added a couple of LOG_ERROR() messages to improve logfile.

git-svn-id: svn://svn.berlios.de/openocd/trunk@548 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/flash/cfi.c

@@ -354,6 +354,7 @@ int cfi_read_intel_pri_ext(flash_bank_t *bank)
 		target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 		cfi_command(bank, 0xff, command);
 		target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+		LOG_ERROR("Could not read bank flash bank information");
 		return ERROR_FLASH_BANK_INVALID;
 	}
 
@@ -407,6 +408,7 @@ int cfi_read_spansion_pri_ext(flash_bank_t *bank)
 	{
 		cfi_command(bank, 0xf0, command);
 		target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+		LOG_ERROR("Could not read spansion bank information");
 		return ERROR_FLASH_BANK_INVALID;
 	}
 
@@ -475,6 +477,7 @@ int cfi_read_atmel_pri_ext(flash_bank_t *bank)
 	{
 		cfi_command(bank, 0xf0, command);
 		target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+		LOG_ERROR("Could not read atmel bank information");
 		return ERROR_FLASH_BANK_INVALID;
 	}
 
@@ -1935,6 +1938,7 @@ int cfi_probe(struct flash_bank_s *bank)
 			target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
 			cfi_command(bank, 0xff, command);
 			target->type->write_memory(target, flash_address(bank, 0, 0x0), bank->bus_width, 1, command);
+			LOG_ERROR("Could not probe bank");
 			return ERROR_FLASH_BANK_INVALID;
 		}
 

src/flash/ecos.c

@@ -195,10 +195,11 @@ int loadDriver(ecosflash_flash_bank_t *info)
 	image.base_address_set = 0;
 	image.start_address_set = 0;
 	target_t *target=info->target;
+	int retval;
 	
-	if (image_open(&image, info->driverPath, NULL) != ERROR_OK)
+	if ((retval=image_open(&image, info->driverPath, NULL)) != ERROR_OK)
 	{
-		return ERROR_FLASH_BANK_INVALID;
+		return retval;
 	}
 	
 	info->start_address=image.start_address;

src/flash/flash.c

@@ -884,7 +884,10 @@ int flash_erase_address_range(target_t *target, u32 addr, u32 length)
 		return ERROR_FLASH_DST_OUT_OF_BANK; /* no corresponding bank found */
 
 	if (c->size == 0 || c->num_sectors == 0)
+	{
+		LOG_ERROR("Bank is invalid");
 		return ERROR_FLASH_BANK_INVALID;
+	}
 
 	if (length == 0)
 	{