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- fix incorrect svn props from last commit
[openocd.git] / src / target / mips32_pracc.c
diff --git a/src/target/mips32_pracc.c b/src/target/mips32_pracc.c
index 5f8b0cee5bcc6c1708a30d6a26b96bdf9f9b0183..d641956d113d1b6d4ff792f39a5f2f287dcad7d4 100644 (file)
--- a/src/target/mips32_pracc.c
+++ b/src/target/mips32_pracc.c
@@ -47,7 +47,7 @@ static int wait_for_pracc_rw(mips_ejtag_t *ejtag_info, u32 *ctrl)
        while (1) 
        {
                mips_ejtag_set_instr(ejtag_info, EJTAG_INST_CONTROL, NULL);
-               ejtag_ctrl = EJTAG_CTRL_ROCC | EJTAG_CTRL_PRACC | EJTAG_CTRL_PROBEN | EJTAG_CTRL_SETDEV;
+               ejtag_ctrl = ejtag_info->ejtag_ctrl;
                mips_ejtag_drscan_32(ejtag_info, &ejtag_ctrl);
                if (ejtag_ctrl & EJTAG_CTRL_PRACC)
                        break;
@@ -61,8 +61,9 @@ static int wait_for_pracc_rw(mips_ejtag_t *ejtag_info, u32 *ctrl)
 
 static int mips32_pracc_exec_read(mips32_pracc_context *ctx, u32 address)
 {
+       mips_ejtag_t *ejtag_info = ctx->ejtag_info;
        int offset;
-       u32 ctrl, data;
+       u32 ejtag_ctrl, data;
 
        if ((address >= MIPS32_PRACC_PARAM_IN)
                && (address <= MIPS32_PRACC_PARAM_IN + ctx->num_iparam * 4))
@@ -102,25 +103,26 @@ static int mips32_pracc_exec_read(mips32_pracc_context *ctx, u32 address)
        mips_ejtag_drscan_32(ctx->ejtag_info, &data);
 
        /* Clear the access pending bit (let the processor eat!) */
-       ctrl = EJTAG_CTRL_ROCC | EJTAG_CTRL_PROBEN | EJTAG_CTRL_SETDEV;
+       ejtag_ctrl = ejtag_info->ejtag_ctrl & ~EJTAG_CTRL_PRACC;
        mips_ejtag_set_instr(ctx->ejtag_info, EJTAG_INST_CONTROL, NULL);
-       mips_ejtag_drscan_32(ctx->ejtag_info, &ctrl);
+       mips_ejtag_drscan_32(ctx->ejtag_info, &ejtag_ctrl);
        
        return ERROR_OK;
 }
 
 static int mips32_pracc_exec_write(mips32_pracc_context *ctx, u32 address)
 {
-       u32 ctrl,data;
+       u32 ejtag_ctrl,data;
        int offset;
+       mips_ejtag_t *ejtag_info = ctx->ejtag_info;
        
        mips_ejtag_set_instr(ctx->ejtag_info, EJTAG_INST_DATA, NULL);
        mips_ejtag_drscan_32(ctx->ejtag_info, &data);
        
        /* Clear access pending bit */
-       ctrl = EJTAG_CTRL_ROCC | EJTAG_CTRL_PROBEN | EJTAG_CTRL_SETDEV;
+       ejtag_ctrl = ejtag_info->ejtag_ctrl & ~EJTAG_CTRL_PRACC;
        mips_ejtag_set_instr(ctx->ejtag_info, EJTAG_INST_CONTROL, NULL);
-       mips_ejtag_drscan_32(ctx->ejtag_info, &ctrl);
+       mips_ejtag_drscan_32(ctx->ejtag_info, &ejtag_ctrl);
        
        if ((address >= MIPS32_PRACC_PARAM_IN)
                && (address <= MIPS32_PRACC_PARAM_IN + ctx->num_iparam * 4))
@@ -150,7 +152,7 @@ static int mips32_pracc_exec_write(mips32_pracc_context *ctx, u32 address)
 
