1 /* OLPC machine specific definitions */
2
3 #ifndef _ASM_X86_OLPC_H
4 #define _ASM_X86_OLPC_H
5
6 #include <asm/geode.h>
7
8 struct olpc_platform_t {
9 int flags;
10 uint32_t boardrev;
11 int ecver;
12 };
13
14 #define OLPC_F_PRESENT 0x01
15 #define OLPC_F_DCON 0x02
16
17 #ifdef CONFIG_OLPC
18
19 extern struct olpc_platform_t olpc_platform_info;
20
21 /*
22 * OLPC board IDs contain the major build number within the mask 0x0ff0,
23 * and the minor build number within 0x000f. Pre-builds have a minor
24 * number less than 8, and normal builds start at 8. For example, 0x0B10
25 * is a PreB1, and 0x0C18 is a C1.
26 */
27
olpc_board(uint8_t id)28 static inline uint32_t olpc_board(uint8_t id)
29 {
30 return (id << 4) | 0x8;
31 }
32
olpc_board_pre(uint8_t id)33 static inline uint32_t olpc_board_pre(uint8_t id)
34 {
35 return id << 4;
36 }
37
machine_is_olpc(void)38 static inline int machine_is_olpc(void)
39 {
40 return (olpc_platform_info.flags & OLPC_F_PRESENT) ? 1 : 0;
41 }
42
43 /*
44 * The DCON is OLPC's Display Controller. It has a number of unique
45 * features that we might want to take advantage of..
46 */
olpc_has_dcon(void)47 static inline int olpc_has_dcon(void)
48 {
49 return (olpc_platform_info.flags & OLPC_F_DCON) ? 1 : 0;
50 }
51
52 /*
53 * The "Mass Production" version of OLPC's XO is identified as being model
54 * C2. During the prototype phase, the following models (in chronological
55 * order) were created: A1, B1, B2, B3, B4, C1. The A1 through B2 models
56 * were based on Geode GX CPUs, and models after that were based upon
57 * Geode LX CPUs. There were also some hand-assembled models floating
58 * around, referred to as PreB1, PreB2, etc.
59 */
olpc_board_at_least(uint32_t rev)60 static inline int olpc_board_at_least(uint32_t rev)
61 {
62 return olpc_platform_info.boardrev >= rev;
63 }
64
65 #else
66
machine_is_olpc(void)67 static inline int machine_is_olpc(void)
68 {
69 return 0;
70 }
71
olpc_has_dcon(void)72 static inline int olpc_has_dcon(void)
73 {
74 return 0;
75 }
76
77 #endif
78
79 extern int pci_olpc_init(void);
80
81 /* EC related functions */
82
83 extern int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen,
84 unsigned char *outbuf, size_t outlen);
85
86 extern int olpc_ec_mask_set(uint8_t bits);
87 extern int olpc_ec_mask_unset(uint8_t bits);
88
89 /* EC commands */
90
91 #define EC_FIRMWARE_REV 0x08
92 #define EC_WLAN_ENTER_RESET 0x35
93 #define EC_WLAN_LEAVE_RESET 0x25
94
95 /* SCI source values */
96
97 #define EC_SCI_SRC_EMPTY 0x00
98 #define EC_SCI_SRC_GAME 0x01
99 #define EC_SCI_SRC_BATTERY 0x02
100 #define EC_SCI_SRC_BATSOC 0x04
101 #define EC_SCI_SRC_BATERR 0x08
102 #define EC_SCI_SRC_EBOOK 0x10
103 #define EC_SCI_SRC_WLAN 0x20
104 #define EC_SCI_SRC_ACPWR 0x40
105 #define EC_SCI_SRC_ALL 0x7F
106
107 /* GPIO assignments */
108
109 #define OLPC_GPIO_MIC_AC 1
110 #define OLPC_GPIO_DCON_STAT0 5
111 #define OLPC_GPIO_DCON_STAT1 6
112 #define OLPC_GPIO_DCON_IRQ 7
113 #define OLPC_GPIO_THRM_ALRM geode_gpio(10)
114 #define OLPC_GPIO_DCON_LOAD 11
115 #define OLPC_GPIO_DCON_BLANK 12
116 #define OLPC_GPIO_SMB_CLK 14
117 #define OLPC_GPIO_SMB_DATA 15
118 #define OLPC_GPIO_WORKAUX geode_gpio(24)
119 #define OLPC_GPIO_LID geode_gpio(26)
120 #define OLPC_GPIO_ECSCI geode_gpio(27)
121
122 #endif /* _ASM_X86_OLPC_H */
123