improve DCC bulk write performance by using jtag_add_shift() + tweaked embedded ICE...

git-svn-id: svn://svn.berlios.de/openocd/trunk@416 b42882b7-edfa-0310-969c-e2dbd0fdcd60

diff --git a/src/target/arm7_9_common.c b/src/target/arm7_9_common.c
index dd713b9b9f4b0aaa012f2c294b1f9077e967344a..3c995a2355ee5288ea12c5461a8ffbfce7678a82 100644 (file)
--- a/src/target/arm7_9_common.c
+++ b/src/target/arm7_9_common.c
@@ -2164,11 +2164,28 @@ int arm7_9_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buffe
        armv4_5->core_state = ARMV4_5_STATE_ARM;
 
        arm7_9_resume(target, 0, arm7_9->dcc_working_area->address, 1, 1);
-       
-       for (i = 0; i < count; i++)
+
+       int little=target->endianness==TARGET_LITTLE_ENDIAN;
+       if (count>2)
+       {
+               /* Handle first & last using standard embeddedice_write_reg and the middle ones w/the
+                  core function repeated. 
+                */
+               embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_COMMS_DATA], fast_target_buffer_get_u32(buffer, little));
+               buffer+=4;
+               for (i = 1; i < count - 1; i++)
+               {
+                       embeddedice_write_reg_inner(&arm7_9->eice_cache->reg_list[EICE_COMMS_DATA], fast_target_buffer_get_u32(buffer, little));
+                       buffer += 4;
+               }
+               embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_COMMS_DATA], fast_target_buffer_get_u32(buffer, little));
+       } else
        {
-               embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_COMMS_DATA], target_buffer_get_u32(target, buffer));
-               buffer += 4;
+               for (i = 0; i < count; i++)
+               {
+                       embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_COMMS_DATA], fast_target_buffer_get_u32(buffer, little));
+                       buffer += 4;
+               }
        }
        
        target->type->halt(target);