aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-sparc64/bbc.h
blob: 423a85800aaef06515eee56bb623ab83eda1d4ca (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
/*
 * bbc.h: Defines for BootBus Controller found on UltraSPARC-III
 *        systems.
 *
 * Copyright (C) 2000 David S. Miller (davem@redhat.com)
 */

#ifndef _SPARC64_BBC_H
#define _SPARC64_BBC_H

/* Register sizes are indicated by "B" (Byte, 1-byte),
 * "H" (Half-word, 2 bytes), "W" (Word, 4 bytes) or
 * "Q" (Quad, 8 bytes) inside brackets.
 */

#define BBC_AID		0x00	/* [B] Agent ID			*/
#define BBC_DEVP	0x01	/* [B] Device Present		*/
#define BBC_ARB		0x02	/* [B] Arbitration		*/
#define BBC_QUIESCE	0x03	/* [B] Quiesce			*/
#define BBC_WDACTION	0x04	/* [B] Watchdog Action		*/
#define BBC_SPG		0x06	/* [B] Soft POR Gen		*/
#define BBC_SXG		0x07	/* [B] Soft XIR Gen		*/
#define BBC_PSRC	0x08	/* [W] POR Source		*/
#define BBC_XSRC	0x0c	/* [B] XIR Source		*/
#define BBC_CSC		0x0d	/* [B] Clock Synthesizers Control*/
#define BBC_ES_CTRL	0x0e	/* [H] Energy Star Control	*/
#define BBC_ES_ACT	0x10	/* [W] E* Assert Change Time	*/
#define BBC_ES_DACT	0x14	/* [B] E* De-Assert Change Time	*/
#define BBC_ES_DABT	0x15	/* [B] E* De-Assert Bypass Time	*/
#define BBC_ES_ABT	0x16	/* [H] E* Assert Bypass Time	*/
#define BBC_ES_PST	0x18	/* [W] E* PLL Settle Time	*/
#define BBC_ES_FSL	0x1c	/* [W] E* Frequency Switch Latency*/
#define BBC_EBUST	0x20	/* [Q] EBUS Timing		*/
#define BBC_JTAG_CMD	0x28	/* [W] JTAG+ Command		*/
#define BBC_JTAG_CTRL	0x2c	/* [B] JTAG+ Control		*/
#define BBC_I2C_SEL	0x2d	/* [B] I2C Selection		*/
#define BBC_I2C_0_S1	0x2e	/* [B] I2C ctrlr-0 reg S1	*/
#define BBC_I2C_0_S0	0x2f	/* [B] I2C ctrlr-0 regs S0,S0',S2,S3*/
#define BBC_I2C_1_S1	0x30	/* [B] I2C ctrlr-1 reg S1	*/
#define BBC_I2C_1_S0	0x31	/* [B] I2C ctrlr-1 regs S0,S0',S2,S3*/
#define BBC_KBD_BEEP	0x32	/* [B] Keyboard Beep		*/
#define BBC_KBD_BCNT	0x34	/* [W] Keyboard Beep Counter	*/

#define BBC_REGS_SIZE	0x40

/* There is a 2K scratch ram area at offset 0x80000 but I doubt
 * we will use it for anything.
 */

/* Agent ID register.  This register shows the Safari Agent ID
 * for the processors.  The value returned depends upon which
 * cpu is reading the register.
 */
#define BBC_AID_ID	0x07	/* Safari ID		*/
#define BBC_AID_RESV	0xf8	/* Reserved		*/

/* Device Present register.  One can determine which cpus are actually
 * present in the machine by interrogating this register.
 */
#define BBC_DEVP_CPU0	0x01	/* Processor 0 present	*/
#define BBC_DEVP_CPU1	0x02	/* Processor 1 present	*/
#define BBC_DEVP_CPU2	0x04	/* Processor 2 present	*/
#define BBC_DEVP_CPU3	0x08	/* Processor 3 present	*/
#define BBC_DEVP_RESV	0xf0	/* Reserved		*/

/* Arbitration register.  This register is used to block access to
 * the BBC from a particular cpu.
 */
#define BBC_ARB_CPU0	0x01	/* Enable cpu 0 BBC arbitratrion */
#define BBC_ARB_CPU1	0x02	/* Enable cpu 1 BBC arbitratrion */
#define BBC_ARB_CPU2	0x04	/* Enable cpu 2 BBC arbitratrion */
#define BBC_ARB_CPU3	0x08	/* Enable cpu 3 BBC arbitratrion */
#define BBC_ARB_RESV	0xf0	/* Reserved			 */

