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arm: add initial support for Amlogic Meson and ODROID-C2
[J-u-boot.git] / arch / arm / mach-meson / board.c
1 /*
2  * (C) Copyright 2016 Beniamino Galvani <[email protected]>
3  *
4  * SPDX-License-Identifier:     GPL-2.0+
5  */
6
7 #include <common.h>
8 #include <libfdt.h>
9 #include <linux/err.h>
10 #include <asm/arch/gxbb.h>
11 #include <asm/armv8/mmu.h>
12 #include <asm/unaligned.h>
13
14 DECLARE_GLOBAL_DATA_PTR;
15
16 int dram_init(void)
17 {
18         const fdt64_t *val;
19         int offset;
20         int len;
21
22         offset = fdt_path_offset(gd->fdt_blob, "/memory");
23         if (offset < 0)
24                 return -EINVAL;
25
26         val = fdt_getprop(gd->fdt_blob, offset, "reg", &len);
27         if (len < sizeof(*val) * 2)
28                 return -EINVAL;
29
30         /* Use unaligned access since cache is still disabled */
31         gd->ram_size = get_unaligned_be64(&val[1]);
32
33         return 0;
34 }
35
36 void dram_init_banksize(void)
37 {
38         /* Reserve first 16 MiB of RAM for firmware */
39         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE + (16 * 1024 * 1024);
40         gd->bd->bi_dram[0].size = gd->ram_size - (16 * 1024 * 1024);
41 }
42
43 void reset_cpu(ulong addr)
44 {
45         psci_system_reset(true);
46 }
47
48 static struct mm_region gxbb_mem_map[] = {
49         {
50                 .base = 0x0UL,
51                 .size = 0x80000000UL,
52                 .attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
53                          PTE_BLOCK_INNER_SHARE
54         }, {
55                 .base = 0x80000000UL,
56                 .size = 0x80000000UL,
57                 .attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
58                          PTE_BLOCK_NON_SHARE |
59                          PTE_BLOCK_PXN | PTE_BLOCK_UXN
60         }, {
61                 /* List terminator */
62                 0,
63         }
64 };
65
66 struct mm_region *mem_map = gxbb_mem_map;
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