arch/mips/mach-jz47xx/jz4780/jz4780.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * JZ4780 common routines
   4  *
   5  * Copyright (c) 2013 Imagination Technologies
   6  * Author: Paul Burton <paul.burton@imgtec.com>
   7  */
   8
   9 #include <config.h>
  10 #include <common.h>
  11 #include <cpu_func.h>
  12 #include <init.h>
  13 #include <asm/io.h>
  14 #include <asm/sections.h>
  15 #include <mach/jz4780.h>
  16 #include <mach/jz4780_dram.h>
  17 #include <mmc.h>
  18 #include <spl.h>
  19
  20 #ifdef CONFIG_SPL_BUILD
  21 /* Pointer to the global data structure for SPL */
  22 DECLARE_GLOBAL_DATA_PTR;
  23 gd_t gdata __attribute__ ((section(".bss")));
  24
  25 void board_init_f(ulong dummy)
  26 {
  27         typedef void __noreturn (*image_entry_noargs_t)(void);
  28         struct mmc *mmc;
  29         unsigned long count;
  30         struct image_header *header;
  31         int ret;
  32
  33         /* Set global data pointer */
  34         gd = &gdata;
  35
  36         timer_init();
  37         pll_init();
  38         sdram_init();
  39         enable_caches();
  40
  41         /* Clear the BSS */
  42         memset(__bss_start, 0, (char *)&__bss_end - __bss_start);
  43
  44         gd->flags |= GD_FLG_SPL_INIT;
  45
  46         ret = mmc_initialize(NULL);
  47         if (ret)
  48                 hang();
  49
  50         mmc = find_mmc_device(BOOT_DEVICE_MMC1);
  51         if (ret)
  52                 hang();
  53
  54         ret = mmc_init(mmc);
  55         if (ret)
  56                 hang();
  57
  58         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
  59                                          sizeof(struct image_header));
  60
  61         count = blk_dread(mmc_get_blk_desc(mmc),
  62                           CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR,
  63                 0x800, header);
  64         if (count == 0)
  65                 hang();
  66
  67         image_entry_noargs_t image_entry =
  68                 (image_entry_noargs_t)CONFIG_SYS_TEXT_BASE;
  69
  70         image_entry();
  71
  72         hang();
  73 }
  74 #endif /* CONFIG_SPL_BUILD */
  75
  76 ulong board_get_usable_ram_top(ulong total_size)
  77 {
  78         return CONFIG_SYS_SDRAM_BASE + (256 * 1024 * 1024);
  79 }
  80
  81 int print_cpuinfo(void)
  82 {
  83         printf("CPU:   Ingenic JZ4780\n");
  84         return 0;
  85 }