coreboot
coreboot is an Open Source project aimed at replacing the proprietary BIOS found in most computers.
early_init.c
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1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 
3 #include <bootblock_common.h>
4 #include <device/pnp_ops.h>
5 #include <device/dram/ddr3.h>
10 
12  { 1, 0, 0 },
13  { 1, 0, 0 },
14  { 1, 0, 1 },
15  { 1, 0, 1 },
16  { 1, 0, 2 },
17  { 1, 0, 2 },
18  { 1, 0, 3 },
19  { 1, 0, 3 },
20  { 1, 0, 4 },
21  { 1, 0, 4 },
22  { 1, 0, 5 },
23  { 1, 0, 5 },
24  { 1, 0, 6 },
25  { 1, 0, 6 },
26 };
27 
29 {
30  static const pnp_devfn_t GLOBAL_PSEUDO_DEV = PNP_DEV(0x2e, 0);
31  static const pnp_devfn_t ACPI_DEV = PNP_DEV(0x2e, NCT6776_ACPI);
32 
33  nuvoton_pnp_enter_conf_state(GLOBAL_PSEUDO_DEV);
34 
35  /* Select HWM/LED functions instead of floppy functions. */
36  pnp_write_config(GLOBAL_PSEUDO_DEV, 0x1c, 0x03);
37  pnp_write_config(GLOBAL_PSEUDO_DEV, 0x24, 0x24);
38 
39  /* Power RAM in S3. */
41  pnp_write_config(ACPI_DEV, 0xe4, 0x10);
42 
43  nuvoton_pnp_exit_conf_state(GLOBAL_PSEUDO_DEV);
44 }
45 
46 void mainboard_get_spd(spd_raw_data *spd, bool id_only)
47 {
48  read_spd(&spd[0], 0x50, id_only);
49  read_spd(&spd[1], 0x51, id_only);
50  read_spd(&spd[2], 0x52, id_only);
51  read_spd(&spd[3], 0x53, id_only);
52 }
Utilities for decoding DDR3 SPDs.
u8 spd_raw_data[256]
Definition: ddr3.h:156
void bootblock_mainboard_early_init(void)
Definition: early_init.c:11
void mainboard_get_spd(spd_raw_data *spd, bool id_only)
Definition: early_init.c:25
const struct southbridge_usb_port mainboard_usb_ports[]
Definition: early_init.c:8
#define ACPI_DEV
Definition: early_init.c:12
#define NCT6776_ACPI
Definition: nct6776.h:18
void read_spd(spd_raw_data *spd, u8 addr, bool id_only)
Definition: raminit.c:138
void nuvoton_pnp_enter_conf_state(pnp_devfn_t dev)
Definition: early_serial.c:33
void nuvoton_pnp_exit_conf_state(pnp_devfn_t dev)
Definition: early_serial.c:41
void pnp_set_logical_device(struct device *dev)
Definition: pnp_device.c:59
void pnp_write_config(struct device *dev, u8 reg, u8 value)
Definition: pnp_device.c:38
#define PNP_DEV(PORT, FUNC)
Definition: pnp_type.h:10
u32 pnp_devfn_t
Definition: pnp_type.h:8