 int mips32_pracc_exec( mips_ejtag_t *ejtag_info, int code_len, u32 *code, int num_param_in, u32 *param_in, int num_param_out, u32 *param_out, int cycle)
 {
-       u32 ctrl;
+       u32 ejtag_ctrl;
        u32 address, data;
        mips32_pracc_context ctx;
        int retval;
@@ -167,7 +169,7 @@ int mips32_pracc_exec( mips_ejtag_t *ejtag_info, int code_len, u32 *code, int nu
        
        while (1)
        {
-               if ((retval = wait_for_pracc_rw(ejtag_info, &ctrl)) != ERROR_OK)
+               if ((retval = wait_for_pracc_rw(ejtag_info, &ejtag_ctrl)) != ERROR_OK)
                        return retval;
                
                address = data = 0;
@@ -175,7 +177,7 @@ int mips32_pracc_exec( mips_ejtag_t *ejtag_info, int code_len, u32 *code, int nu
                mips_ejtag_drscan_32(ejtag_info, &address);
                
                /* Check for read or write */
-               if (ctrl & EJTAG_CTRL_PRNW)
+               if (ejtag_ctrl & EJTAG_CTRL_PRNW)
                {
                        if ((retval = mips32_pracc_exec_write(&ctx, address)) != ERROR_OK)
                                return retval;
@@ -232,7 +234,7 @@ int mips32_pracc_read_mem32(mips_ejtag_t *ejtag_info, u32 addr, int count, u32 *
                MIPS32_SW(8,0,15),                                                                      /* sw $8,($15) */
                MIPS32_SW(9,0,15),                                                                      /* sw $9,($15) */
                MIPS32_SW(10,0,15),                                                             /* sw $10,($15) */
-               MIPS32_SW(11,0,15),                                                             /* sw $10,($15) */
+               MIPS32_SW(11,0,15),                                                             /* sw $11,($15) */
                        
                MIPS32_LUI(8,UPPER16(MIPS32_PRACC_PARAM_IN)),           /* $8 = MIPS32_PRACC_PARAM_IN */
                MIPS32_ORI(8,8,LOWER16(MIPS32_PRACC_PARAM_IN)),
@@ -256,17 +258,17 @@ int mips32_pracc_read_mem32(mips_ejtag_t *ejtag_info, u32 addr, int count, u32 *
                MIPS32_B(NEG16(9)),                                                                     /* b loop */
                MIPS32_NOP,
                                                                                                                        /* end: */
-               MIPS32_LW(11,0,15),                                                             /* sw $11,($15) */
-               MIPS32_LW(10,0,15),                                                             /* sw $10,($15) */
-               MIPS32_LW(9,0,15),                                                                      /* sw $9,($15) */
-               MIPS32_LW(8,0,15),                                                                      /* sw $8,($15) */
+               MIPS32_LW(11,0,15),                                                             /* lw $11,($15) */
+               MIPS32_LW(10,0,15),                                                             /* lw $10,($15) */
+               MIPS32_LW(9,0,15),                                                                      /* lw $9,($15) */
+               MIPS32_LW(8,0,15),                                                                      /* lw $8,($15) */
                MIPS32_MFC0(15,31,0),                                                           /* move COP0 DeSave to $15 */
                MIPS32_NOP,
                MIPS32_B(NEG16(31)),                                                            /* b start */
                MIPS32_NOP,
        };
        
-       int retval=ERROR_OK;
+       int retval = ERROR_OK;
        int blocksize;
        int bytesread;
        u32 param_in[2];
@@ -306,7 +308,7 @@ int mips32_pracc_read_mem16(mips_ejtag_t *ejtag_info, u32 addr, int count, u16 *
                MIPS32_SW(8,0,15),                                                                      /* sw $8,($15) */
                MIPS32_SW(9,0,15),                                                                      /* sw $9,($15) */
                MIPS32_SW(10,0,15),                                                             /* sw $10,($15) */
-               MIPS32_SW(11,0,15),                                                             /* sw $10,($15) */
+               MIPS32_SW(11,0,15),                                                             /* sw $11,($15) */
                        
