-
-static bool eckd_valid_address(BootMapPointer *p)
-{
- const uint64_t head = p->eckd.head & 0x000f;
-
- if (head >= virtio_get_heads()
- || p->eckd.sector > virtio_get_sectors()
- || p->eckd.sector <= 0) {
- return false;
- }
-
- if (!virtio_guessed_disk_nature() &&
- eckd_block_num(p) >= virtio_get_blocks()) {
- return false;
- }
-
- return true;
-}
-
-static block_number_t load_eckd_segments(block_number_t blk, uint64_t *address)
-{
- block_number_t block_nr;
- int j, rc;
- BootMapPointer *bprs = (void *)_bprs;
- bool more_data;
-
- memset(_bprs, FREE_SPACE_FILLER, sizeof(_bprs));
- read_block(blk, bprs, "BPRS read failed");
-
- do {
- more_data = false;
- for (j = 0;; j++) {
- block_nr = eckd_block_num((void *)&(bprs[j].xeckd));
- if (is_null_block_number(block_nr)) { /* end of chunk */
- break;
- }
-
- /* we need the updated blockno for the next indirect entry
- * in the chain, but don't want to advance address
- */
- if (j == (max_bprs_entries - 1)) {
- break;
- }
-
- IPL_assert(block_size_ok(bprs[j].xeckd.bptr.size),
- "bad chunk block size");
- IPL_assert(eckd_valid_address(&bprs[j]), "bad chunk ECKD addr");
-
- if ((bprs[j].xeckd.bptr.count == 0) && unused_space(&(bprs[j+1]),
- sizeof(EckdBlockPtr))) {
- /* This is a "continue" pointer.
- * This ptr should be the last one in the current
- * script section.
- * I.e. the next ptr must point to the unused memory area
- */
- memset(_bprs, FREE_SPACE_FILLER, sizeof(_bprs));
- read_block(block_nr, bprs, "BPRS continuation read failed");
- more_data = true;
- break;
- }
-
- /* Load (count+1) blocks of code at (block_nr)
- * to memory (address).
- */
- rc = virtio_read_many(block_nr, (void *)(*address),
- bprs[j].xeckd.bptr.count+1);
- IPL_assert(rc == 0, "code chunk read failed");
-
- *address += (bprs[j].xeckd.bptr.count+1) * virtio_get_block_size();
- }
- } while (more_data);
- return block_nr;
-}
-
-static void run_eckd_boot_script(block_number_t mbr_block_nr)
-{
- int i;
- block_number_t block_nr;
- uint64_t address;
- ScsiMbr *scsi_mbr = (void *)sec;
- BootMapScript *bms = (void *)sec;
-
- memset(sec, FREE_SPACE_FILLER, sizeof(sec));
- read_block(mbr_block_nr, sec, "Cannot read MBR");
-
- block_nr = eckd_block_num((void *)&(scsi_mbr->blockptr));
-
- memset(sec, FREE_SPACE_FILLER, sizeof(sec));
- read_block(block_nr, sec, "Cannot read Boot Map Script");
-
- for (i = 0; bms->entry[i].type == BOOT_SCRIPT_LOAD; i++) {
- address = bms->entry[i].address.load_address;
- block_nr = eckd_block_num(&(bms->entry[i].blkptr));
-
- do {
- block_nr = load_eckd_segments(block_nr, &address);
- } while (block_nr != -1);
- }
-
- IPL_assert(bms->entry[i].type == BOOT_SCRIPT_EXEC,
- "Unknown script entry type");
- jump_to_IPL_code(bms->entry[i].address.load_address); /* no return */
-}
-
-static void ipl_eckd_cdl(void)
-{
- XEckdMbr *mbr;
- Ipl2 *ipl2 = (void *)sec;
- IplVolumeLabel *vlbl = (void *)sec;
- block_number_t block_nr;
-
- /* we have just read the block #0 and recognized it as "IPL1" */
- sclp_print("CDL\n");
-
- memset(sec, FREE_SPACE_FILLER, sizeof(sec));
- read_block(1, ipl2, "Cannot read IPL2 record at block 1");
-
- mbr = &ipl2->u.x.mbr;
