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--- doc:appunti:hardware:android_partitions [2020/01/17 10:24] – [sgdisk] niccolo
+++ doc:appunti:hardware:android_partitions [2020/01/17 12:37] – [The Scatter File] niccolo
@@ Line 9: / Line 9: @@
 ===== The Scatter File =====
+A Scatter File is a .txt file which is used to describe **parts of flash memory** in an Android device which is running on a MediaTek’s MTK chipeset. Usually, such files are needed at the time of flashing firmware using tools like the **SP Flash Tool**.
+Here it is an **excerpt** of a scatter file, showing **where** to **flash** or **readback** the **recovery partition**:
+<file>
+- partition_index: SYS9
+  partition_name: recovery
+  file_name: recovery.img
+  is_download: true
+  type: NORMAL_ROM
+  linear_start_addr: 0x2D80000
+  physical_start_addr: 0x2D80000
+  partition_size: 0x1000000
+  region: EMMC_USER
+  storage: HW_STORAGE_EMMC
+  boundary_check: true
+  is_reserved: false
+  operation_type: UPDATE
+  reserve: 0x00
+</file>
+The most important data is **linear_start_addr** and **physical_start_addr** (which are always the same, or not?) that states the starting point of that partition into the flash memory, and **partition_size** which is obviously its lenght.
+The **SP Flash Tool** program - when performing a //download// (it means a //flashing//) operation - will write the file into the phone starting at the specified address, checking that the file does not exceed the partition size. During a //readback// operation it will read the entire size specified in the scatter file.
 ===== EMMC Regions =====