diff mbox series

[02/17] acpi: x86: Write FADT in common code

Message ID 20240727071742.1735703-3-patrick.rudolph@9elements.com
State Changes Requested
Delegated to: Simon Glass
Headers show
Series Implement ACPI on aarch64 | expand

Commit Message

Patrick Rudolph July 27, 2024, 7:17 a.m. UTC 
From: Maximilian Brune <maximilian.brune@9elements.com>

Write the FADT in common code since it's used on all architectures.
Let the cpu code fill out the FADT body by introducing a new weak
function acpi_fill_fadt().

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
---
 arch/x86/cpu/apollolake/acpi.c    | 20 +++------------
 arch/x86/cpu/baytrail/acpi.c      | 17 +------------
 arch/x86/cpu/quark/acpi.c         | 19 +-------------
 arch/x86/cpu/tangier/acpi.c       | 25 ++----------------
 arch/x86/include/asm/acpi_table.h | 12 ---------
 arch/x86/lib/acpi_table.c         | 23 -----------------
 include/acpi/acpi_table.h         |  9 +++++++
 lib/acpi/acpi_table.c             | 42 +++++++++++++++++++++++++++++++
 8 files changed, 59 insertions(+), 108 deletions(-)

Comments

Simon Glass July 29, 2024, 3:28 p.m. UTC | #1 
Hi Patrick,

On Sat, 27 Jul 2024 at 01:20, Patrick Rudolph
<patrick.rudolph@9elements.com> wrote:
>
> From: Maximilian Brune <maximilian.brune@9elements.com>
>
> Write the FADT in common code since it's used on all architectures.
> Let the cpu code fill out the FADT body by introducing a new weak
> function acpi_fill_fadt().

This should be done using the acpi_ops struct...i.e. add a new
operation which fills allows a CPU driver to fill out the CPU info.

>
> Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
> Cc: Simon Glass <sjg@chromium.org>
> Cc: Bin Meng <bmeng.cn@gmail.com>
> ---
>  arch/x86/cpu/apollolake/acpi.c    | 20 +++------------
>  arch/x86/cpu/baytrail/acpi.c      | 17 +------------
>  arch/x86/cpu/quark/acpi.c         | 19 +-------------
>  arch/x86/cpu/tangier/acpi.c       | 25 ++----------------
>  arch/x86/include/asm/acpi_table.h | 12 ---------
>  arch/x86/lib/acpi_table.c         | 23 -----------------
>  include/acpi/acpi_table.h         |  9 +++++++
>  lib/acpi/acpi_table.c             | 42 +++++++++++++++++++++++++++++++
>  8 files changed, 59 insertions(+), 108 deletions(-)

Regards,
Simon
Patrick Rudolph Sept. 2, 2024, 9:09 a.m. UTC | #2 
On Mon, Jul 29, 2024 at 5:28 PM Simon Glass <sjg@chromium.org> wrote:
>
> Hi Patrick,
>
> On Sat, 27 Jul 2024 at 01:20, Patrick Rudolph
> <patrick.rudolph@9elements.com> wrote:
> >
> > From: Maximilian Brune <maximilian.brune@9elements.com>
> >
> > Write the FADT in common code since it's used on all architectures.
> > Let the cpu code fill out the FADT body by introducing a new weak
> > function acpi_fill_fadt().
>
> This should be done using the acpi_ops struct...i.e. add a new
> operation which fills allows a CPU driver to fill out the CPU info.
>
Which of the fields in FADT are related to the CPU driver?
Some fields like "preferred_pm_profile", "iapc_boot_arch" and "flags"
seem to be board specific.
How would the board specific code integrate into the acpi_ops?
As far as I understand there are no drivers for "mainboard class" devices.

