coreboot
coreboot is an Open Source project aimed at replacing the proprietary BIOS found in most computers.
bootblock.c
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/* SPDX-License-Identifier: GPL-2.0-only */
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#include <
device/pnp_ops.h
>
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#include <
superio/nuvoton/common/nuvoton.h
>
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#include <
superio/nuvoton/nct6776/nct6776.h
>
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#include <
southbridge/intel/lynxpoint/pch.h
>
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#define GLOBAL_DEV PNP_DEV(0x2e, 0)
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#define SERIAL_DEV PNP_DEV(0x2e, NCT6776_SP1)
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#define ACPI_DEV PNP_DEV(0x2e, NCT6776_ACPI)
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/*
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* Asrock B85M Pro4 Super I/O GPIOs
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*
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* +------+-----+---------------------------+
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* | GPIO | Pin | Description |
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* +------+-----+---------------------------+
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* | GP00 | 2 | N/C |
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* | GP01 | 4 | CPU Fan 4-pin tach enable |
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* | GP02 | 5 | CPU Fan 3-pin tach enable |
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* | GP03 | 8 | CPU Fan 3-pin FON# signal |
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* | GP04 | 9 | N/C |
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* | GP05 | 11 | N/C (+1.05V_PCH_GPIO) |
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* | GP06 | 12 | N/C (+1.5V_PCH_GPIO) |
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* | GP07 | 13 | N/C |
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* +------+-----+---------------------------+
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* | GP10 | 123 | N/C (VCCM_OV1) |
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* | GP11 | 122 | N/C (VCCM_OV2) |
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* | GP12 | 121 | N/C (VCCM_OV3) |
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* | GP13 | 120 | N/C (VCCM_STEP) |
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* | GP14 | 119 | Assert HDA_SDO (SIO_GP14) |
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* | GP15 | 118 | N/C (PWM_THROTTLE) |
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* | GP16 | 117 | OTP for VCORE (OTE_GATE1) |
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* | GP17 | 116 | N/C (IMON_GPIO) |
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* +------+-----+---------------------------+
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* | GP70 | 93 | PWR_FANIN |
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* | GP71 | 92 | N/C |
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* | GP72 | 91 | N/C (SIO_PIN91) |
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* | GP73 | 90 | CHA2_FANIN |
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* | GP74 | 89 | N/C (SIO_PIN89) |
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* | GP75 | 88 | N/C (SIO_PIN88) |
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* | GP76 | 87 | HDA reset gate (GP76) |
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* | GP77 | 86 | HDD_LED gate |
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* +------+-----+---------------------------+
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*/
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void
mainboard_config_superio
(
void
)
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{
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nuvoton_pnp_enter_conf_state
(
GLOBAL_DEV
);
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/* Select SIO pin mux states */
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pnp_write_config
(
GLOBAL_DEV
, 0x1b, 0x68);
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pnp_write_config
(
GLOBAL_DEV
, 0x1c, 0x80);
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pnp_write_config
(
GLOBAL_DEV
, 0x24, 0x1c);
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pnp_write_config
(
GLOBAL_DEV
, 0x27, 0xd0);
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pnp_write_config
(
GLOBAL_DEV
, 0x2a, 0x62);
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pnp_write_config
(
GLOBAL_DEV
, 0x2c, 0x80);
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pnp_write_config
(
GLOBAL_DEV
, 0x2f, 0x03);
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/* Power RAM in S3 and let the PCH handle power failure actions */
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pnp_set_logical_device
(
ACPI_DEV
);
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pnp_write_config
(
ACPI_DEV
, 0xe4, 0x70);
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nuvoton_pnp_exit_conf_state
(
GLOBAL_DEV
);
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/* Enable UART */
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nuvoton_enable_serial
(
SERIAL_DEV
, CONFIG_TTYS0_BASE);
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}
mainboard_config_superio
void mainboard_config_superio(void)
Definition:
bootblock.c:47
ACPI_DEV
#define ACPI_DEV
Definition:
bootblock.c:10
SERIAL_DEV
#define SERIAL_DEV
Definition:
bootblock.c:9
GLOBAL_DEV
#define GLOBAL_DEV
Definition:
bootblock.c:8
nct6776.h
nuvoton_pnp_enter_conf_state
void nuvoton_pnp_enter_conf_state(pnp_devfn_t dev)
Definition:
early_serial.c:33
nuvoton_enable_serial
void nuvoton_enable_serial(pnp_devfn_t dev, u16 iobase)
Definition:
early_serial.c:48
nuvoton_pnp_exit_conf_state
void nuvoton_pnp_exit_conf_state(pnp_devfn_t dev)
Definition:
early_serial.c:41
nuvoton.h
pnp_set_logical_device
void pnp_set_logical_device(struct device *dev)
Definition:
pnp_device.c:59
pnp_write_config
void pnp_write_config(struct device *dev, u8 reg, u8 value)
Definition:
pnp_device.c:38
pnp_ops.h
pch.h
src
mainboard
asrock
b85m_pro4
bootblock.c
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