/* Quiesce register.  Bus and BBC segments for cpus can be disabled
 * with this register, ie. for hot plugging.
 */
#define BBC_QUIESCE_S02	0x01	/* Quiesce Safari segment for cpu 0 and 2 */
#define BBC_QUIESCE_S13	0x02	/* Quiesce Safari segment for cpu 1 and 3 */
#define BBC_QUIESCE_B02	0x04	/* Quiesce BBC segment for cpu 0 and 2    */
#define BBC_QUIESCE_B13	0x08	/* Quiesce BBC segment for cpu 1 and 3    */
#define BBC_QUIESCE_FD0 0x10	/* Disable Fatal_Error[0] reporting	  */
#define BBC_QUIESCE_FD1 0x20	/* Disable Fatal_Error[1] reporting	  */
#define BBC_QUIESCE_FD2 0x40	/* Disable Fatal_Error[2] reporting	  */
#define BBC_QUIESCE_FD3 0x80	/* Disable Fatal_Error[3] reporting	  */

/* Watchdog Action register.  When the watchdog device timer expires
 * a line is enabled to the BBC.  The action BBC takes when this line
 * is asserted can be controlled by this regiser.
 */
#define BBC_WDACTION_RST  0x01	/* When set, watchdog causes system reset.
				 * When clear, BBC ignores watchdog signal.
				 */
#define BBC_WDACTION_RESV 0xfe	/* Reserved */

/* Soft_POR_GEN register.  The POR (Power On Reset) signal may be asserted
 * for specific processors or all processors via this register.
 */
#define BBC_SPG_CPU0	0x01 /* Assert POR for processor 0	*/
#define BBC_SPG_CPU1	0x02 /* Assert POR for processor 1	*/
#define BBC_SPG_CPU2	0x04 /* Assert POR for processor 2	*/
#define BBC_SPG_CPU3	0x08 /* Assert POR for processor 3	*/
#define BBC_SPG_CPUALL	0x10 /* Reset all processors and reset
			      * the entire system.
			      */
#define BBC_SPG_RESV	0xe0 /* Reserved			*/

/* Soft_XIR_GEN register.  The XIR (eXternally Initiated Reset) signal
 * may be asserted to specific processors via this register.
 */
#define BBC_SXG_CPU0	0x01 /* Assert XIR for processor 0	*/
#define BBC_SXG_CPU1	0x02 /* Assert XIR for processor 1	*/
#define BBC_SXG_CPU2	0x04 /* Assert XIR for processor 2	*/
#define BBC_SXG_CPU3	0x08 /* Assert XIR for processor 3	*/
#define BBC_SXG_RESV	0xf0 /* Reserved			*/

/* POR Source register.  One may identify the cause of the most recent
 * reset by reading this register.
 */
#define BBC_PSRC_SPG0	0x0001 /* CPU 0 reset via BBC_SPG register	*/
#define BBC_PSRC_SPG1	0x0002 /* CPU 1 reset via BBC_SPG register	*/
#define BBC_PSRC_SPG2	0x0004 /* CPU 2 reset via BBC_SPG register	*/
#define BBC_PSRC_SPG3	0x0008 /* CPU 3 reset via BBC_SPG register	*/
#define BBC_PSRC_SPGSYS	0x0010 /* System reset via BBC_SPG register	*/
#define BBC_PSRC_JTAG	0x0020 /* System reset via JTAG+		*/
#define BBC_PSRC_BUTTON	0x0040 /* System reset via push-button dongle	*/
#define BBC_PSRC_PWRUP	0x0080 /* System reset via power-up		*/
#define BBC_PSRC_FE0	0x0100 /* CPU 0 reported Fatal_Error		*/
#define BBC_PSRC_FE1	0x0200 /* CPU 1 reported Fatal_Error		*/
#define BBC_PSRC_FE2	0x0400 /* CPU 2 reported Fatal_Error		*/
#define BBC_PSRC_FE3	0x0800 /* CPU 3 reported Fatal_Error		*/
#define BBC_PSRC_FE4	0x1000 /* Schizo reported Fatal_Error		*/
#define BBC_PSRC_FE5	0x2000 /* Safari device 5 reported Fatal_Error	*/
#define BBC_PSRC_FE6	0x4000 /* CPMS reported Fatal_Error		*/
#define BBC_PSRC_SYNTH	0x8000 /* System reset when on-board clock synthesizers
				* were updated.
				*/
#define BBC_PSRC_WDT   0x10000 /* System reset via Super I/O watchdog	*/
#define BBC_PSRC_RSC   0x20000 /* System reset via RSC remote monitoring
				* device
				*/

