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// SPDX-License-Identifier: GPL-2.0+
/*
* Renesas RCar Gen3 memory map tables
*
* Copyright (C) 2017 Marek Vasut <marek.vasut@gmail.com>
*/
#include <common.h>
#include <asm/armv8/mmu.h>
#define GEN3_NR_REGIONS 16
static struct mm_region gen3_mem_map[GEN3_NR_REGIONS] = {
{
.virt = 0x0UL,
.phys = 0x0UL,
.size = 0x40000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE |
PTE_BLOCK_PXN | PTE_BLOCK_UXN
}, {
.virt = 0x40000000UL,
.phys = 0x40000000UL,
.size = 0x80000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_INNER_SHARE
}, {
.virt = 0xc0000000UL,
.phys = 0xc0000000UL,
.size = 0x40000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE |
PTE_BLOCK_PXN | PTE_BLOCK_UXN
}, {
.virt = 0x100000000UL,
.phys = 0x100000000UL,
.size = 0xf00000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_INNER_SHARE
}, {
/* List terminator */
0,
}
};
struct mm_region *mem_map = gen3_mem_map;
DECLARE_GLOBAL_DATA_PTR;
void enable_caches(void)
{
u64 start, size;
int bank, i = 0;
/* Create map for RPC access */
gen3_mem_map[i].virt = 0x0ULL;
gen3_mem_map[i].phys = 0x0ULL;
gen3_mem_map[i].size = 0x40000000ULL;
gen3_mem_map[i].attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE |
PTE_BLOCK_PXN | PTE_BLOCK_UXN;
i++;
/* Generate entires for DRAM in 32bit address space */
for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
start = gd->bd->bi_dram[bank].start;
size = gd->bd->bi_dram[bank].size;
/* Skip empty DRAM banks */
if (!size)
continue;
/* Skip DRAM above 4 GiB */
if (start >> 32ULL)
continue;
/* Mark memory reserved by ATF as cacheable too. */
if (start == 0x48000000) {
start = 0x40000000ULL;
size += 0x08000000ULL;
}
gen3_mem_map[i].virt = start;
gen3_mem_map[i].phys = start;
gen3_mem_map[i].size = size;
gen3_mem_map[i].attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_INNER_SHARE;
i++;
}
/* Create map for register access */
gen3_mem_map[i].virt = 0xc0000000ULL;
gen3_mem_map[i].phys = 0xc0000000ULL;
gen3_mem_map[i].size = 0x40000000ULL;
gen3_mem_map[i].attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE |
PTE_BLOCK_PXN | PTE_BLOCK_UXN;
i++;
/* Generate entires for DRAM in 64bit address space */
for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
start = gd->bd->bi_dram[bank].start;
size = gd->bd->bi_dram[bank].size;
/* Skip empty DRAM banks */
if (!size)
continue;
/* Skip DRAM below 4 GiB */
if (!(start >> 32ULL))
continue;
gen3_mem_map[i].virt = start;
gen3_mem_map[i].phys = start;
gen3_mem_map[i].size = size;
gen3_mem_map[i].attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_INNER_SHARE;
i++;
}
/* Zero out the remaining regions. */
for (; i < GEN3_NR_REGIONS; i++) {
gen3_mem_map[i].virt = 0;
gen3_mem_map[i].phys = 0;
gen3_mem_map[i].size = 0;
gen3_mem_map[i].attrs = 0;
}
icache_enable();
dcache_enable();
}
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