board/starfive/visionfive2/starfive_visionfive2.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2022 StarFive Technology Co., Ltd.
   4  * Author: Yanhong Wang<yanhong.wang@starfivetech.com>
   5  */
   6
   7 #include <common.h>
   8 #include <cpu_func.h>
   9 #include <dm.h>
  10 #include <fdt_support.h>
  11 #include <env.h>
  12 #include <asm/arch/eeprom.h>
  13 #include <asm/io.h>
  14 #include <asm/sections.h>
  15 #include <linux/bitops.h>
  16
  17 DECLARE_GLOBAL_DATA_PTR;
  18 #define JH7110_L2_PREFETCHER_BASE_ADDR          0x2030000
  19 #define JH7110_L2_PREFETCHER_HART_OFFSET        0x2000
  20 #define FDTFILE_VISIONFIVE2_1_2A \
  21         "starfive/jh7110-starfive-visionfive-2-v1.2a.dtb"
  22 #define FDTFILE_VISIONFIVE2_1_3B \
  23         "starfive/jh7110-starfive-visionfive-2-v1.3b.dtb"
  24
  25 /* enable U74-mc hart1~hart4 prefetcher */
  26 static void enable_prefetcher(void)
  27 {
  28         u8 hart;
  29         u32 *reg;
  30
  31         /* JH7110 use U74MC CORE IP, it include five cores(one S7 and four U7),
  32          * but only U7 cores support prefetcher configuration
  33          */
  34         for (hart = 1; hart < 5; hart++) {
  35                 reg = (void *)(u64)(JH7110_L2_PREFETCHER_BASE_ADDR
  36                                         + hart * JH7110_L2_PREFETCHER_HART_OFFSET);
  37
  38                 mb(); /* memory barrier */
  39                 setbits_le32(reg, 0x1);
  40                 mb(); /* memory barrier */
  41         }
  42 }
  43
  44 /**
  45  * set_fdtfile() - set the $fdtfile variable based on the board revision
  46  */
  47 static void set_fdtfile(void)
  48 {
  49         u8 version;
  50         const char *fdtfile;
  51
  52         version = get_pcb_revision_from_eeprom();
  53         switch (version) {
  54         case 'a':
  55         case 'A':
  56                 fdtfile = FDTFILE_VISIONFIVE2_1_2A;
  57                 break;
  58
  59         case 'b':
  60         case 'B':
  61         default:
  62                 fdtfile = FDTFILE_VISIONFIVE2_1_3B;
  63                 break;
  64         };
  65
  66         env_set("fdtfile", fdtfile);
  67 }
  68
  69 int board_init(void)
  70 {
  71         enable_caches();
  72         enable_prefetcher();
  73
  74         return 0;
  75 }
  76
  77 int board_late_init(void)
  78 {
  79         if (CONFIG_IS_ENABLED(ID_EEPROM))
  80                 set_fdtfile();
  81
  82         return 0;
  83 }
  84
  85 void *board_fdt_blob_setup(int *err)
  86 {
  87         *err = 0;
  88         if (IS_ENABLED(CONFIG_OF_SEPARATE) || IS_ENABLED(CONFIG_OF_BOARD)) {
  89                 if (gd->arch.firmware_fdt_addr)
  90                         return (ulong *)(uintptr_t)gd->arch.firmware_fdt_addr;
  91         }
  92
  93         return (ulong *)&_end;
  94 }
  95
  96 int ft_board_setup(void *blob, struct bd_info *bd)
  97 {
  98         return fdt_fixup_memory(blob, 0x40000000, gd->ram_size);
  99 }