mmu_cmops.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <device/mmio.h>
#include <soc/mcucfg.h>
#include <soc/mmu_operations.h>
#include <soc/symbols.h>
 
DEFINE_BIT(MP0_CLUSTER_CFG0_L3_SHARE_EN, 9)
DEFINE_BIT(MP0_CLUSTER_CFG0_L3_SHARE_PRE_EN, 8)
 
void mtk_soc_disable_l2c_sram(void)
{
        unsigned long v;
 
        SET32_BITFIELDS(&mtk_mcucfg->mp0_cluster_cfg0,
                        MP0_CLUSTER_CFG0_L3_SHARE_EN, 0);
        dsb();
 
        __asm__ volatile ("mrs %0, S3_0_C15_C3_5" : "=r" (v));
        v |= (0xf << 4);
        __asm__ volatile ("msr S3_0_C15_C3_5, %0" : : "r" (v));
        dsb();
 
        do {
                __asm__ volatile ("mrs %0, S3_0_C15_C3_7" : "=r" (v));
        } while (((v >> 0x4) & 0xf) != 0xf);
 
        SET32_BITFIELDS(&mtk_mcucfg->mp0_cluster_cfg0,
                        MP0_CLUSTER_CFG0_L3_SHARE_PRE_EN, 0);
        dsb();
}
 
/* mtk_soc_after_dram is called in romstage */
void mtk_soc_after_dram(void)
{
        mmu_config_range(_dram_dma, REGION_SIZE(dram_dma),
                         NONSECURE_UNCACHED_MEM);
}