Commit | Line | Data |
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3ef0e1f8 AS |
1 | /* OLPC machine specific definitions */ |
2 | ||
1965aae3 PA |
3 | #ifndef _ASM_X86_OLPC_H |
4 | #define _ASM_X86_OLPC_H | |
3ef0e1f8 AS |
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 | #define OLPC_F_VSA 0x04 | |
17 | ||
18 | #ifdef CONFIG_OLPC | |
19 | ||
20 | extern struct olpc_platform_t olpc_platform_info; | |
21 | ||
22 | /* | |
23 | * OLPC board IDs contain the major build number within the mask 0x0ff0, | |
24 | * and the minor build number withing 0x000f. Pre-builds have a minor | |
25 | * number less than 8, and normal builds start at 8. For example, 0x0B10 | |
26 | * is a PreB1, and 0x0C18 is a C1. | |
27 | */ | |
28 | ||
29 | static inline uint32_t olpc_board(uint8_t id) | |
30 | { | |
31 | return (id << 4) | 0x8; | |
32 | } | |
33 | ||
34 | static inline uint32_t olpc_board_pre(uint8_t id) | |
35 | { | |
36 | return id << 4; | |
37 | } | |
38 | ||
39 | static inline int machine_is_olpc(void) | |
40 | { | |
41 | return (olpc_platform_info.flags & OLPC_F_PRESENT) ? 1 : 0; | |
42 | } | |
43 | ||
44 | /* | |
45 | * The DCON is OLPC's Display Controller. It has a number of unique | |
46 | * features that we might want to take advantage of.. | |
47 | */ | |
48 | static inline int olpc_has_dcon(void) | |
49 | { | |
50 | return (olpc_platform_info.flags & OLPC_F_DCON) ? 1 : 0; | |
51 | } | |
52 | ||
53 | /* | |
54 | * The VSA is software from AMD that typical Geode bioses will include. | |
55 | * It is used to emulate the PCI bus, VGA, etc. OLPC's Open Firmware does | |
56 | * not include the VSA; instead, PCI is emulated by the kernel. | |
57 | * | |
58 | * The VSA is described further in arch/x86/pci/olpc.c. | |
59 | */ | |
60 | static inline int olpc_has_vsa(void) | |
61 | { | |
62 | return (olpc_platform_info.flags & OLPC_F_VSA) ? 1 : 0; | |
63 | } | |
64 | ||
65 | /* | |
66 | * The "Mass Production" version of OLPC's XO is identified as being model | |
67 | * C2. During the prototype phase, the following models (in chronological | |
68 | * order) were created: A1, B1, B2, B3, B4, C1. The A1 through B2 models | |
69 | * were based on Geode GX CPUs, and models after that were based upon | |
70 | * Geode LX CPUs. There were also some hand-assembled models floating | |
71 | * around, referred to as PreB1, PreB2, etc. | |
72 | */ | |
73 | static inline int olpc_board_at_least(uint32_t rev) | |
74 | { | |
75 | return olpc_platform_info.boardrev >= rev; | |
76 | } | |
77 | ||
78 | #else | |
79 | ||
80 | static inline int machine_is_olpc(void) | |
81 | { | |
82 | return 0; | |
83 | } | |
84 | ||
85 | static inline int olpc_has_dcon(void) | |
86 | { | |
87 | return 0; | |
88 | } | |
89 | ||
90 | static inline int olpc_has_vsa(void) | |
91 | { | |
92 | return 0; | |
93 | } | |
94 | ||
95 | #endif | |
96 | ||
97 | /* EC related functions */ | |
98 | ||
99 | extern int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen, | |
100 | unsigned char *outbuf, size_t outlen); | |
101 | ||
102 | extern int olpc_ec_mask_set(uint8_t bits); | |
103 | extern int olpc_ec_mask_unset(uint8_t bits); | |
104 | ||
105 | /* EC commands */ | |
106 | ||
107 | #define EC_FIRMWARE_REV 0x08 | |
108 | ||
109 | /* SCI source values */ | |
110 | ||
111 | #define EC_SCI_SRC_EMPTY 0x00 | |
112 | #define EC_SCI_SRC_GAME 0x01 | |
113 | #define EC_SCI_SRC_BATTERY 0x02 | |
114 | #define EC_SCI_SRC_BATSOC 0x04 | |
115 | #define EC_SCI_SRC_BATERR 0x08 | |
116 | #define EC_SCI_SRC_EBOOK 0x10 | |
117 | #define EC_SCI_SRC_WLAN 0x20 | |
118 | #define EC_SCI_SRC_ACPWR 0x40 | |
119 | #define EC_SCI_SRC_ALL 0x7F | |
120 | ||
121 | /* GPIO assignments */ | |
122 | ||
123 | #define OLPC_GPIO_MIC_AC geode_gpio(1) | |
124 | #define OLPC_GPIO_DCON_IRQ geode_gpio(7) | |
125 | #define OLPC_GPIO_THRM_ALRM geode_gpio(10) | |
126 | #define OLPC_GPIO_SMB_CLK geode_gpio(14) | |
127 | #define OLPC_GPIO_SMB_DATA geode_gpio(15) | |
128 | #define OLPC_GPIO_WORKAUX geode_gpio(24) | |
129 | #define OLPC_GPIO_LID geode_gpio(26) | |
130 | #define OLPC_GPIO_ECSCI geode_gpio(27) | |
131 | ||
1965aae3 | 132 | #endif /* _ASM_X86_OLPC_H */ |