[PATCH v2 11/15] fastboot/dfu: use system partitions as fall back
Ahmad Fatoum
a.fatoum at pengutronix.de
Fri Apr 30 14:29:45 BST 2021
Use the new system partitions infrastructure to have fastboot and DFU
fall back to using the same partitions if the global.usbgadget.dfu_function
and global.fastboot_partitions are not set, respectively.
No functional change intended for configurations that have
SYSTEM_PARTITIONS disabled.
Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
common/fastboot.c | 9 ++++--
common/usbgadget.c | 64 +++++++++++++++++++++-----------------
drivers/usb/gadget/multi.c | 12 +++++++
include/fastboot.h | 6 ++--
include/file-list.h | 5 +++
include/usb/gadget-multi.h | 1 +
net/fastboot.c | 4 +--
7 files changed, 64 insertions(+), 37 deletions(-)
diff --git a/common/fastboot.c b/common/fastboot.c
index c8576a8d97c3..dc80b66e6720 100644
--- a/common/fastboot.c
+++ b/common/fastboot.c
@@ -41,6 +41,7 @@
#include <linux/stat.h>
#include <linux/mtd/mtd.h>
#include <fastboot.h>
+#include <system-partitions.h>
#define FASTBOOT_VERSION "0.4"
@@ -932,9 +933,13 @@ bool get_fastboot_bbu(void)
return fastboot_bbu;
}
-const char *get_fastboot_partitions(void)
+struct file_list *get_fastboot_partitions(void)
{
- return fastboot_partitions;
+ if (fastboot_partitions && *fastboot_partitions)
+ return file_list_parse(fastboot_partitions);
+ if (!system_partitions_empty())
+ return system_partitions_get();
+ return NULL;
}
static int fastboot_globalvars_init(void)
diff --git a/common/usbgadget.c b/common/usbgadget.c
index 009debd93efc..bdbb4d794889 100644
--- a/common/usbgadget.c
+++ b/common/usbgadget.c
@@ -17,6 +17,7 @@
#include <usb/gadget-multi.h>
#include <globalvar.h>
#include <magicvar.h>
+#include <system-partitions.h>
static int autostart;
static int acm;
@@ -32,6 +33,15 @@ static struct file_list *parse(const char *files)
return list;
}
+static inline struct file_list *get_dfu_function(void)
+{
+ if (dfu_function && *dfu_function)
+ return file_list_parse(dfu_function);
+ if (!system_partitions_empty())
+ return system_partitions_get();
+ return NULL;
+}
+
int usbgadget_register(bool dfu, const char *dfu_opts,
bool fastboot, const char *fastboot_opts,
bool acm, bool export_bbu)
@@ -39,45 +49,37 @@ int usbgadget_register(bool dfu, const char *dfu_opts,
int ret;
struct device_d *dev;
struct f_multi_opts *opts;
- const char *fastboot_partitions = get_fastboot_partitions();
-
- if (dfu && !dfu_opts && dfu_function && *dfu_function)
- dfu_opts = dfu_function;
-
- if (IS_ENABLED(CONFIG_FASTBOOT_BASE) && fastboot && !fastboot_opts &&
- fastboot_partitions && *fastboot_partitions)
- fastboot_opts = fastboot_partitions;
-
- if (!dfu_opts && !fastboot_opts && !acm)
- return COMMAND_ERROR_USAGE;
-
- /*
- * Creating a gadget with both DFU and Fastboot may not work.
- * fastboot 1:8.1.0+r23-5 can deal with it, but dfu-util 0.9
- * seems to assume that the device only has a single configuration
- * That's not our fault though. Emit a warning and continue
- */
- if (fastboot_opts && dfu_opts)
- pr_warn("Both DFU and Fastboot enabled. dfu-util may not like this!\n");
opts = xzalloc(sizeof(*opts));
opts->release = usb_multi_opts_release;
- if (fastboot_opts) {
- opts->fastboot_opts.files = parse(fastboot_opts);
+ if (dfu)
+ opts->dfu_opts.files = dfu_opts ? parse(dfu_opts)
+ : get_dfu_function();
+
+ if (IS_ENABLED(CONFIG_FASTBOOT_BASE) && fastboot) {
+ opts->fastboot_opts.files = fastboot_opts ? parse(fastboot_opts)
+ : get_fastboot_partitions();
+
opts->fastboot_opts.export_bbu = export_bbu;
}
- if (dfu_opts)
- opts->dfu_opts.files = parse(dfu_opts);
+ opts->create_acm = acm;
- if (!opts->dfu_opts.files && !opts->fastboot_opts.files && !acm) {
+ if (usb_multi_count_functions(opts) == 0) {
pr_warn("No functions to register\n");
- free(opts);
- return 0;
+ ret = COMMAND_ERROR_USAGE;
+ goto err;
}
- opts->create_acm = acm;
+ /*
+ * Creating a gadget with both DFU and Fastboot may not work.
