1 //
2 // Copyright (c) 2010-2023 Antmicro
3 //
4 // This file is licensed under the MIT License.
5 // Full license text is available in 'licenses/MIT.txt'.
6 //
7 using Antmicro.Renode.Exceptions;
8 using Antmicro.Renode.Peripherals.Memory;
9 using Antmicro.Renode.Utilities;
10 
11 namespace Antmicro.Renode.Peripherals.SPI
12 {
13     public class Micron_MT25Q : GenericSpiFlash
14     {
Micron_MT25Q(MappedMemory underlyingMemory, byte extendedDeviceId = DefaultExtendedDeviceId)15         public Micron_MT25Q(MappedMemory underlyingMemory, byte extendedDeviceId = DefaultExtendedDeviceId)
16             : base(underlyingMemory, manufacturerId: ManufacturerId, memoryType: MemoryType, extendedDeviceId: extendedDeviceId)
17         {
18             // original MT25Q supports capacity 8MB to 256MB,
19             // but we extended it down to 64KB
20             // to become compatible with N25Q line
21             if(underlyingMemory.Size < 64.KB() || underlyingMemory.Size > 256.MB())
22             {
23                 throw new ConstructionException("Size of the underlying memory must be in range 64KB - 256MB");
24             }
25         }
26 
27         private const byte ManufacturerId = 0x20;
28         private const byte MemoryType = 0xBB; // device voltage: 1.8V
29         private const byte DefaultExtendedDeviceId = 0x00;
30 
31         // Based on TN-25-06 sepicification - incomplete, therefore unused for now.
32         private readonly byte[] DefaultSFDPSignature = new byte[]
33         {
34             0x53, 0x46, 0x44, 0x50, 0x06, 0x01, 0x00, 0xFF, 0x00, 0x06,
35             0x01, 0x10, 0x30, 0x00, 0x00, 0xFF, 0x84, 0x00, 0x01, 0x02,
36             0x80, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
37             0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
38             0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
39             // Values below are not consistent with the spec
40             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
41             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
42             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
43             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
44             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
45             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
46             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
47             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
48             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
49             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
50             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
51             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
52             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
53             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
54             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
55             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
56             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
57             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
58             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
59             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
60             0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
61         };
62     }
63 }
64