Andres Salomon | 3ef0e1f | 2008-04-29 00:59:53 -0700 | [diff] [blame] | 1 | /* OLPC machine specific definitions */ |
| 2 | |
Vegard Nossum | 77ef50a | 2008-06-18 17:08:48 +0200 | [diff] [blame^] | 3 | #ifndef ASM_X86__OLPC_H |
| 4 | #define ASM_X86__OLPC_H |
Andres Salomon | 3ef0e1f | 2008-04-29 00:59:53 -0700 | [diff] [blame] | 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 | |
Vegard Nossum | 77ef50a | 2008-06-18 17:08:48 +0200 | [diff] [blame^] | 132 | #endif /* ASM_X86__OLPC_H */ |