soc/intel/common/block/acpi: Move pep.asl to acpigen
There is a use-case for generating the AML bytecode at runtime for the
Intel Power Engine device, which comes in a followup patch.
BUG=b:185437326
TEST=verified on google/brya and google/dratini by dumping SSDT and
verifying the PEPD device matches what was previously in the DSDT:
Scope (\_SB.PCI0)
{
Device (PEPD)
{
Name (_HID, "INT33A1")
Name (_CID, EisaId ("PNP0D80")
Method (_DSM, 4, Serialized)
{
ToBuffer (Arg0, Local0)
If ((Local0 == ToUUID ("c4eb40a0-6cd2-11e2-bcfd-0800200c9a66")))
{
ToInteger (Arg2, Local1)
If ((Local1 == Zero))
{
Return (Buffer (One)
{
0x63
})
}
If ((Local1 == One))
{
Return (Package (0x01)
{
Package (0x03)
{
\NULL,
Zero,
Package (0x02)
{
Zero,
Package (0x02)
{
0xFF,
Zero
}
}
}
})
}
If ((Local1 == 0x02)){}
If ((Local1 == 0x03)){}
If ((Local1 == 0x04)){}
If ((Local1 == 0x05))
{
If (CondRefOf (\_SB.PCI0.LPCB.EC0.S0IX))
{
\_SB.PCI0.LPCB.EC0.S0IX (One)
}
If (CondRefOf (\_SB.MS0X))
{
\_SB.MS0X (One)
}
If (CondRefOf (\_SB.PCI0.EGPM))
{
\_SB.PCI0.EGPM ()
}
}
If ((Local1 == 0x06))
{
If (CondRefOf (\_SB.PCI0.LPCB.EC0.S0IX))
{
\_SB.PCI0.LPCB.EC0.S0IX (Zero)
}
If (CondRefOf (\_SB.MS0X))
{
\_SB.MS0X (Zero)
}
If (CondRefOf (\_SB.PCI0.RGPM))
{
\_SB.PCI0.RGPM ()
}
}
Return (Buffer (One)
{
0x00
})
}
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: Ie83722e0ed5792e338fc5c39a57eef43b7464e3b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56004
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Tim Wawrzynczak
parent
d96f3a25b4
commit
64246480a6
|
|
@ -15,6 +15,13 @@ config SOC_INTEL_COMMON_BLOCK_ACPI_LPIT
|
|||
help
|
||||
Generate LPIT table with LPI state entries
|
||||
|
||||
config SOC_INTEL_COMMON_BLOCK_ACPI_PEP
|
||||
bool
|
||||
depends on HAVE_ACPI_TABLES
|
||||
help
|
||||
Generate an Intel Power Engine device object in the SSDT. This is
|
||||
usually used for providing ACPI hooks for S0ix exit/entry.
|
||||
|
||||
config SOC_INTEL_COMMON_BLOCK_CRASHLOG
|
||||
bool
|
||||
depends on SOC_INTEL_CRASHLOG
|
||||
|
|
@ -28,5 +35,4 @@ config SOC_INTEL_COMMON_BLOCK_ACPI_CPPC
|
|||
help
|
||||
Generate CPPC entries for Intel SpeedShift
|
||||
|
||||
|
||||
endif
|
||||
|
|
|
|||
|
|
@ -3,3 +3,4 @@ ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_GPIO) += gpio.c
|
|||
ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_LPIT) += lpit.c
|
||||
ramstage-$(CONFIG_ACPI_BERT) += acpi_bert.c
|
||||
ramstage-$(CONFIG_SOC_INTEL_COMMON_ACPI_WAKE_SOURCE) += acpi_wake_source.c
|
||||
ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_ACPI_PEP) += pep.c
|
||||
|
|
|
|||
|
|
@ -0,0 +1,122 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||||
|
||||
#include <acpi/acpigen.h>
|
||||
#include <console/console.h>
|
||||
#include <intelblocks/acpi.h>
|
||||
#include <types.h>
|
||||
|
||||
#define LPI_S0_HELPER_UUID "c4eb40a0-6cd2-11e2-bcfd-0800200c9a66"
|
||||
#define SYSTEM_POWER_MANAGEMENT_HID "INT33A1"
|
||||
#define SYSTEM_POWER_MANAGEMENT_CID "PNP0D80"
|
||||
#define EC_S0IX_HOOK "\\_SB.PCI0.LPCB.EC0.S0IX"
|
||||
#define MAINBOARD_HOOK "\\_SB.MS0X"
|
||||
#define ENABLE_PM_BITS_HOOK "\\_SB.PCI0.EGPM"
|
||||
#define RESTORE_PM_BITS_HOOK "\\_SB.PCI0.RGPM"
|
||||
#define LPI_STATES_ALL 0xff
|
||||
#define MIN_DEVICE_STATE ACPI_DEVICE_SLEEP_D0
|
||||
#define PEPD_SCOPE "\\_SB.PCI0"
|
||||
|
||||
/*
|
||||
* For now there is only one disabled non-existent device, because Windows
|
||||
* expects at least one device and crashes without it with a bluescreen
|
||||
* (`INTERNAL_POWER_ERROR`). Returning an empty package does not work.
