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Diffstat (limited to 'include/asm-x86/olpc.h')
-rw-r--r-- | include/asm-x86/olpc.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/include/asm-x86/olpc.h b/include/asm-x86/olpc.h new file mode 100644 index 0000000..97d4713 --- /dev/null +++ b/include/asm-x86/olpc.h @@ -0,0 +1,132 @@ +/* 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 |