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hw/loongarch/virt: Allow user to customize OEM ID and OEM table ID

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On LoongArch virt machine, the default OEM ID and OEM table ID is
"BOCHS " and "BXPC    ". Here property x-oem-id and x-oem-table-id
is added on virt machine to set customized OEM ID and OEM table ID.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
This commit is contained in:
Bibo Mao
2025-05-06 09:17:32 +08:00
parent d0897c6970
commit 445c9c645b
1 changed files with 58 additions and 0 deletions
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hw/loongarch/virt.c
+58
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@@ -773,6 +773,48 @@ static void virt_set_acpi(Object *obj, Visitor *v, const char *name,
visit_type_OnOffAuto(v, name, &lvms->acpi, errp);
}
static char *virt_get_oem_id(Object *obj, Error **errp)
{
LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj);
return g_strdup(lvms->oem_id);
}
static void virt_set_oem_id(Object *obj, const char *value, Error **errp)
{
LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj);
size_t len = strlen(value);
if (len > 6) {
error_setg(errp,
"User specified oem-id value is bigger than 6 bytes in size");
return;
}
strncpy(lvms->oem_id, value, 6);
}
static char *virt_get_oem_table_id(Object *obj, Error **errp)
{
LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj);
return g_strdup(lvms->oem_table_id);
}
static void virt_set_oem_table_id(Object *obj, const char *value,
Error **errp)
{
LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj);
size_t len = strlen(value);
if (len > 8) {
error_setg(errp,
"User specified oem-table-id value is bigger than 8 bytes in size");
return;
}
strncpy(lvms->oem_table_id, value, 8);
}
static void virt_initfn(Object *obj)
{
LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj);
@@ -1177,6 +1219,22 @@ static void virt_class_init(ObjectClass *oc, const void *data)
#ifdef CONFIG_TPM
machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS);
#endif
object_class_property_add_str(oc, "x-oem-id",
virt_get_oem_id,
virt_set_oem_id);
object_class_property_set_description(oc, "x-oem-id",
"Override the default value of field OEMID "
"in ACPI table header."
"The string may be up to 6 bytes in size");
object_class_property_add_str(oc, "x-oem-table-id",
virt_get_oem_table_id,
virt_set_oem_table_id);
object_class_property_set_description(oc, "x-oem-table-id",
"Override the default value of field OEM Table ID "
"in ACPI table header."
"The string may be up to 8 bytes in size");
}
static const TypeInfo virt_machine_types[] = {