- IPL_assert(magic_match(mbr, ZIPL_MAGIC), "No zIPL section in IPL2 record.");
- IPL_assert(block_size_ok(mbr->blockptr.xeckd.bptr.size),
- "Bad block size in zIPL section of IPL2 record.");
- IPL_assert(mbr->dev_type == DEV_TYPE_ECKD,
- "Non-ECKD device type in zIPL section of IPL2 record.");
-
- /* save pointer to Boot Script */
- block_nr = eckd_block_num((void *)&(mbr->blockptr));
-
- memset(sec, FREE_SPACE_FILLER, sizeof(sec));
- read_block(2, vlbl, "Cannot read Volume Label at block 2");
- IPL_assert(magic_match(vlbl->key, VOL1_MAGIC),
- "Invalid magic of volume label block");
- IPL_assert(magic_match(vlbl->f.key, VOL1_MAGIC),
- "Invalid magic of volser block");
- print_volser(vlbl->f.volser);
-
- run_eckd_boot_script(block_nr);
- /* no return */
-}
-
-static void print_eckd_ldl_msg(ECKD_IPL_mode_t mode)
-{
- LDL_VTOC *vlbl = (void *)sec; /* already read, 3rd block */
- char msg[4] = { '?', '.', '\n', '\0' };
-
- sclp_print((mode == ECKD_CMS) ? "CMS" : "LDL");
- sclp_print(" version ");
- switch (vlbl->LDL_version) {
- case LDL1_VERSION:
- msg[0] = '1';
- break;
- case LDL2_VERSION:
- msg[0] = '2';
- break;
- default:
- msg[0] = vlbl->LDL_version;
- msg[0] &= 0x0f; /* convert EBCDIC */
- msg[0] |= 0x30; /* to ASCII (digit) */
- msg[1] = '?';
- break;
- }
- sclp_print(msg);
- print_volser(vlbl->volser);
-}
-
-static void ipl_eckd_ldl(ECKD_IPL_mode_t mode)
-{
- block_number_t block_nr;
- BootInfo *bip = (void *)(sec + 0x70); /* BootInfo is MBR for LDL */
-
- if (mode != ECKD_LDL_UNLABELED) {
- print_eckd_ldl_msg(mode);
- }
-
- /* DO NOT read BootMap pointer (only one, xECKD) at block #2 */
-
- memset(sec, FREE_SPACE_FILLER, sizeof(sec));
- read_block(0, sec, "Cannot read block 0 to grab boot info.");
- if (mode == ECKD_LDL_UNLABELED) {
- if (!magic_match(bip->magic, ZIPL_MAGIC)) {
- return; /* not applicable layout */
- }
- sclp_print("unlabeled LDL.\n");
- }
- verify_boot_info(bip);
-
- block_nr = eckd_block_num((void *)&(bip->bp.ipl.bm_ptr.eckd.bptr));
- run_eckd_boot_script(block_nr);
- /* no return */
-}
-
-static void print_eckd_msg(void)
-{
- char msg[] = "Using ECKD scheme (block size *****), ";
- char *p = &msg[34], *q = &msg[30];
- int n = virtio_get_block_size();
-
- /* Fill in the block size and show up the message */
- if (n > 0 && n <= 99999) {
- while (n) {
- *p-- = '0' + (n % 10);
- n /= 10;
- }
- while (p >= q) {
- *p-- = ' ';
- }
- }
- sclp_print(msg);
-}
-
-static void ipl_eckd(void)
-{
- ScsiMbr *mbr = (void *)sec;
- LDL_VTOC *vlbl = (void *)sec;
-
- print_eckd_msg();
-
- /* Grab the MBR again */
- memset(sec, FREE_SPACE_FILLER, sizeof(sec));
- read_block(0, mbr, "Cannot read block 0 on DASD");
-
- if (magic_match(mbr->magic, IPL1_MAGIC)) {
- ipl_eckd_cdl(); /* no return */
- }
-
- /* LDL/CMS? */
- memset(sec, FREE_SPACE_FILLER, sizeof(sec));
- read_block(2, vlbl, "Cannot read block 2");
-
- if (magic_match(vlbl->magic, CMS1_MAGIC)) {
- ipl_eckd_ldl(ECKD_CMS); /* no return */
- }
- if (magic_match(vlbl->magic, LNX1_MAGIC)) {
- ipl_eckd_ldl(ECKD_LDL); /* no return */
- }
-
- ipl_eckd_ldl(ECKD_LDL_UNLABELED); /* it still may return */
- /*
- * Ok, it is not a LDL by any means.
