1*33e33780SJerome Brunet // SPDX-License-Identifier: GPL-2.0+ 2*33e33780SJerome Brunet /* 3*33e33780SJerome Brunet * (C) Copyright 2016 Beniamino Galvani <b.galvani@gmail.com> 4*33e33780SJerome Brunet */ 5*33e33780SJerome Brunet 6*33e33780SJerome Brunet #include <common.h> 7*33e33780SJerome Brunet #include <linux/libfdt.h> 8*33e33780SJerome Brunet #include <linux/err.h> 9*33e33780SJerome Brunet #include <asm/arch/mem.h> 10*33e33780SJerome Brunet #include <asm/arch/sm.h> 11*33e33780SJerome Brunet #include <asm/armv8/mmu.h> 12*33e33780SJerome Brunet #include <asm/unaligned.h> 13*33e33780SJerome Brunet #include <efi_loader.h> 14*33e33780SJerome Brunet 15*33e33780SJerome Brunet DECLARE_GLOBAL_DATA_PTR; 16*33e33780SJerome Brunet 17*33e33780SJerome Brunet int dram_init(void) 18*33e33780SJerome Brunet { 19*33e33780SJerome Brunet const fdt64_t *val; 20*33e33780SJerome Brunet int offset; 21*33e33780SJerome Brunet int len; 22*33e33780SJerome Brunet 23*33e33780SJerome Brunet offset = fdt_path_offset(gd->fdt_blob, "/memory"); 24*33e33780SJerome Brunet if (offset < 0) 25*33e33780SJerome Brunet return -EINVAL; 26*33e33780SJerome Brunet 27*33e33780SJerome Brunet val = fdt_getprop(gd->fdt_blob, offset, "reg", &len); 28*33e33780SJerome Brunet if (len < sizeof(*val) * 2) 29*33e33780SJerome Brunet return -EINVAL; 30*33e33780SJerome Brunet 31*33e33780SJerome Brunet /* Use unaligned access since cache is still disabled */ 32*33e33780SJerome Brunet gd->ram_size = get_unaligned_be64(&val[1]); 33*33e33780SJerome Brunet 34*33e33780SJerome Brunet return 0; 35*33e33780SJerome Brunet } 36*33e33780SJerome Brunet 37*33e33780SJerome Brunet void meson_board_add_reserved_memory(void *fdt, u64 start, u64 size) 38*33e33780SJerome Brunet { 39*33e33780SJerome Brunet int ret; 40*33e33780SJerome Brunet 41*33e33780SJerome Brunet ret = fdt_add_mem_rsv(fdt, start, size); 42*33e33780SJerome Brunet if (ret) 43*33e33780SJerome Brunet printf("Could not reserve zone @ 0x%llx\n", start); 44*33e33780SJerome Brunet 45*33e33780SJerome Brunet if (IS_ENABLED(CONFIG_EFI_LOADER)) { 46*33e33780SJerome Brunet efi_add_memory_map(start, 47*33e33780SJerome Brunet ALIGN(size, EFI_PAGE_SIZE) >> EFI_PAGE_SHIFT, 48*33e33780SJerome Brunet EFI_RESERVED_MEMORY_TYPE, false); 49*33e33780SJerome Brunet } 50*33e33780SJerome Brunet } 51*33e33780SJerome Brunet 52*33e33780SJerome Brunet void reset_cpu(ulong addr) 53*33e33780SJerome Brunet { 54*33e33780SJerome Brunet psci_system_reset(); 55*33e33780SJerome Brunet } 56