coreboot
coreboot is an Open Source project aimed at replacing the proprietary BIOS found in most computers.
mainboard.c
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1 /* SPDX-License-Identifier: GPL-2.0-only */
2 
3 #include <acpi/acpi.h>
4 #include <baseboard/variants.h>
5 #include <boardid.h>
6 #include <console/console.h>
7 #include <device/device.h>
8 #include <ec/ec.h>
9 #include <nhlt.h>
10 #include <soc/gpio.h>
11 #include <soc/nhlt.h>
12 #include <variant/ec.h>
13 #include <variant/gpio.h>
14 
15 static void mainboard_init(void *chip_info)
16 {
17  int boardid;
18  const struct pad_config *pads;
19  size_t num;
20 
21  boardid = board_id();
22  printk(BIOS_INFO, "Board ID: %d\n", boardid);
23 
24  pads = variant_gpio_table(&num);
25  gpio_configure_pads(pads, num);
26 
28 }
29 
30 static unsigned long mainboard_write_acpi_tables(
31  const struct device *device, unsigned long current, acpi_rsdp_t *rsdp)
32 {
33  uintptr_t start_addr;
34  uintptr_t end_addr;
35  struct nhlt *nhlt;
36 
37  start_addr = current;
38 
39  nhlt = nhlt_init();
40 
41  if (nhlt == NULL)
42  return start_addr;
43 
45 
46  end_addr = nhlt_soc_serialize(nhlt, start_addr);
47 
48  if (end_addr != start_addr)
49  acpi_add_table(rsdp, (void *)start_addr);
50 
51  return end_addr;
52 }
53 
54 static void mainboard_enable(struct device *dev)
55 {
56  dev->ops->write_acpi_tables = mainboard_write_acpi_tables;
57 }
58 
61  .enable_dev = mainboard_enable,
62 };
struct chip_operations mainboard_ops
Definition: mainboard.c:19
void acpi_add_table(acpi_rsdp_t *rsdp, void *table)
Add an ACPI table to the RSDT (and XSDT) structure, recalculate length and checksum.
Definition: acpi.c:49
#define printk(level,...)
Definition: stdlib.h:16
void mainboard_ec_init(void)
Definition: ec.c:8
uint32_t board_id(void)
board_id() - Get the board version
Definition: ec_boardid.c:6
void variant_nhlt_init(struct nhlt *nhlt)
Definition: nhlt.c:7
uintptr_t nhlt_soc_serialize(struct nhlt *nhlt, uintptr_t acpi_addr)
Definition: nhlt.c:7
struct nhlt * nhlt_init(void)
Definition: nhlt.c:23
static unsigned long mainboard_write_acpi_tables(const struct device *device, unsigned long current, acpi_rsdp_t *rsdp)
Definition: mainboard.c:30
static void mainboard_init(void *chip_info)
Definition: mainboard.c:15
static void mainboard_enable(struct device *dev)
Definition: mainboard.c:54
#define BIOS_INFO
BIOS_INFO - Expected events.
Definition: loglevel.h:113
const struct pad_config *__weak variant_gpio_table(size_t *num)
Definition: gpio.c:406
void gpio_configure_pads(const struct soc_amd_gpio *gpio_list_ptr, size_t size)
program a particular set of GPIO
Definition: gpio.c:307
#define NULL
Definition: stddef.h:19
unsigned long uintptr_t
Definition: stdint.h:21
Definition: acpi.h:82
void(* init)(void *chip_info)
Definition: device.h:25
Definition: device.h:107
struct device_operations * ops
Definition: device.h:143
Definition: nhlt.h:287