> >
> > Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
> > Cc: Simon Glass <sjg@chromium.org>
> > Cc: Bin Meng <bmeng.cn@gmail.com>
> > ---
> >  arch/x86/cpu/apollolake/acpi.c    | 20 +++------------
> >  arch/x86/cpu/baytrail/acpi.c      | 17 +------------
> >  arch/x86/cpu/quark/acpi.c         | 19 +-------------
> >  arch/x86/cpu/tangier/acpi.c       | 25 ++----------------
> >  arch/x86/include/asm/acpi_table.h | 12 ---------
> >  arch/x86/lib/acpi_table.c         | 23 -----------------
> >  include/acpi/acpi_table.h         |  9 +++++++
> >  lib/acpi/acpi_table.c             | 42 +++++++++++++++++++++++++++++++
> >  8 files changed, 59 insertions(+), 108 deletions(-)
>
> Regards,
> Simon
diff mbox series

Patch

diff --git a/arch/x86/cpu/apollolake/acpi.c b/arch/x86/cpu/apollolake/acpi.c
index 76230aea83..93040e7bb3 100644
--- a/arch/x86/cpu/apollolake/acpi.c
+++ b/arch/x86/cpu/apollolake/acpi.c
@@ -128,8 +128,10 @@  int arch_madt_sci_irq_polarity(int sci)
 	return MP_IRQ_POLARITY_LOW;
 }
 
-void fill_fadt(struct acpi_fadt *fadt)
+void acpi_fill_fadt(struct acpi_fadt *fadt)
 {
+	intel_acpi_fill_fadt(fadt);
+
 	fadt->pm_tmr_blk = IOMAP_ACPI_BASE + PM1_TMR;
 
 	fadt->p_lvl2_lat = ACPI_FADT_C2_NOT_SUPPORTED;
@@ -143,23 +145,9 @@  void fill_fadt(struct acpi_fadt *fadt)
 	fadt->x_pm_tmr_blk.space_id = 1;
 	fadt->x_pm_tmr_blk.bit_width = fadt->pm_tmr_len * 8;
 	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)
-{
-	struct acpi_table_header *header;
-	struct acpi_fadt *fadt;
-
-	fadt = ctx->current;
-	acpi_fadt_common(fadt, ctx->facs, ctx->dsdt);
-	intel_acpi_fill_fadt(fadt);
-	fill_fadt(fadt);
-	header = &fadt->header;
-	header->checksum = table_compute_checksum(fadt, header->length);
 
-	return acpi_add_fadt(ctx, fadt);
+	fadt->preferred_pm_profile = ACPI_PM_MOBILE;
 }
-ACPI_WRITER(5fadt, "FADT", 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 7821964f1f..7e1c2de3d3 100644
--- a/arch/x86/cpu/baytrail/acpi.c
+++ b/arch/x86/cpu/baytrail/acpi.c
@@ -15,20 +15,13 @@ 
 #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_fill_fadt(struct acpi_fadt *fadt)
 {
 	struct acpi_table_header *header;
-	struct acpi_fadt *fadt;
 
-	fadt = ctx->current;
 	header = &fadt->header;
 	u16 pmbase = ACPI_BASE_ADDRESS;
 
-	memset(fadt, '\0', sizeof(struct acpi_fadt));
-
-	acpi_fill_header(header, "FACP");
-	header->length = sizeof(struct acpi_fadt);
 	header->revision = 4;
 
 	fadt->preferred_pm_profile = ACPI_PM_MOBILE;
@@ -77,9 +70,6 @@  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_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;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
@@ -135,12 +125,7 @@  static int baytrail_write_fadt(struct acpi_ctx *ctx,
 	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = 0x0;
 	fadt->x_gpe1_blk.addrh = 0x0;
-
-	header->checksum = table_compute_checksum(fadt, header->length);
-
-	return acpi_add_fadt(ctx, fadt);
 }
-ACPI_WRITER(5fadt, "FADT", 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 80e94600fc..0fe5f2bafb 100644
--- a/arch/x86/cpu/quark/acpi.c
+++ b/arch/x86/cpu/quark/acpi.c
@@ -11,23 +11,14 @@ 
 #include <asm/arch/iomap.h>
 #include <linux/string.h>
 
