- fix issue with luminary flash driver and tail bytes

git-svn-id: svn://svn.berlios.de/openocd/trunk@1191 b42882b7-edfa-0310-969c-e2dbd0fdcd60

diff --git a/src/flash/stellaris.c b/src/flash/stellaris.c
index 895fda1b61bd7115cd5ce7207d14bfec72f6fe66..657d62f941e8490446eb5f362b5c52b090e77f51 100644 (file)
--- a/src/flash/stellaris.c
+++ b/src/flash/stellaris.c
@@ -815,7 +815,10 @@ int stellaris_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count
        stellaris_flash_bank_t *stellaris_info = bank->driver_priv;
        target_t *target = bank->target;
        u32 address = offset;
-       u32 flash_cris,flash_fmc;
+       u32 flash_cris, flash_fmc;
+       u32 words_remaining = (count / 4);
+       u32 bytes_remaining = (count & 0x00000003);
+       u32 bytes_written = 0;
        u32 retval;
        
        if (bank->target->state != TARGET_HALTED)
@@ -838,7 +841,7 @@ int stellaris_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count
                return ERROR_FLASH_OPERATION_FAILED;
        }
        
-       if((offset & 3) || (count & 3))
+       if (offset & 0x3)
        {
                LOG_WARNING("offset size must be word aligned");
                return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
@@ -856,10 +859,10 @@ int stellaris_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count
        target_write_u32(target, FLASH_MISC, PMISC|AMISC);
 
        /* multiple words to be programmed? */
-       if (count > 0) 
+       if (words_remaining > 0) 
        {
                /* try using a block write */
-               if ((retval = stellaris_write_block(bank, buffer, offset, count/4)) != ERROR_OK)
+               if ((retval = stellaris_write_block(bank, buffer, offset, words_remaining)) != ERROR_OK)
                {
                        if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
                        {
@@ -878,13 +881,13 @@ int stellaris_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count
                }
                else
                {
-                       buffer += count * 4;
-                       address += count * 4;
-                       count = 0;
+                       buffer += words_remaining * 4;
+                       address += words_remaining * 4;
+                       words_remaining = 0;
                }
        }
        
-       while (count > 0)
+       while (words_remaining > 0)
        {
                if (!(address & 0xff))
                        LOG_DEBUG("0x%x", address);
@@ -898,13 +901,41 @@ int stellaris_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count
                do
                {
                        target_read_u32(target, FLASH_FMC, &flash_fmc);
-               }
-               while (flash_fmc & FMC_WRITE);
+               } while (flash_fmc & FMC_WRITE);
+               
                buffer += 4;
                address += 4;
-               count -= 4;
+               words_remaining--;
        }
-       /* Check acess violations */
+       
+       if (bytes_remaining)
+       {
+               u8 last_word[4] = {0xff, 0xff, 0xff, 0xff};
+               int i = 0;
+                               
+               while(bytes_remaining > 0)
+               {
+                       last_word[i++] = *(buffer + bytes_written); 
+                       bytes_remaining--;
+                       bytes_written++;
+               }
+               
+               if (!(address & 0xff))
+                       LOG_DEBUG("0x%x", address);
+               
+               /* Program one word */
+               target_write_u32(target, FLASH_FMA, address);
+               target_write_buffer(target, FLASH_FMD, 4, last_word);
+               target_write_u32(target, FLASH_FMC, FMC_WRKEY | FMC_WRITE);
+               /* LOG_DEBUG("0x%x 0x%x 0x%x",address,buf_get_u32(buffer, 0, 32),FMC_WRKEY | FMC_WRITE); */
+               /* Wait until write complete */
+               do
+               {
+                       target_read_u32(target, FLASH_FMC, &flash_fmc);
+               } while (flash_fmc & FMC_WRITE);
+       }
+       
+       /* Check access violations */
        target_read_u32(target, FLASH_CRIS, &flash_cris);
        if (flash_cris & (AMASK))
        {