[Qemu-devel] [PATCH] enable quietbios and biosprompt checks

[Cory Fields <FOSS@AtlasTechnologiesInc.com>]

Note: Default behavior is changed. Now it will default to skipping
the boot menu.

Signed-off-by: Cory Fields <FOSS@AtlasTechnologiesInc.com>
---
 bios/rombios.c |   90 +++++++++++++++++++++++++++++++++++++++++--------------
 1 files changed, 67 insertions(+), 23 deletions(-)

diff --git a/bios/rombios.c b/bios/rombios.c
index ee46e42..39a79b1 100644
--- a/bios/rombios.c
+++ b/bios/rombios.c
@@ -144,6 +144,12 @@
 #define BX_PCIBIOS       1
 #define BX_APM           1
 
+#define BX_CFG_CTL_PORT    0x510
+#define BX_CFG_DATA_PORT   0x511
+#define BX_CFG_SIGNATURE   0x0
+#define BX_CFG_BIOSPROMPT  0x07
+#define BX_CFG_QUIETBIOS   0x08
+
 #define BX_USE_ATADRV    1
 #define BX_ELTORITO_BOOT 1
 
@@ -2014,6 +2020,32 @@ Bit16u i; ipl_entry_t *e;
   return 1;
 }
 
+int qemu_cfg_port_probe()
+{
+  outw(BX_CFG_CTL_PORT, BX_CFG_SIGNATURE);
+  if (inb(BX_CFG_DATA_PORT) != 'Q') return 0;
+  if (inb(BX_CFG_DATA_PORT) != 'E') return 0;
+  if (inb(BX_CFG_DATA_PORT) != 'M') return 0;
+  if (inb(BX_CFG_DATA_PORT) != 'U') return 0;
+  return 1;
+}
+
+int qemu_biosprompt_probe()
+{
+  if(qemu_cfg_port_probe()) 
+    outw(BX_CFG_CTL_PORT, BX_CFG_BIOSPROMPT);
+      if (inb(BX_CFG_DATA_PORT)) return 1;
+  return 0;
+}
+
+int qemu_quietbios_probe()
+{
+  if(qemu_cfg_port_probe())
+    outw(BX_CFG_CTL_PORT, BX_CFG_QUIETBIOS);
+      if (inb(BX_CFG_DATA_PORT)) return 1;
+  return 0;
+}
+
 #if BX_ELTORITO_BOOT
   void
 interactive_bootkey()
@@ -2478,7 +2510,7 @@ static int await_ide(when_done,base,timeout)
 void ata_detect( )
 {
   Bit16u ebda_seg=read_word(0x0040,0x000E);
-  Bit8u  hdcount, cdcount, device, type;
+  Bit8u  hdcount, cdcount, device, type, quietbios;
   Bit8u  buffer[0x0200];
 
 #if BX_MAX_ATA_INTERFACES > 0
@@ -2738,26 +2770,28 @@ void ata_detect( )
           break;
         }
 
-      switch (type) {
-        case ATA_TYPE_ATA:
-          printf("ata%d %s: ",channel,slave?" slave":"master");
-          i=0; while(c=read_byte(get_SS(),model+i++)) printf("%c",c);
-	  if (sizeinmb < (1UL<<16))
-            printf(" ATA-%d Hard-Disk (%4u MBytes)\n", version, (Bit16u)sizeinmb);
-	  else
-            printf(" ATA-%d Hard-Disk (%4u GBytes)\n", version, (Bit16u)(sizeinmb>>10));
-          break;
-        case ATA_TYPE_ATAPI:
-          printf("ata%d %s: ",channel,slave?" slave":"master");
-          i=0; while(c=read_byte(get_SS(),model+i++)) printf("%c",c);
-          if(read_byte(ebda_seg,&EbdaData->ata.devices[device].device)==ATA_DEVICE_CDROM)
-            printf(" ATAPI-%d CD-Rom/DVD-Rom\n",version);
-          else
-            printf(" ATAPI-%d Device\n",version);
-          break;
-        case ATA_TYPE_UNKNOWN:
-          printf("ata%d %s: Unknown device\n",channel,slave?" slave":"master");
-          break;
+      if (!quietbios){
+        switch (type) {
+          case ATA_TYPE_ATA:
+            printf("ata%d %s: ",channel,slave?" slave":"master");
+            i=0; while(c=read_byte(get_SS(),model+i++)) printf("%c",c);
+	    if (sizeinmb < (1UL<<16))
+              printf(" ATA-%d Hard-Disk (%4u MBytes)\n", version, (Bit16u)sizeinmb);
+            else
+              printf(" ATA-%d Hard-Disk (%4u GBytes)\n", version, (Bit16u)(sizeinmb>>10));
+            break;
+          case ATA_TYPE_ATAPI:
+            printf("ata%d %s: ",channel,slave?" slave":"master");
+            i=0; while(c=read_byte(get_SS(),model+i++)) printf("%c",c);
+            if(read_byte(ebda_seg,&EbdaData->ata.devices[device].device)==ATA_DEVICE_CDROM)
+              printf(" ATAPI-%d CD-Rom/DVD-Rom\n",version);
+            else
+              printf(" ATAPI-%d Device\n",version);
+            break;
+          case ATA_TYPE_UNKNOWN:
+            printf("ata%d %s: Unknown device\n",channel,slave?" slave":"master");
+            break;
+          }
         }
       }
     }
@@ -2767,7 +2801,7 @@ void ata_detect( )
   write_byte(ebda_seg,&EbdaData->ata.cdcount, cdcount);
   write_byte(0x40,0x75, hdcount);
 
-  printf("\n");
+  if (!quietbios) printf("\n");
 
   // FIXME : should use bios=cmos|auto|disable bits
   // FIXME : should know about translation bits
@@ -10613,7 +10647,11 @@ post_default_ints:
   mov  ax, #0xc780
   call rom_scan
 
+  call   _qemu_quietbios_probe
+  test   al,al
+  jnz    skip_bios_print
   call _print_bios_banner
+  skip_bios_print:
 
 #if BX_ROMBIOS32
   call rombios32_init
@@ -10660,7 +10698,13 @@ post_default_ints:
   call rom_scan
 
 #if BX_ELTORITO_BOOT
-  call _interactive_bootkey
+
+ call   _qemu_biosprompt_probe
+ test   al,al
+ jz    skip_timer
+ call _interactive_bootkey
+ 
+skip_timer:
 #endif // BX_ELTORITO_BOOT
 
   sti        ;; enable interrupts
-- 
1.6.0.6