Tom Rini | 10e4779 | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Nobuhiro Iwamatsu | a541344 | 2014-12-02 16:52:20 +0900 | [diff] [blame] | 2 | /* |
Nobuhiro Iwamatsu | 8040395 | 2016-04-01 03:51:33 +0900 | [diff] [blame] | 3 | * board/renesas/rcar-common/common.c |
Nobuhiro Iwamatsu | a541344 | 2014-12-02 16:52:20 +0900 | [diff] [blame] | 4 | * |
| 5 | * Copyright (C) 2013 Renesas Electronics Corporation |
| 6 | * Copyright (C) 2013 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> |
Nobuhiro Iwamatsu | 4dc515a | 2016-04-01 03:51:34 +0900 | [diff] [blame] | 7 | * Copyright (C) 2015 Nobuhiro Iwamatsu <iwamatsu@nigauri.org> |
Nobuhiro Iwamatsu | a541344 | 2014-12-02 16:52:20 +0900 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #include <common.h> |
Marek Vasut | 45eaf05 | 2019-07-09 01:46:35 +0200 | [diff] [blame] | 11 | #include <dm.h> |
Geert Uytterhoeven | af90acf | 2022-03-29 14:19:08 +0200 | [diff] [blame] | 12 | #include <fdt_support.h> |
Simon Glass | 9758973 | 2020-05-10 11:40:02 -0600 | [diff] [blame] | 13 | #include <init.h> |
Simon Glass | 3ba929a | 2020-10-30 21:38:53 -0600 | [diff] [blame] | 14 | #include <asm/global_data.h> |
Marek Vasut | 45eaf05 | 2019-07-09 01:46:35 +0200 | [diff] [blame] | 15 | #include <dm/uclass-internal.h> |
Nobuhiro Iwamatsu | a541344 | 2014-12-02 16:52:20 +0900 | [diff] [blame] | 16 | #include <asm/arch/rmobile.h> |
Simon Glass | 2dc9c34 | 2020-05-10 11:40:01 -0600 | [diff] [blame] | 17 | #include <linux/libfdt.h> |
Marek Vasut | 276a1d8 | 2019-05-19 23:25:16 +0200 | [diff] [blame] | 18 | |
| 19 | #ifdef CONFIG_RCAR_GEN3 |
| 20 | |
| 21 | DECLARE_GLOBAL_DATA_PTR; |
| 22 | |
Geert Uytterhoeven | af90acf | 2022-03-29 14:19:08 +0200 | [diff] [blame] | 23 | /* If the firmware passed a device tree use it for e.g. U-Boot DRAM setup. */ |
Marek Vasut | 276a1d8 | 2019-05-19 23:25:16 +0200 | [diff] [blame] | 24 | extern u64 rcar_atf_boot_args[]; |
| 25 | |
Geert Uytterhoeven | af90acf | 2022-03-29 14:19:08 +0200 | [diff] [blame] | 26 | #define FDT_RPC_PATH "/soc/spi@ee200000" |
| 27 | |
Marek Vasut | da8646a | 2020-04-11 20:50:24 +0200 | [diff] [blame] | 28 | int fdtdec_board_setup(const void *fdt_blob) |
Marek Vasut | 276a1d8 | 2019-05-19 23:25:16 +0200 | [diff] [blame] | 29 | { |
Marek Vasut | da8646a | 2020-04-11 20:50:24 +0200 | [diff] [blame] | 30 | void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]); |
Marek Vasut | 276a1d8 | 2019-05-19 23:25:16 +0200 | [diff] [blame] | 31 | |
Marek Vasut | 276a1d8 | 2019-05-19 23:25:16 +0200 | [diff] [blame] | 32 | if (fdt_magic(atf_fdt_blob) == FDT_MAGIC) |
Marek Vasut | da8646a | 2020-04-11 20:50:24 +0200 | [diff] [blame] | 33 | fdt_overlay_apply_node((void *)fdt_blob, 0, atf_fdt_blob, 0); |
Marek Vasut | 276a1d8 | 2019-05-19 23:25:16 +0200 | [diff] [blame] | 34 | |
Marek Vasut | da8646a | 2020-04-11 20:50:24 +0200 | [diff] [blame] | 35 | return 0; |
Marek Vasut | 276a1d8 | 2019-05-19 23:25:16 +0200 | [diff] [blame] | 36 | } |
| 37 | |
Marek Vasut | da8646a | 2020-04-11 20:50:24 +0200 | [diff] [blame] | 38 | int dram_init(void) |
Marek Vasut | 276a1d8 | 2019-05-19 23:25:16 +0200 | [diff] [blame] | 39 | { |
Michal Simek | c7ac6ac | 2020-07-10 13:16:48 +0200 | [diff] [blame] | 40 | return fdtdec_setup_mem_size_base(); |
Marek Vasut | da8646a | 2020-04-11 20:50:24 +0200 | [diff] [blame] | 41 | } |
Marek Vasut | 276a1d8 | 2019-05-19 23:25:16 +0200 | [diff] [blame] | 42 | |
Marek Vasut | da8646a | 2020-04-11 20:50:24 +0200 | [diff] [blame] | 43 | int dram_init_banksize(void) |
| 44 | { |
Michal Simek | c7ac6ac | 2020-07-10 13:16:48 +0200 | [diff] [blame] | 45 | fdtdec_setup_memory_banksize(); |
Marek Vasut | 276a1d8 | 2019-05-19 23:25:16 +0200 | [diff] [blame] | 46 | |
| 47 | return 0; |
| 48 | } |
Marek Vasut | ce52852 | 2021-04-03 16:58:49 +0200 | [diff] [blame] | 49 | |
| 50 | #if defined(CONFIG_OF_BOARD_SETUP) |
| 51 | static int is_mem_overlap(void *blob, int first_mem_node, int curr_mem_node) |
| 52 | { |
