cpu.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2016 - 2018 Xilinx, Inc.
* Michal Simek <michal.simek@xilinx.com>
*/
#include <common.h>
#include <asm/armv8/mmu.h>
#include <asm/io.h>
#include <asm/arch/hardware.h>
#include <asm/arch/sys_proto.h>
DECLARE_GLOBAL_DATA_PTR;
#define VERSAL_MEM_MAP_USED 5
#define DRAM_BANKS CONFIG_NR_DRAM_BANKS
#if defined(CONFIG_DEFINE_TCM_OCM_MMAP)
#define TCM_MAP 1
#else
#define TCM_MAP 0
#endif
/* +1 is end of list which needs to be empty */
#define VERSAL_MEM_MAP_MAX (VERSAL_MEM_MAP_USED + DRAM_BANKS + TCM_MAP + 1)
static struct mm_region versal_mem_map[VERSAL_MEM_MAP_MAX] = {
{
.virt = 0x80000000UL,
.phys = 0x80000000UL,
.size = 0x70000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE |
PTE_BLOCK_PXN | PTE_BLOCK_UXN
}, {
.virt = 0xf0000000UL,
.phys = 0xf0000000UL,
.size = 0x0fe00000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE |
PTE_BLOCK_PXN | PTE_BLOCK_UXN
}, {
.virt = 0x400000000UL,
.phys = 0x400000000UL,
.size = 0x200000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE |
PTE_BLOCK_PXN | PTE_BLOCK_UXN
}, {
.virt = 0x600000000UL,
.phys = 0x600000000UL,
.size = 0x800000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_INNER_SHARE
}, {
.virt = 0xe00000000UL,
.phys = 0xe00000000UL,
.size = 0xf200000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE |
PTE_BLOCK_PXN | PTE_BLOCK_UXN
}
};
void mem_map_fill(void)
{
int banks = VERSAL_MEM_MAP_USED;
#if defined(CONFIG_DEFINE_TCM_OCM_MMAP)
versal_mem_map[banks].virt = 0xffe00000UL;
versal_mem_map[banks].phys = 0xffe00000UL;
versal_mem_map[banks].size = 0x00200000UL;
versal_mem_map[banks].attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_INNER_SHARE;
banks = banks + 1;
#endif
for (int i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
/* Zero size means no more DDR that's this is end */
if (!gd->bd->bi_dram[i].size)
break;
versal_mem_map[banks].virt = gd->bd->bi_dram[i].start;
versal_mem_map[banks].phys = gd->bd->bi_dram[i].start;
versal_mem_map[banks].size = gd->bd->bi_dram[i].size;
versal_mem_map[banks].attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_INNER_SHARE;
banks = banks + 1;
}
}
struct mm_region *mem_map = versal_mem_map;
u64 get_page_table_size(void)
{
return 0x14000;
}
#if defined(CONFIG_SYS_MEM_RSVD_FOR_MMU)
int reserve_mmu(void)
{
tcm_init(TCM_LOCK);
gd->arch.tlb_size = PGTABLE_SIZE;
gd->arch.tlb_addr = VERSAL_TCM_BASE_ADDR;
return 0;
}
#endif