-static int quark_write_fadt(struct acpi_ctx *ctx,
-			    const struct acpi_writer *entry)
+void acpi_fill_fadt(struct acpi_fadt *fadt)
 {
 	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));
-
-	acpi_fill_header(header, "FACP");
-	header->length = sizeof(struct acpi_fadt);
 	header->revision = 4;
 
-	fadt->preferred_pm_profile = ACPI_PM_UNSPECIFIED;
 	fadt->sci_int = 9;
 	fadt->smi_cmd = 0;
 	fadt->acpi_enable = 0;
@@ -73,9 +64,6 @@  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_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;
 	fadt->x_pm1a_evt_blk.bit_offset = 0;
@@ -131,12 +119,7 @@  static int quark_write_fadt(struct acpi_ctx *ctx,
 	fadt->x_gpe1_blk.access_size = 0;
 	fadt->x_gpe1_blk.addrl = 0x0;
 	fadt->x_gpe1_blk.addrh = 0x0;
-
-	header->checksum = table_compute_checksum(fadt, header->length);
-
-	return acpi_add_fadt(ctx, fadt);
 }
-ACPI_WRITER(5fadt, "FADT", 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 d4d0ef6f85..1c73a9dbfe 100644
--- a/arch/x86/cpu/tangier/acpi.c
+++ b/arch/x86/cpu/tangier/acpi.c
@@ -16,21 +16,8 @@ 
 #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_fill_fadt(struct acpi_fadt *fadt)
 {
-	struct acpi_table_header *header;
-	struct acpi_fadt *fadt;
-
-	fadt = ctx->current;
-	header = &fadt->header;
-
-	memset(fadt, '\0', sizeof(struct acpi_fadt));
-
-	acpi_fill_header(header, "FACP");
-	header->length = sizeof(struct acpi_fadt);
-	header->revision = 6;
-
 	fadt->preferred_pm_profile = ACPI_PM_UNSPECIFIED;
 
 	fadt->iapc_boot_arch = ACPI_FADT_VGA_NOT_PRESENT |
@@ -40,17 +27,9 @@  static int tangier_write_fadt(struct acpi_ctx *ctx,
 		ACPI_FADT_POWER_BUTTON | ACPI_FADT_SLEEP_BUTTON |
 		ACPI_FADT_SEALED_CASE | ACPI_FADT_HEADLESS |
 		ACPI_FADT_HW_REDUCED_ACPI;
-
+	fadt->header.revision = 6;
 	fadt->minor_revision = 2;
-
-	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);
-
-	return acpi_add_fadt(ctx, fadt);
 }
-ACPI_WRITER(5fadt, "FADT", 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 e617524617..3988898f66 100644
--- a/arch/x86/include/asm/acpi_table.h
+++ b/arch/x86/include/asm/acpi_table.h
@@ -168,18 +168,6 @@  int acpi_create_dmar_ds_ioapic(struct acpi_ctx *ctx, uint enumeration_id,
 int acpi_create_dmar_ds_msi_hpet(struct acpi_ctx *ctx, uint enumeration_id,
 				 pci_dev_t bdf);
 
-/**
- * acpi_fadt_common() - Handle common parts of filling out an FADT
- *
- * This sets up the Fixed ACPI Description Table
- *
- * @fadt: Pointer to place to put FADT
- * @facs: Pointer to the FACS
- * @dsdt: Pointer to the DSDT
- */
-void acpi_fadt_common(struct acpi_fadt *fadt, struct acpi_facs *facs,
-		      void *dsdt);
-
 /**
  * intel_acpi_fill_fadt() - Set up the contents of the FADT
  *
diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c
index 08fd1e54ce..ff02ce80d1 100644
--- a/arch/x86/lib/acpi_table.c
+++ b/arch/x86/lib/acpi_table.c
@@ -381,29 +381,6 @@  int acpi_write_hpet(struct acpi_ctx *ctx)
 	return 0;
 }
 
