[PATCH v3 1/4] acpi: use 64-bit addresses in FADT table

[Heinrich Schuchardt]

Fields X_FIRMWAE_CTRL and X_DSDT must be 64bit wide. Convert pointers to
to uintptr_t to fill these.

If field X_FIRMWARE_CTRL is filled, field FIRMWARE must be ignored. If
field X_DSDT is filled, field DSDT must be ignored. We should not fill
unused fields.

See the field definitions in chapter "5.2.9 Fixed ACPI Description Table
(FADT)" of the ACPI Specification 6.5.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
---
 arch/x86/cpu/baytrail/acpi.c | 9 +++------
 arch/x86/cpu/quark/acpi.c    | 9 +++------
 arch/x86/cpu/tangier/acpi.c  | 9 +++------
 arch/x86/lib/acpi_table.c    | 9 ++-------
 include/acpi/acpi_table.h    | 6 ++----
 5 files changed, 13 insertions(+), 29 deletions(-)

diff --git a/arch/x86/cpu/baytrail/acpi.c b/arch/x86/cpu/baytrail/acpi.c
index 4378846f8b..ccc4851b18 100644
--- a/arch/x86/cpu/baytrail/acpi.c
+++ b/arch/x86/cpu/baytrail/acpi.c
@@ -7,6 +7,7 @@
 #include <cpu.h>
 #include <dm.h>
 #include <log.h>
+#include <mapmem.h>
 #include <acpi/acpi_s3.h>
 #include <acpi/acpi_table.h>
 #include <asm/io.h>
@@ -31,8 +32,6 @@ static int baytrail_write_fadt(struct acpi_ctx *ctx,
 	header->length = sizeof(struct acpi_fadt);
 	header->revision = 4;
 
-	fadt->firmware_ctrl = (u32)ctx->facs;
-	fadt->dsdt = (u32)ctx->dsdt;
 	fadt->preferred_pm_profile = ACPI_PM_MOBILE;
 	fadt->sci_int = 9;
 	fadt->smi_cmd = 0;
@@ -79,10 +78,8 @@ static int baytrail_write_fadt(struct acpi_ctx *ctx,
 	fadt->reset_reg.addrh = 0;
 	fadt->reset_value = SYS_RST | RST_CPU | FULL_RST;
 
-	fadt->x_firmware_ctl_l = (u32)ctx->facs;
-	fadt->x_firmware_ctl_h = 0;
-	fadt->x_dsdt_l = (u32)ctx->dsdt;
-	fadt->x_dsdt_h = 0;
+	fadt->x_firmware_ctrl = map_to_sysmem(ctx->facs);
+	fadt->x_dsdt = map_to_sysmem(ctx->dsdt);
 
 	fadt->x_pm1a_evt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_pm1a_evt_blk.bit_width = fadt->pm1_evt_len * 8;
diff --git a/arch/x86/cpu/quark/acpi.c b/arch/x86/cpu/quark/acpi.c
index 9a2d682451..0e18ceab68 100644
--- a/arch/x86/cpu/quark/acpi.c
+++ b/arch/x86/cpu/quark/acpi.c
@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <mapmem.h>
 #include <acpi/acpi_table.h>
 #include <asm/processor.h>
 #include <asm/tables.h>
@@ -26,8 +27,6 @@ static int quark_write_fadt(struct acpi_ctx *ctx,
 	header->length = sizeof(struct acpi_fadt);
 	header->revision = 4;
 
-	fadt->firmware_ctrl = (u32)ctx->facs;
-	fadt->dsdt = (u32)ctx->dsdt;
 	fadt->preferred_pm_profile = ACPI_PM_UNSPECIFIED;
 	fadt->sci_int = 9;
 	fadt->smi_cmd = 0;
@@ -74,10 +73,8 @@ static int quark_write_fadt(struct acpi_ctx *ctx,
 	fadt->reset_reg.addrh = 0;
 	fadt->reset_value = SYS_RST | RST_CPU | FULL_RST;
 