|
||||
*/
|
||||
static void lpi_get_constraints(void *unused)
|
||||
{
|
||||
/*
|
||||
* Return (Package() {
|
||||
* Package() { "\NULL", 0,
|
||||
* Package() { 0,
|
||||
* Package() { 0xff, 0 }}}})
|
||||
*/
|
||||
acpigen_emit_byte(RETURN_OP);
|
||||
acpigen_write_package(1);
|
||||
{
|
||||
acpigen_write_package(3);
|
||||
{
|
||||
acpigen_emit_namestring("\\NULL");
|
||||
acpigen_write_integer(0); /* device disabled */
|
||||
acpigen_write_package(2);
|
||||
{
|
||||
acpigen_write_integer(0); /* revision */
|
||||
acpigen_write_package(2);
|
||||
{
|
||||
acpigen_write_integer(LPI_STATES_ALL);
|
||||
acpigen_write_integer(MIN_DEVICE_STATE);
|
||||
}
|
||||
acpigen_write_package_end();
|
||||
}
|
||||
acpigen_write_package_end();
|
||||
}
|
||||
acpigen_write_package_end();
|
||||
}
|
||||
acpigen_write_package_end();
|
||||
}
|
||||
|
||||
static void lpi_s0ix_entry(void *unused)
|
||||
{
|
||||
/* Inform the EC */
|
||||
acpigen_write_if_cond_ref_of(EC_S0IX_HOOK);
|
||||
acpigen_emit_namestring(EC_S0IX_HOOK);
|
||||
acpigen_write_integer(1);
|
||||
acpigen_write_if_end();
|
||||
|
||||
/* Provide a board level S0ix hook */
|
||||
acpigen_write_if_cond_ref_of(MAINBOARD_HOOK);
|
||||
acpigen_emit_namestring(MAINBOARD_HOOK);
|
||||
acpigen_write_integer(1);
|
||||
acpigen_write_if_end();
|
||||
|
||||
/* Save the current PM bits then enable GPIO PM with
|
||||
MISCCFG_GPIO_PM_CONFIG_BITS */
|
||||
acpigen_write_if_cond_ref_of(ENABLE_PM_BITS_HOOK);
|
||||
acpigen_emit_namestring(ENABLE_PM_BITS_HOOK);
|
||||
acpigen_write_if_end();
|
||||
}
|
||||
|
||||
static void lpi_s0ix_exit(void *unused)
|
||||
{
|
||||
/* Inform the EC */
|
||||
acpigen_write_if_cond_ref_of(EC_S0IX_HOOK);
|
||||
acpigen_emit_namestring(EC_S0IX_HOOK);
|
||||
acpigen_write_integer(0);
|
||||
acpigen_write_if_end();
|
||||
|
||||
/* Provide a board level S0ix hook */
|
||||
acpigen_write_if_cond_ref_of(MAINBOARD_HOOK);
|
||||
acpigen_emit_namestring(MAINBOARD_HOOK);
|
||||
acpigen_write_integer(0);
|
||||
acpigen_write_if_end();
|
||||
|
||||
/* Restore GPIO all Community PM */
|
||||
acpigen_write_if_cond_ref_of(RESTORE_PM_BITS_HOOK);
|
||||
acpigen_emit_namestring(RESTORE_PM_BITS_HOOK);
|
||||
acpigen_write_if_end();
|
||||
}
|
||||
|
||||
static void (*lpi_s0_helpers[])(void *) = {
|
||||
NULL, /* enumerate functions (autogenerated) */
|
||||
lpi_get_constraints, /* get device constraints */
|
||||
NULL, /* get crash dump device */
|
||||
NULL, /* display off notify */
|
||||
NULL, /* display on notify */
|
||||
lpi_s0ix_entry, /* s0ix entry */
|
||||
lpi_s0ix_exit, /* s0ix exit */
|
||||
};
|
||||
|
||||
void generate_acpi_power_engine(void)
|
||||
{
|
||||
acpigen_write_scope(PEPD_SCOPE);
|
||||
acpigen_write_device("PEPD");
|
||||
|
||||
acpigen_write_name_string("_HID", SYSTEM_POWER_MANAGEMENT_HID);
|
||||
acpigen_write_name("_CID");
|
||||
acpigen_emit_eisaid(SYSTEM_POWER_MANAGEMENT_CID);
|
||||
|
||||
acpigen_write_dsm(LPI_S0_HELPER_UUID, lpi_s0_helpers, ARRAY_SIZE(lpi_s0_helpers), NULL);
|
||||
|
||||
acpigen_write_device_end();
|
||||
acpigen_write_scope_end();
|
||||
|
||||
printk(BIOS_INFO, PEPD_SCOPE ".PEPD: Intel Power Engine Plug-in\n");
|
||||
}
|
||||
|
|
@ -90,4 +90,7 @@ struct madt_ioapic_info {
|
|||
*/
|
||||
const struct madt_ioapic_info *soc_get_ioapic_info(size_t *entries);
|
||||
|
||||
/* Generate an Intel Power Engine ACPI device */
|
||||
void generate_acpi_power_engine(void);
|
||||
|
||||
#endif /* _SOC_INTEL_COMMON_BLOCK_ACPI_H_ */
|
||||
|
|
|
|||
Loading…
Reference in New Issue