[PATCH v2 1/7] acpi: Kconfig symbol CONFIG_QFW_ACPI

[Heinrich Schuchardt]

We have two implementations of write_acpi_tables(). One for writing ACPI
tables based on ACPI_WRITER() entries another based on copying tables from
QEMU.

Create a symbol CONFIG_QFW_ACPI that signifies copying ACPI tables from
QEMU and use it consistently.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
---
v2:
	new patch
---
 drivers/misc/Kconfig   | 7 +++++++
 drivers/misc/qfw.c     | 4 ++--
 lib/acpi/Makefile      | 2 +-
 lib/acpi/acpi_writer.c | 4 ++--
 4 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 97057de8bf..86529efb2e 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -540,6 +540,13 @@ config QFW
 	  Hidden option to enable QEMU fw_cfg interface and uclass. This will
 	  be selected by either CONFIG_CMD_QFW or CONFIG_GENERATE_ACPI_TABLE.
 
+config QFW_ACPI
+	bool
+	default y
+	depends on QFW && GENERATE_ACPI_TABLE && !SANDBOX
+	help
+	  Hidden option to read ACPI tables from QEMU.
+
 config QFW_PIO
 	bool
 	depends on QFW
diff --git a/drivers/misc/qfw.c b/drivers/misc/qfw.c
index e3b6b4cd74..307334faf4 100644
--- a/drivers/misc/qfw.c
+++ b/drivers/misc/qfw.c
@@ -21,7 +21,7 @@
 #include <tables_csum.h>
 #include <asm/acpi_table.h>
 
-#if defined(CONFIG_GENERATE_ACPI_TABLE) && !defined(CONFIG_SANDBOX)
+#ifdef QFW_ACPI
 /*
  * This function allocates memory for ACPI tables
  *
@@ -259,7 +259,7 @@ ulong acpi_get_rsdp_addr(void)
 	file = qfw_find_file(dev, "etc/acpi/rsdp");
 	return file->addr;
 }
-#endif
+#endif /* QFW_ACPI */
 
 static void qfw_read_entry_io(struct qfw_dev *qdev, u16 entry, u32 size,
 			      void *address)
diff --git a/lib/acpi/Makefile b/lib/acpi/Makefile
index c1c9675b5d..cc2868488a 100644
--- a/lib/acpi/Makefile
+++ b/lib/acpi/Makefile
@@ -12,7 +12,7 @@ obj-$(CONFIG_$(SPL_)ACPIGEN) += acpi_table.o
 obj-y += acpi_writer.o
 
 # With QEMU the ACPI tables come from there, not from U-Boot
-ifndef CONFIG_QEMU
+ifndef CONFIG_QFW_ACPI
 obj-y += base.o
 obj-y += csrt.o
 obj-y += mcfg.o
diff --git a/lib/acpi/acpi_writer.c b/lib/acpi/acpi_writer.c
index 946f90e8e7..9b9fdc190b 100644
--- a/lib/acpi/acpi_writer.c
+++ b/lib/acpi/acpi_writer.c
@@ -48,7 +48,7 @@ int acpi_write_one(struct acpi_ctx *ctx, const struct acpi_writer *entry)
 	return 0;
 }
 
-#ifndef CONFIG_QEMU
+#ifndef CONFIG_QFW_ACPI
 static int acpi_write_all(struct acpi_ctx *ctx)
 {
 	const struct acpi_writer *writer =
@@ -115,7 +115,7 @@ ulong acpi_get_rsdp_addr(void)
 
 	return map_to_sysmem(gd->acpi_ctx->rsdp);
 }
-#endif /* QEMU */
+#endif /* QFW_ACPI */
 
 void acpi_setup_ctx(struct acpi_ctx *ctx, ulong start)
 {
-- 
2.40.1