| 53 | struct fdt_resource first_mem_res, curr_mem_res; |
| 54 | int curr_mem_reg, first_mem_reg = 0; |
| 55 | int ret; |
| 56 | |
| 57 | for (;;) { |
| 58 | ret = fdt_get_resource(blob, first_mem_node, "reg", |
| 59 | first_mem_reg++, &first_mem_res); |
| 60 | if (ret) /* No more entries, no overlap found */ |
| 61 | return 0; |
| 62 | |
| 63 | curr_mem_reg = 0; |
| 64 | for (;;) { |
| 65 | ret = fdt_get_resource(blob, curr_mem_node, "reg", |
| 66 | curr_mem_reg++, &curr_mem_res); |
| 67 | if (ret) /* No more entries, check next tuple */ |
| 68 | break; |
| 69 | |
| 70 | if (curr_mem_res.end < first_mem_res.start) |
| 71 | continue; |
| 72 | |
| 73 | if (curr_mem_res.start >= first_mem_res.end) |
| 74 | continue; |
| 75 | |
| 76 | printf("Overlap found: 0x%llx..0x%llx / 0x%llx..0x%llx\n", |
| 77 | first_mem_res.start, first_mem_res.end, |
| 78 | curr_mem_res.start, curr_mem_res.end); |
| 79 | |
| 80 | return 1; |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | return 0; |
| 85 | } |
| 86 | |
Geert Uytterhoeven | af90acf | 2022-03-29 14:19:08 +0200 | [diff] [blame] | 87 | static void scrub_duplicate_memory(void *blob) |
Marek Vasut | ce52852 | 2021-04-03 16:58:49 +0200 | [diff] [blame] | 88 | { |
| 89 | /* |
| 90 | * Scrub duplicate /memory@* node entries here. Some R-Car DTs might |
| 91 | * contain multiple /memory@* nodes, however fdt_fixup_memory_banks() |
| 92 | * either generates single /memory node or updates the first /memory |
| 93 | * node. Any remaining memory nodes are thus potential duplicates. |
| 94 | * |
| 95 | * However, it is not possible to delete all the memory nodes right |
| 96 | * away, since some of those might not be DRAM memory nodes, but some |
| 97 | * sort of other memory. Thus, delete only the memory nodes which are |
| 98 | * in the R-Car3 DBSC ranges. |
| 99 | */ |
| 100 | int mem = 0, first_mem_node = 0; |
| 101 | |
| 102 | for (;;) { |
| 103 | mem = fdt_node_offset_by_prop_value(blob, mem, |
| 104 | "device_type", "memory", 7); |
| 105 | if (mem < 0) |
| 106 | break; |
| 107 | if (!fdtdec_get_is_enabled(blob, mem)) |
| 108 | continue; |
| 109 | |
| 110 | /* First memory node, patched by U-Boot */ |
| 111 | if (!first_mem_node) { |
| 112 | first_mem_node = mem; |
| 113 | continue; |
| 114 | } |
| 115 | |
| 116 | /* Check the remaining nodes and delete duplicates */ |
| 117 | if (!is_mem_overlap(blob, first_mem_node, mem)) |
| 118 | continue; |
| 119 | |
| 120 | /* Delete duplicate node, start again */ |
| 121 | fdt_del_node(blob, mem); |
| 122 | first_mem_node = 0; |
| 123 | mem = 0; |
| 124 | } |
Geert Uytterhoeven | af90acf | 2022-03-29 14:19:08 +0200 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | static void update_rpc_status(void *blob) |
| 128 | { |
| 129 | void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]); |
| 130 | int offset, enabled; |
| 131 | |
| 132 | /* |
| 133 | * Check if the DT fragment received from TF-A had its RPC-IF device node |
| 134 | * enabled. |
| 135 | */ |
| 136 | if (fdt_magic(atf_fdt_blob) != FDT_MAGIC) |
| 137 | return; |
| 138 | |
| 139 | offset = fdt_path_offset(atf_fdt_blob, FDT_RPC_PATH); |
| 140 | if (offset < 0) |
| 141 | return; |
| 142 | |
| 143 | enabled = fdtdec_get_is_enabled(atf_fdt_blob, offset); |
| 144 | if (!enabled) |
| 145 | return; |
| 146 | |
| 147 | /* |
| 148 | * Find the RPC-IF device node, and enable it if it has a flash subnode. |
| 149 | */ |
| 150 | offset = fdt_path_offset(blob, FDT_RPC_PATH); |
| 151 | if (offset < 0) |
| 152 | return; |
| 153 | |
| 154 | if (fdt_subnode_offset(blob, offset, "flash") < 0) |
| 155 | return; |
| 156 | |
| 157 | fdt_status_okay(blob, offset); |
| 158 | } |
| 159 | |
| 160 | int ft_board_setup(void *blob, struct bd_info *bd) |
| 161 | { |
| 162 | scrub_duplicate_memory(blob); |
| 163 | update_rpc_status(blob); |
Marek Vasut | ce52852 | 2021-04-03 16:58:49 +0200 | [diff] [blame] | 164 | |
| 165 | return 0; |
| 166 | } |
| 167 | #endif |
Marek Vasut | 276a1d8 | 2019-05-19 23:25:16 +0200 | [diff] [blame] | 168 | #endif |