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 <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
  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
  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)
  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