                MIPS32_LUI(8,UPPER16(MIPS32_PRACC_PARAM_IN)),           /* $8 = MIPS32_PRACC_PARAM_IN */
                MIPS32_ORI(8,8,LOWER16(MIPS32_PRACC_PARAM_IN)),
@@ -329,10 +331,10 @@ int mips32_pracc_read_mem16(mips_ejtag_t *ejtag_info, u32 addr, int count, u16 *
                MIPS32_B(NEG16(9)),                                                                     /* b loop */
                MIPS32_NOP,
 
-               MIPS32_LW(11,0,15),                                                             /* sw $11,($15) */
-               MIPS32_LW(10,0,15),                                                             /* sw $10,($15) */
-               MIPS32_LW(9,0,15),                                                                      /* sw $9,($15) */
-               MIPS32_LW(8,0,15),                                                                      /* sw $8,($15) */
+               MIPS32_LW(11,0,15),                                                             /* lw $11,($15) */
+               MIPS32_LW(10,0,15),                                                             /* lw $10,($15) */
+               MIPS32_LW(9,0,15),                                                                      /* lw $9,($15) */
+               MIPS32_LW(8,0,15),                                                                      /* lw $8,($15) */
                MIPS32_MFC0(15,31,0),                                                           /* move COP0 DeSave to $15 */
                MIPS32_NOP,
                MIPS32_B(NEG16(31)),                                                            /* b start */
@@ -385,7 +387,7 @@ int mips32_pracc_read_mem8(mips_ejtag_t *ejtag_info, u32 addr, int count, u8 *bu
                MIPS32_SW(8,0,15),                                                                      /* sw $8,($15) */
                MIPS32_SW(9,0,15),                                                                      /* sw $9,($15) */
                MIPS32_SW(10,0,15),                                                             /* sw $10,($15) */
-               MIPS32_SW(11,0,15),                                                             /* sw $10,($15) */
+               MIPS32_SW(11,0,15),                                                             /* sw $11,($15) */
                        
                MIPS32_LUI(8,UPPER16(MIPS32_PRACC_PARAM_IN)),           /* $8 = MIPS32_PRACC_PARAM_IN */
                MIPS32_ORI(8,8,LOWER16(MIPS32_PRACC_PARAM_IN)),
@@ -408,10 +410,10 @@ int mips32_pracc_read_mem8(mips_ejtag_t *ejtag_info, u32 addr, int count, u8 *bu
                MIPS32_B(NEG16(9)),                                                                     /* b loop */
                MIPS32_NOP,
                                                                                                                        /* end: */
-               MIPS32_LW(11,0,15),                                                             /* sw $11,($15) */
-               MIPS32_LW(10,0,15),                                                             /* sw $10,($15) */
-               MIPS32_LW(9,0,15),                                                                      /* sw $9,($15) */
-               MIPS32_LW(8,0,15),                                                                      /* sw $8,($15) */
+               MIPS32_LW(11,0,15),                                                             /* lw $11,($15) */
+               MIPS32_LW(10,0,15),                                                             /* lw $10,($15) */
+               MIPS32_LW(9,0,15),                                                                      /* lw $9,($15) */
+               MIPS32_LW(8,0,15),                                                                      /* lw $8,($15) */
                MIPS32_MFC0(15,31,0),                                                           /* move COP0 DeSave to $15 */
                MIPS32_NOP,
                MIPS32_B(NEG16(31)),                                                            /* b start */
@@ -479,7 +481,7 @@ int mips32_pracc_write_mem32(mips_ejtag_t *ejtag_info, u32 addr, int count, u32
                MIPS32_SW(8,0,15),                                                                      /* sw $8,($15) */
                MIPS32_SW(9,0,15),                                                                      /* sw $9,($15) */
                MIPS32_SW(10,0,15),                                                             /* sw $10,($15) */
-               MIPS32_SW(11,0,15),                                                             /* sw $10,($15) */
+               MIPS32_SW(11,0,15),                                                             /* sw $11,($15) */
                
