2 files changed, 22 insertions, 1 deletions
diff --git a/kernel/devices/include/devices/BlockDevice.hpp b/kernel/devices/include/devices/BlockDevice.hpp
index db66683..69d7f81 100644
--- a/kernel/devices/include/devices/BlockDevice.hpp
+++ b/kernel/devices/include/devices/BlockDevice.hpp
@@ -1,10 +1,15 @@
 #ifndef TEACH_OS_KERNEL_DEVICES_BLOCK_DEVICE_HPP
 #define TEACH_OS_KERNEL_DEVICES_BLOCK_DEVICE_HPP
 
+#include <cstddef>
+
 namespace devices
 {
   struct block_device
   {
+    virtual ~block_device() = default;
+
+    virtual auto read_block(size_t block_index, void * buffer) const -> void = 0;
   };
 }  // namespace devices
 
diff --git a/kernel/devices/include/devices/storage/RAMDisk/RAMDiskDevice.hpp b/kernel/devices/include/devices/storage/RAMDisk/RAMDiskDevice.hpp
index 98471cf..aa736a4 100644
--- a/kernel/devices/include/devices/storage/RAMDisk/RAMDiskDevice.hpp
+++ b/kernel/devices/include/devices/storage/RAMDisk/RAMDiskDevice.hpp
@@ -1,10 +1,26 @@
 #ifndef TEACH_OS_KERNEL_DEVICES_STORAGE_RAM_DISK_DEVICE_HPP
 #define TEACH_OS_KERNEL_DEVICES_STORAGE_RAM_DISK_DEVICE_HPP
 
+#include "kapi/memory.hpp"
+
+#include "devices/BlockDevice.hpp"
+
+#include <cstddef>
+
 namespace devices::storage::ram_disk
 {
-  struct ram_disk_device
+  struct ram_disk_device : block_device
   {
+    constexpr size_t static block_size = 512uz;  // TODO BA-FS26 really correct / good??
+
+    ram_disk_device() = default;
+    ram_disk_device(kapi::memory::linear_address data_start, size_t data_size);
+
+    auto read_block(size_t block_index, void * buffer) const -> void override;
+
+  private:
+    kapi::memory::linear_address m_data_start{};
+    size_t m_data_size{};
   };
 }  // namespace devices::storage::ram_disk