1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2016 Beniamino Galvani <b.galvani@gmail.com>
4 * (C) Copyright 2018 Neil Armstrong <narmstrong@baylibre.com>
9 #include <asm/arch/boot.h>
10 #include <asm/arch/eth.h>
11 #include <asm/arch/axg.h>
12 #include <asm/arch/mem.h>
13 #include <asm/global_data.h>
15 #include <asm/armv8/mmu.h>
16 #include <linux/sizes.h>
18 DECLARE_GLOBAL_DATA_PTR;
20 int meson_get_boot_device(void)
22 return readl(AXG_AO_SEC_GP_CFG0) & AXG_AO_BOOT_DEVICE;
25 /* Configure the reserved memory zones exported by the secure registers
26 * into EFI and DTB reserved memory entries.
28 void meson_init_reserved_memory(void *fdt)
30 u64 bl31_size, bl31_start;
31 u64 bl32_size, bl32_start;
35 * Get ARM Trusted Firmware reserved memory zones in :
36 * - AO_SEC_GP_CFG3: bl32 & bl31 size in KiB, can be 0
37 * - AO_SEC_GP_CFG5: bl31 physical start address, can be NULL
38 * - AO_SEC_GP_CFG4: bl32 physical start address, can be NULL
40 reg = readl(AXG_AO_SEC_GP_CFG3);
42 bl31_size = ((reg & AXG_AO_BL31_RSVMEM_SIZE_MASK)
43 >> AXG_AO_BL31_RSVMEM_SIZE_SHIFT) * SZ_1K;
44 bl32_size = (reg & AXG_AO_BL32_RSVMEM_SIZE_MASK) * SZ_1K;
46 bl31_start = readl(AXG_AO_SEC_GP_CFG5);
47 bl32_start = readl(AXG_AO_SEC_GP_CFG4);
49 /* Add BL31 reserved zone */
50 if (bl31_start && bl31_size)
51 meson_board_add_reserved_memory(fdt, bl31_start, bl31_size);
53 /* Add BL32 reserved zone */
54 if (bl32_start && bl32_size)
55 meson_board_add_reserved_memory(fdt, bl32_start, bl32_size);
58 phys_size_t get_effective_memsize(void)
60 /* Size is reported in MiB, convert it in bytes */
61 return ((readl(AXG_AO_SEC_GP_CFG0) & AXG_AO_MEM_SIZE_MASK)
62 >> AXG_AO_MEM_SIZE_SHIFT) * SZ_1M;
65 static struct mm_region axg_mem_map[] = {
70 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
76 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
78 PTE_BLOCK_PXN | PTE_BLOCK_UXN
85 struct mm_region *mem_map = axg_mem_map;