diff options
author | Amos Kong <akong@redhat.com> | 2012-09-07 11:11:03 +0800 |
---|---|---|
committer | Anthony Liguori <aliguori@us.ibm.com> | 2012-09-25 20:05:04 -0500 |
commit | ac05f3492421caeb05809ffa02c6198ede179e43 (patch) | |
tree | 1554c89dcd8a76dd519bd1771d93cbde0fd3c63e /hw | |
parent | 3202becaa2b805497ce9e6faa6edfb83665f91b1 (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>
Diffstat (limited to 'hw')
-rw-r--r-- | hw/fw_cfg.c | 25 |
1 files changed, 25 insertions, 0 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); |