-	fadt->x_firmware_ctl_l = (u32)ctx->facs;
-	fadt->x_firmware_ctl_h = 0;
-	fadt->x_dsdt_l = (u32)ctx->dsdt;
-	fadt->x_dsdt_h = 0;
+	fadt->x_firmware_ctrl = map_to_sysmem(ctx->facs);
+	fadt->x_dsdt = map_to_sysmem(ctx->dsdt);
 
 	fadt->x_pm1a_evt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
 	fadt->x_pm1a_evt_blk.bit_width = fadt->pm1_evt_len * 8;
diff --git a/arch/x86/cpu/tangier/acpi.c b/arch/x86/cpu/tangier/acpi.c
index 1c667c7d56..1d37cc9e2b 100644
--- a/arch/x86/cpu/tangier/acpi.c
+++ b/arch/x86/cpu/tangier/acpi.c
@@ -8,6 +8,7 @@
 #include <common.h>
 #include <cpu.h>
 #include <dm.h>
+#include <mapmem.h>
 #include <acpi/acpi_table.h>
 #include <asm/ioapic.h>
 #include <asm/mpspec.h>
@@ -31,8 +32,6 @@ static int tangier_write_fadt(struct acpi_ctx *ctx,
 	header->length = sizeof(struct acpi_fadt);
 	header->revision = 6;
 
-	fadt->firmware_ctrl = (u32)ctx->facs;
-	fadt->dsdt = (u32)ctx->dsdt;
 	fadt->preferred_pm_profile = ACPI_PM_UNSPECIFIED;
 
 	fadt->iapc_boot_arch = ACPI_FADT_VGA_NOT_PRESENT |
@@ -45,10 +44,8 @@ static int tangier_write_fadt(struct acpi_ctx *ctx,
 
 	fadt->minor_revision = 2;
 
-	fadt->x_firmware_ctl_l = (u32)ctx->facs;
-	fadt->x_firmware_ctl_h = 0;
-	fadt->x_dsdt_l = (u32)ctx->dsdt;
-	fadt->x_dsdt_h = 0;
+	fadt->x_firmware_ctrl = map_to_sysmem(ctx->facs);
+	fadt->x_dsdt = map_to_sysmem(ctx->dsdt);
 
 	header->checksum = table_compute_checksum(fadt, header->length);
 
diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c
index c5b33dc65d..ef738c02a6 100644
--- a/arch/x86/lib/acpi_table.c
+++ b/arch/x86/lib/acpi_table.c
@@ -572,13 +572,8 @@ void acpi_fadt_common(struct acpi_fadt *fadt, struct acpi_facs *facs,
 	memcpy(header->aslc_id, ASLC_ID, 4);
 	header->aslc_revision = 1;
 
-	fadt->firmware_ctrl = (unsigned long)facs;
-	fadt->dsdt = (unsigned long)dsdt;
-
-	fadt->x_firmware_ctl_l = (unsigned long)facs;
-	fadt->x_firmware_ctl_h = 0;
-	fadt->x_dsdt_l = (unsigned long)dsdt;
-	fadt->x_dsdt_h = 0;
+	fadt->x_firmware_ctrl = map_to_sysmem(facs);
+	fadt->x_dsdt = map_to_sysmem(dsdt);
 
 	fadt->preferred_pm_profile = ACPI_PM_MOBILE;
 
diff --git a/include/acpi/acpi_table.h b/include/acpi/acpi_table.h
index 20ac3b51ba..e67562ef65 100644
--- a/include/acpi/acpi_table.h
+++ b/include/acpi/acpi_table.h
@@ -228,10 +228,8 @@ struct __packed acpi_fadt {
 	u8 reset_value;
 	u16 arm_boot_arch;
 	u8 minor_revision;
-	u32 x_firmware_ctl_l;
-	u32 x_firmware_ctl_h;
-	u32 x_dsdt_l;
-	u32 x_dsdt_h;
+	u64 x_firmware_ctrl;
+	u64 x_dsdt;
 	struct acpi_gen_regaddr x_pm1a_evt_blk;
 	struct acpi_gen_regaddr x_pm1b_evt_blk;
 	struct acpi_gen_regaddr x_pm1a_cnt_blk;
-- 
2.40.1