                MIPS32_LUI(8,UPPER16(MIPS32_PRACC_PARAM_IN)),           /* $8 = MIPS32_PRACC_PARAM_IN */
                MIPS32_ORI(8,8,LOWER16(MIPS32_PRACC_PARAM_IN)),
@@ -501,10 +503,10 @@ int mips32_pracc_write_mem32(mips_ejtag_t *ejtag_info, u32 addr, int count, u32
                MIPS32_B(NEG16(9)),                                                                     /* b loop */
                MIPS32_NOP,
                                                                                                                        /* end: */
-               MIPS32_LW(11,0,15),                                                             /* sw $11,($15) */
-               MIPS32_LW(10,0,15),                                                             /* sw $10,($15) */
-               MIPS32_LW(9,0,15),                                                                      /* sw $9,($15) */
-               MIPS32_LW(8,0,15),                                                                      /* sw $8,($15) */
+               MIPS32_LW(11,0,15),                                                             /* lw $11,($15) */
+               MIPS32_LW(10,0,15),                                                             /* lw $10,($15) */
+               MIPS32_LW(9,0,15),                                                                      /* lw $9,($15) */
+               MIPS32_LW(8,0,15),                                                                      /* lw $8,($15) */
                MIPS32_MFC0(15,31,0),                                                           /* move COP0 DeSave to $15 */
                MIPS32_NOP,
                MIPS32_B(NEG16(30)),                                                            /* b start */
@@ -534,7 +536,7 @@ int mips32_pracc_write_mem16(mips_ejtag_t *ejtag_info, u32 addr, int count, u16
                MIPS32_SW(8,0,15),                                                                      /* sw $8,($15) */
                MIPS32_SW(9,0,15),                                                                      /* sw $9,($15) */
                MIPS32_SW(10,0,15),                                                             /* sw $10,($15) */
-               MIPS32_SW(11,0,15),                                                             /* sw $10,($15) */
+               MIPS32_SW(11,0,15),                                                             /* sw $11,($15) */
                
                MIPS32_LUI(8,UPPER16(MIPS32_PRACC_PARAM_IN)),           /* $8 = MIPS32_PRACC_PARAM_IN */
                MIPS32_ORI(8,8,LOWER16(MIPS32_PRACC_PARAM_IN)),
@@ -557,10 +559,10 @@ int mips32_pracc_write_mem16(mips_ejtag_t *ejtag_info, u32 addr, int count, u16
                MIPS32_B(NEG16(9)),                                                                     /* b loop */
                MIPS32_NOP,
                                                                                                                        /* end: */
-               MIPS32_LW(11,0,15),                                                             /* sw $11,($15) */
-               MIPS32_LW(10,0,15),                                                             /* sw $10,($15) */
-               MIPS32_LW(9,0,15),                                                                      /* sw $9,($15) */
-               MIPS32_LW(8,0,15),                                                                      /* sw $8,($15) */
+               MIPS32_LW(11,0,15),                                                             /* lw $11,($15) */
+               MIPS32_LW(10,0,15),                                                             /* lw $10,($15) */
+               MIPS32_LW(9,0,15),                                                                      /* lw $9,($15) */
+               MIPS32_LW(8,0,15),                                                                      /* lw $8,($15) */
                MIPS32_MFC0(15,31,0),                                                           /* move COP0 DeSave to $15 */
                MIPS32_NOP,
                MIPS32_B(NEG16(30)),                                                            /* b start */
@@ -594,7 +596,7 @@ int mips32_pracc_write_mem8(mips_ejtag_t *ejtag_info, u32 addr, int count, u8 *b
                MIPS32_SW(8,0,15),                                                                      /* sw $8,($15) */
                MIPS32_SW(9,0,15),                                                                      /* sw $9,($15) */
                MIPS32_SW(10,0,15),                                                             /* sw $10,($15) */
-               MIPS32_SW(11,0,15),                                                             /* sw $10,($15) */
+               MIPS32_SW(11,0,15),                                                             /* sw $11,($15) */
                
