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SimonQian <simonqian@simonqian.com> AVR wip
[openocd.git] / src / flash / str9x.c
diff --git a/src/flash/str9x.c b/src/flash/str9x.c
index 7468c3fb8d2a8982c887eba2eb1c7a273bd0716e..fbba4fec4b748dcafe5551cb734637fa20d52202 100644 (file)
--- a/src/flash/str9x.c
+++ b/src/flash/str9x.c
@@ -4,6 +4,9 @@
  *                                                                         *
  *   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  *
@@ -41,17 +44,17 @@
 
 static u32 bank1start = 0x00080000;
 
-int str9x_register_commands(struct command_context_s *cmd_ctx);
-int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
-int str9x_erase(struct flash_bank_s *bank, int first, int last);
-int str9x_protect(struct flash_bank_s *bank, int set, int first, int last);
-int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
-int str9x_probe(struct flash_bank_s *bank);
-int str9x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int str9x_protect_check(struct flash_bank_s *bank);
-int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size);
+static int str9x_register_commands(struct command_context_s *cmd_ctx);
+static int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
+static int str9x_erase(struct flash_bank_s *bank, int first, int last);
+static int str9x_protect(struct flash_bank_s *bank, int set, int first, int last);
+static int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
+static int str9x_probe(struct flash_bank_s *bank);
+//static int str9x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int str9x_protect_check(struct flash_bank_s *bank);
+static int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size);
 
-int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
 
 flash_driver_t str9x_flash =
 {
@@ -68,7 +71,7 @@ flash_driver_t str9x_flash =
        .info = str9x_info
 };
 
-int str9x_register_commands(struct command_context_s *cmd_ctx)
+static int str9x_register_commands(struct command_context_s *cmd_ctx)
 {
        command_t *str9x_cmd = register_command(cmd_ctx, NULL, "str9x", NULL, COMMAND_ANY, NULL);
        
@@ -78,7 +81,7 @@ int str9x_register_commands(struct command_context_s *cmd_ctx)
        return ERROR_OK;
 }
 
-int str9x_build_block_list(struct flash_bank_s *bank)
+static int str9x_build_block_list(struct flash_bank_s *bank)
 {
        str9x_flash_bank_t *str9x_info = bank->driver_priv;
        
@@ -161,7 +164,8 @@ int str9x_build_block_list(struct flash_bank_s *bank)
 
 /* flash bank str9x <base> <size> 0 0 <target#>
  */
-int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
+static int str9x_flash_bank_command(struct command_context_s *cmd_ctx,
+               char *cmd, char **args, int argc, struct flash_bank_s *bank)
 {
        str9x_flash_bank_t *str9x_info;
        
@@ -181,17 +185,20 @@ int str9x_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char
        return ERROR_OK;
 }
 
-int str9x_protect_check(struct flash_bank_s *bank)
+static 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;
        
        int i;
        u32 adr;
        u32 status = 0;
+       u16 hstatus = 0;
 
        if (bank->target->state != TARGET_HALTED)
        {
+               LOG_ERROR("Target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -202,25 +209,48 @@ 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, &hstatus))!=ERROR_OK)
+                       {
+                               return retval;
+                       }
+                       status = hstatus;
                }
                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, &hstatus))!=ERROR_OK)
+               {
+                       return retval;
+               }
+               status = hstatus;
        }
        
        /* 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++)
        {
@@ -233,7 +263,7 @@ int str9x_protect_check(struct flash_bank_s *bank)
        return ERROR_OK;
 }
 
-int str9x_erase(struct flash_bank_s *bank, int first, int last)
+static int str9x_erase(struct flash_bank_s *bank, int first, int last)
 {
        target_t *target = bank->target;
        int i;
@@ -243,6 +273,7 @@ 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;
        }
 
@@ -260,27 +291,52 @@ 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 )
                {
@@ -299,7 +355,8 @@ int str9x_erase(struct flash_bank_s *bank, int first, int last)
        return ERROR_OK;
 }
 
-int str9x_protect(struct flash_bank_s *bank, int set, int first, int last)
+static int str9x_protect(struct flash_bank_s *bank,
+               int set, int first, int last)
 {
        target_t *target = bank->target;
        int i;
@@ -308,6 +365,7 @@ 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;
        }
        
@@ -336,7 +394,8 @@ int str9x_protect(struct flash_bank_s *bank, int set, int first, int last)
        return ERROR_OK;
 }
 
-int str9x_write_block(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
+static int str9x_write_block(struct flash_bank_s *bank,
+               u8 *buffer, u32 offset, u32 count)
 {
        str9x_flash_bank_t *str9x_info = bank->driver_priv;
        target_t *target = bank->target;
@@ -444,7 +503,8 @@ int str9x_write_block(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 cou
        return retval;
 }
 
-int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
+static int str9x_write(struct flash_bank_s *bank,
+               u8 *buffer, u32 offset, u32 count)
 {
        target_t *target = bank->target;
        u32 words_remaining = (count / 2);
@@ -452,13 +512,14 @@ int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
        u32 address = bank->base + offset;
        u32 bytes_written = 0;
        u8 status;
-       u32 retval;
+       int retval;
        u32 check_address = offset;
        u32 bank_adr;
        int i;
        
        if (bank->target->state != TARGET_HALTED)
        {
+               LOG_ERROR("Target not halted");
                return ERROR_TARGET_NOT_HALTED;
        }
 
@@ -523,12 +584,19 @@ 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 */
@@ -566,11 +634,18 @@ 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 */
@@ -586,23 +661,27 @@ int str9x_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
        return ERROR_OK;
 }
 
-int str9x_probe(struct flash_bank_s *bank)
+static int str9x_probe(struct flash_bank_s *bank)
 {
        return ERROR_OK;
 }
 
-int str9x_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+#if 0
+static int str9x_handle_part_id_command(struct command_context_s *cmd_ctx,
+               char *cmd, char **args, int argc)
 {
        return ERROR_OK;
 }
+#endif
 
-int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size)
+static int str9x_info(struct flash_bank_s *bank, char *buf, int buf_size)
 {
        snprintf(buf, buf_size, "str9x flash driver info" );
        return ERROR_OK;
 }
 
-int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int str9x_handle_flash_config_command(struct command_context_s *cmd_ctx,
+               char *cmd, char **args, int argc)
 {
        str9x_flash_bank_t *str9x_info;
        flash_bank_t *bank;
@@ -626,6 +705,7 @@ 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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