Nico Huber (nico.huber@secunet.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/3287
-gerrit
commit f70d835a9561a4812b32fa2299a282b7f8a1ac7d Author: Nico Huber nico.huber@secunet.com Date: Thu May 23 18:14:36 2013 +0200
WIP: kontron/it8516e: ACPI code drop
An example how the ACPI framework can be used.
Change-Id: Ifd6765821d9873112ebaae1af28a9dec97c3146e Signed-off-by: Nico Huber nico.huber@secunet.com --- src/ec/kontron/it8516e/acpi/ec.asl | 115 ++++++++++++++++++++++++++++ src/ec/kontron/it8516e/acpi/pm_channels.asl | 115 ++++++++++++++++++++++++++++ 2 files changed, 230 insertions(+)
diff --git a/src/ec/kontron/it8516e/acpi/ec.asl b/src/ec/kontron/it8516e/acpi/ec.asl new file mode 100644 index 0000000..bdae967 --- /dev/null +++ b/src/ec/kontron/it8516e/acpi/ec.asl @@ -0,0 +1,115 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 secunet Security Networks AG + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* + * Include this file into a mainboard's DSDT _SB device tree and it will + * expose the IT8516E in the configuration used by Kontron: + * 2xUART, + * PS/2 Mouse, Keyboard + * Two PM Channels + * + * It allows the change of IO ports, IRQs and DMA settings on the devices + * and disabling and reenabling logical devices. + * + * Controlled by the following preprocessor defines: + * IT8516E_EC_DEV Device identifier for this EC (e.g. EC0) + * SUPERIO_PNP_BASE I/o address of the first PnP configuration register + * IT8516E_FIRST_DATA I/o address of the EC_DATA register on the first + * pm channel + * IT8516E_FIRST_SC I/o address of the EC_SC register on the first + * pm channel + * IT8516E_SECOND_DATA I/o address of the EC_DATA register on the second + * pm channel + * IT8516E_SECOND_SC I/o address of the EC_SC register on the second + * pm channel + */ + +#undef SUPERIO_CHIP_NAME +#define SUPERIO_CHIP_NAME IT8516E +#include <superio/acpi/pnp.asl> + +Device(IT8516E_EC_DEV) { + Name (_HID, EisaId("PNP0A05")) + Name (_STR, Unicode("Kontron IT8516E Embedded Controller")) + Name (_UID, SUPERIO_UID(IT8516E_EC_DEV,)) + + /* SuperIO configuration ports */ + OperationRegion (CREG, SystemIO, SUPERIO_PNP_BASE, 0x02) + Field (CREG, ByteAcc, NoLock, Preserve) + { + ADDR, 8, + DATA, 8 + } + IndexField (ADDR, DATA, ByteAcc, NoLock, Preserve) + { + Offset (0x07), + PNP_LOGICAL_DEVICE, 8, /* Logical device selector */ + + Offset (0x30), + PNP_DEVICE_ACTIVE, 1, /* Logical device activation */ + + Offset (0x60), + PNP_IO0_HIGH_BYTE, 8, /* First I/O port base - high byte */ + PNP_IO0_LOW_BYTE, 8, /* First I/O port base - low byte */ + PNP_IO1_HIGH_BYTE, 8, /* Second I/O port base - high byte */ + PNP_IO1_LOW_BYTE, 8, /* Second I/O port base - low byte */ + + Offset (0x70), + PNP_IRQ0, 8, /* First IRQ */ + } + + Method (_CRS) + { + /* Announce the used i/o ports to the OS */ + Return (ResourceTemplate () { + IO (Decode16, SUPERIO_PNP_BASE, SUPERIO_PNP_BASE, 0x01, 0x02) + }) + } + + #undef PNP_ENTER_MAGIC_1ST + #undef PNP_ENTER_MAGIC_2ND + #undef PNP_ENTER_MAGIC_3RD + #undef PNP_EXIT_MAGIC_1ST + #include <superio/acpi/pnp_config.asl> + + Method (_PSC) + { + /* No PM: always in C0 */ + Return (0) + } + + #undef SUPERIO_UART_LDN + #undef SUPERIO_UART_DDN + #undef SUPERIO_UART_PM_REG + #define SUPERIO_UART_LDN 1 + #include <superio/acpi/pnp_uart.asl> + + #undef SUPERIO_UART_LDN + #define SUPERIO_UART_LDN 2 + #include <superio/acpi/pnp_uart.asl> + + #undef SUPERIO_KBC_LDN + #undef SUPERIO_KBC_PS2M + #undef SUPERIO_KBC_PS2LDN + #define SUPERIO_KBC_LDN 6 + #define SUPERIO_KBC_PS2LDN 5 + #include <superio/acpi/pnp_kbc.asl> + + #include "pm_channels.asl" +} diff --git a/src/ec/kontron/it8516e/acpi/pm_channels.asl b/src/ec/kontron/it8516e/acpi/pm_channels.asl new file mode 100644 index 0000000..f18ac36 --- /dev/null +++ b/src/ec/kontron/it8516e/acpi/pm_channels.asl @@ -0,0 +1,115 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 secunet Security Networks AG + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifdef IT8516E_FIRST_DATA +Device (PM1) { + Name (_HID, EisaId("PNP0C02")) + Name (_STR, Unicode("IT8516E PM Channel 1")) + Name (_UID, SUPERIO_UID(PM, 1)) + + /* + * The EC firmware exposes CPU temperature through ec ram + * on the first PM channel. + */ + + #undef EC_DATA_IO + #define EC_DATA_IO IT8516E_FIRST_DATA + #undef EC_SC_IO + #define EC_SC_IO IT8516E_FIRST_SC + #include <ec/acpi/ec.asl> + + Method (_CRS) + { + /* Announce the used i/o ports to the OS */ + Return (ResourceTemplate () { + IO (Decode16, IT8516E_FIRST_DATA, IT8516E_FIRST_DATA, 0x01, 0x01) + IO (Decode16, IT8516E_FIRST_SC, IT8516E_FIRST_SC, 0x01, 0x01) + }) + } + + /* + * Get CPU temperature from first PM channel (in 10th Kelvin) + */ + Method (CTK) + { + Store (EC_READ (0x52), Local0) + If (And (Local0, EC_ERROR_MASK)) { + Return (0) + } + Multiply (Local0, 10, Local0) /* Convert to 10th °C */ + Return (Add (Local0, 2732)) /* Return as 10th Kelvin */ + } +} +#endif + +#ifdef IT8516E_SECOND_DATA +Device (PM2) { + Name (_HID, EisaId("PNP0C02")) + Name (_STR, Unicode("IT8516E PM Channel 2")) + Name (_UID, SUPERIO_UID(PM, 2)) + + /* + * The EC firmware exposes fan and GPIO control through the + * second PM channel. + */ + + #undef EC_DATA_IO + #define EC_DATA_IO IT8516E_SECOND_DATA + #undef EC_SC_IO + #define EC_SC_IO IT8516E_SECOND_SC + #include <ec/acpi/ec.asl> + + Method (_CRS) + { + /* Announce the used i/o ports to the OS */ + Return (ResourceTemplate () { + IO (Decode16, IT8516E_SECOND_DATA, IT8516E_SECOND_DATA, 0x01, 0x01) + IO (Decode16, IT8516E_SECOND_SC, IT8516E_SECOND_SC, 0x01, 0x01) + }) + } + + /* + * Get CPU temperature from second PM channel (in 10th Kelvin) + */ + Method (CTK) + { + Acquire (EC_MUTEX, 0xffff) + Store (SEND_EC_COMMAND (0x20), Local0) /* GET_CPUTEMP */ + If (And (Local0, EC_ERROR_MASK)) { + Release (EC_MUTEX) + Return (0) + } + Store (RECV_EC_DATA (), Local0) /* Temp low byte in 64th °C */ + If (And (Local0, EC_ERROR_MASK)) { + Release (EC_MUTEX) + Return (0) + } + Store (RECV_EC_DATA (), Local1) /* Temp high byte in 64th °C */ + If (And (Local1, EC_ERROR_MASK)) { + Release (EC_MUTEX) + Return (0) + } + Release (EC_MUTEX) + + Or (ShiftLeft (Local1, 8), Local0, Local0) + Store (Divide (Multiply (Local0, 10), 64), Local0) /* Convert to 10th °C */ + Return (Add (Local0, 2732)) /* Return as 10th Kelvin */ + } +} +#endif
-
Nico Huber