                MIPS32_LUI(8,UPPER16(MIPS32_PRACC_PARAM_IN)),           /* $8 = MIPS32_PRACC_PARAM_IN */
                MIPS32_ORI(8,8,LOWER16(MIPS32_PRACC_PARAM_IN)),
@@ -617,10 +619,10 @@ int mips32_pracc_write_mem8(mips_ejtag_t *ejtag_info, u32 addr, int count, u8 *b
                MIPS32_B(NEG16(9)),                                                                     /* b loop */
                MIPS32_NOP,
                                                                                                                        /* end: */
-               MIPS32_LW(11,0,15),                                                             /* sw $11,($15) */
-               MIPS32_LW(10,0,15),                                                             /* sw $10,($15) */
-               MIPS32_LW(9,0,15),                                                                      /* sw $9,($15) */
-               MIPS32_LW(8,0,15),                                                                      /* sw $8,($15) */
+               MIPS32_LW(11,0,15),                                                             /* lw $11,($15) */
+               MIPS32_LW(10,0,15),                                                             /* lw $10,($15) */
+               MIPS32_LW(9,0,15),                                                                      /* lw $9,($15) */
+               MIPS32_LW(8,0,15),                                                                      /* lw $8,($15) */
                MIPS32_MFC0(15,31,0),                                                           /* move COP0 DeSave to $15 */
                MIPS32_NOP,
                MIPS32_B(NEG16(30)),                                                            /* b start */
@@ -647,21 +649,18 @@ int mips32_pracc_write_mem8(mips_ejtag_t *ejtag_info, u32 addr, int count, u8 *b
 
 int mips32_pracc_write_regs(mips_ejtag_t *ejtag_info, u32 *regs)
 {
-       /* TODO restore all core registers */
-       
        u32 code[] = {
                                                                                                                /* start: */
-               MIPS32_MTC0(2,31,0),                                                    /* move $2 to COP0 DeSave */
                MIPS32_LUI(2,UPPER16(MIPS32_PRACC_PARAM_IN)),   /* $2 = MIPS32_PRACC_PARAM_IN */
                MIPS32_ORI(2,2,LOWER16(MIPS32_PRACC_PARAM_IN)),
-               /*MIPS32_LW(0,0*4,2),*/                                                 /* lw $0,0*4($2) */
                MIPS32_LW(1,1*4,2),                                                     /* lw $1,1*4($2) */
-               MIPS32_MFC0(2,31,0),                                                    /* move COP0 DeSave to $2 */
-               
-               MIPS32_MTC0(1,31,0),                                                    /* move $1 to COP0 DeSave */
+               MIPS32_LW(15,15*4,2),                                                   /* lw $15,15*4($2) */
+               MIPS32_MTC0(15,31,0),                                                   /* move $15 to COP0 DeSave */
+               MIPS32_LUI(15,UPPER16(MIPS32_PRACC_STACK)),     /* $15 = MIPS32_PRACC_STACK */
+               MIPS32_ORI(15,15,LOWER16(MIPS32_PRACC_STACK)),
+               MIPS32_SW(1,0,15),                                                              /* sw $1,($15) */
                MIPS32_LUI(1,UPPER16(MIPS32_PRACC_PARAM_IN)),   /* $1 = MIPS32_PRACC_PARAM_IN */
                MIPS32_ORI(1,1,LOWER16(MIPS32_PRACC_PARAM_IN)),
-               MIPS32_LW(2,2*4,1),                                                     /* lw $2,2*4($1) */
                MIPS32_LW(3,3*4,1),                                                     /* lw $3,3*4($1) */
                MIPS32_LW(4,4*4,1),                                                     /* lw $4,4*4($1) */
                MIPS32_LW(5,5*4,1),                                                     /* lw $5,5*4($1) */
@@ -674,7 +673,6 @@ int mips32_pracc_write_regs(mips_ejtag_t *ejtag_info, u32 *regs)
                MIPS32_LW(12,12*4,1),                                                   /* lw $12,12*4($1) */
                MIPS32_LW(13,13*4,1),                                                   /* lw $13,13*4($1) */
                MIPS32_LW(14,14*4,1),                                                   /* lw $14,14*4($1) */
-               MIPS32_LW(15,15*4,1),                                                   /* lw $15,15*4($1) */
                MIPS32_LW(16,16*4,1),                                                   /* lw $16,16*4($1) */
                MIPS32_LW(17,17*4,1),                                                   /* lw $17,17*4($1) */
                MIPS32_LW(18,18*4,1),                                                   /* lw $18,18*4($1) */
@@ -692,16 +690,31 @@ int mips32_pracc_write_regs(mips_ejtag_t *ejtag_info, u32 *regs)
                MIPS32_LW(30,30*4,1),                                                   /* lw $30,30*4($1) */
                MIPS32_LW(31,31*4,1),                                                   /* lw $31,31*4($1) */
                