-void acpi_fadt_common(struct acpi_fadt *fadt, struct acpi_facs *facs,
-		      void *dsdt)
-{
-	struct acpi_table_header *header = &fadt->header;
-
-	memset((void *)fadt, '\0', sizeof(struct acpi_fadt));
-
-	acpi_fill_header(header, "FACP");
-	header->length = sizeof(struct acpi_fadt);
-	header->revision = 4;
-	memcpy(header->oem_id, OEM_ID, 6);
-	memcpy(header->oem_table_id, OEM_TABLE_ID, 8);
-	memcpy(header->creator_id, ASLC_ID, 4);
-
-	fadt->x_firmware_ctrl = map_to_sysmem(facs);
-	fadt->x_dsdt = map_to_sysmem(dsdt);
-
-	fadt->preferred_pm_profile = ACPI_PM_MOBILE;
-
-	/* Use ACPI 3.0 revision */
-	fadt->header.revision = 4;
-}
-
 void acpi_create_dmar_drhd(struct acpi_ctx *ctx, uint flags, uint segment,
 			   u64 bar)
 {
diff --git a/include/acpi/acpi_table.h b/include/acpi/acpi_table.h
index fa19ea84df..03b69854bf 100644
--- a/include/acpi/acpi_table.h
+++ b/include/acpi/acpi_table.h
@@ -926,6 +926,15 @@  void acpi_fill_header(struct acpi_table_header *header, char *signature);
  */
 int acpi_fill_csrt(struct acpi_ctx *ctx);
 
+/**
+ * acpi_fill_fadt() - Fill out the body of the FADT
+ *
+ * Should be implemented in SoC specific code.
+ *
+ * @fadt: Pointer to FADT to update
+ */
+void acpi_fill_fadt(struct acpi_fadt *fadt);
+
 /**
  * acpi_write_dbg2_pci_uart() - Write out a DBG2 table
  *
diff --git a/lib/acpi/acpi_table.c b/lib/acpi/acpi_table.c
index e7e074d25e..56c1bcd691 100644
--- a/lib/acpi/acpi_table.c
+++ b/lib/acpi/acpi_table.c
@@ -202,6 +202,48 @@  int acpi_add_table(struct acpi_ctx *ctx, void *table)
 	return 0;
 }
 
+__weak void acpi_fill_fadt(struct acpi_fadt *fadt)
+{
+}
+
+int acpi_write_fadt(struct acpi_ctx *ctx, const struct acpi_writer *entry)
+{
+	struct acpi_table_header *header;
+	struct acpi_fadt *fadt;
+
+	fadt = ctx->current;
+	header = &fadt->header;
+
+	memset((void *)fadt, '\0', sizeof(struct acpi_fadt));
+
+	acpi_fill_header(header, "FACP");
+	header->length = sizeof(struct acpi_fadt);
+	header->revision = acpi_get_table_revision(ACPITAB_FADT);
+	memcpy(header->oem_id, OEM_ID, 6);
+	memcpy(header->oem_table_id, OEM_TABLE_ID, 8);
+	memcpy(header->creator_id, ASLC_ID, 4);
+	header->creator_revision = 1;
+
+	fadt->x_firmware_ctrl = map_to_sysmem(ctx->facs);
+	fadt->x_dsdt = map_to_sysmem(ctx->dsdt);
+
+	if (fadt->x_firmware_ctrl < 0x100000000ULL)
+		fadt->firmware_ctrl = fadt->x_firmware_ctrl;
+
+	if (fadt->x_dsdt < 0x100000000ULL)
+		fadt->dsdt = fadt->x_dsdt;
+
+	fadt->preferred_pm_profile = ACPI_PM_UNSPECIFIED;
+
+	acpi_fill_fadt(fadt);
+
+	header->checksum = table_compute_checksum(fadt, header->length);
+
+	return acpi_add_fadt(ctx, fadt);
+}
+
+ACPI_WRITER(5fadt, "FADT", acpi_write_fadt, 0);
+
 static void acpi_create_dbg2(struct acpi_dbg2_header *dbg2,
 			     int port_type, int port_subtype,
 			     struct acpi_gen_regaddr *address, u32 address_size,