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Diffstat (limited to 'src/superio/acpi/pnp_uart.asl')
-rw-r--r-- | src/superio/acpi/pnp_uart.asl | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/src/superio/acpi/pnp_uart.asl b/src/superio/acpi/pnp_uart.asl new file mode 100644 index 0000000..c826106 --- /dev/null +++ b/src/superio/acpi/pnp_uart.asl @@ -0,0 +1,134 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 Christoph Grenz <christophg+cb@grenz-bonn.de> + * 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 + */ + +/* ========================== UART ========================== */ + +/* + * Generic setup for 16550A compatible UARTs. + * + * Controlled by the following preprocessor defines: + * + * SUPERIO_CHIP_NAME The name of the super i/o chip (unique, required) + * SUPERIO_UART_LDN The logical device number on the super i/o + * chip for this UART (required) + * SUPERIO_UART_DDN A string literal that identifies the dos device + * name (DDN) of this uart (e.g. "COM1", optional) + * SUPERIO_UART_PM_REG Identifier of a 1-bit register to power down + * the UART (optional) + * SUPERIO_UART_PM_LDN The logical device number to access the PM_REG + * bit (required if SUPERIO_UART_PM_REG is defined) + */ + +#include "pnp.asl" + +#ifndef SUPERIO_CHIP_NAME +# error "SUPERIO_CHIP_NAME is not defined." +#endif + +#ifndef SUPERIO_UART_LDN +# error "SUPERIO_UART_LDN is not defined." +#endif + +Device (SUPERIO_ID(SER, SUPERIO_UART_LDN)) { + Name (_HID, EisaId ("PNP0501")) + Name (_UID, SUPERIO_UID(SER, SUPERIO_UART_LDN)) + #ifdef SUPERIO_UART_DDN + Name (_DDN, SUPERIO_UART_DDN) + #endif + + Method (_STA) + { + PNP_GENERIC_STA(SUPERIO_UART_LDN) + } + + Method (_DIS) + { + PNP_GENERIC_DIS(SUPERIO_UART_LDN) + } + +#ifdef SUPERIO_UART_PM_REG + Method (_PSC) { + PNP_GENERIC_PSC(SUPERIO_UART_PM_REG, SUPERIO_UART_PM_LDN) + } + + Method (_PS0) { + PNP_GENERIC_PS0(SUPERIO_UART_PM_REG, SUPERIO_UART_PM_LDN) + } + + Method (_PS1) { + PNP_GENERIC_PS1(SUPERIO_UART_PM_REG, SUPERIO_UART_PM_LDN) + } +#else + Method (_PSC) { + PNP_DEFAULT_PSC + } +#endif + + Method (_CRS) + { + Name (CRS, ResourceTemplate () { + IO (Decode16, 0x0000, 0x0000, 0x08, 0x08, IO0) + IRQNoFlags (IR0) {} + }) + ENTER_CONFIG_MODE (SUPERIO_UART_LDN) + PNP_READ_IO(PNP_IO0, CRS, IO0) + PNP_READ_IRQ(PNP_IRQ0, CRS, IR0) + EXIT_CONFIG_MODE () + Return (CRS) + } + + Name (_PRS, ResourceTemplate () + { + StartDependentFn (0,0) { + IO (Decode16, 0x03f8, 0x03f8, 0x08, 0x08) + IRQNoFlags () {3,4,5,7,9,10,11,12} + } + StartDependentFn (0,0) { + IO (Decode16, 0x02f8, 0x02f8, 0x08, 0x08) + IRQNoFlags () {3,4,5,7,9,10,11,12} + } + StartDependentFn (1,0) { + IO (Decode16, 0x03e8, 0x03e8, 0x08, 0x08) + IRQNoFlags () {3,4,5,7,9,10,11,12} + } + StartDependentFn (1,0) { + IO (Decode16, 0x02e8, 0x02e8, 0x08, 0x08) + IRQNoFlags () {3,4,5,7,9,10,11,12} + } + StartDependentFn (2,0) { + IO (Decode16, 0x0100, 0x0ff8, 0x08, 0x08) + IRQNoFlags () {3,4,5,7,9,10,11,12} + } + EndDependentFn() + }) + + Method (_SRS, 1, Serialized) + { + Name (TMPL, ResourceTemplate () { + IO (Decode16, 0x0000, 0x0000, 0x00, 0x00, IO0) + IRQNoFlags (IR0) {} + }) + ENTER_CONFIG_MODE (SUPERIO_UART_LDN) + PNP_WRITE_IO(PNP_IO0, Arg0, IO0) + PNP_WRITE_IRQ(PNP_IRQ0, Arg0, IR0) + Store (One, PNP_DEVICE_ACTIVE) + EXIT_CONFIG_MODE () + } +} |