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Georg Acher <acher@in.tum.de> implements the buffer flash mode for Spansion flashes...
[openocd.git] / src / flash / str9x.c
diff --git a/src/flash/str9x.c b/src/flash/str9x.c
index fbae6c688e35a43e5830dd5df3097d3534c7a8a0..1160c7090a91ca36f2240cfdd0e97c21fca653d6 100644 (file)
--- a/src/flash/str9x.c
+++ b/src/flash/str9x.c
@@ -2,6 +2,12 @@
  *   Copyright (C) 2005 by Dominic Rath                                    *
  *   Dominic.Rath@gmx.de                                                   *
  *                                                                         *
+ *   Copyright (C) 2008 by Spencer Oliver                                  *
+ *   spen@spen-soft.co.uk                                                  *
+ *
+ *   Copyright (C) 2008 by Oyvind Harboe                                   *
+ *   oyvind.harboe@zylin.com                                               *
+ *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *
  *   the Free Software Foundation; either version 2 of the License, or     *
@@ -180,6 +186,7 @@ int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char
 
 int str9x_protect_check(struct flash_bank_s *bank)
 {
+       int retval;
        str9x_flash_bank_t *str9x_info = bank->driver_priv;
        target_t *target = bank->target;
        
@@ -189,6 +196,7 @@ int str9x_protect_check(struct flash_bank_s *bank)
 
        if (bank->target->state != TARGET_HALTED)
        {
+               LOG_ERROR("Target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -199,25 +207,46 @@ int str9x_protect_check(struct flash_bank_s *bank)
                if (str9x_info->bank1)
                {
                        adr = bank1start + 0x18;
-                       target_write_u16(target, adr, 0x90);
-                       target_read_u16(target, adr, (u16*)&status);
+                       if ((retval=target_write_u16(target, adr, 0x90))!=ERROR_OK)
+                       {
+                               return retval;
+                       }
+                       if ((retval=target_read_u16(target, adr, (u16*)&status))!=ERROR_OK)
+                       {
+                               return retval;
+                       }
                }
                else
                {
                        adr = bank1start + 0x14;
-                       target_write_u16(target, adr, 0x90);
-                       target_read_u32(target, adr, &status);
+                       if ((retval=target_write_u16(target, adr, 0x90))!=ERROR_OK)
+                       {
+                               return retval;
+                       }
+                       if ((retval=target_read_u32(target, adr, &status))!=ERROR_OK)
+                       {
+                               return retval;
+                       }
                }
        }
        else
        {
                adr = bank1start + 0x10;
-               target_write_u16(target, adr, 0x90);
-               target_read_u16(target, adr, (u16*)&status);
+               if ((retval=target_write_u16(target, adr, 0x90))!=ERROR_OK)
+               {
+                       return retval;
+               }
+               if ((retval=target_read_u16(target, adr, (u16*)&status))!=ERROR_OK)
+               {
+                       return retval;
+               }
        }
        
        /* read array command */
-       target_write_u16(target, adr, 0xFF);
+       if ((retval=target_write_u16(target, adr, 0xFF))!=ERROR_OK)
+       {
+               return retval;
+       }
        
        for (i = 0; i < bank->num_sectors; i++)
        {
@@ -240,6 +269,7 @@ int str9x_erase(struct flash_bank_s *bank, int first, int last)
        
        if (bank->target->state != TARGET_HALTED)
        {
+               LOG_ERROR("Target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -257,27 +287,52 @@ int str9x_erase(struct flash_bank_s *bank, int first, int last)
        
        for (i = first; i <= last; i++)
        {
+               int retval;
                adr = bank->base + bank->sectors[i].offset;
                
                /* erase sectors */
-               target_write_u16(target, adr, erase_cmd);
-               target_write_u16(target, adr, 0xD0);
+               if ((retval=target_write_u16(target, adr, erase_cmd))!=ERROR_OK)
+               {
+                       return retval;
+               }
+               if ((retval=target_write_u16(target, adr, 0xD0))!=ERROR_OK)
+               {
+                       return retval;
+               }
                
                /* get status */
-               target_write_u16(target, adr, 0x70);
-               
-               while (1) {
-                       target_read_u8(target, adr, &status);
+               if ((retval=target_write_u16(target, adr, 0x70))!=ERROR_OK)
+               {
+                       return retval;
+               }
+
+               int timeout;            
+               for (timeout=0; timeout<1000; timeout++) {
+                       if ((retval=target_read_u8(target, adr, &status))!=ERROR_OK)
+                       {
+                               return retval;
+                       }
                        if( status & 0x80 )
                                break;
-                       usleep(1000);
+                       alive_sleep(1);
+               }
+               if (timeout==1000)
+               {
+                       LOG_ERROR("erase timed out");
+                       return ERROR_FAIL;
                }
                
                /* clear status, also clear read array */
-               target_write_u16(target, adr, 0x50);
+               if ((retval=target_write_u16(target, adr, 0x50))!=ERROR_OK)
+               {
+                       return retval;
+               }
                
                /* read array command */
-               target_write_u16(target, adr, 0xFF);
+               if ((retval=target_write_u16(target, adr, 0xFF))!=ERROR_OK)
+               {
+                       return retval;
+               }
                
                if( status & 0x22 )
                {
@@ -305,6 +360,7 @@ int str9x_protect(struct flash_bank_s *bank, int set, int first, int last)
        
        if (bank->target->state != TARGET_HALTED)
        {
+               LOG_ERROR("Target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
        
@@ -456,6 +512,7 @@ int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
        
        if (bank->target->state != TARGET_HALTED)
        {
+               LOG_ERROR("Target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -520,12 +577,19 @@ int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
                
                /* get status command */
                target_write_u16(target, bank_adr, 0x70);
-               
-               while (1) {
+       
+               int timeout;
+               for (timeout=0; timeout<1000; timeout++)
+               {       
                        target_read_u8(target, bank_adr, &status);
                        if( status & 0x80 )
                                break;
-                       usleep(1000);
+                       alive_sleep(1);
+               }
+               if (timeout==1000)
+               {
+                       LOG_ERROR("write timed out");
+                       return ERROR_FAIL;
                }
                
                /* clear status reg and read array */
@@ -563,11 +627,18 @@ int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
                /* query status command */
                target_write_u16(target, bank_adr, 0x70);
                
-               while (1) {
+               int timeout;
+               for (timeout=0; timeout<1000; timeout++)
+               {       
                        target_read_u8(target, bank_adr, &status);
                        if( status & 0x80 )
                                break;
-                       usleep(1000);
+                       alive_sleep(1);
+               }
+               if (timeout==1000)
+               {
+                       LOG_ERROR("write timed out");
+                       return ERROR_FAIL;
                }
                
                /* clear status reg and read array */
@@ -623,6 +694,7 @@ int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx, char *c
        
        if (bank->target->state != TARGET_HALTED)
        {
+               LOG_ERROR("Target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
        
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