[PATCH v1 1/1] Revert "x86: Move FACP table into separate functions"

Andy Shevchenko andriy.shevchenko at linux.intel.com
Wed Mar 30 17:49:18 CEST 2022


Before the culprit patch (see BugLink for the details):

  => acpi list
  Name      Base   Size  Detail
  ----  --------  -----  ------
  RSDP  000e4500     24  v02 U-BOOT
  RSDT  000e4530     38  v01 U-BOOT U-BOOTBL 20220401 INTL 0
  XSDT  000e45e0     4c  v01 U-BOOT U-BOOTBL 20220401 INTL 0
  CSRT  000e5490     58  v00 U-BOOT U-BOOTBL 20220401 INTL 0
  FACP  000e54f0    114  v06 U-BOOT U-BOOTBL 20220401 INTL 0
  DSDT  000e4780    c06  v02 U-BOOT U-BOOTBL 10000 INTL 20200925
  FACS  000e4740     40
  MCFG  000e5610     3c  v01 U-BOOT U-BOOTBL 20220401 INTL 0
  SPCR  000e5650     50  v02 U-BOOT U-BOOTBL 20220401 INTL 0
  APIC  000e56a0     48  v02 U-BOOT U-BOOTBL 20220401 INTL 0

After the culprit patch:

  => acpi list
  Name      Base   Size  Detail
  ----  --------  -----  ------
  RSDP  000e4500     24  v02 U-BOOT
  RSDT  000e4530     34  v01 U-BOOT U-BOOTBL 20220401 INTL 0
  XSDT  000e45e0     44  v01 U-BOOT U-BOOTBL 20220401 INTL 0
  CSRT  000e53a0     58  v00 U-BOOT U-BOOTBL 20220401 INTL 0
  MCFG  000e5520     3c  v01 U-BOOT U-BOOTBL 20220401 INTL 0
  SPCR  000e5560     50  v02 U-BOOT U-BOOTBL 20220401 INTL 0
  APIC  000e55b0     48  v02 U-BOOT U-BOOTBL 20220401 INTL 0

As a result Linux kernel can't find mandatory tables and fails
to boot.

Hence, revert it for good.

This reverts commit 379d3c1fd6aa490b1ad5697525cfc89b615cf25a.

BugLink: https://lore.kernel.org/all/20220131225930.GJ7515@bill-the-cat/
Signed-off-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
---
 arch/x86/cpu/apollolake/acpi.c    | 17 ++++-------------
 arch/x86/cpu/baytrail/acpi.c      | 27 ++++++++-------------------
 arch/x86/cpu/quark/acpi.c         | 27 ++++++++-------------------
 arch/x86/cpu/tangier/acpi.c       | 25 ++++++++-----------------
 arch/x86/include/asm/acpi_table.h |  2 ++
 arch/x86/lib/acpi_table.c         | 15 +++++++++++++++
 6 files changed, 45 insertions(+), 68 deletions(-)

diff --git a/arch/x86/cpu/apollolake/acpi.c b/arch/x86/cpu/apollolake/acpi.c
index a3dd7373af0d..fd21c0b49684 100644
--- a/arch/x86/cpu/apollolake/acpi.c
+++ b/arch/x86/cpu/apollolake/acpi.c
@@ -146,25 +146,16 @@ void fill_fadt(struct acpi_fadt *fadt)
 	fadt->x_pm_tmr_blk.addrl = IOMAP_ACPI_BASE + PM1_TMR;
 }
 
-static int apl_write_fadt(struct acpi_ctx *ctx, const struct acpi_writer *entry)
+void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs,
+		      void *dsdt)
 {
-	struct acpi_table_header *header;
-	struct acpi_fadt *fadt;
+	struct acpi_table_header *header = &fadt->header;
 
-	fadt = ctx->current;
-	acpi_fadt_common(fadt, ctx->facs, ctx->dsdt);
+	acpi_fadt_common(fadt, facs, dsdt);
 	intel_acpi_fill_fadt(fadt);
 	fill_fadt(fadt);
-	header = &fadt->header;
 	header->checksum = table_compute_checksum(fadt, header->length);
-
-	acpi_add_table(ctx, fadt);
-
-	acpi_inc(ctx, sizeof(struct acpi_fadt));
-
-	return 0;
 }
-ACPI_WRITER(5fadt, "FACS", apl_write_fadt, 0);
 
 int apl_acpi_fill_dmar(struct acpi_ctx *ctx)
 {
diff --git a/arch/x86/cpu/baytrail/acpi.c b/arch/x86/cpu/baytrail/acpi.c
index 59db2e2c5d84..07757b88a305 100644
--- a/arch/x86/cpu/baytrail/acpi.c
+++ b/arch/x86/cpu/baytrail/acpi.c
@@ -15,24 +15,20 @@
 #include <asm/arch/iomap.h>
 #include <dm/uclass-internal.h>
 
