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target: Add TARGET_UNAVAILABLE state

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This is added for future RISC-V changes. The RISC-V debug interface can
explicitly tell a debugger when a hart is unavailable. This is used for
instance when that hart is powered down (or yet to be powered up out of
reset).

Imported from
https://github.com/riscv-collab/riscv-openocd/pull/752

Change-Id: I8a062d59eea1e5b3c788281a75159592db024683
Signed-off-by: Tim Newsome <tim@sifive.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/8911
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-by: Bernhard Rosenkränzer <bero@baylibre.com>
This commit is contained in:
Tim Newsome
2022-10-27 15:21:31 -07:00
committed by Antonio Borneo
parent 4fe57a0c19
commit 92287c1a2a
2 changed files with 4 additions and 0 deletions
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1
src/target/target.c
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@@ -220,6 +220,7 @@ static const struct nvp nvp_target_state[] = {
{ .name = "halted", .value = TARGET_HALTED }, { .name = "halted", .value = TARGET_HALTED },
{ .name = "reset", .value = TARGET_RESET }, { .name = "reset", .value = TARGET_RESET },
{ .name = "debug-running", .value = TARGET_DEBUG_RUNNING }, { .name = "debug-running", .value = TARGET_DEBUG_RUNNING },
{ .name = "unavailable", .value = TARGET_UNAVAILABLE },
{ .name = NULL, .value = -1 }, { .name = NULL, .value = -1 },
}; };

3
src/target/target.h
View File

@@ -46,6 +46,8 @@ struct gdb_fileio_info;
* not sure how this is used with all the recent changes) * not sure how this is used with all the recent changes)
* TARGET_DEBUG_RUNNING = 4: the target is running, but it is executing code on * TARGET_DEBUG_RUNNING = 4: the target is running, but it is executing code on
* behalf of the debugger (e.g. algorithm for flashing) * behalf of the debugger (e.g. algorithm for flashing)
* TARGET_UNAVAILABLE = 5: The target is unavailable for some reason. It might
* be powered down, for instance.
* *
* also see: target_state_name(); * also see: target_state_name();
*/ */
@@ -56,6 +58,7 @@ enum target_state {
TARGET_HALTED = 2, TARGET_HALTED = 2,
TARGET_RESET = 3, TARGET_RESET = 3,
TARGET_DEBUG_RUNNING = 4, TARGET_DEBUG_RUNNING = 4,
TARGET_UNAVAILABLE = 5
}; };
enum target_reset_mode { enum target_reset_mode {