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/* 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
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