x86: acpi: Refactor acpi_resume()
To do something more in acpi_resume() like turning on ACPI mode,
we need locate ACPI FADT table pointer first. But currently this
is done in acpi_find_wakeup_vector().
This changes acpi_resume() signature to accept ACPI FADT pointer
as the parameter. A new API acpi_find_fadt() is introduced, and
acpi_find_wakeup_vector() is updated to use FADT pointer as the
parameter as well.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Stefan Roese <sr@denx.de>
diff --git a/arch/x86/include/asm/acpi_s3.h b/arch/x86/include/asm/acpi_s3.h
index b8d14f4..1ad20f4 100644
--- a/arch/x86/include/asm/acpi_s3.h
+++ b/arch/x86/include/asm/acpi_s3.h
@@ -99,15 +99,16 @@
*/
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.
*
- * @wake_vec: OS wake up vector
+ * @fadt: FADT table pointer in the ACPI table
* @return: Never returns
*/
-void acpi_resume(void *wake_vec);
+void acpi_resume(struct acpi_fadt *fadt);
#endif /* __ASSEMBLY__ */
diff --git a/arch/x86/include/asm/acpi_table.h b/arch/x86/include/asm/acpi_table.h
index e96409b..dd7a946 100644
--- a/arch/x86/include/asm/acpi_table.h
+++ b/arch/x86/include/asm/acpi_table.h
@@ -328,6 +328,15 @@
ulong write_acpi_tables(ulong start);
/**
+ * acpi_find_fadt() - find ACPI FADT table in the sytem memory
+ *
+ * This routine parses the ACPI table to locate the ACPI FADT table.
+ *
+ * @return: a pointer to the ACPI FADT table in the system memory
+ */
+struct acpi_fadt *acpi_find_fadt(void);
+
+/**
* acpi_find_wakeup_vector() - find OS installed wake up vector address
*
* This routine parses the ACPI table to locate the wake up vector installed
@@ -335,4 +344,4 @@
*
* @return: wake up vector address installed by the OS
*/
-void *acpi_find_wakeup_vector(void);
+void *acpi_find_wakeup_vector(struct acpi_fadt *);