- * It still might be a CDL with zero record keys for IPL1 and IPL2
- */
- ipl_eckd_cdl();
-}
-
-/***********************************************************************
- * IPL a SCSI disk
- */
-
-static void zipl_load_segment(ComponentEntry *entry)
-{
- const int max_entries = (MAX_SECTOR_SIZE / sizeof(ScsiBlockPtr));
- ScsiBlockPtr *bprs = (void *)sec;
- const int bprs_size = sizeof(sec);
- block_number_t blockno;
- uint64_t address;
- int i;
- char err_msg[] = "zIPL failed to read BPRS at 0xZZZZZZZZZZZZZZZZ";
- char *blk_no = &err_msg[30]; /* where to print blockno in (those ZZs) */
-
- blockno = entry->data.blockno;
- address = entry->load_address;
-
- debug_print_int("loading segment at block", blockno);
- debug_print_int("addr", address);
-
- do {
- memset(bprs, FREE_SPACE_FILLER, bprs_size);
- fill_hex_val(blk_no, &blockno, sizeof(blockno));
- read_block(blockno, bprs, err_msg);
-
- for (i = 0;; i++) {
- uint64_t *cur_desc = (void *)&bprs[i];
-
- blockno = bprs[i].blockno;
- if (!blockno) {
- break;
- }
-
- /* we need the updated blockno for the next indirect entry in the
- chain, but don't want to advance address */
- if (i == (max_entries - 1)) {
- break;
- }
-
- if (bprs[i].blockct == 0 && unused_space(&bprs[i + 1],
- sizeof(ScsiBlockPtr))) {
- /* This is a "continue" pointer.
- * This ptr is the last one in the current script section.
- * I.e. the next ptr must point to the unused memory area.
- * The blockno is not zero, so the upper loop must continue
- * reading next section of BPRS.
- */
- break;
- }
- address = virtio_load_direct(cur_desc[0], cur_desc[1], 0,
- (void *)address);
- IPL_assert(address != -1, "zIPL load segment failed");
- }
- } while (blockno);
-}
-
-/* Run a zipl program */
-static void zipl_run(ScsiBlockPtr *pte)
-{
- ComponentHeader *header;
- ComponentEntry *entry;
- uint8_t tmp_sec[MAX_SECTOR_SIZE];
-
- read_block(pte->blockno, tmp_sec, "Cannot read header");
- header = (ComponentHeader *)tmp_sec;
-
- IPL_assert(magic_match(tmp_sec, ZIPL_MAGIC), "No zIPL magic in header");
- IPL_assert(header->type == ZIPL_COMP_HEADER_IPL, "Bad header type");
-
- dputs("start loading images\n");
-
- /* Load image(s) into RAM */
- entry = (ComponentEntry *)(&header[1]);
- while (entry->component_type == ZIPL_COMP_ENTRY_LOAD) {
- zipl_load_segment(entry);
-
- entry++;
-
- IPL_assert((uint8_t *)(&entry[1]) <= (tmp_sec + MAX_SECTOR_SIZE),
- "Wrong entry value");
- }
-
- IPL_assert(entry->component_type == ZIPL_COMP_ENTRY_EXEC, "No EXEC entry");
-
- /* should not return */
- jump_to_IPL_code(entry->load_address);
-}
-
-static void ipl_scsi(void)
-{
- ScsiMbr *mbr = (void *)sec;
- uint8_t *ns, *ns_end;
- int program_table_entries = 0;
- const int pte_len = sizeof(ScsiBlockPtr);
- ScsiBlockPtr *prog_table_entry;
-
- /* Grab the MBR */
- memset(sec, FREE_SPACE_FILLER, sizeof(sec));
- read_block(0, mbr, "Cannot read block 0");
-
- if (!magic_match(mbr->magic, ZIPL_MAGIC)) {
- return;
- }
-
- sclp_print("Using SCSI scheme.\n");
- debug_print_int("MBR Version", mbr->version_id);
- IPL_check(mbr->version_id == 1,
- "Unknown MBR layout version, assuming version 1");
- debug_print_int("program table", mbr->blockptr.blockno);
- IPL_assert(mbr->blockptr.blockno, "No Program Table");
-
- /* Parse the program table */
- read_block(mbr->blockptr.blockno, sec,
- "Error reading Program Table");
-
- IPL_assert(magic_match(sec, ZIPL_MAGIC), "No zIPL magic in PT");
-
