summaryrefslogtreecommitdiff
path: root/src/flash
diff options
context:
space:
mode:
authoroharboe <oharboe@b42882b7-edfa-0310-969c-e2dbd0fdcd60>2008-10-06 06:22:58 +0000
committeroharboe <oharboe@b42882b7-edfa-0310-969c-e2dbd0fdcd60>2008-10-06 06:22:58 +0000
commit333499a962c56b9b5b121d469d0b048b891c0fa1 (patch)
tree90555cc6b463885b0ab60d4d2caf61f32d59b498 /src/flash
parent9807a002060e935d8756cad6379a5aa3a934b192 (diff)
downloadopenocd_libswd-333499a962c56b9b5b121d469d0b048b891c0fa1.tar.gz
openocd_libswd-333499a962c56b9b5b121d469d0b048b891c0fa1.tar.bz2
openocd_libswd-333499a962c56b9b5b121d469d0b048b891c0fa1.tar.xz
openocd_libswd-333499a962c56b9b5b121d469d0b048b891c0fa1.zip
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
Diffstat (limited to 'src/flash')
-rw-r--r--src/flash/cfi.c74
1 files changed, 71 insertions, 3 deletions
diff --git a/src/flash/cfi.c b/src/flash/cfi.c
index 1ad6d266..90d5678c 100644
--- a/src/flash/cfi.c
+++ b/src/flash/cfi.c
@@ -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;