trustzone.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <device/mmio.h>
#include <soc/trustzone.h>
 
/* Setting TZPC[TrustZone Protection Controller] */
void trustzone_init(void)
{
        struct exynos_tzpc *tzpc;
        unsigned int addr;
 
        for (addr = TZPC0_BASE; addr <= TZPC9_BASE; addr += TZPC_BASE_OFFSET) {
                tzpc = (struct exynos_tzpc *)addr;
 
                if (addr == TZPC0_BASE)
                        write32(&tzpc->r0size, R0SIZE);
 
                write32(&tzpc->decprot0set, DECPROTXSET);
                write32(&tzpc->decprot1set, DECPROTXSET);
 
                if (addr != TZPC9_BASE) {
                        write32(&tzpc->decprot2set, DECPROTXSET);
                        write32(&tzpc->decprot3set, DECPROTXSET);
                }
        }
}