From d46ad652cc7c109527fa0f15374d0e6596c829da Mon Sep 17 00:00:00 2001
From: David Saada <david.saada@arm.com>
Date: Thu, 12 Apr 2018 21:35:00 +0300
Subject: [PATCH] Implement the get_erase_value function

---
 SPIFBlockDevice.cpp |  5 +++++
 SPIFBlockDevice.h   | 11 +++++++++++
 2 files changed, 16 insertions(+)

diff --git a/SPIFBlockDevice.cpp b/SPIFBlockDevice.cpp
index 12308d09e9..64bf16e83c 100644
--- a/SPIFBlockDevice.cpp
+++ b/SPIFBlockDevice.cpp
@@ -333,3 +333,8 @@ bd_size_t SPIFBlockDevice::size() const
 {
     return _size;
 }
+
+int SPIFBlockDevice::get_erase_value() const
+{
+    return 0xFF;
+}
diff --git a/SPIFBlockDevice.h b/SPIFBlockDevice.h
index c4ee447e2f..811a9f81bb 100644
--- a/SPIFBlockDevice.h
+++ b/SPIFBlockDevice.h
@@ -130,6 +130,17 @@ public:
      */
     virtual bd_size_t get_erase_size() const;
 
+    /** Get the value of storage when erased
+     *
+     *  If get_erase_value returns a non-negative byte value, the underlying
+     *  storage is set to that value when erased, and storage containing
+     *  that value can be programmed without another erase.
+     *
+     *  @return         The value of storage when erased, or -1 if you can't
+     *                  rely on the value of erased storage
+     */
+    virtual int get_erase_value() const;
+
     /** Get the total size of the underlying device
      *
      *  @return         Size of the underlying device in bytes