apusys.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <console/console.h>
#include <device/mmio.h>
#include <soc/apusys.h>
#include <soc/infracfg.h>
 
/* INFRA2APU_SRAM_PROT_EN */
DEFINE_BITFIELD(PROT_EN, 31, 30)
 
/* MBOX Functional Configuration */
DEFINE_BITFIELD(LOCK, 0, 0)
DEFINE_BITFIELD(NO_MPU, 16, 16)
 
static void dump_apusys_reg(void)
{
        int i;
 
        printk(BIOS_INFO, "INFRA2APU_SRAM_PROT_EN %p = %#x\n",
               (void *)&mt8192_infracfg->infra_ao_mm_hang_free,
               read32(&mt8192_infracfg->infra_ao_mm_hang_free));
 
        for (i = 0; i < ARRAY_SIZE(mt8192_apu_mbox); i++) {
                printk(BIOS_INFO, "APU_MBOX %p = %#x\n",
                       (void *)&mt8192_apu_mbox[i]->mbox_func_cfg,
                       read32(&mt8192_apu_mbox[i]->mbox_func_cfg));
        }
}
 
void apusys_init(void)
{
        int i;
 
        SET32_BITFIELDS(&mt8192_infracfg->infra_ao_mm_hang_free, PROT_EN, 0);
 
        /* Setup MBOX MPU for non secure access */
        for (i = 0; i < ARRAY_SIZE(mt8192_apu_mbox); i++)
                SET32_BITFIELDS(&mt8192_apu_mbox[i]->mbox_func_cfg, NO_MPU, 1, LOCK, 1);
 
        dump_apusys_reg();
}