From fc1b5fb2188f3bff548536dbabdffe4283546326 Mon Sep 17 00:00:00 2001
From: manuvelayudhan <36821019+manuvelayudhan@users.noreply.github.com>
Date: Tue, 27 Feb 2018 14:31:56 +0530
Subject: [PATCH] If the specified address for write operation is a valid
 EEPROM address, the requested write is carried out using the existing flash
 write functions. In order for this to work, the flash parameter fields of the
 _stlink structure (base, size and page size) are over-written with EEPROM
 parameters.

---
 src/tools/flash.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/tools/flash.c b/src/tools/flash.c
index 508c4aa84..354e75dd2 100644
--- a/src/tools/flash.c
+++ b/src/tools/flash.c
@@ -162,6 +162,24 @@ int main(int ac, char** av)
                 goto on_error;
             }
         }
+        else if ((o.addr >= sl->eeprom_base) &&
+                (o.addr < sl->eeprom_base + sl->eeprom_size)) {
+
+            /* Hack to use existing flash write functions for writing to eeprom */
+            sl->flash_base = sl->eeprom_base;
+            sl->flash_size = sl->eeprom_size;
+            sl->flash_pgsz = sl->eeprom_pgsz;
+
+            if(o.format == FLASH_FORMAT_IHEX)
+                err = stlink_mwrite_flash(sl, mem, (uint32_t)size, o.addr);
+            else
+                err = stlink_fwrite_flash(sl, o.filename, o.addr);
+            if (err == -1)
+            {
+                printf("eeprom : stlink_fwrite_flash() == -1\n");
+                goto on_error;
+            }
+        }
         else {
             err = -1;
             printf("Unknown memory region\n");