- ns_end = sec + virtio_get_block_size();
- for (ns = (sec + pte_len); (ns + pte_len) < ns_end; ns += pte_len) {
- prog_table_entry = (ScsiBlockPtr *)ns;
- if (!prog_table_entry->blockno) {
- break;
- }
-
- program_table_entries++;
- }
-
- debug_print_int("program table entries", program_table_entries);
-
- IPL_assert(program_table_entries != 0, "Empty Program Table");
-
- /* Run the default entry */
-
- prog_table_entry = (ScsiBlockPtr *)(sec + pte_len);
-
- zipl_run(prog_table_entry); /* no return */
-}
-
-/***********************************************************************
- * IPL El Torito ISO9660 image or DVD
- */
-
-static bool is_iso_bc_entry_compatible(IsoBcSection *s)
-{
- uint8_t *magic_sec = (uint8_t *)(sec + ISO_SECTOR_SIZE);
-
- if (s->unused || !s->sector_count) {
- return false;
- }
- read_iso_sector(bswap32(s->load_rba), magic_sec,
- "Failed to read image sector 0");
-
- /* Checking bytes 8 - 32 for S390 Linux magic */
- return !_memcmp(magic_sec + 8, linux_s390_magic, 24);
-}
-
-/* Location of the current sector of the directory */
-static uint32_t sec_loc[ISO9660_MAX_DIR_DEPTH];
-/* Offset in the current sector of the directory */
-static uint32_t sec_offset[ISO9660_MAX_DIR_DEPTH];
-/* Remained directory space in bytes */
-static uint32_t dir_rem[ISO9660_MAX_DIR_DEPTH];
-
-static inline uint32_t iso_get_file_size(uint32_t load_rba)
-{
- IsoVolDesc *vd = (IsoVolDesc *)sec;
- IsoDirHdr *cur_record = &vd->vd.primary.rootdir;
- uint8_t *temp = sec + ISO_SECTOR_SIZE;
- int level = 0;
-
- read_iso_sector(ISO_PRIMARY_VD_SECTOR, sec,
- "Failed to read ISO primary descriptor");
- sec_loc[0] = iso_733_to_u32(cur_record->ext_loc);
- dir_rem[0] = 0;
- sec_offset[0] = 0;
-
- while (level >= 0) {
- IPL_assert(sec_offset[level] <= ISO_SECTOR_SIZE,
- "Directory tree structure violation");
-
- cur_record = (IsoDirHdr *)(temp + sec_offset[level]);
-
- if (sec_offset[level] == 0) {
- read_iso_sector(sec_loc[level], temp,
- "Failed to read ISO directory");
- if (dir_rem[level] == 0) {
- /* Skip self and parent records */
- dir_rem[level] = iso_733_to_u32(cur_record->data_len) -
- cur_record->dr_len;
- sec_offset[level] += cur_record->dr_len;
-
- cur_record = (IsoDirHdr *)(temp + sec_offset[level]);
- dir_rem[level] -= cur_record->dr_len;
- sec_offset[level] += cur_record->dr_len;
- continue;
- }
- }
-
- if (!cur_record->dr_len || sec_offset[level] == ISO_SECTOR_SIZE) {
- /* Zero-padding and/or the end of current sector */
- dir_rem[level] -= ISO_SECTOR_SIZE - sec_offset[level];
- sec_offset[level] = 0;
- sec_loc[level]++;
- } else {
- /* The directory record is valid */
- if (load_rba == iso_733_to_u32(cur_record->ext_loc)) {
- return iso_733_to_u32(cur_record->data_len);
- }
-
- dir_rem[level] -= cur_record->dr_len;
- sec_offset[level] += cur_record->dr_len;
-
- if (cur_record->file_flags & 0x2) {
- /* Subdirectory */
- if (level == ISO9660_MAX_DIR_DEPTH - 1) {
- sclp_print("ISO-9660 directory depth limit exceeded\n");
- } else {
- level++;
- sec_loc[level] = iso_733_to_u32(cur_record->ext_loc);
- sec_offset[level] = 0;
- dir_rem[level] = 0;
- continue;
- }
- }
- }
-
- if (dir_rem[level] == 0) {
- /* Nothing remaining */
- level--;
- read_iso_sector(sec_loc[level], temp,
- "Failed to read ISO directory");
- }
- }
-
- return 0;
-}
-
-static void load_iso_bc_entry(IsoBcSection *load)
-{
- IsoBcSection s = *load;
- /*
- * According to spec, extent for each file
