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Georg Acher <acher@in.tum.de> implements the buffer flash mode for Spansion flashes. It's basically a clone of the Intel version, just a few details differ 

git-svn-id: svn://svn.berlios.de/openocd/trunk@1017 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
oharboe 2008-10-06 06:22:58 +00:00
parent 9807a00206
commit 333499a962
1 changed files with 71 additions and 3 deletions
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74
src/flash/cfi.c
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@ -1595,6 +1595,75 @@ int cfi_spansion_write_word(struct flash_bank_s *bank, u8 *word, u32 address)
return ERROR_OK;
}
int cfi_spansion_write_words(struct flash_bank_s *bank, u8 *word, u32 wordcount, u32 address)
{
cfi_flash_bank_t *cfi_info = bank->driver_priv;
target_t *target = bank->target;
u8 command[8];
int sector;
cfi_spansion_pri_ext_t *pri_ext = cfi_info->pri_ext;
/* Calculate buffer size and boundary mask */
u32 buffersize = 1UL << cfi_info->max_buf_write_size;
u32 buffermask = buffersize-1;
u32 bufferwsize;
/* Check for valid range */
if (address & buffermask)
{
LOG_ERROR("Write address at base 0x%x, address %x not aligned to 2^%d boundary", bank->base, address, cfi_info->max_buf_write_size);
return ERROR_FLASH_OPERATION_FAILED;
}
switch(bank->chip_width)
{
case 4 : bufferwsize = buffersize / 4; break;
case 2 : bufferwsize = buffersize / 2; break;
case 1 : bufferwsize = buffersize; break;
default:
LOG_ERROR("Unsupported chip width %d", bank->chip_width);
return ERROR_FLASH_OPERATION_FAILED;
}
/* Check for valid size */
if (wordcount > bufferwsize)
{
LOG_ERROR("Number of data words %d exceeds available buffersize %d", wordcount, buffersize);
return ERROR_FLASH_OPERATION_FAILED;
}
// Unlock
cfi_command(bank, 0xaa, command);
target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock1), bank->bus_width, 1, command);
cfi_command(bank, 0x55, command);
target->type->write_memory(target, flash_address(bank, 0, pri_ext->_unlock2), bank->bus_width, 1, command);
// Buffer load command
cfi_command(bank, 0x25, command);
target->type->write_memory(target, address, bank->bus_width, 1, command);
/* Write buffer wordcount-1 and data words */
cfi_command(bank, bufferwsize-1, command);
target->type->write_memory(target, address, bank->bus_width, 1, command);
target->type->write_memory(target, address, bank->bus_width, bufferwsize, word);
/* Commit write operation */
cfi_command(bank, 0x29, command);
target->type->write_memory(target, address, bank->bus_width, 1, command);
if (cfi_spansion_wait_status_busy(bank, 1000 * (1 << cfi_info->word_write_timeout_max)) != ERROR_OK)
{
cfi_command(bank, 0xf0, command);
target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
LOG_ERROR("couldn't write block at base 0x%x, address %x, size %x", bank->base, address, bufferwsize);
return ERROR_FLASH_OPERATION_FAILED;
}
return ERROR_OK;
}
int cfi_write_word(struct flash_bank_s *bank, u8 *word, u32 address)
{
cfi_flash_bank_t *cfi_info = bank->driver_priv;
@ -1627,8 +1696,7 @@ int cfi_write_words(struct flash_bank_s *bank, u8 *word, u32 wordcount, u32 addr
return cfi_intel_write_words(bank, word, wordcount, address);
break;
case 2:
/* return cfi_spansion_write_words(bank, word, address); */
LOG_ERROR("cfi primary command set %i unimplemented - FIXME", cfi_info->pri_id);
return cfi_spansion_write_words(bank, word, wordcount, address);
break;
default:
LOG_ERROR("cfi primary command set %i unsupported", cfi_info->pri_id);
@ -2261,7 +2329,7 @@ int cfi_info(struct flash_bank_s *bank, char *buf, int buf_size)
printed = snprintf(buf, buf_size, "size: 0x%x, interface desc: %i, max buffer write size: %x\n",
1 << cfi_info->dev_size,
cfi_info->interface_desc,
cfi_info->max_buf_write_size);
1 << cfi_info->max_buf_write_size);
buf += printed;
buf_size -= printed;