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authorAmos Kong <akong@redhat.com>2012-09-07 11:11:03 +0800
committerAnthony Liguori <aliguori@us.ibm.com>2012-09-25 20:05:04 -0500
commitac05f3492421caeb05809ffa02c6198ede179e43 (patch)
tree1554c89dcd8a76dd519bd1771d93cbde0fd3c63e
parent3202becaa2b805497ce9e6faa6edfb83665f91b1 (diff)
add a boot parameter to set reboot timeout
Added an option to let qemu transfer a configuration file to bios, "etc/boot-fail-wait", which could be specified by command -boot reboot-timeout=T T have a max value of 0xffff, unit is ms. With this option, guest will wait for a given time if not find bootabled device, then reboot. If reboot-timeout is '-1', guest will not reboot, qemu passes '-1' to bios by default. This feature need the new seabios's support. Seabios pulls the value from the fwcfg "file" interface, this interface is used because SeaBIOS needs a reliable way of obtaining a name, value size, and value. It in no way requires that there be a real file on the user's host machine. Signed-off-by: Amos Kong <akong@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
-rw-r--r--hw/fw_cfg.c25
-rw-r--r--qemu-config.c3
-rw-r--r--qemu-options.hx12
-rw-r--r--vl.c3
4 files changed, 39 insertions, 4 deletions
diff --git a/hw/fw_cfg.c b/hw/fw_cfg.c
index 7b3b5769a2..dcde1a943c 100644
--- a/hw/fw_cfg.c
+++ b/hw/fw_cfg.c
@@ -183,6 +183,30 @@ static void fw_cfg_bootsplash(FWCfgState *s)
}
}
+static void fw_cfg_reboot(FWCfgState *s)
+{
+ int reboot_timeout = -1;
+ char *p;
+ const char *temp;
+
+ /* get user configuration */
+ QemuOptsList *plist = qemu_find_opts("boot-opts");
+ QemuOpts *opts = QTAILQ_FIRST(&plist->head);
+ if (opts != NULL) {
+ temp = qemu_opt_get(opts, "reboot-timeout");
+ if (temp != NULL) {
+ p = (char *)temp;
+ reboot_timeout = strtol(p, (char **)&p, 10);
+ }
+ }
+ /* validate the input */
+ if (reboot_timeout > 0xffff) {
+ error_report("reboot timeout is larger than 65535, force it to 65535.");
+ reboot_timeout = 0xffff;
+ }
+ fw_cfg_add_file(s, "etc/boot-fail-wait", g_memdup(&reboot_timeout, 4), 4);
+}
+
static void fw_cfg_write(FWCfgState *s, uint8_t value)
{
int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL);
@@ -497,6 +521,7 @@ FWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
fw_cfg_add_i16(s, FW_CFG_MAX_CPUS, (uint16_t)max_cpus);
fw_cfg_add_i16(s, FW_CFG_BOOT_MENU, (uint16_t)boot_menu);
fw_cfg_bootsplash(s);
+ fw_cfg_reboot(s);
s->machine_ready.notify = fw_cfg_machine_ready;
qemu_add_machine_init_done_notifier(&s->machine_ready);
diff --git a/qemu-config.c b/qemu-config.c
index 12eafbb4f5..cd1ec2165a 100644
--- a/qemu-config.c
+++ b/qemu-config.c
@@ -645,6 +645,9 @@ QemuOptsList qemu_boot_opts = {
}, {
.name = "splash-time",
.type = QEMU_OPT_STRING,
+ }, {
+ .name = "reboot-timeout",
+ .type = QEMU_OPT_STRING,
},
{ /*End of list */ }
},
diff --git a/qemu-options.hx b/qemu-options.hx
index 09c86c4cb0..7d97f96928 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -344,13 +344,14 @@ ETEXI
DEF("boot", HAS_ARG, QEMU_OPTION_boot,
"-boot [order=drives][,once=drives][,menu=on|off]\n"
- " [,splash=sp_name][,splash-time=sp_time]\n"
+ " [,splash=sp_name][,splash-time=sp_time][,reboot-timeout=rb_time]\n"
" 'drives': floppy (a), hard disk (c), CD-ROM (d), network (n)\n"
" 'sp_name': the file's name that would be passed to bios as logo picture, if menu=on\n"
- " 'sp_time': the period that splash picture last if menu=on, unit is ms\n",
+ " 'sp_time': the period that splash picture last if menu=on, unit is ms\n"
+ " 'rb_timeout': the timeout before guest reboot when boot failed, unit is ms\n",
QEMU_ARCH_ALL)
STEXI
-@item -boot [order=@var{drives}][,once=@var{drives}][,menu=on|off][,splash=@var{sp_name}][,splash-time=@var{sp_time}]
+@item -boot [order=@var{drives}][,once=@var{drives}][,menu=on|off][,splash=@var{sp_name}][,splash-time=@var{sp_time}][,reboot-timeout=@var{rb_timeout}]
@findex -boot
Specify boot order @var{drives} as a string of drive letters. Valid
drive letters depend on the target achitecture. The x86 PC uses: a, b
@@ -369,6 +370,11 @@ limitation: The splash file could be a jpeg file or a BMP file in 24 BPP
format(true color). The resolution should be supported by the SVGA mode, so
the recommended is 320x240, 640x480, 800x640.
+A timeout could be passed to bios, guest will pause for @var{rb_timeout} ms
+when boot failed, then reboot. If @var{rb_timeout} is '-1', guest will not
+reboot, qemu passes '-1' to bios by default. Currently Seabios for X86
+system support it.
+
@example
# try to boot from network first, then from hard disk
qemu-system-i386 -boot order=nc
diff --git a/vl.c b/vl.c
index 599d17a752..8d305ca59b 100644
--- a/vl.c
+++ b/vl.c
@@ -2632,7 +2632,8 @@ int main(int argc, char **argv, char **envp)
{
static const char * const params[] = {
"order", "once", "menu",
- "splash", "splash-time", NULL
+ "splash", "splash-time",
+ "reboot-timeout", NULL
};
char buf[sizeof(boot_devices)];
char *standard_boot_devices;