ACPI S3: Split arch-agnostic parts

Change-Id: I9fc2d1cdbb280f781045882bc4ac98c67946953e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42614
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/acpi/Makefile.inc

@@ -3,6 +3,7 @@
 ifeq ($(CONFIG_HAVE_ACPI_TABLES),y)
 
 ramstage-y += acpi.c
+ramstage-y += acpi_pm.c
 ramstage-y += acpigen.c
 ramstage-y += acpigen_dptf.c
 ramstage-y += acpigen_dsm.c
@@ -15,6 +16,8 @@ ramstage-y += pld.c
 ramstage-y += sata.c
 ramstage-y += soundwire.c
 
+postcar-y += acpi_pm.c
+
 ifneq ($(wildcard src/mainboard/$(MAINBOARDDIR)/acpi_tables.c),)
 ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/acpi_tables.c
 endif

src/acpi/acpi_pm.c

@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpi.h>
+#include <console/console.h>
+#include <romstage_handoff.h>
+
+/* This is filled with acpi_handoff_wakeup_s3() call early in ramstage. */
+static int acpi_slp_type = -1;
+
+static void acpi_handoff_wakeup(void)
+{
+	if (acpi_slp_type < 0) {
+		if (romstage_handoff_is_resume()) {
+			printk(BIOS_DEBUG, "S3 Resume\n");
+			acpi_slp_type = ACPI_S3;
+		} else {
+			printk(BIOS_DEBUG, "Normal boot\n");
+			acpi_slp_type = ACPI_S0;
+		}
+	}
+}
+
+int acpi_handoff_wakeup_s3(void)
+{
+	acpi_handoff_wakeup();
+	return (acpi_slp_type == ACPI_S3);
+}
+
+void __weak mainboard_suspend_resume(void)
+{
+}

src/arch/x86/Makefile.inc

@@ -158,7 +158,6 @@ endif # CONFIG_ARCH_VERSTAGE_X86_32 / CONFIG_ARCH_VERSTAGE_X86_64
 
 ifeq ($(CONFIG_ARCH_ROMSTAGE_X86_32)$(CONFIG_ARCH_ROMSTAGE_X86_64),y)
 
-romstage-$(CONFIG_HAVE_ACPI_RESUME) += acpi_s3.c
 romstage-y += boot.c
 romstage-y += post.c
 # gdt_init.S is included by entry32.inc when romstage is the first C
@@ -202,7 +201,6 @@ $(eval $(call create_class_compiler,postcar,x86_64))
 endif
 postcar-generic-ccopts += -D__POSTCAR__
 
-postcar-$(CONFIG_HAVE_ACPI_RESUME) += acpi_s3.c
 postcar-y += boot.c
 postcar-y += post.c
 postcar-y += gdt_init.S

src/arch/x86/acpi_s3.c

@@ -8,33 +8,6 @@
 #include <cpu/x86/smm.h>
 #include <fallback.h>
 #include <timestamp.h>
-#include <romstage_handoff.h>
-
-#if ENV_RAMSTAGE || ENV_POSTCAR
-
-/* This is filled with acpi_is_wakeup_s3() call early in ramstage. */
-static int acpi_slp_type = -1;
-
-static void acpi_handoff_wakeup(void)
-{
-	if (acpi_slp_type < 0) {
-		if (romstage_handoff_is_resume()) {
-			printk(BIOS_DEBUG, "S3 Resume\n");
-			acpi_slp_type = ACPI_S3;
-		} else {
-			printk(BIOS_DEBUG, "Normal boot\n");
-			acpi_slp_type = ACPI_S0;
-		}
-	}
-}
-
-int acpi_is_wakeup_s3(void)
-{
-	acpi_handoff_wakeup();
-	return (acpi_slp_type == ACPI_S3);
-}
-
-#endif /* ENV_RAMSTAGE */
 
 #define WAKEUP_BASE 0x600
 
@@ -43,10 +16,6 @@ asmlinkage void (*acpi_do_wakeup)(uintptr_t vector) = (void *)WAKEUP_BASE;
 extern unsigned char __wakeup;
 extern unsigned int __wakeup_size;
 
-void __weak mainboard_suspend_resume(void)
-{
-}
-
 void __noreturn acpi_resume(void *wake_vec)
 {
 	/* Restore GNVS pointer in SMM if found. */

src/include/acpi/acpi.h

@@ -1017,6 +1017,7 @@ unsigned long acpi_create_hest_error_source(acpi_hest_t *hest,
 void __noreturn acpi_resume(void *wake_vec);
 void mainboard_suspend_resume(void);
 void *acpi_find_wakeup_vector(void);
+int acpi_handoff_wakeup_s3(void);
 
 /* ACPI_Sn assignments are defined to always equal the sleep state numbers */
 enum {
@@ -1062,20 +1063,16 @@ static inline int acpi_s3_resume_allowed(void)
 	return CONFIG(HAVE_ACPI_RESUME);
 }
 
-#if CONFIG(HAVE_ACPI_RESUME)
-
-#if ENV_ROMSTAGE_OR_BEFORE
 static inline int acpi_is_wakeup_s3(void)
 {
-	return (acpi_get_sleep_type() == ACPI_S3);
-}
-#else
-int acpi_is_wakeup_s3(void);
-#endif
+	if (!acpi_s3_resume_allowed())
+		return 0;
 
-#else
-static inline int acpi_is_wakeup_s3(void) { return 0; }
-#endif
+	if (ENV_ROMSTAGE_OR_BEFORE)
+		return (acpi_get_sleep_type() == ACPI_S3);
+
+	return acpi_handoff_wakeup_s3();
+}
 
 static inline uintptr_t acpi_align_current(uintptr_t current)
 {