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[OpenOCD-devel] [PATCH]: 351e4fb Expand target_run_flash_async_algorithm() doc comment.
gerrit
2017-05-08 22:32:58 UTC
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Girts Folkmanis (***@girts.me) just uploaded a new patch set to Gerrit, which you can find at http://openocd.zylin.com/4127

-- gerrit

commit 351e4fbc780232f6bcc527eb9da8ec0045cca90b
Author: Girts Folkmanis <***@girts.me>
Date: Mon May 8 15:31:31 2017 -0700

Expand target_run_flash_async_algorithm() doc comment.

Change-Id: I5d1e8401cbcf0e116a233a2839a06d2c9dbc85ce
Signed-off-by: Girts Folkmanis <***@girts.me>

diff --git a/src/target/target.c b/src/target/target.c
index e04ecc4..4e80381 100644
--- a/src/target/target.c
+++ b/src/target/target.c
@@ -884,12 +884,45 @@ done:
}

/**
- * Executes a target-specific native code algorithm in the target.
- * It differs from target_run_algorithm in that the algorithm is asynchronous.
- * Because of this it requires an compliant algorithm:
- * see contrib/loaders/flash/stm32f1x.S for example.
+ * Streams data to a circular buffer on target intended for consumption by code
+ * running asynchronously on target.
+ *
+ * This is intended for applications where target-specific native code runs
+ * on the target, receives data from the circular buffer, does something with
+ * it (most likely writing it to a flash memory), and advances the circular
+ * buffer pointer.
+ *
+ * This assumes that the helper algorithm has already been loaded to the target,
+ * but has not been started yet. Given memory and register parameters are passed
+ * to the algorithm.
+ *
+ * The buffer is defined by (buffer_start, buffer_size) arguments and has the
+ * following format:
+ *
+ * buffer_start + 0:
+ * Write Pointer address (aka head). Written and updated by this
+ * routine when new data is written to the circular buffer.
+ * buffer_start + 4:
+ * Read Pointer address (aka tail). Updated by code running on the
+ * target after it consumes data.
+ * buffer_start + 8 ... buffer_start + buffer_size:
+ * Circular buffer contents.
+ *
+ * See contrib/loaders/flash/stm32f1x.S for an example.
*
* @param target used to run the algorithm
+ * @param buffer address on the host where data to be sent is located
+ * @param count number of blocks to send
+ * @param block_size size in bytes of each block
+ * @param num_mem_params count of memory-based params to pass to algorithm
+ * @param mem_params memory-based params to pass to algorithm
+ * @param num_reg_params count of register-based params to pass to algorithm
+ * @param reg_params memory-based params to pass to algorithm
+ * @param buffer_start address on the target of the circular buffer structure
+ * @param buffer_size size of the circular buffer structure
+ * @param entry_point address on the target to execute to start the algorithm
+ * @param exit_point address at which to set a breakpoint to catch the
+ * end of the algorithm; can be 0 if target triggers a breakpoint itself
*/

int target_run_flash_async_algorithm(struct target *target,

--

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