135 lines
2.9 KiB
C
135 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* Copyright (C) 2017, Bin Meng <bmeng.cn@gmail.com>
|
|
*/
|
|
|
|
#ifndef __ASM_ACPI_S3_H__
|
|
#define __ASM_ACPI_S3_H__
|
|
|
|
#define WAKEUP_BASE 0x600
|
|
|
|
/* PM1_STATUS register */
|
|
#define WAK_STS (1 << 15)
|
|
#define PCIEXPWAK_STS (1 << 14)
|
|
#define RTC_STS (1 << 10)
|
|
#define SLPBTN_STS (1 << 9)
|
|
#define PWRBTN_STS (1 << 8)
|
|
#define GBL_STS (1 << 5)
|
|
#define BM_STS (1 << 4)
|
|
#define TMR_STS (1 << 0)
|
|
|
|
/* PM1_CNT register */
|
|
#define SLP_EN (1 << 13)
|
|
#define SLP_TYP_SHIFT 10
|
|
#define SLP_TYP (7 << SLP_TYP_SHIFT)
|
|
#define SLP_TYP_S0 0
|
|
#define SLP_TYP_S1 1
|
|
#define SLP_TYP_S3 5
|
|
#define SLP_TYP_S4 6
|
|
#define SLP_TYP_S5 7
|
|
|
|
/* PM1_STS register */
|
|
#define RTC_EN BIT(10)
|
|
#define PWRBTN_EN BIT(8)
|
|
|
|
/* Memory size reserved for S3 resume */
|
|
#define S3_RESERVE_SIZE 0x1000
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
extern char __wakeup[];
|
|
extern int __wakeup_size;
|
|
|
|
enum acpi_sleep_state {
|
|
ACPI_S0,
|
|
ACPI_S1,
|
|
ACPI_S2,
|
|
ACPI_S3,
|
|
ACPI_S4,
|
|
ACPI_S5,
|
|
};
|
|
|
|
/**
|
|
* acpi_ss_string() - get ACPI-defined sleep state string
|
|
*
|
|
* @pm1_cnt: ACPI-defined sleep state
|
|
* @return: a pointer to the sleep state string.
|
|
*/
|
|
static inline char *acpi_ss_string(enum acpi_sleep_state state)
|
|
{
|
|
char *ss_string[] = { "S0", "S1", "S2", "S3", "S4", "S5"};
|
|
|
|
return ss_string[state];
|
|
}
|
|
|
|
/**
|
|
* acpi_sleep_from_pm1() - get ACPI-defined sleep state from PM1_CNT register
|
|
*
|
|
* @pm1_cnt: PM1_CNT register value
|
|
* @return: ACPI-defined sleep state if given valid PM1_CNT register value,
|
|
* -EINVAL otherwise.
|
|
*/
|
|
static inline enum acpi_sleep_state acpi_sleep_from_pm1(u32 pm1_cnt)
|
|
{
|
|
switch ((pm1_cnt & SLP_TYP) >> SLP_TYP_SHIFT) {
|
|
case SLP_TYP_S0:
|
|
return ACPI_S0;
|
|
case SLP_TYP_S1:
|
|
return ACPI_S1;
|
|
case SLP_TYP_S3:
|
|
return ACPI_S3;
|
|
case SLP_TYP_S4:
|
|
return ACPI_S4;
|
|
case SLP_TYP_S5:
|
|
return ACPI_S5;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
/**
|
|
* chipset_prev_sleep_state() - Get chipset previous sleep state
|
|
*
|
|
* This returns chipset previous sleep state from ACPI registers.
|
|
* Platform codes must supply this routine in order to support ACPI S3.
|
|
*
|
|
* @return ACPI_S0/S1/S2/S3/S4/S5.
|
|
*/
|
|
enum acpi_sleep_state chipset_prev_sleep_state(void);
|
|
|
|
/**
|
|
* chipset_clear_sleep_state() - Clear chipset sleep state
|
|
*
|
|
* This clears chipset sleep state in ACPI registers.
|
|
* Platform codes must supply this routine in order to support ACPI S3.
|
|
*/
|
|
void chipset_clear_sleep_state(void);
|
|
|
|
struct acpi_fadt;
|
|
/**
|
|
* acpi_resume() - Do ACPI S3 resume
|
|
*
|
|
* This calls U-Boot wake up assembly stub and jumps to OS's wake up vector.
|
|
*
|
|
* @fadt: FADT table pointer in the ACPI table
|
|
* @return: Never returns
|
|
*/
|
|
void acpi_resume(struct acpi_fadt *fadt);
|
|
|
|
/**
|
|
* acpi_s3_reserve() - Reserve memory for ACPI S3 resume
|
|
*
|
|
* This copies memory where real mode interrupt handler stubs reside to the
|
|
* reserved place on the stack.
|
|
*
|
|
* This routine should be called by reserve_arch() before U-Boot is relocated
|
|
* when ACPI S3 resume is enabled.
|
|
*
|
|
* @return: 0 always
|
|
*/
|
|
int acpi_s3_reserve(void);
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* __ASM_ACPI_S3_H__ */
|