board/renesas/rcar-common/common.c

   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 <init.h>
  13 #include <dm/uclass-internal.h>
  14 #include <asm/arch/rmobile.h>
  15 #include <linux/libfdt.h>
  16
  17 #ifdef CONFIG_RCAR_GEN3
  18
  19 DECLARE_GLOBAL_DATA_PTR;
  20
  21 /* If the firmware passed a device tree use it for U-Boot DRAM setup. */
  22 extern u64 rcar_atf_boot_args[];
  23
  24 int fdtdec_board_setup(const void *fdt_blob)
  25 {
  26         void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]);
  27
  28         if (fdt_magic(atf_fdt_blob) == FDT_MAGIC)
  29                 fdt_overlay_apply_node((void *)fdt_blob, 0, atf_fdt_blob, 0);
  30
  31         return 0;
  32 }
  33
  34 int dram_init(void)
  35 {
  36         return fdtdec_setup_mem_size_base();
  37 }
  38
  39 int dram_init_banksize(void)
  40 {
  41         fdtdec_setup_memory_banksize();
  42
  43         return 0;
  44 }
  45
  46 #if CONFIG_IS_ENABLED(OF_BOARD_SETUP) && CONFIG_IS_ENABLED(PCI)
  47 int ft_board_setup(void *blob, struct bd_info *bd)
  48 {
  49         struct udevice *dev;
  50         struct uclass *uc;
  51         fdt_addr_t regs_addr;
  52         int i, off, ret;
  53
  54         ret = uclass_get(UCLASS_PCI, &uc);
  55         if (ret)
  56                 return ret;
  57
  58         uclass_foreach_dev(dev, uc) {
  59                 struct pci_controller hose = { 0 };
  60
  61                 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
  62                         if (hose.region_count == MAX_PCI_REGIONS) {
  63                                 printf("maximum number of regions parsed, aborting\n");
  64                                 break;
  65                         }
  66
  67                         if (bd->bi_dram[i].size) {
  68                                 pci_set_region(&hose.regions[hose.region_count++],
  69                                                bd->bi_dram[i].start,
  70                                                bd->bi_dram[i].start,
  71                                                bd->bi_dram[i].size,
  72                                                PCI_REGION_MEM |
  73                                                PCI_REGION_PREFETCH |
  74                                                PCI_REGION_SYS_MEMORY);
  75                         }
  76                 }
  77
  78                 regs_addr = devfdt_get_addr_index(dev, 0);
  79                 off = fdt_node_offset_by_compat_reg(blob,
  80                                 "renesas,pcie-rcar-gen3", regs_addr);
  81                 if (off < 0) {
  82                         printf("Failed to find PCIe node@%llx\n", regs_addr);
  83                         return off;
  84                 }
  85
  86                 fdt_pci_dma_ranges(blob, off, &hose);
  87         }
  88
  89         return 0;
  90 }
  91 #endif
  92 #endif