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authorSimon Glass <sjg@chromium.org>2020-04-08 16:57:35 -0600
committerBin Meng <bmeng.cn@gmail.com>2020-04-16 14:36:28 +0800
commit3cabcf966d42649cd60eb575c9cf5c22eb9e9123 (patch)
tree650176e845ef2d1e04a4dbc34e4e4eae4dc5f66e /include/acpi
parentf50cc9528850ed546b44894cdc7ab4ceb4b30550 (diff)
x86: Move acpi_s3.h to include/acpi/
This header relates to ACPI and we are about to add some more ACPI headers. Move this one into a new directory so they are together. The header inclusion in pci_rom.c is not specific to x86 anymore, so drop the #ifdef CONFIG_X86. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/acpi_s3.h130
1 files changed, 130 insertions, 0 deletions
diff --git a/include/acpi/acpi_s3.h b/include/acpi/acpi_s3.h
new file mode 100644
index 0000000000..baa848dcd1
--- /dev/null
+++ b/include/acpi/acpi_s3.h
@@ -0,0 +1,130 @@
+/* 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
+
+/* 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__ */