--- qemu/roms/seabios/src/cdrom.c	2018/04/24 18:27:19	1.1.1.3
+++ qemu/roms/seabios/src/cdrom.c	2018/04/24 19:23:50	1.1.1.5
@@ -18,7 +18,6 @@
  ****************************************************************/
 
 struct drive_s *cdemu_drive_gf VAR16VISIBLE;
-u8 *cdemu_buf_fl VAR16VISIBLE;
 
 static int
 cdemu_read(struct disk_op_s *op)
@@ -33,7 +32,7 @@ cdemu_read(struct disk_op_s *op)
 
     int count = op->count;
     op->count = 0;
-    u8 *cdbuf_fl = GET_GLOBAL(cdemu_buf_fl);
+    u8 *cdbuf_fl = GET_GLOBAL(bounce_buf_fl);
 
     if (op->lba & 3) {
         // Partial read of first block.
@@ -109,21 +108,18 @@ cdemu_setup(void)
 {
     if (!CONFIG_CDROM_EMU)
         return;
-    cdemu_drive_gf = NULL;
-    cdemu_buf_fl = NULL;
-    if (!Drives.cdcount)
+    if (!CDCount)
+        return;
+    if (bounce_buf_init() < 0)
         return;
 
     struct drive_s *drive_g = malloc_fseg(sizeof(*drive_g));
-    u8 *buf = malloc_low(CDROM_SECTOR_SIZE);
-    if (!drive_g || !buf) {
+    if (!drive_g) {
         warn_noalloc();
         free(drive_g);
-        free(buf);
         return;
     }
     cdemu_drive_gf = drive_g;
-    cdemu_buf_fl = buf;
     memset(drive_g, 0, sizeof(*drive_g));
     drive_g->type = DTYPE_CDEMU;
     drive_g->blksize = DISK_SECTOR_SIZE;
@@ -243,12 +239,13 @@ atapi_is_ready(struct disk_op_s *op)
 }
 
 int
-cdrom_boot(int cdid)
+cdrom_boot(struct drive_s *drive_g)
 {
     struct disk_op_s dop;
+    int cdid = getDriveId(EXTTYPE_CD, drive_g);
     memset(&dop, 0, sizeof(dop));
-    dop.drive_g = getDrive(EXTTYPE_CD, cdid);
-    if (!dop.drive_g)
+    dop.drive_g = drive_g;
+    if (!dop.drive_g || cdid < 0)
         return 1;
 
     int ret = atapi_is_ready(&dop);