/* XIR Source register.  The source of an XIR event sent to a processor may
 * be determined via this register.
 */
#define BBC_XSRC_SXG0	0x01	/* CPU 0 received XIR via Soft_XIR_GEN reg */
#define BBC_XSRC_SXG1	0x02	/* CPU 1 received XIR via Soft_XIR_GEN reg */
#define BBC_XSRC_SXG2	0x04	/* CPU 2 received XIR via Soft_XIR_GEN reg */
#define BBC_XSRC_SXG3	0x08	/* CPU 3 received XIR via Soft_XIR_GEN reg */
#define BBC_XSRC_JTAG	0x10	/* All CPUs received XIR via JTAG+         */
#define BBC_XSRC_W_OR_B	0x20	/* All CPUs received XIR either because:
				 * a) Super I/O watchdog fired, or
				 * b) XIR push button was activated
				 */
#define BBC_XSRC_RESV	0xc0	/* Reserved				   */

/* Clock Synthesizers Control register.  This register provides the big-bang
 * programming interface to the two clock synthesizers of the machine.
 */
#define BBC_CSC_SLOAD	0x01	/* Directly connected to S_LOAD pins	*/
#define BBC_CSC_SDATA	0x02	/* Directly connected to S_DATA pins	*/
#define BBC_CSC_SCLOCK	0x04	/* Directly connected to S_CLOCK pins	*/
#define BBC_CSC_RESV	0x78	/* Reserved				*/
#define BBC_CSC_RST	0x80	/* Generate system reset when S_LOAD==1	*/

/* Energy Star Control register.  This register is used to generate the
 * clock frequency change trigger to the main system devices (Schizo and
 * the processors).  The transition occurs when bits in this register
 * go from 0 to 1, only one bit must be set at once else no action
 * occurs.  Basically the sequence of events is:
 * a) Choose new frequency: full, 1/2 or 1/32
 * b) Program this desired frequency into the cpus and Schizo.
 * c) Set the same value in this register.
 * d) 16 system clocks later, clear this register.
 */
#define BBC_ES_CTRL_1_1		0x01	/* Full frequency	*/
#define BBC_ES_CTRL_1_2		0x02	/* 1/2 frequency	*/
#define BBC_ES_CTRL_1_32	0x20	/* 1/32 frequency	*/
#define BBC_ES_RESV		0xdc	/* Reserved		*/

/* Energy Star Assert Change Time register.  This determines the number
 * of BBC clock cycles (which is half the system frequency) between
 * the detection of FREEZE_ACK being asserted and the assertion of
 * the CLK_CHANGE_L[2:0] signals.
 */
#define BBC_ES_ACT_VAL	0xff

/* Energy Star Assert Bypass Time register.  This determines the number
 * of BBC clock cycles (which is half the system frequency) between
 * the assertion of the CLK_CHANGE_L[2:0] signals and the assertion of
 * the ESTAR_PLL_BYPASS signal.
 */
#define BBC_ES_ABT_VAL	0xffff

/* Energy Star PLL Settle Time register.  This determines the number of
 * BBC clock cycles (which is half the system frequency) between the
 * de-assertion of CLK_CHANGE_L[2:0] and the de-assertion of the FREEZE_L
 * signal.
 */
#define BBC_ES_PST_VAL	0xffffffff

/* Energy Star Frequency Switch Latency register.  This is the number of
 * BBC clocks between the de-assertion of CLK_CHANGE_L[2:0] and the first
 * edge of the Safari clock at the new frequency.
 */
#define BBC_ES_FSL_VAL	0xffffffff

/* Keyboard Beep control register.  This is a simple enabler for the audio
 * beep sound.
 */
#define BBC_KBD_BEEP_ENABLE	0x01 /* Enable beep	*/
#define BBC_KBD_BEEP_RESV	0xfe /* Reserved	*/

/* Keyboard Beep Counter register.  There is a free-running counter inside
 * the BBC which runs at half the system clock.  The bit set in this register
 * determines when the audio sound is generated.  So for example if bit
 * 10 is set, the audio beep will oscillate at 1/(2**12).  The keyboard beep
 * generator automatically selects a different bit to use if the system clock
 * is changed via Energy Star.
 */
#define BBC_KBD_BCNT_BITS	0x0007fc00
#define BBC_KBC_BCNT_RESV	0xfff803ff

#endif /* _SPARC64_BBC_H */