include/asm/bbc.h

2  * bbc.h: Defines for BootBus Controller found on UltraSPARC-III
11 /* Register sizes are indicated by "B" (Byte, 1-byte),
12  * "H" (Half-word, 2 bytes), "W" (Word, 4 bytes) or
25 #define BBC_CSC		0x0d	/* [B] Clock Synthesizers Control*/
28 #define BBC_ES_DACT	0x14	/* [B] E* De-Assert Change Time	*/
29 #define BBC_ES_DABT	0x15	/* [B] E* De-Assert Bypass Time	*/
32 #define BBC_ES_FSL	0x1c	/* [W] E* Frequency Switch Latency*/
37 #define BBC_I2C_0_S1	0x2e	/* [B] I2C ctrlr-0 reg S1	*/
38 #define BBC_I2C_0_S0	0x2f	/* [B] I2C ctrlr-0 regs S0,S0',S2,S3*/
39 #define BBC_I2C_1_S1	0x30	/* [B] I2C ctrlr-1 reg S1	*/
40 #define BBC_I2C_1_S0	0x31	/* [B] I2C ctrlr-1 regs S0,S0',S2,S3*/
126 #define BBC_PSRC_BUTTON	0x0040 /* System reset via push-button dongle	*/
127 #define BBC_PSRC_PWRUP	0x0080 /* System reset via power-up		*/
135 #define BBC_PSRC_SYNTH	0x8000 /* System reset when on-board clock synthesizers
157 /* Clock Synthesizers Control register.  This register provides the big-bang
158  * programming interface to the two clock synthesizers of the machine.
167  * clock frequency change trigger to the main system devices (Schizo and
171  * a) Choose new frequency: full, 1/2 or 1/32
172  * b) Program this desired frequency into the cpus and Schizo.
176 #define BBC_ES_CTRL_1_1		0x01	/* Full frequency	*/
177 #define BBC_ES_CTRL_1_2		0x02	/* 1/2 frequency	*/
178 #define BBC_ES_CTRL_1_32	0x20	/* 1/32 frequency	*/
182  * of BBC clock cycles (which is half the system frequency) between
189  * of BBC clock cycles (which is half the system frequency) between
196  * BBC clock cycles (which is half the system frequency) between the
197  * de-assertion of CLK_CHANGE_L[2:0] and the de-assertion of the FREEZE_L
202 /* Energy Star Frequency Switch Latency register.  This is the number of
203  * BBC clocks between the de-assertion of CLK_CHANGE_L[2:0] and the first
204  * edge of the Safari clock at the new frequency.
214 /* Keyboard Beep Counter register.  There is a free-running counter inside
215  * the BBC which runs at half the system clock.  The bit set in this register
218  * generator automatically selects a different bit to use if the system clock