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1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * board/renesas/rcar-common/common.c
4  *
5  * Copyright (C) 2013 Renesas Electronics Corporation
6  * Copyright (C) 2013 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
7  * Copyright (C) 2015 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
8  */
9 
10 #include <common.h>
11 #include <dm.h>
12 #include <dm/uclass-internal.h>
13 #include <asm/arch/rmobile.h>
14 
15 #ifdef CONFIG_RCAR_GEN3
16 
17 DECLARE_GLOBAL_DATA_PTR;
18 
19 /* If the firmware passed a device tree use it for U-Boot DRAM setup. */
20 extern u64 rcar_atf_boot_args[];
21 
dram_init(void)22 int dram_init(void)
23 {
24 	const void *atf_fdt_blob = (const void *)(rcar_atf_boot_args[1]);
25 	const void *blob;
26 
27 	/* Check if ATF passed us DTB. If not, fall back to builtin DTB. */
28 	if (fdt_magic(atf_fdt_blob) == FDT_MAGIC)
29 		blob = atf_fdt_blob;
30 	else
31 		blob = gd->fdt_blob;
32 
33 	return fdtdec_setup_mem_size_base_fdt(blob);
34 }
35 
dram_init_banksize(void)36 int dram_init_banksize(void)
37 {
38 	const void *atf_fdt_blob = (const void *)(rcar_atf_boot_args[1]);
39 	const void *blob;
40 
41 	/* Check if ATF passed us DTB. If not, fall back to builtin DTB. */
42 	if (fdt_magic(atf_fdt_blob) == FDT_MAGIC)
43 		blob = atf_fdt_blob;
44 	else
45 		blob = gd->fdt_blob;
46 
47 	fdtdec_setup_memory_banksize_fdt(blob);
48 
49 	return 0;
50 }
51 
52 #if CONFIG_IS_ENABLED(OF_BOARD_SETUP) && CONFIG_IS_ENABLED(PCI)
ft_board_setup(void * blob,bd_t * bd)53 int ft_board_setup(void *blob, bd_t *bd)
54 {
55 	struct udevice *dev;
56 	struct uclass *uc;
57 	fdt_addr_t regs_addr;
58 	int i, off, ret;
59 
60 	ret = uclass_get(UCLASS_PCI, &uc);
61 	if (ret)
62 		return ret;
63 
64 	uclass_foreach_dev(dev, uc) {
65 		struct pci_controller hose = { 0 };
66 
67 		for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
68 			if (hose.region_count == MAX_PCI_REGIONS) {
69 				printf("maximum number of regions parsed, aborting\n");
70 				break;
71 			}
72 
73 			if (bd->bi_dram[i].size) {
74 				pci_set_region(&hose.regions[hose.region_count++],
75 					       bd->bi_dram[i].start,
76 					       bd->bi_dram[i].start,
77 					       bd->bi_dram[i].size,
78 					       PCI_REGION_MEM |
79 					       PCI_REGION_PREFETCH |
80 					       PCI_REGION_SYS_MEMORY);
81 			}
82 		}
83 
84 		regs_addr = devfdt_get_addr_index(dev, 0);
85 		off = fdt_node_offset_by_compat_reg(blob,
86 				"renesas,pcie-rcar-gen3", regs_addr);
87 		if (off < 0) {
88 			printf("Failed to find PCIe node@%llx\n", regs_addr);
89 			return off;
90 		}
91 
92 		fdt_pci_dma_ranges(blob, off, &hose);
93 	}
94 
95 	return 0;
96 }
97 #endif
98 #endif
99