-static int baytrail_write_fadt(struct acpi_ctx *ctx,
-			       const struct acpi_writer *entry)
+void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs,
+		      void *dsdt)
 {
-	struct acpi_table_header *header;
-	struct acpi_fadt *fadt;
-
-	fadt = ctx->current;
-	header = &fadt->header;
+	struct acpi_table_header *header = &(fadt->header);
 	u16 pmbase = ACPI_BASE_ADDRESS;
 
-	memset(fadt, '\0', sizeof(struct acpi_fadt));
+	memset((void *)fadt, 0, sizeof(struct acpi_fadt));
 
 	acpi_fill_header(header, "FACP");
 	header->length = sizeof(struct acpi_fadt);
 	header->revision = 4;
 
-	fadt->firmware_ctrl = (u32)ctx->facs;
-	fadt->dsdt = (u32)ctx->dsdt;
+	fadt->firmware_ctrl = (u32)facs;
+	fadt->dsdt = (u32)dsdt;
 	fadt->preferred_pm_profile = ACPI_PM_MOBILE;
 	fadt->sci_int = 9;
 	fadt->smi_cmd = 0;
@@ -79,9 +75,9 @@ 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_l = (u32)facs;
 	fadt->x_firmware_ctl_h = 0;
-	fadt->x_dsdt_l = (u32)ctx->dsdt;
+	fadt->x_dsdt_l = (u32)dsdt;
 	fadt->x_dsdt_h = 0;
 
 	fadt->x_pm1a_evt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
@@ -141,14 +137,7 @@ static int baytrail_write_fadt(struct acpi_ctx *ctx,
 	fadt->x_gpe1_blk.addrh = 0x0;
 
 	header->checksum = table_compute_checksum(fadt, header->length);
-
-	acpi_add_table(ctx, fadt);
-
-	acpi_inc(ctx, sizeof(struct acpi_fadt));
-
-	return 0;
 }
-ACPI_WRITER(5fadt, "FACP", baytrail_write_fadt, 0);
 
 int acpi_create_gnvs(struct acpi_global_nvs *gnvs)
 {
diff --git a/arch/x86/cpu/quark/acpi.c b/arch/x86/cpu/quark/acpi.c
index 9ce9ee3aabf9..82b776ff65f6 100644
--- a/arch/x86/cpu/quark/acpi.c
+++ b/arch/x86/cpu/quark/acpi.c
@@ -10,24 +10,20 @@
 #include <asm/arch/global_nvs.h>
 #include <asm/arch/iomap.h>
 
-static int quark_write_fadt(struct acpi_ctx *ctx,
-			    const struct acpi_writer *entry)
+void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs,
+		      void *dsdt)
 {
+	struct acpi_table_header *header = &(fadt->header);
 	u16 pmbase = ACPI_PM1_BASE_ADDRESS;
-	struct acpi_table_header *header;
-	struct acpi_fadt *fadt;
 
-	fadt = ctx->current;
-	header = &fadt->header;
-
-	memset(fadt, '\0', sizeof(struct acpi_fadt));
+	memset((void *)fadt, 0, sizeof(struct acpi_fadt));
 
 	acpi_fill_header(header, "FACP");
 	header->length = sizeof(struct acpi_fadt);
 	header->revision = 4;
 
-	fadt->firmware_ctrl = (u32)ctx->facs;
-	fadt->dsdt = (u32)ctx->dsdt;
+	fadt->firmware_ctrl = (u32)facs;
+	fadt->dsdt = (u32)dsdt;
 	fadt->preferred_pm_profile = ACPI_PM_UNSPECIFIED;
 	fadt->sci_int = 9;
 	fadt->smi_cmd = 0;
@@ -74,9 +70,9 @@ 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_l = (u32)facs;
 	fadt->x_firmware_ctl_h = 0;
-	fadt->x_dsdt_l = (u32)ctx->dsdt;
+	fadt->x_dsdt_l = (u32)dsdt;
 	fadt->x_dsdt_h = 0;
 
