* rodrigorosa.LG@gmail.com *
* *
* Based on a file written by: *
- * Kevin McGuire *
+ * Kevin McGuire *
* Marcel Wijlaars *
* Michael Ashton *
* *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+/**
+ * @file dsp5680xx_flash.c
+ * @author Rodrigo L. Rosa <rodrigorosa.LG@gmail.com>
+ * @date Thu Jun 9 18:21:58 2011
+ *
+ * @brief This file implements the basic functions to run flashing commands
+ * from the TCL interface.
+ * It allows the user to flash the Freescale 5680xx DSP.
+ *
+ *
+ */
+
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
return ERROR_OK;
}
+/**
+ * A memory mapped register (PROT) holds information regarding sector protection.
+ * Protection refers to undesired core access.
+ * The value in this register is loaded from flash upon reset.
+ *
+ * @param bank
+ *
+ * @return
+ */
static int dsp5680xx_flash_protect_check(struct flash_bank *bank){
int retval = ERROR_OK;
uint16_t protected = 0;
return retval;
}
+/**
+ * Protection funcionality is not implemented.
+ * The current implementation applies/removes security on the chip.
+ * The chip is effectively secured/unsecured after the first reset following the execution of this function.
+ *
+ * @param bank
+ * @param set Apply or remove security on the chip.
+ * @param first This parameter is ignored.
+ * @param last This parameter is ignored.
+ *
+ * @return
+ */
static int dsp5680xx_flash_protect(struct flash_bank *bank, int set, int first, int last){
// This applies security to flash module after next reset, it does not actually apply protection (protection refers to undesired access from the core)
int retval;
- if(set){
+ if(set)
retval = dsp5680xx_f_lock(bank->target);
- if(retval == ERROR_OK){
- for(int i = first;i<last;i++)
- bank->sectors[i].is_protected = 1;
- }
- }else{
+ else
retval = dsp5680xx_f_unlock(bank->target);
- if(retval == ERROR_OK)
- for(int i = first;i<last;i++)
- bank->sectors[i].is_protected = 0;
- }
return retval;
}
-/*
-static int dsp5680xx_write_block(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count){
- LOG_USER("%s not implemented",__FUNCTION__);
- return ERROR_OK;
-}
-
-static int dsp5680xx_write_single(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count){
- LOG_USER("%s not implemented",__FUNCTION__);
- return ERROR_OK;
-}
-*/
-
-//-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-//-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-// Flash stuff test
-//-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-//-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-
+/**
+ * The dsp5680xx use word addressing. The "/2" that appear in the following code are a workaround for the fact that OpenOCD uses byte addressing.
+ *
+ * @param bank
+ * @param buffer Data to write to flash.
+ * @param offset
+ * @param count In bytes (2 bytes per address).
+ *
+ * @return
+ */
static int dsp5680xx_flash_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count){
int retval;
if((offset + count/2)>bank->size){
LOG_ERROR("%s: Writing to odd addresses not supported. This chip uses word addressing, Openocd only supports byte addressing. The workaround results in disabling writing to odd byte addresses.",__FUNCTION__);
return ERROR_FAIL;
}
- retval = dsp5680xx_f_wr(bank->target, buffer, bank->base + offset/2, count);
- if(retval == ERROR_OK)
- bank->sectors[0].is_erased = 0;
- else
- bank->sectors[0].is_erased = -1;
+ retval = dsp5680xx_f_wr(bank->target, buffer, bank->base + offset/2, count, 0);
+ uint32_t addr_word;
+ for(addr_word = bank->base + offset/2;addr_word<count/2;addr_word+=(HFM_SECTOR_SIZE/2)){
+ if(retval == ERROR_OK)
+ bank->sectors[addr_word/(HFM_SECTOR_SIZE/2)].is_erased = 0;
+ else
+ bank->sectors[addr_word/(HFM_SECTOR_SIZE/2)].is_erased = -1;
+ }
return retval;
}
snprintf(buf, buf_size, "\ndsp5680xx flash driver info:\n - Currently only full erase/lock/unlock are implemented. \n - Call with bank==0 and sector 0 to 0.\n - Protect requires arp_init-reset to complete. \n - Before removing protection the master tap must be selected, and arp_init-reset is required to complete unlocking.");
return ERROR_OK;
}
-/*
-static int dsp5680xx_set_write_enable(struct target *target, int enable){
- LOG_USER("%s not implemented",__FUNCTION__);
- return ERROR_OK;
-}
-
-
-static int dsp5680xx_check_flash_completion(struct target* target, unsigned int timeout_ms){
- LOG_USER("%s not implemented",__FUNCTION__);
- return ERROR_OK;
-}
-*/
+/**
+ * The flash module (FM) on the dsp5680xx supports both individual sector and mass erase of the flash memory.
+ * If this function is called with @first == @last == 0 or if @first is the first sector (#0) and @last is the last sector then the mass erase command is executed (much faster than erasing each sector individually).
+ *
+ * @param bank
+ * @param first
+ * @param last
+ *
+ * @return
+ */
static int dsp5680xx_flash_erase(struct flash_bank * bank, int first, int last){
int retval;
retval = dsp5680xx_f_erase(bank->target, (uint32_t) first, (uint32_t) last);
return retval;
}
+/**
+ * The flash module (FM) on the dsp5680xx support a blank check function.
+ * This function executes the FM's blank check functionality on each and every sector.
+ *
+ * @param bank
+ *
+ * @return
+ */
static int dsp5680xx_flash_erase_check(struct flash_bank * bank){
int retval = ERROR_OK;
uint8_t erased = 0;
Code Review / openocd.git / blobdiff