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- slight mips32 cleanup/reformat
[openocd.git] / src / target / mips_m4k.c
diff --git a/src/target/mips_m4k.c b/src/target/mips_m4k.c
index 0db7a94bc5c8535f67d26b8386f6e569d712feda..c99ca92f61dd7905cc307bd779d6ce51555fb8b7 100644 (file)
--- a/src/target/mips_m4k.c
+++ b/src/target/mips_m4k.c
@@ -25,6 +25,7 @@
 
 #include "mips32.h"
 #include "mips_m4k.h"
+#include "mips32_dmaacc.h"
 #include "jtag.h"
 #include "log.h"
 
@@ -131,13 +132,14 @@ int mips_m4k_poll(target_t *target)
        int retval;
        mips32_common_t *mips32 = target->arch_info;
        mips_ejtag_t *ejtag_info = &mips32->ejtag_info;
+       u32 ejtag_ctrl = ejtag_info->ejtag_ctrl;
        
        /* read ejtag control reg */
        jtag_add_end_state(TAP_RTI);
        mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL);
-       mips_ejtag_drscan_32(ejtag_info, &ejtag_info->ejtag_ctrl);
+       mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
        
-       if (ejtag_info->ejtag_ctrl & EJTAG_CTRL_BRKST)
+       if (ejtag_ctrl & EJTAG_CTRL_BRKST)
        {
                if ((target->state == TARGET_RUNNING) || (target->state == TARGET_RESET))
                {
@@ -166,19 +168,19 @@ int mips_m4k_poll(target_t *target)
                target->state = TARGET_RUNNING;
        }
        
-       if (ejtag_info->ejtag_ctrl & EJTAG_CTRL_ROCC)
+       if (ejtag_ctrl & EJTAG_CTRL_ROCC)
        {
                /* we have detected a reset, clear flag
                 * otherwise ejtag will not work */
                jtag_add_end_state(TAP_RTI);
-               ejtag_info->ejtag_ctrl &= ~EJTAG_CTRL_ROCC;
+               ejtag_ctrl = ejtag_info->ejtag_ctrl & ~EJTAG_CTRL_ROCC;
                
                mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL);
-               mips_ejtag_drscan_32(ejtag_info, &ejtag_info->ejtag_ctrl);
+               mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
                LOG_DEBUG("Reset Detected");
        }
        
-//     LOG_DEBUG("ctrl=0x%08X", ejtag_info->ejtag_ctrl);
+//     LOG_DEBUG("ctrl=0x%08X", ejtag_ctrl);
        
        return ERROR_OK;
 }
@@ -234,7 +236,7 @@ int mips_m4k_assert_reset(target_t *target)
        mips_ejtag_t *ejtag_info = &mips32->ejtag_info;
        
        LOG_DEBUG("target->state: %s", 
-                 Jim_Nvp_value2name_simple( nvp_target_state, target->state )->name);
+               Jim_Nvp_value2name_simple( nvp_target_state, target->state )->name);
        
        if (!(jtag_reset_config & RESET_HAS_SRST))
        {
@@ -254,14 +256,24 @@ int mips_m4k_assert_reset(target_t *target)
                mips_ejtag_set_instr(ejtag_info, EJTAG_INST_NORMALBOOT, NULL);
        }
        
-       /* here we should issue a srst only, but we may have to assert trst as well */
-       if (jtag_reset_config & RESET_SRST_PULLS_TRST)
+       if (strcmp(target->variant, "ejtag_srst") == 0)
        {
-               jtag_add_reset(1, 1);
+               u32 ejtag_ctrl = ejtag_info->ejtag_ctrl | EJTAG_CTRL_PRRST | EJTAG_CTRL_PERRST;
+               LOG_DEBUG("Using EJTAG reset (PRRST) to reset processor...");
+               mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL);
+               mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
        }
        else
        {
-               jtag_add_reset(0, 1);
+               /* here we should issue a srst only, but we may have to assert trst as well */
+               if (jtag_reset_config & RESET_SRST_PULLS_TRST)
+               {
+                       jtag_add_reset(1, 1);
+               }
+               else
+               {
+                       jtag_add_reset(0, 1);
+               }
        }
        
        target->state = TARGET_RESET;
@@ -269,12 +281,12 @@ int mips_m4k_assert_reset(target_t *target)
 
        mips32_invalidate_core_regs(target);
 
-    if (target->reset_halt)
-    {
-       int retval;
+       if (target->reset_halt)
+       {
+               int retval;
                if ((retval = target_halt(target))!=ERROR_OK)
                        return retval;
-    }
+       }
        
        
        return ERROR_OK;
@@ -283,7 +295,7 @@ int mips_m4k_assert_reset(target_t *target)
 int mips_m4k_deassert_reset(target_t *target)
 {
        LOG_DEBUG("target->state: %s", 
-                 Jim_Nvp_value2name_simple( nvp_target_state, target->state )->name);
+               Jim_Nvp_value2name_simple( nvp_target_state, target->state )->name);
        
        /* deassert reset lines */
        jtag_add_reset(0, 0);
@@ -318,7 +330,7 @@ int mips_m4k_resume(struct target_s *target, int current, u32 address, int handl
        }
        
        /* current = 1: continue on current pc, otherwise continue at <address> */
-       if (!current) 
+       if (!current)
        {
                buf_set_u32(mips32->core_cache->reg_list[MIPS32_PC].value, 0, 32, address);
                mips32->core_cache->reg_list[MIPS32_PC].dirty = 1;
@@ -512,7 +524,11 @@ int mips_m4k_read_memory(struct target_s *target, u32 address, u32 size, u32 cou
                case 4:
                case 2:
                case 1:
-                       return mips32_pracc_read_mem(ejtag_info, address, size, count, (void *)buffer);
+                       /* if noDMA off, use DMAACC mode for memory read */
+                       if(ejtag_info->impcode & EJTAG_IMP_NODMA)
+                               return mips32_pracc_read_mem(ejtag_info, address, size, count, (void *)buffer);
+                       else
+                               return mips32_dmaacc_read_mem(ejtag_info, address, size, count, (void *)buffer);
                default:
                        LOG_ERROR("BUG: we shouldn't get here");
                        exit(-1);
@@ -547,7 +563,11 @@ int mips_m4k_write_memory(struct target_s *target, u32 address, u32 size, u32 co
                case 4:
                case 2:
                case 1:
-                       mips32_pracc_write_mem(ejtag_info, address, size, count, (void *)buffer);
+                       /* if noDMA off, use DMAACC mode for memory write */
+                       if(ejtag_info->impcode & EJTAG_IMP_NODMA)
+                               mips32_pracc_write_mem(ejtag_info, address, size, count, (void *)buffer);
+                       else
+                               mips32_dmaacc_write_mem(ejtag_info, address, size, count, (void *)buffer);
                        break;
                default:
                        LOG_ERROR("BUG: we shouldn't get here");
@@ -596,7 +616,7 @@ int mips_m4k_init_arch_info(target_t *target, mips_m4k_common_t *mips_m4k, int c
        /* initialize mips4k specific info */
        mips32_init_arch_info(target, mips32, chain_pos, variant);
        mips32->arch_info = mips_m4k;
-               
+       
        return ERROR_OK;
 }
 
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