[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH v6 2/5] softmmu/vl: Let -fw_cfg option take a 'blob_id' argument
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH v6 2/5] softmmu/vl: Let -fw_cfg option take a 'blob_id' argument |
Date: |
Tue, 19 May 2020 20:20:21 +0200 |
The 'blob_id' argument refers to a QOM object able to produce
data consumable by the fw_cfg device. The producer object must
implement the FW_CFG_DATA_GENERATOR interface.
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
softmmu/vl.c | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/softmmu/vl.c b/softmmu/vl.c
index ae5451bc23..f76c53ad2e 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -489,6 +489,10 @@ static QemuOptsList qemu_fw_cfg_opts = {
.name = "string",
.type = QEMU_OPT_STRING,
.help = "Sets content of the blob to be inserted from a string",
+ }, {
+ .name = "blob_id",
+ .type = QEMU_OPT_STRING,
+ .help = "Sets id of the object generating fw_cfg blob to be used",
},
{ /* end of list */ }
},
@@ -2020,7 +2024,7 @@ static int parse_fw_cfg(void *opaque, QemuOpts *opts,
Error **errp)
{
gchar *buf;
size_t size;
- const char *name, *file, *str;
+ const char *name, *file, *str, *blob_id;
FWCfgState *fw_cfg = (FWCfgState *) opaque;
if (fw_cfg == NULL) {
@@ -2030,14 +2034,17 @@ static int parse_fw_cfg(void *opaque, QemuOpts *opts,
Error **errp)
name = qemu_opt_get(opts, "name");
file = qemu_opt_get(opts, "file");
str = qemu_opt_get(opts, "string");
+ blob_id = qemu_opt_get(opts, "blob_id");
/* we need name and either a file or the content string */
- if (!(nonempty_str(name) && (nonempty_str(file) || nonempty_str(str)))) {
+ if (!(nonempty_str(name)
+ && (nonempty_str(file) || nonempty_str(str) ||
nonempty_str(blob_id)))
+ ) {
error_setg(errp, "invalid argument(s)");
return -1;
}
- if (nonempty_str(file) && nonempty_str(str)) {
- error_setg(errp, "file and string are mutually exclusive");
+ if (nonempty_str(file) && nonempty_str(str) && nonempty_str(blob_id)) {
+ error_setg(errp, "file, string and blob_id are mutually exclusive");
return -1;
}
if (strlen(name) > FW_CFG_MAX_FILE_PATH - 1) {
@@ -2052,6 +2059,8 @@ static int parse_fw_cfg(void *opaque, QemuOpts *opts,
Error **errp)
if (nonempty_str(str)) {
size = strlen(str); /* NUL terminator NOT included in fw_cfg blob */
buf = g_memdup(str, size);
+ } else if (nonempty_str(blob_id)) {
+ return fw_cfg_add_from_generator(fw_cfg, name, blob_id, errp);
} else {
GError *err = NULL;
if (!g_file_get_contents(file, &buf, &size, &err)) {
--
2.21.3