From: Christian Taedcke <christian.taed...@weidmueller.com>
This enables implementing custom logic after a bitstream was loaded
into the fpga.
Signed-off-by: Christian Taedcke <christian.taed...@weidmueller.com>
---
Changes in v3:
- replace #if with if
- remove previously added printf
- return notification error from fpga_load()
- fix static_assert checking event name list
Changes in v2:
- replace __weak function with a new event
common/event.c | 3 +++
drivers/fpga/fpga.c | 20 ++++++++++++++++++++
include/event.h | 16 ++++++++++++++++
3 files changed, 39 insertions(+)
diff --git a/common/event.c b/common/event.c
index 164c95f8f5..20720c5283 100644
--- a/common/event.c
+++ b/common/event.c
@@ -36,6 +36,9 @@ const char *const type_name[] = {
/* init hooks */
"misc_init_f",
+ /* Fpga load hook */
+ "fpga_load",
+
/* fdt hooks */
"ft_fixup",
diff --git a/drivers/fpga/fpga.c b/drivers/fpga/fpga.c
index 7f6b6bc73a..81e6d8ffc0 100644
--- a/drivers/fpga/fpga.c
+++ b/drivers/fpga/fpga.c
@@ -244,6 +244,21 @@ int fpga_loads(int devnum, const void *buf, size_t size,
}
#endif
+static int fpga_load_event_notify(const void *buf, size_t bsize, int result)
+{
+ if (CONFIG_IS_ENABLED(EVENT)) {
+ struct event_fpga_load load = {
+ .buf = buf,
+ .bsize = bsize,
+ .result = result
+ };
+
+ return event_notify(EVT_FPGA_LOAD, &load, sizeof(load));
+ }
+
+ return 0;
+}
+
/*
* Generic multiplexing code
*/
@@ -251,6 +266,7 @@ int fpga_load(int devnum, const void *buf, size_t bsize,
bitstream_type bstype,
int flags)
{
int ret_val = FPGA_FAIL; /* assume failure */
+ int ret_notify;
const fpga_desc *desc = fpga_validate(devnum, buf, bsize,
(char *)__func__);
@@ -284,6 +300,10 @@ int fpga_load(int devnum, const void *buf, size_t bsize,
bitstream_type bstype,
}
}
+ ret_notify = fpga_load_event_notify(buf, bsize, ret_val);
+ if (ret_notify)
+ return ret_notify;
+
return ret_val;
}
diff --git a/include/event.h b/include/event.h
index fe41080fa6..77124c2e73 100644
--- a/include/event.h
+++ b/include/event.h
@@ -31,6 +31,9 @@ enum event_t {
/* Init hooks */
EVT_MISC_INIT_F,
+ /* Fpga load hook */
+ EVT_FPGA_LOAD,
+
/* Device tree fixups before booting */
EVT_FT_FIXUP,
@@ -59,6 +62,19 @@ union event_data {
struct udevice *dev;
} dm;
+ /**
+ * struct event_fpga_load - fpga load event
+ *
+ * @buf: The buffer that was loaded into the fpga
+ * @bsize: The size of the buffer that was loaded into the fpga
+ * @result: Result of the load operation
+ */
+ struct event_fpga_load {
+ const void *buf;
+ size_t bsize;
+ int result;
+ } fpga_load;
+
/**
* struct event_ft_fixup - FDT fixup before booting
*
