1 /* SPDX-License-Identifier: GPL-2.0-only */
4 * Copyright (c) 2008 Simtec Electronics
5 * http://armlinux.simtec.co.uk/
8 * AMBA PL093 SSMC (synchronous static memory controller)
9 * See DDI0236.pdf (r0p4) for more details
12 #define SMB_BANK(x) ((x) * 0x20) /* each bank control set is 0x20 apart */
14 /* Offsets for SMBxxxxRy registers */
16 #define SMBIDCYR (0x00)
17 #define SMBWSTRDR (0x04)
18 #define SMBWSTWRR (0x08)
19 #define SMBWSTOENR (0x0C)
20 #define SMBWSTWENR (0x10)
23 #define SMBWSTBRDR (0x1C)
25 /* Masks for SMB registers */
26 #define IDCY_MASK (0xf)
27 #define WSTRD_MASK (0xf)
28 #define WSTWR_MASK (0xf)
29 #define WSTOEN_MASK (0xf)
30 #define WSTWEN_MASK (0xf)
32 /* Notes from datasheet:
36 * WSTOEN is not used with nWAIT
39 /* SMBCR bit definitions */
40 #define SMBCR_BIWRITEEN (1 << 21)
41 #define SMBCR_ADDRVALIDWRITEEN (1 << 20)
42 #define SMBCR_SYNCWRITE (1 << 17)
43 #define SMBCR_BMWRITE (1 << 16)
44 #define SMBCR_WRAPREAD (1 << 14)
45 #define SMBCR_BIREADEN (1 << 13)
46 #define SMBCR_ADDRVALIDREADEN (1 << 12)
47 #define SMBCR_SYNCREAD (1 << 9)
48 #define SMBCR_BMREAD (1 << 8)
49 #define SMBCR_SMBLSPOL (1 << 6)
50 #define SMBCR_WP (1 << 3)
51 #define SMBCR_WAITEN (1 << 2)
52 #define SMBCR_WAITPOL (1 << 1)
53 #define SMBCR_RBLE (1 << 0)
55 #define SMBCR_BURSTLENWRITE_MASK (3 << 18)
56 #define SMBCR_BURSTLENWRITE_4 (0 << 18)
57 #define SMBCR_BURSTLENWRITE_8 (1 << 18)
58 #define SMBCR_BURSTLENWRITE_RESERVED (2 << 18)
59 #define SMBCR_BURSTLENWRITE_CONTINUOUS (3 << 18)
61 #define SMBCR_BURSTLENREAD_MASK (3 << 10)
62 #define SMBCR_BURSTLENREAD_4 (0 << 10)
63 #define SMBCR_BURSTLENREAD_8 (1 << 10)
64 #define SMBCR_BURSTLENREAD_16 (2 << 10)
65 #define SMBCR_BURSTLENREAD_CONTINUOUS (3 << 10)
67 #define SMBCR_MW_MASK (3 << 4)
68 #define SMBCR_MW_8BIT (0 << 4)
69 #define SMBCR_MW_16BIT (1 << 4)
70 #define SMBCR_MW_M32BIT (2 << 4)
72 /* SSMC status registers */
73 #define SSMCCSR (0x200)
74 #define SSMCCR (0x204)
75 #define SSMCITCR (0x208)
76 #define SSMCITIP (0x20C)
77 #define SSMCITIOP (0x210)