1 /* AM33v2 on-board bus controller registers
3 * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
12 #ifndef _ASM_BUSCTL_REGS_H
13 #define _ASM_BUSCTL_REGS_H
15 #include <asm/cpu-regs.h>
19 /* bus controller registers */
20 #define BCCR __SYSREG(0xc0002000, u32) /* bus controller control reg */
21 #define BCCR_B0AD 0x00000003 /* block 0 (80000000-83ffffff) bus allocation */
22 #define BCCR_B1AD 0x0000000c /* block 1 (84000000-87ffffff) bus allocation */
23 #define BCCR_B2AD 0x00000030 /* block 2 (88000000-8bffffff) bus allocation */
24 #define BCCR_B3AD 0x000000c0 /* block 3 (8c000000-8fffffff) bus allocation */
25 #define BCCR_B4AD 0x00000300 /* block 4 (90000000-93ffffff) bus allocation */
26 #define BCCR_B5AD 0x00000c00 /* block 5 (94000000-97ffffff) bus allocation */
27 #define BCCR_B6AD 0x00003000 /* block 6 (98000000-9bffffff) bus allocation */
28 #define BCCR_B7AD 0x0000c000 /* block 7 (9c000000-9fffffff) bus allocation */
29 #define BCCR_BxAD_EXBUS 0x0 /* - direct to system bus controller */
30 #define BCCR_BxAD_OPEXBUS 0x1 /* - direct to memory bus controller */
31 #define BCCR_BxAD_OCMBUS 0x2 /* - direct to on chip memory */
32 #define BCCR_API 0x00070000 /* bus arbitration priority */
33 #define BCCR_API_DMACICD 0x00000000 /* - DMA > CI > CD */
34 #define BCCR_API_DMACDCI 0x00010000 /* - DMA > CD > CI */
35 #define BCCR_API_CICDDMA 0x00020000 /* - CI > CD > DMA */
36 #define BCCR_API_CDCIDMA 0x00030000 /* - CD > CI > DMA */
37 #define BCCR_API_ROUNDROBIN 0x00040000 /* - round robin */
38 #define BCCR_BEPRI_DMACICD 0x00c00000 /* bus error address priority */
39 #define BCCR_BEPRI_DMACDCI 0x00000000 /* - DMA > CI > CD */
40 #define BCCR_BEPRI_CICDDMA 0x00400000 /* - DMA > CD > CI */
41 #define BCCR_BEPRI_CDCIDMA 0x00800000 /* - CI > CD > DMA */
42 #define BCCR_BEPRI 0x00c00000 /* - CD > CI > DMA */
43 #define BCCR_TMON 0x03000000 /* timeout value settings */
44 #define BCCR_TMON_16IOCLK 0x00000000 /* - 16 IOCLK cycles */
45 #define BCCR_TMON_256IOCLK 0x01000000 /* - 256 IOCLK cycles */
46 #define BCCR_TMON_4096IOCLK 0x02000000 /* - 4096 IOCLK cycles */
47 #define BCCR_TMON_65536IOCLK 0x03000000 /* - 65536 IOCLK cycles */
48 #define BCCR_TMOE 0x10000000 /* timeout detection enable */
50 #define BCBERR __SYSREG(0xc0002010, u32) /* bus error source reg */
51 #define BCBERR_BESB 0x0000001f /* erroneous access destination space */
52 #define BCBERR_BESB_MON 0x00000001 /* - monitor space */
53 #define BCBERR_BESB_IO 0x00000002 /* - IO bus */
54 #define BCBERR_BESB_EX 0x00000004 /* - EX bus */
55 #define BCBERR_BESB_OPEX 0x00000008 /* - OpEX bus */
56 #define BCBERR_BESB_OCM 0x00000010 /* - on chip memory */
57 #define BCBERR_BERW 0x00000100 /* type of access */
58 #define BCBERR_BERW_WRITE 0x00000000 /* - write */
59 #define BCBERR_BERW_READ 0x00000100 /* - read */
60 #define BCBERR_BESD 0x00000200 /* error detector */
61 #define BCBERR_BESD_BCU 0x00000000 /* - BCU detected error */
62 #define BCBERR_BESD_SLAVE_BUS 0x00000200 /* - slave bus detected error */
63 #define BCBERR_BEBST 0x00000400 /* type of access */
64 #define BCBERR_BEBST_SINGLE 0x00000000 /* - single */
65 #define BCBERR_BEBST_BURST 0x00000400 /* - burst */
66 #define BCBERR_BEME 0x00000800 /* multiple bus error flag */
67 #define BCBERR_BEMR 0x00007000 /* master bus that caused the error */
68 #define BCBERR_BEMR_NOERROR 0x00000000 /* - no error */
69 #define BCBERR_BEMR_CI 0x00001000 /* - CPU instruction fetch bus caused error */
70 #define BCBERR_BEMR_CD 0x00002000 /* - CPU data bus caused error */
71 #define BCBERR_BEMR_DMA 0x00004000 /* - DMA bus caused error */
73 #define BCBEAR __SYSREGC(0xc0002020, u32) /* bus error address reg */
75 /* system bus controller registers */
76 #define SBBASE(X) __SYSREG(0xd8c00100 + (X) * 0x10, u32) /* SBC base addr regs */
77 #define SBBASE_BE 0x00000001 /* bank enable */
78 #define SBBASE_BAM 0x0000fffe /* bank address mask [31:17] */
79 #define SBBASE_BBA 0xfffe0000 /* bank base address [31:17] */
