133 строки
3.0 KiB
C
133 строки
3.0 KiB
C
/* OLPC machine specific definitions */
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#ifndef ASM_X86__OLPC_H
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#define ASM_X86__OLPC_H
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#include <asm/geode.h>
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struct olpc_platform_t {
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int flags;
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uint32_t boardrev;
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int ecver;
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};
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#define OLPC_F_PRESENT 0x01
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#define OLPC_F_DCON 0x02
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#define OLPC_F_VSA 0x04
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#ifdef CONFIG_OLPC
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extern struct olpc_platform_t olpc_platform_info;
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/*
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* OLPC board IDs contain the major build number within the mask 0x0ff0,
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* and the minor build number withing 0x000f. Pre-builds have a minor
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* number less than 8, and normal builds start at 8. For example, 0x0B10
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* is a PreB1, and 0x0C18 is a C1.
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*/
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static inline uint32_t olpc_board(uint8_t id)
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{
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return (id << 4) | 0x8;
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}
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static inline uint32_t olpc_board_pre(uint8_t id)
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{
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return id << 4;
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}
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static inline int machine_is_olpc(void)
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{
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return (olpc_platform_info.flags & OLPC_F_PRESENT) ? 1 : 0;
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}
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/*
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* The DCON is OLPC's Display Controller. It has a number of unique
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* features that we might want to take advantage of..
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*/
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static inline int olpc_has_dcon(void)
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{
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return (olpc_platform_info.flags & OLPC_F_DCON) ? 1 : 0;
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}
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/*
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* The VSA is software from AMD that typical Geode bioses will include.
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* It is used to emulate the PCI bus, VGA, etc. OLPC's Open Firmware does
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* not include the VSA; instead, PCI is emulated by the kernel.
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*
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* The VSA is described further in arch/x86/pci/olpc.c.
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*/
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static inline int olpc_has_vsa(void)
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{
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return (olpc_platform_info.flags & OLPC_F_VSA) ? 1 : 0;
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}
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/*
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* The "Mass Production" version of OLPC's XO is identified as being model
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* C2. During the prototype phase, the following models (in chronological
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* order) were created: A1, B1, B2, B3, B4, C1. The A1 through B2 models
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* were based on Geode GX CPUs, and models after that were based upon
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* Geode LX CPUs. There were also some hand-assembled models floating
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* around, referred to as PreB1, PreB2, etc.
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*/
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static inline int olpc_board_at_least(uint32_t rev)
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{
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return olpc_platform_info.boardrev >= rev;
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}
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#else
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static inline int machine_is_olpc(void)
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{
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return 0;
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}
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static inline int olpc_has_dcon(void)
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{
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return 0;
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}
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static inline int olpc_has_vsa(void)
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{
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return 0;
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}
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#endif
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/* EC related functions */
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extern int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen,
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unsigned char *outbuf, size_t outlen);
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extern int olpc_ec_mask_set(uint8_t bits);
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extern int olpc_ec_mask_unset(uint8_t bits);
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/* EC commands */
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#define EC_FIRMWARE_REV 0x08
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/* SCI source values */
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#define EC_SCI_SRC_EMPTY 0x00
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#define EC_SCI_SRC_GAME 0x01
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#define EC_SCI_SRC_BATTERY 0x02
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#define EC_SCI_SRC_BATSOC 0x04
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#define EC_SCI_SRC_BATERR 0x08
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#define EC_SCI_SRC_EBOOK 0x10
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#define EC_SCI_SRC_WLAN 0x20
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#define EC_SCI_SRC_ACPWR 0x40
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#define EC_SCI_SRC_ALL 0x7F
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/* GPIO assignments */
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#define OLPC_GPIO_MIC_AC geode_gpio(1)
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#define OLPC_GPIO_DCON_IRQ geode_gpio(7)
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#define OLPC_GPIO_THRM_ALRM geode_gpio(10)
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#define OLPC_GPIO_SMB_CLK geode_gpio(14)
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#define OLPC_GPIO_SMB_DATA geode_gpio(15)
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#define OLPC_GPIO_WORKAUX geode_gpio(24)
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#define OLPC_GPIO_LID geode_gpio(26)
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#define OLPC_GPIO_ECSCI geode_gpio(27)
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#endif /* ASM_X86__OLPC_H */
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