+ * fastboot 1:8.1.0+r23-5 can deal with it, but dfu-util 0.9
+ * seems to assume that the device only has a single configuration
+ * That's not our fault though. Emit a warning and continue
+ */
+ if (!file_list_empty(opts->fastboot_opts.files) && !file_list_empty(opts->dfu_opts.files))
+ pr_warn("Both DFU and Fastboot enabled. dfu-util may not like this!\n");
dev = get_device_by_name("otg");
if (dev)
@@ -85,7 +87,11 @@ int usbgadget_register(bool dfu, const char *dfu_opts,
ret = usb_multi_register(opts);
if (ret)
- usb_multi_opts_release(opts);
+ goto err;
+
+ return 0;
+err:
+ usb_multi_opts_release(opts);
return ret;
}
diff --git a/drivers/usb/gadget/multi.c b/drivers/usb/gadget/multi.c
index 95f5b90c88b5..3fb22486a0e9 100644
--- a/drivers/usb/gadget/multi.c
+++ b/drivers/usb/gadget/multi.c
@@ -266,6 +266,18 @@ void usb_multi_unregister(void)
gadget_multi_opts = NULL;
}
+unsigned usb_multi_count_functions(struct f_multi_opts *opts)
+{
+ unsigned count = 0;
+
+ count += !file_list_empty(opts->fastboot_opts.files) ||
+ opts->fastboot_opts.export_bbu;
+ count += !file_list_empty(opts->dfu_opts.files);
+ count += opts->create_acm;
+
+ return count;
+}
+
void usb_multi_opts_release(struct f_multi_opts *opts)
{
if (opts->fastboot_opts.files)
diff --git a/include/fastboot.h b/include/fastboot.h
index 2eab2dfe6ae8..cf8a177bf12c 100644
--- a/include/fastboot.h
+++ b/include/fastboot.h
@@ -58,16 +58,16 @@ enum fastboot_msg_type {
#ifdef CONFIG_FASTBOOT_BASE
bool get_fastboot_bbu(void);
-const char *get_fastboot_partitions(void);
+struct file_list *get_fastboot_partitions(void);
#else
static inline int get_fastboot_bbu(void)
{
return false;
}
-static inline const char *get_fastboot_partitions(void)
+static inline struct file_list *get_fastboot_partitions(void)
{
- return NULL;
+ return file_list_parse("");
}
#endif
diff --git a/include/file-list.h b/include/file-list.h
index 2538883c3659..be97a49b7a2b 100644
--- a/include/file-list.h
+++ b/include/file-list.h
@@ -35,4 +35,9 @@ struct file_list_entry *file_list_entry_by_name(struct file_list *files, const c
#define file_list_for_each_entry(files, entry) \
list_for_each_entry(entry, &files->list, list)
+static inline bool file_list_empty(struct file_list *files)
+{
+ return !files || !files->num_entries;
+}
+
#endif /* __FILE_LIST */
diff --git a/include/usb/gadget-multi.h b/include/usb/gadget-multi.h
index 9bb6c889f3e9..f30dae5686ae 100644
--- a/include/usb/gadget-multi.h
+++ b/include/usb/gadget-multi.h
@@ -15,6 +15,7 @@ struct f_multi_opts {
int usb_multi_register(struct f_multi_opts *opts);
void usb_multi_unregister(void);
void usb_multi_opts_release(struct f_multi_opts *opts);
+unsigned usb_multi_count_functions(struct f_multi_opts *opts);
int usbgadget_register(bool dfu, const char *dfu_opts,
bool fastboot, const char *fastboot_opts,
diff --git a/net/fastboot.c b/net/fastboot.c
index 9082aa48f6e1..df388adc8995 100644
--- a/net/fastboot.c
+++ b/net/fastboot.c
@@ -499,7 +499,6 @@ void fastboot_net_free(struct fastboot_net *fbn)
struct fastboot_net *fastboot_net_init(struct fastboot_opts *opts)
{
struct fastboot_net *fbn;
- const char *partitions = get_fastboot_partitions();
bool bbu = get_fastboot_bbu();
int ret;
@@ -513,8 +512,7 @@ struct fastboot_net *fastboot_net_init(struct fastboot_opts *opts)
fbn->fastboot.cmd_flash = opts->cmd_flash;
ret = fastboot_generic_init(&fbn->fastboot, opts->export_bbu);
} else {
- fbn->fastboot.files = file_list_parse(partitions ?
- partitions : "");
+ fbn->fastboot.files = get_fastboot_partitions() ?: file_list_parse("");
ret = fastboot_generic_init(&fbn->fastboot, bbu);
}
if (ret)
--
2.29.2
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