smp: replace commands smp_on/smp_off with "smp [on|off]"

Seams over-engineered having two separate commands to turn SMP
on/off. Plus it is missing the possibility to dump the current
status of SMP and would be weird adding an additional command
for it. Moreover, such commands are replicated in few targets so
it would make sense centralizing them.

- Deprecate the commands "smp_on" and "smp_off".
- Add a new command "smp" that accepts optional parameters
  "[on|off]" and prints the SMP status when run without
  parameters. This replaces the two commands above.
- Put the deprecated and the new command handlers in smp.c
- Update the documentation, except for mips_m4k, since it is not
  available yet.
- Promote the macro foreach_smp_target to global context and use
  it where possible.

Change-Id: Ia72841c1a3bd6edd4db4cc809046322f498617e6
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4615
Tested-by: jenkins
Reviewed-by: Graham Sanderson <graham.sanderson@gmail.com>
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>

1 files changed, 4 insertions, 52 deletions

diff --git a/src/target/aarch64.c b/src/target/aarch64.c
index 1fafcfd..ff68e3a 100644
--- a/src/target/aarch64.c
+++ b/src/target/aarch64.c
@@ -29,6 +29,7 @@
 #include "armv8_opcodes.h"
 #include "armv8_cache.h"
 #include "arm_semihosting.h"
+#include "smp.h"
 #include <helper/time_support.h>
 
 enum restart_mode {
@@ -63,9 +64,6 @@ static int aarch64_virt2phys(struct target *target,
 static int aarch64_read_cpu_memory(struct target *target,
 	uint64_t address, uint32_t size, uint32_t count, uint8_t *buffer);
 
-#define foreach_smp_target(pos, head) \
-	for (pos = head; (pos != NULL); pos = pos->next)
-
 static int aarch64_restore_system_control_reg(struct target *target)
 {
 	enum arm_mode target_mode = ARM_MODE_ANY;
@@ -2550,42 +2548,6 @@ COMMAND_HANDLER(aarch64_handle_dbginit_command)
 
 	return aarch64_init_debug_access(target);
 }
-COMMAND_HANDLER(aarch64_handle_smp_off_command)
-{
-	struct target *target = get_current_target(CMD_CTX);
-	/* check target is an smp target */
-	struct target_list *head;
-	struct target *curr;
-	head = target->head;
-	target->smp = 0;
-	if (head != (struct target_list *)NULL) {
-		while (head != (struct target_list *)NULL) {
-			curr = head->target;
-			curr->smp = 0;
-			head = head->next;
-		}
-		/*  fixes the target display to the debugger */
-		target->gdb_service->target = target;
-	}
-	return ERROR_OK;
-}
-
-COMMAND_HANDLER(aarch64_handle_smp_on_command)
-{
-	struct target *target = get_current_target(CMD_CTX);
-	struct target_list *head;
-	struct target *curr;
-	head = target->head;
-	if (head != (struct target_list *)NULL) {
-		target->smp = 1;
-		while (head != (struct target_list *)NULL) {
-			curr = head->target;
-			curr->smp = 1;
-			head = head->next;
-		}
-	}
-	return ERROR_OK;
-}
 
 COMMAND_HANDLER(aarch64_mask_interrupts_command)
 {
@@ -2767,19 +2729,6 @@ static const struct command_registration aarch64_exec_command_handlers[] = {
 		.help = "Initialize core debug",
 		.usage = "",
 	},
-	{	.name = "smp_off",
-		.handler = aarch64_handle_smp_off_command,
-		.mode = COMMAND_EXEC,
-		.help = "Stop smp handling",
-		.usage = "",
-	},
-	{
-		.name = "smp_on",
-		.handler = aarch64_handle_smp_on_command,
-		.mode = COMMAND_EXEC,
-		.help = "Restart smp handling",
-		.usage = "",
-	},
 	{
 		.name = "maskisr",
 		.handler = aarch64_mask_interrupts_command,
@@ -2801,6 +2750,9 @@ static const struct command_registration aarch64_exec_command_handlers[] = {
 		.help = "read coprocessor register",
 		.usage = "cpnum op1 CRn CRm op2",
 	},
+	{
+		.chain = smp_command_handlers,
+	},
 
 
 	COMMAND_REGISTRATION_DONE