lockdown.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <device/mmio.h>
#include <intelblocks/cfg.h>
#include <intelblocks/pmclib.h>
#include <intelpch/lockdown.h>
#include <soc/pm.h>
 
static void pmc_lockdown_config(void)
{
        uint8_t *pmcbase;
        u32 pmsyncreg;
 
        /* PMSYNC */
        pmcbase = pmc_mmio_regs();
        pmsyncreg = read32(pmcbase + PMSYNC_TPR_CFG);
        pmsyncreg |= PMSYNC_LOCK;
        write32(pmcbase + PMSYNC_TPR_CFG, pmsyncreg);
 
        /* Make sure payload/OS can't trigger global reset */
        pmc_global_reset_disable_and_lock();
}
 
void soc_lockdown_config(int chipset_lockdown)
{
        /* PMC lock down configuration */
        pmc_lockdown_config();
}