tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Onboard registers and descriptions for Synergy Microsystems'
3 * "Gemini" boards.
4 *
5 */
6#ifdef __KERNEL__
7#ifndef __PPC_GEMINI_H
8#define __PPC_GEMINI_H
9
10/* Registers */
11
12#define GEMINI_SERIAL_B (0xffeffb00)
13#define GEMINI_SERIAL_A (0xffeffb08)
14#define GEMINI_USWITCH (0xffeffd00)
15#define GEMINI_BREV (0xffeffe00)
16#define GEMINI_BECO (0xffeffe08)
17#define GEMINI_FEAT (0xffeffe10)
18#define GEMINI_BSTAT (0xffeffe18)
19#define GEMINI_CPUSTAT (0xffeffe20)
20#define GEMINI_L2CFG (0xffeffe30)
21#define GEMINI_MEMCFG (0xffeffe38)
22#define GEMINI_FLROM (0xffeffe40)
23#define GEMINI_P0PCI (0xffeffe48)
24#define GEMINI_FLWIN (0xffeffe50)
25#define GEMINI_P0INTMASK (0xffeffe60)
26#define GEMINI_P0INTAP (0xffeffe68)
27#define GEMINI_PCIERR (0xffeffe70)
28#define GEMINI_LEDBASE (0xffeffe80)
29#define GEMINI_RTC (0xffe9fff8)
30#define GEMINI_LEDS 8
31#define GEMINI_SWITCHES 8
32
33
34/* Flash ROM bit definitions */
35#define GEMINI_FLS_WEN (1<<0)
36#define GEMINI_FLS_JMP (1<<6)
37#define GEMINI_FLS_BOOT (1<<7)
38
39/* Memory bit definitions */
40#define GEMINI_MEM_TYPE_MASK 0xc0
41#define GEMINI_MEM_SIZE_MASK 0x38
42#define GEMINI_MEM_BANK_MASK 0x07
43
44/* L2 cache bit definitions */
45#define GEMINI_L2_SIZE_MASK 0xc0
46#define GEMINI_L2_RATIO_MASK 0x03
47
48/* Timebase register bit definitons */
49#define GEMINI_TIMEB0_EN (1<<0)
50#define GEMINI_TIMEB1_EN (1<<1)
51#define GEMINI_TIMEB2_EN (1<<2)
52#define GEMINI_TIMEB3_EN (1<<3)
53
54/* CPU status bit definitions */
55#define GEMINI_CPU_ID_MASK 0x03
56#define GEMINI_CPU_COUNT_MASK 0x0c
57#define GEMINI_CPU0_HALTED (1<<4)
58#define GEMINI_CPU1_HALTED (1<<5)
59#define GEMINI_CPU2_HALTED (1<<6)
60#define GEMINI_CPU3_HALTED (1<<7)
61
62/* Board status bit definitions */
63#define GEMINI_BRD_FAIL (1<<0) /* FAIL led is lit */
64#define GEMINI_BRD_BUS_MASK 0x0c /* PowerPC bus speed */
65
66/* Board family/feature bit descriptions */
67#define GEMINI_FEAT_HAS_FLASH (1<<0)
68#define GEMINI_FEAT_HAS_ETH (1<<1)
69#define GEMINI_FEAT_HAS_SCSI (1<<2)
70#define GEMINI_FEAT_HAS_P0 (1<<3)
71#define GEMINI_FEAT_FAM_MASK 0xf0
72
73/* Mod/ECO bit definitions */
74#define GEMINI_ECO_LEVEL_MASK 0x0f
75#define GEMINI_MOD_MASK 0xf0
76
77/* Type/revision bit definitions */
78#define GEMINI_REV_MASK 0x0f
79#define GEMINI_TYPE_MASK 0xf0
80
81/* User switch definitions */
82#define GEMINI_SWITCH_VERBOSE 1 /* adds "debug" to boot cmd line */
83#define GEMINI_SWITCH_SINGLE_USER 7 /* boots into "single-user" mode */
84
85#define SGS_RTC_CONTROL 0
86#define SGS_RTC_SECONDS 1
87#define SGS_RTC_MINUTES 2
88#define SGS_RTC_HOURS 3
89#define SGS_RTC_DAY 4
90#define SGS_RTC_DAY_OF_MONTH 5
91#define SGS_RTC_MONTH 6
92#define SGS_RTC_YEAR 7
93
94#define SGS_RTC_SET 0x80
95#define SGS_RTC_IS_STOPPED 0x80
96
97#define GRACKLE_CONFIG_ADDR_ADDR (0xfec00000)
98#define GRACKLE_CONFIG_DATA_ADDR (0xfee00000)
99
100#define GEMINI_BOOT_INIT (0xfff00100)
101
102#ifndef __ASSEMBLY__
103
104static inline void grackle_write( unsigned long addr, unsigned long data )
105{
106 __asm__ __volatile__(
107 " stwbrx %1, 0, %0\n \
108 sync\n \
109 stwbrx %3, 0, %2\n \
110 sync "
111 : /* no output */
112 : "r" (GRACKLE_CONFIG_ADDR_ADDR), "r" (addr),
113 "r" (GRACKLE_CONFIG_DATA_ADDR), "r" (data));
114}
115
116static inline unsigned long grackle_read( unsigned long addr )
117{
118 unsigned long val;
119
120 __asm__ __volatile__(
121 " stwbrx %1, 0, %2\n \
122 sync\n \
123 lwbrx %0, 0, %3\n \
124 sync "
125 : "=r" (val)
126 : "r" (addr), "r" (GRACKLE_CONFIG_ADDR_ADDR),
127 "r" (GRACKLE_CONFIG_DATA_ADDR));
128
129 return val;
130}
131
132static inline void gemini_led_on( int led )
133{
134 if (led >= 0 && led < GEMINI_LEDS)
135 *(unsigned char *)(GEMINI_LEDBASE + (led<<3)) = 1;
136}
137
138static inline void gemini_led_off(int led)
139{
140 if (led >= 0 && led < GEMINI_LEDS)
141 *(unsigned char *)(GEMINI_LEDBASE + (led<<3)) = 0;
142}
143
144static inline int gemini_led_val(int led)
145{
146 int val = 0;
147 if (led >= 0 && led < GEMINI_LEDS)
148 val = *(unsigned char *)(GEMINI_LEDBASE + (led<<3));
149 return (val & 0x1);
150}
151
152/* returns processor id from the board */
153static inline int gemini_processor(void)
154{
155 unsigned char cpu = *(unsigned char *)(GEMINI_CPUSTAT);
156 return (int) ((cpu == 0) ? 4 : (cpu & GEMINI_CPU_ID_MASK));
157}
158
159
160extern void _gemini_reboot(void);
161extern void gemini_prom_init(void);
162extern void gemini_init_l2(void);
163#endif /* __ASSEMBLY__ */
164#endif
165#endif /* __KERNEL__ */