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/* SPDX-License-Identifier: GPL-2.0-only */
#include <acpi/acpi.h>
#include <acpi/acpigen.h>
#include <bootstate.h>
#include <types.h>
#include <string.h>
#include <stdlib.h>
#include <cbfs.h>
#include <cbmem.h>
#include <console/console.h>
#include <ec/google/chromeec/ec.h>
#include <fmap.h>
#include <security/vboot/vbnv.h>
#include <security/vboot/vboot_common.h>
#include <smbios.h>
#include "chromeos.h"
#include "gnvs.h"
static struct chromeos_acpi *chromeos_acpi;
static size_t chromeos_vpd_region(const char *region, uintptr_t *base)
{
struct region_device vpd;
if (fmap_locate_area_as_rdev(region, &vpd))
return 0;
*base = (uintptr_t)rdev_mmap_full(&vpd);
return region_device_sz(&vpd);
}
static void chromeos_init_chromeos_acpi(void *unused)
{
size_t vpd_size;
uintptr_t vpd_base = 0;
chromeos_acpi = cbmem_add(CBMEM_ID_ACPI_CNVS, sizeof(struct chromeos_acpi));
if (!chromeos_acpi)
return;
/* Retain CNVS contents on S3 resume path. */
if (acpi_is_wakeup_s3())
return;
vpd_size = chromeos_vpd_region("RO_VPD", &vpd_base);
if (vpd_size && vpd_base) {
chromeos_acpi->vpd_ro_base = vpd_base;
chromeos_acpi->vpd_ro_size = vpd_size;
}
vpd_size = chromeos_vpd_region("RW_VPD", &vpd_base);
if (vpd_size && vpd_base) {
chromeos_acpi->vpd_rw_base = vpd_base;
chromeos_acpi->vpd_rw_size = vpd_size;
}
}
BOOT_STATE_INIT_ENTRY(BS_PRE_DEVICE, BS_ON_EXIT, chromeos_init_chromeos_acpi, NULL);
void chromeos_set_me_hash(u32 *hash, int len)
{
if ((len*sizeof(u32)) > sizeof(chromeos_acpi->mehh))
return;
/* Copy to NVS. */
if (chromeos_acpi)
memcpy(chromeos_acpi->mehh, hash, len*sizeof(u32));
}
void chromeos_set_ramoops(void *ram_oops, size_t size)
{
if (!chromeos_acpi)
return;
printk(BIOS_DEBUG, "Ramoops buffer: 0x%zx@%p.\n", size, ram_oops);
chromeos_acpi->ramoops_base = (uintptr_t)ram_oops;
chromeos_acpi->ramoops_len = size;
}
void smbios_type0_bios_version(uintptr_t address)
{
if (!chromeos_acpi)
return;
/* Location of smbios_type0.bios_version() string filled with spaces. */
chromeos_acpi->vbt10 = address;
}
void acpi_fill_cnvs(void)
{
const struct opregion cnvs_op = OPREGION("CNVS", SYSTEMMEMORY, (uintptr_t)chromeos_acpi,
sizeof(*chromeos_acpi));
if (!chromeos_acpi)
return;
acpigen_write_scope("\\");
acpigen_write_opregion(&cnvs_op);
acpigen_pop_len();
chromeos_acpi_gpio_generate();
}
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