 	fadt->x_pm1a_evt_blk.space_id = ACPI_ADDRESS_SPACE_IO;
@@ -136,14 +132,7 @@ static int quark_write_fadt(struct acpi_ctx *ctx,
 	fadt->x_gpe1_blk.addrh = 0x0;
 
 	header->checksum = table_compute_checksum(fadt, header->length);
-
-	acpi_add_table(ctx, fadt);
-
-	acpi_inc(ctx, sizeof(struct acpi_fadt));
-
-	return 0;
 }
-ACPI_WRITER(5fadt, "FACP", quark_write_fadt, 0);
 
 int acpi_create_gnvs(struct acpi_global_nvs *gnvs)
 {
diff --git a/arch/x86/cpu/tangier/acpi.c b/arch/x86/cpu/tangier/acpi.c
index e3a2fcea76d0..3ffba3897aad 100644
--- a/arch/x86/cpu/tangier/acpi.c
+++ b/arch/x86/cpu/tangier/acpi.c
@@ -16,23 +16,19 @@
 #include <asm/arch/iomap.h>
 #include <dm/uclass-internal.h>
 
-static int tangier_write_fadt(struct acpi_ctx *ctx,
-			      const struct acpi_writer *entry)
+void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs,
+		      void *dsdt)
 {
-	struct acpi_table_header *header;
-	struct acpi_fadt *fadt;
+	struct acpi_table_header *header = &(fadt->header);
 
-	fadt = ctx->current;
-	header = &fadt->header;
-
-	memset(fadt, '\0', sizeof(struct acpi_fadt));
+	memset((void *)fadt, 0, sizeof(struct acpi_fadt));
 
 	acpi_fill_header(header, "FACP");
 	header->length = sizeof(struct acpi_fadt);
 	header->revision = 6;
 
-	fadt->firmware_ctrl = (u32)ctx->facs;
-	fadt->dsdt = (u32)ctx->dsdt;
+	fadt->firmware_ctrl = (u32)facs;
+	fadt->dsdt = (u32)dsdt;
 	fadt->preferred_pm_profile = ACPI_PM_UNSPECIFIED;
 
 	fadt->iapc_boot_arch = ACPI_FADT_VGA_NOT_PRESENT |
@@ -45,18 +41,13 @@ 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_l = (u32)facs;
 	fadt->x_firmware_ctl_h = 0;
-	fadt->x_dsdt_l = (u32)ctx->dsdt;
+	fadt->x_dsdt_l = (u32)dsdt;
 	fadt->x_dsdt_h = 0;
 
 	header->checksum = table_compute_checksum(fadt, header->length);
-
-	acpi_inc(ctx, sizeof(struct acpi_fadt));
-
-	return 0;
 }
-ACPI_WRITER(5fadt, "FACP", tangier_write_fadt, 0);
 
 u32 acpi_fill_madt(u32 current)
 {
diff --git a/arch/x86/include/asm/acpi_table.h b/arch/x86/include/asm/acpi_table.h
index 226753b65d6a..72e1873d15dc 100644
--- a/arch/x86/include/asm/acpi_table.h
+++ b/arch/x86/include/asm/acpi_table.h
@@ -24,6 +24,8 @@ struct acpi_table_header;
 
 /* These can be used by the target port */
 
+void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs,
+		      void *dsdt);
 int acpi_create_madt_lapics(u32 current);
 int acpi_create_madt_ioapic(struct acpi_madt_ioapic *ioapic, u8 id,
 			    u32 addr, u32 gsi_base);
diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c
index c5b33dc65de4..e3b7e9a4bbe8 100644
--- a/arch/x86/lib/acpi_table.c
+++ b/arch/x86/lib/acpi_table.c
@@ -458,6 +458,21 @@ int acpi_write_gnvs(struct acpi_ctx *ctx, const struct acpi_writer *entry)
 }
 ACPI_WRITER(4gnvs, "GNVS", acpi_write_gnvs, 0);
 
+static int acpi_write_fadt(struct acpi_ctx *ctx,
+			   const struct acpi_writer *entry)
+{
+	struct acpi_fadt *fadt;
+
+	fadt = ctx->current;
+	acpi_create_fadt(fadt, ctx->facs, ctx->dsdt);
+	acpi_add_table(ctx, fadt);
+
+	acpi_inc(ctx, sizeof(struct acpi_fadt));
+
+	return 0;
+}
+ACPI_WRITER(5fact, "FADT", acpi_write_fadt, 0);
+
 /**
  * acpi_write_hpet() - Write out a HPET table
  *
-- 
2.35.1



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