- * is padded and ISO_SECTOR_SIZE bytes aligned
- */
- uint32_t blks_to_load = bswap16(s.sector_count) >> ET_SECTOR_SHIFT;
- uint32_t real_size = iso_get_file_size(bswap32(s.load_rba));
-
- if (real_size) {
- /* Round up blocks to load */
- blks_to_load = (real_size + ISO_SECTOR_SIZE - 1) / ISO_SECTOR_SIZE;
- sclp_print("ISO boot image size verified\n");
- } else {
- sclp_print("ISO boot image size could not be verified\n");
- }
-
- read_iso_boot_image(bswap32(s.load_rba),
- (void *)((uint64_t)bswap16(s.load_segment)),
- blks_to_load);
-
- /* Trying to get PSW at zero address */
- if (*((uint64_t *)0) & IPL_PSW_MASK) {
- jump_to_IPL_code((*((uint64_t *)0)) & 0x7fffffff);
- }
-
- /* Try default linux start address */
- jump_to_IPL_code(KERN_IMAGE_START);
-}
-
-static uint32_t find_iso_bc(void)
-{
- IsoVolDesc *vd = (IsoVolDesc *)sec;
- uint32_t block_num = ISO_PRIMARY_VD_SECTOR;
-
- if (virtio_read_many(block_num++, sec, 1)) {
- /* If primary vd cannot be read, there is no boot catalog */
- return 0;
- }
-
- while (is_iso_vd_valid(vd) && vd->type != VOL_DESC_TERMINATOR) {
- if (vd->type == VOL_DESC_TYPE_BOOT) {
- IsoVdElTorito *et = &vd->vd.boot;
-
- if (!_memcmp(&et->el_torito[0], el_torito_magic, 32)) {
- return bswap32(et->bc_offset);
- }
- }
- read_iso_sector(block_num++, sec,
- "Failed to read ISO volume descriptor");
- }
-
- return 0;
-}
-
-static IsoBcSection *find_iso_bc_entry(void)
-{
- IsoBcEntry *e = (IsoBcEntry *)sec;
- uint32_t offset = find_iso_bc();
- int i;
-
- if (!offset) {
- return NULL;
- }
-
- read_iso_sector(offset, sec, "Failed to read El Torito boot catalog");
-
- if (!is_iso_bc_valid(e)) {
- /* The validation entry is mandatory */
- panic("No valid boot catalog found!\n");
- return NULL;
- }
-
- /*
- * Each entry has 32 bytes size, so one sector cannot contain > 64 entries.
- * We consider only boot catalogs with no more than 64 entries.
- */
- for (i = 1; i < ISO_BC_ENTRY_PER_SECTOR; i++) {
- if (e[i].id == ISO_BC_BOOTABLE_SECTION) {
- if (is_iso_bc_entry_compatible(&e[i].body.sect)) {
- return &e[i].body.sect;
- }
- }
- }
-
- panic("No suitable boot entry found on ISO-9660 media!\n");
-
- return NULL;
-}
-
-static void ipl_iso_el_torito(void)
-{
- IsoBcSection *s = find_iso_bc_entry();
-
- if (s) {
- load_iso_bc_entry(s);
- /* no return */
- }
-}
-
-/***********************************************************************
- * Bus specific IPL sequences
- */
-
-static void zipl_load_vblk(void)
-{
- if (virtio_guessed_disk_nature()) {
- virtio_assume_iso9660();
- }
- ipl_iso_el_torito();
-
- if (virtio_guessed_disk_nature()) {
- sclp_print("Using guessed DASD geometry.\n");
- virtio_assume_eckd();
- }
- ipl_eckd();
-}
-
-static void zipl_load_vscsi(void)
-{
- if (virtio_get_block_size() == VIRTIO_ISO_BLOCK_SIZE) {
- /* Is it an ISO image in non-CD drive? */
- ipl_iso_el_torito();
- }
-
- sclp_print("Using guessed DASD geometry.\n");
- virtio_assume_eckd();
- ipl_eckd();
-}
-
-/***********************************************************************
- * IPL starts here
- */
-
-void zipl_load(void)
-{
- if (virtio_get_device()->is_cdrom) {
- ipl_iso_el_torito();
- panic("\n! Cannot IPL this ISO image !\n");
- }
-
- ipl_scsi();
-
- switch (virtio_get_device_type()) {
- case VIRTIO_ID_BLOCK:
- zipl_load_vblk();
- break;
- case VIRTIO_ID_SCSI:
- zipl_load_vscsi();
- break;
- default:
- panic("\n! Unknown IPL device type !\n");
- }
-
- panic("\n* this can never happen *\n");
-}