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[Qemu-devel] [SeaBIOS PATCH v3] boot: add a new type to halt booting
From: |
Amos Kong |
Subject: |
[Qemu-devel] [SeaBIOS PATCH v3] boot: add a new type to halt booting |
Date: |
Wed, 9 Jan 2013 13:17:07 +0800 |
Current seabios will try to boot from selected devices first,
if they are all failed, seabios will also try to boot from
un-selected devices.
For example:
@ qemu-kvm -boot order=n,menu=on ...
Guest will boot from network first, if it's failed, guest will try to
boot from other un-selected devices (floppy, cdrom, disk) one by one.
We need to make it configurable. This patch added a new type, qemu can
add "HALT" at the end of bootindex string, then seabios will halt
booting after trying to boot from selected devices.
Signed-off-by: Kevin O'Connor <address@hidden>
Signed-off-by: Amos Kong <address@hidden>
---
v3: add a new type to halt booting (Kevin)
___
src/boot.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/src/boot.c b/src/boot.c
index c67cc7f..eea2354 100644
--- a/src/boot.c
+++ b/src/boot.c
@@ -291,6 +291,7 @@ static struct bootentry_s *BootList;
#define IPL_TYPE_CBFS 0x20
#define IPL_TYPE_BEV 0x80
#define IPL_TYPE_BCV 0x81
+#define IPL_TYPE_HALT 0xf0
static void
bootentry_add(int type, int prio, u32 data, const char *desc)
@@ -488,6 +489,11 @@ boot_prep(void)
interactive_bootmenu();
wait_threads();
+ int haltprio = find_prio("HALT");
+
+ if (haltprio >= 0)
+ bootentry_add(IPL_TYPE_HALT, haltprio, 0, "HALT");
+
// Map drives and populate BEV list
struct bootentry_s *pos = BootList;
while (pos) {
@@ -672,6 +678,9 @@ do_boot(int seq_nr)
case IPL_TYPE_BEV:
boot_rom(ie->vector);
break;
+ case IPL_TYPE_HALT:
+ boot_fail();
+ break;
}
// Boot failed: invoke the boot recovery function
--
1.7.1