81 #define SBCNTRL0(X) __SYSREG(0xd8c00200 + (X) * 0x10, u32) /* SBC bank ctrl0 regs */
82 #define SBCNTRL0_WEH 0x00000f00 /* write enable hold */
83 #define SBCNTRL0_REH 0x0000f000 /* read enable hold */
84 #define SBCNTRL0_RWH 0x000f0000 /* SRW signal hold */
85 #define SBCNTRL0_CSH 0x00f00000 /* chip select hold */
86 #define SBCNTRL0_DAH 0x0f000000 /* data hold */
87 #define SBCNTRL0_ADH 0xf0000000 /* address hold */
89 #define SBCNTRL1(X) __SYSREG(0xd8c00204 + (X) * 0x10, u32) /* SBC bank ctrl1 regs */
90 #define SBCNTRL1_WED 0x00000f00 /* write enable delay */
91 #define SBCNTRL1_RED 0x0000f000 /* read enable delay */
92 #define SBCNTRL1_RWD 0x000f0000 /* SRW signal delay */
93 #define SBCNTRL1_ASW 0x00f00000 /* address strobe width */
94 #define SBCNTRL1_CSD 0x0f000000 /* chip select delay */
95 #define SBCNTRL1_ASD 0xf0000000 /* address strobe delay */
97 #define SBCNTRL2(X) __SYSREG(0xd8c00208 + (X) * 0x10, u32) /* SBC bank ctrl2 regs */
98 #define SBCNTRL2_WC 0x000000ff /* wait count */
99 #define SBCNTRL2_BWC 0x00000f00 /* burst wait count */
100 #define SBCNTRL2_WM 0x01000000 /* wait mode setting */
101 #define SBCNTRL2_WM_FIXEDWAIT 0x00000000 /* - fixed wait access */
102 #define SBCNTRL2_WM_HANDSHAKE 0x01000000 /* - handshake access */
103 #define SBCNTRL2_BM 0x02000000 /* bus synchronisation mode */
104 #define SBCNTRL2_BM_SYNC 0x00000000 /* - synchronous mode */
105 #define SBCNTRL2_BM_ASYNC 0x02000000 /* - asynchronous mode */
106 #define SBCNTRL2_BW 0x04000000 /* bus width */
107 #define SBCNTRL2_BW_32 0x00000000 /* - 32 bits */
108 #define SBCNTRL2_BW_16 0x04000000 /* - 16 bits */
109 #define SBCNTRL2_RWINV 0x08000000 /* R/W signal invert polarity */
110 #define SBCNTRL2_RWINV_NORM 0x00000000 /* - normal (read high) */
111 #define SBCNTRL2_RWINV_INV 0x08000000 /* - inverted (read low) */
112 #define SBCNTRL2_BT 0x70000000 /* bus type setting */
113 #define SBCNTRL2_BT_SRAM 0x00000000 /* - SRAM interface */
114 #define SBCNTRL2_BT_ADMUX 0x00000000 /* - addr/data multiplexed interface */
115 #define SBCNTRL2_BT_BROM 0x00000000 /* - burst ROM interface */
116 #define SBCNTRL2_BTSE 0x80000000 /* burst enable */
118 /* memory bus controller */
119 #define SDBASE(X) __SYSREG(0xda000008 + (X) * 0x4, u32) /* MBC base addr regs */
120 #define SDBASE_CE 0x00000001 /* chip enable */
121 #define SDBASE_CBAM 0x0000fff0 /* chip base address mask [31:20] */
122 #define SDBASE_CBAM_SHIFT 16
123 #define SDBASE_CBA 0xfff00000 /* chip base address [31:20] */
125 #define SDRAMBUS __SYSREG(0xda000000, u32) /* bus mode control reg */
126 #define SDRAMBUS_REFEN 0x00000004 /* refresh enable */
127 #define SDRAMBUS_TRC 0x00000018 /* refresh command delay time */
128 #define SDRAMBUS_BSTPT 0x00000020 /* burst stop command enable */
129 #define SDRAMBUS_PONSEQ 0x00000040 /* power on sequence */
130 #define SDRAMBUS_SELFREQ 0x00000080 /* self-refresh mode request */
131 #define SDRAMBUS_SELFON 0x00000100 /* self-refresh mode on */
132 #define SDRAMBUS_SIZE 0x00030000 /* SDRAM size */
133 #define SDRAMBUS_SIZE_64Mbit 0x00010000 /* 64Mbit SDRAM (x16) */
134 #define SDRAMBUS_SIZE_128Mbit 0x00020000 /* 128Mbit SDRAM (x16) */
135 #define SDRAMBUS_SIZE_256Mbit 0x00030000 /* 256Mbit SDRAM (x16) */
136 #define SDRAMBUS_TRASWAIT 0x000c0000 /* row address precharge command cycle number */
137 #define SDRAMBUS_REFNUM 0x00300000 /* refresh command number */
138 #define SDRAMBUS_BSTWAIT 0x00c00000 /* burst stop command cycle */
139 #define SDRAMBUS_SETWAIT 0x03000000 /* mode register setting command cycle */
140 #define SDRAMBUS_PREWAIT 0x0c000000 /* precharge command cycle */
141 #define SDRAMBUS_RASLATE 0x30000000 /* RAS latency */
142 #define SDRAMBUS_CASLATE 0xc0000000 /* CAS latency */
144 #define SDREFCNT __SYSREG(0xda000004, u32) /* refresh period reg */
145 #define SDREFCNT_PERI 0x00000fff /* refresh period */
147 #define SDSHDW __SYSREG(0xda000010, u32) /* test reg */
149 #endif /* __KERNEL__ */
151 #endif /* _ASM_BUSCTL_REGS_H */
