temp_ram_exit.c

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/* SPDX-License-Identifier: GPL-2.0-or-later */
 
#include <arch/romstage.h>
#include <console/console.h>
#include <fsp/api.h>
#include <fsp/util.h>
#include <cbfs.h>
#include <types.h>
 
static void fsp_temp_ram_exit(void)
{
        struct fsp_header hdr;
        uint32_t status;
        temp_ram_exit_fn  temp_ram_exit;
        void *mapping;
        size_t size;
        const char *name = CONFIG_FSP_M_CBFS;
 
        mapping = cbfs_map(name, &size);
        if (!mapping) {
                printk(BIOS_CRIT, "Could not map %s from CBFS\n", name);
                die("FSPM not available for CAR Exit!\n");
        }
 
        if (fsp_validate_component(&hdr, mapping, size) != CB_SUCCESS)
                die("Invalid FSPM header!\n");
 
        temp_ram_exit = (void *)(hdr.image_base + hdr.temp_ram_exit_entry_offset);
        printk(BIOS_DEBUG, "Calling TempRamExit: %p\n", temp_ram_exit);
        status = temp_ram_exit(NULL);
 
        if (status != FSP_SUCCESS)
                die("TempRamExit returned with error 0x%08x!\n", status);
 
        cbfs_unmap(mapping);
}
 
void late_car_teardown(void)
{
        fsp_temp_ram_exit();
}