/* OLPC machine specific definitions */ #ifndef ASM_OLPC_H_ #define ASM_OLPC_H_ #include <asm/geode.h> struct olpc_platform_t { int flags; uint32_t boardrev; int ecver; }; #define OLPC_F_PRESENT 0x01 #define OLPC_F_DCON 0x02 #define OLPC_F_VSA 0x04 #ifdef CONFIG_OLPC extern struct olpc_platform_t olpc_platform_info; /* * OLPC board IDs contain the major build number within the mask 0x0ff0, * and the minor build number withing 0x000f. Pre-builds have a minor * number less than 8, and normal builds start at 8. For example, 0x0B10 * is a PreB1, and 0x0C18 is a C1. */ static inline uint32_t olpc_board(uint8_t id) { return (id << 4) | 0x8; } static inline uint32_t olpc_board_pre(uint8_t id) { return id << 4; } static inline int machine_is_olpc(void) { return (olpc_platform_info.flags & OLPC_F_PRESENT) ? 1 : 0; } /* * The DCON is OLPC's Display Controller. It has a number of unique * features that we might want to take advantage of.. */ static inline int olpc_has_dcon(void) { return (olpc_platform_info.flags & OLPC_F_DCON) ? 1 : 0; } /* * The VSA is software from AMD that typical Geode bioses will include. * It is used to emulate the PCI bus, VGA, etc. OLPC's Open Firmware does * not include the VSA; instead, PCI is emulated by the kernel. * * The VSA is described further in arch/x86/pci/olpc.c. */ static inline int olpc_has_vsa(void) { return (olpc_platform_info.flags & OLPC_F_VSA) ? 1 : 0; } /* * The "Mass Production" version of OLPC's XO is identified as being model * C2. During the prototype phase, the following models (in chronological * order) were created: A1, B1, B2, B3, B4, C1. The A1 through B2 models * were based on Geode GX CPUs, and models after that were based upon * Geode LX CPUs. There were also some hand-assembled models floating * around, referred to as PreB1, PreB2, etc. */ static inline int olpc_board_at_least(uint32_t rev) { return olpc_platform_info.boardrev >= rev; } #else static inline int machine_is_olpc(void) { return 0; } static inline int olpc_has_dcon(void) { return 0; } static inline int olpc_has_vsa(void) { return 0; } #endif /* EC related functions */ extern int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen, unsigned char *outbuf, size_t outlen); extern int olpc_ec_mask_set(uint8_t bits); extern int olpc_ec_mask_unset(uint8_t bits); /* EC commands */ #define EC_FIRMWARE_REV 0x08 /* SCI source values */ #define EC_SCI_SRC_EMPTY 0x00 #define EC_SCI_SRC_GAME 0x01 #define EC_SCI_SRC_BATTERY 0x02 #define EC_SCI_SRC_BATSOC 0x04 #define EC_SCI_SRC_BATERR 0x08 #define EC_SCI_SRC_EBOOK 0x10 #define EC_SCI_SRC_WLAN 0x20 #define EC_SCI_SRC_ACPWR 0x40 #define EC_SCI_SRC_ALL 0x7F /* GPIO assignments */ #define OLPC_GPIO_MIC_AC geode_gpio(1) #define OLPC_GPIO_DCON_IRQ geode_gpio(7) #define OLPC_GPIO_THRM_ALRM geode_gpio(10) #define OLPC_GPIO_SMB_CLK geode_gpio(14) #define OLPC_GPIO_SMB_DATA geode_gpio(15) #define OLPC_GPIO_WORKAUX geode_gpio(24) #define OLPC_GPIO_LID geode_gpio(26) #define OLPC_GPIO_ECSCI geode_gpio(27) #endif