fsp-acpi.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <acpi/acpi.h>
#include <amdblocks/acpi.h>
#include <console/console.h>
#include <fsp/util.h>
#include <string.h>
#include <types.h>
 
struct amd_fsp_acpi_hob_info {
        uint32_t table_size_in_bytes;
        uint8_t total_hobs_for_table;
        uint8_t sequence_number;
        uint16_t reserved;
        uint16_t hob_payload[0xffc8]; /* maximum payload size */
} __packed;
 
uintptr_t add_agesa_fsp_acpi_table(guid_t guid, const char *name, acpi_rsdp_t *rsdp,
                                   uintptr_t current)
{
        const struct amd_fsp_acpi_hob_info *data;
        void *table = (void *)current;
        size_t hob_size;
 
        data = fsp_find_extension_hob_by_guid(guid.b, &hob_size);
        if (!data) {
                printk(BIOS_ERR, "AGESA %s ACPI table was not found.\n", name);
                return current;
        }
 
        if (data->table_size_in_bytes > sizeof(data->hob_payload)) {
                printk(BIOS_ERR, "AGESA %s ACPI table size larger than maximum HOB payload "
                       "size.\n", name);
                return current;
        }
 
        printk(BIOS_INFO, "ACPI:    * %s (AGESA).\n", name);
 
        memcpy(table, data->hob_payload, data->table_size_in_bytes);
 
        current += data->table_size_in_bytes;
        acpi_add_table(rsdp, table);
        current = acpi_align_current(current);
 
        return current;
}