[PATCHv6 16/16] Pass boot device list to firmware.

Gleb Natapov
2010-11-17T16:44:13Z

Signed-off-by: Gleb Natapov <gleb@redhat.com>
---
hw/fw_cfg.c | 14 ++++++++++++++
sysemu.h | 1 +
vl.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 63 insertions(+), 0 deletions(-)

diff --git a/hw/fw_cfg.c b/hw/fw_cfg.c
index 7b9434f..20a816f 100644
--- a/hw/fw_cfg.c
+++ b/hw/fw_cfg.c
@@ -53,6 +53,7 @@ struct FWCfgState {
FWCfgFiles *files;
uint16_t cur_entry;
uint32_t cur_offset;
+ Notifier machine_ready;
};

static void fw_cfg_write(FWCfgState *s, uint8_t value)
@@ -315,6 +316,15 @@ int fw_cfg_add_file(FWCfgState *s, const char *filename, uint8_t *data,
return 1;
}

+static void fw_cfg_machine_ready(struct Notifier* n)
+{
+ uint32_t len;
+ FWCfgState *s = container_of(n, FWCfgState, machine_ready);
+ char *bootindex = get_boot_devices_list(&len);
+
+ fw_cfg_add_file(s, "bootorder", (uint8_t*)bootindex, len);
+}
+
FWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
target_phys_addr_t ctl_addr, target_phys_addr_t data_addr)
{
@@ -343,6 +353,10 @@ 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);

+
+ s->machine_ready.notify = fw_cfg_machine_ready;
+ qemu_add_machine_init_done_notifier(&s->machine_ready);
+
return s;
}

diff --git a/sysemu.h b/sysemu.h
index c42f33a..38a20a3 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -196,4 +196,5 @@ void register_devices(void);

void add_boot_device_path(int32_t bootindex, DeviceState *dev,
const char *suffix);
+char *get_boot_devices_list(uint32_t *size);
#endif
diff --git a/vl.c b/vl.c
index d6564d4..da025c1 100644
--- a/vl.c
+++ b/vl.c
@@ -735,6 +735,54 @@ void add_boot_device_path(int32_t bootindex, DeviceState *dev,
QTAILQ_INSERT_TAIL(&fw_boot_order, node, link);
}

+/*
+ * This function returns null terminated string that consist of new line
+ * separated device pathes.
+ *
+ * memory pointed by "size" is assigned total length of the array in bytes
+ *
+ */
+char *get_boot_devices_list(uint32_t *size)
+{
+ FWBootEntry *i;
+ uint32_t total = 0;
+ char *list = NULL;
+
+ QTAILQ_FOREACH(i, &fw_boot_order, link) {
+ char *devpath = NULL, *bootpath;
+ int len;
+
+ if (i->dev) {
+ devpath = qdev_get_fw_dev_path(i->dev);
+ assert(devpath);
+ }
+
+ if (i->suffix && devpath) {
+ bootpath = qemu_malloc(strlen(devpath) + strlen(i->suffix) + 1);
+ sprintf(bootpath, "%s%s", devpath, i->suffix);
+ qemu_free(devpath);
+ } else if (devpath) {
+ bootpath = devpath;
+ } else {
+ bootpath = strdup(i->suffix);
+ assert(bootpath);
+ }
+
+ if (total) {
+ list[total-1] = '\n';
+ }
+ len = strlen(bootpath) + 1;
+ list = qemu_realloc(list, total + len);
+ memcpy(&list[total], bootpath, len);
+ total += len;
+ qemu_free(bootpath);
+ }
+
+ *size = total;
+
+ return list;
+}
+
static void numa_add(const char *optarg)
{
char option[128];
--
1.7.2.3