-               MIPS32_MFC0(1,31,0),                                                    /* move COP0 DeSave to $1 */
+               MIPS32_LW(2,32*4,1),                                                    /* lw $2,32*4($1) */
+               MIPS32_MTC0(2,12,0),                                                    /* move $2 to status */
+               MIPS32_LW(2,33*4,1),                                                    /* lw $2,33*4($1) */
+               MIPS32_MTLO(2),                                                                 /* move $2 to lo */
+               MIPS32_LW(2,34*4,1),                                                    /* lw $2,34*4($1) */
+               MIPS32_MTHI(2),                                                                 /* move $2 to hi */
+               MIPS32_LW(2,35*4,1),                                                    /* lw $2,35*4($1) */
+               MIPS32_MTC0(2,8,0),                                                             /* move $2 to badvaddr */
+               MIPS32_LW(2,36*4,1),                                                    /* lw $2,36*4($1) */
+               MIPS32_MTC0(2,13,0),                                                    /* move $2 to cause*/
+               MIPS32_LW(2,37*4,1),                                                    /* lw $2,37*4($1) */
+               MIPS32_MTC0(2,24,0),                                                    /* move $2 to pc */
+               
+               MIPS32_LW(2,2*4,1),                                                     /* lw $2,2*4($1) */
+               MIPS32_LW(1,0,15),                                                              /* lw $1,($15) */
+               MIPS32_MFC0(15,31,0),                                                   /* move COP0 DeSave to $15 */
                MIPS32_NOP,
-               MIPS32_B(NEG16(41)),                                                    /* b start */
+               MIPS32_B(NEG16(55)),                                                    /* b start */
                MIPS32_NOP,
        };
        
        int retval;
        
        retval = mips32_pracc_exec(ejtag_info, sizeof(code)/sizeof(code[0]), code, \
-               32, regs, 0, NULL, 1);
+               38, regs, 0, NULL, 1);
        
        return retval;
 }
@@ -756,9 +769,9 @@ int mips32_pracc_read_regs(mips_ejtag_t *ejtag_info, u32 *regs)
                
                MIPS32_MFC0(2,12,0),                                                    /* move status to $2 */
                MIPS32_SW(2,32*4,1),                                                    /* sw $2,32*4($1) */
-               MIPS32_LO(2),                                                                   /* move lo to $2 */
+               MIPS32_MFLO(2),                                                                 /* move lo to $2 */
                MIPS32_SW(2,33*4,1),                                                    /* sw $2,33*4($1) */
-               MIPS32_HI(2),                                                                   /* move hi to $2 */
+               MIPS32_MFHI(2),                                                                 /* move hi to $2 */
                MIPS32_SW(2,34*4,1),                                                    /* sw $2,34*4($1) */
                MIPS32_MFC0(2,8,0),                                                             /* move badvaddr to $2 */
                MIPS32_SW(2,35*4,1),                                                    /* sw $2,35*4($1) */
@@ -767,8 +780,8 @@ int mips32_pracc_read_regs(mips_ejtag_t *ejtag_info, u32 *regs)
                MIPS32_MFC0(2,24,0),                                                    /* move pc to $2 */
                MIPS32_SW(2,37*4,1),                                                    /* sw $2,37*4($1) */
                
-               MIPS32_LW(2,0,15),                                                              /* sw $2,($15) */
-               MIPS32_LW(1,0,15),                                                              /* sw $1,($15) */
+               MIPS32_LW(2,0,15),                                                              /* lw $2,($15) */
+               MIPS32_LW(1,0,15),                                                              /* lw $1,($15) */
                MIPS32_MFC0(15,31,0),                                                   /* move COP0 DeSave to $15 */
                MIPS32_NOP,
                MIPS32_B(NEG16(60)),                                                    /* b start */
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