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 <hang.h>
  13 #include <image.h>
  14 #include <init.h>
  15 #include <asm/global_data.h>
  16 #include <asm/io.h>
  17 #include <asm/sections.h>
  18 #include <mach/jz4780.h>
  19 #include <mach/jz4780_dram.h>
  20 #include <mmc.h>
  21 #include <spl.h>
  22
  23 #ifdef CONFIG_SPL_BUILD
  24 /* Pointer to the global data structure for SPL */
  25 DECLARE_GLOBAL_DATA_PTR;
  26 gd_t gdata __attribute__ ((section(".bss")));
  27
  28 void board_init_f(ulong dummy)
  29 {
  30         typedef void __noreturn (*image_entry_noargs_t)(void);
  31         struct mmc *mmc;
  32         unsigned long count;
  33         struct image_header *header;
  34         int ret;
  35
  36         /* Set global data pointer */
  37         gd = &gdata;
  38
  39         timer_init();
  40         pll_init();
  41         sdram_init();
  42         enable_caches();
  43
  44         /* Clear the BSS */
  45         memset(__bss_start, 0, (char *)&__bss_end - __bss_start);
  46
  47         gd->flags |= GD_FLG_SPL_INIT;
  48
  49         ret = mmc_initialize(NULL);
  50         if (ret)
  51                 hang();
  52
  53         mmc = find_mmc_device(BOOT_DEVICE_MMC1);
  54         if (ret)
  55                 hang();
  56
  57         ret = mmc_init(mmc);
  58         if (ret)
  59                 hang();
  60
  61         header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
  62                                          sizeof(struct image_header));
  63
  64         count = blk_dread(mmc_get_blk_desc(mmc),
  65                           CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR,
  66                 0x800, header);
  67         if (count == 0)
  68                 hang();
  69
  70         image_entry_noargs_t image_entry =
  71                 (image_entry_noargs_t)CONFIG_SYS_TEXT_BASE;
  72
  73         image_entry();
  74
  75         hang();
  76 }
  77 #endif /* CONFIG_SPL_BUILD */
  78
  79 ulong board_get_usable_ram_top(ulong total_size)
  80 {
  81         return CONFIG_SYS_SDRAM_BASE + (256 * 1024 * 1024);
  82 }
  83
  84 int print_cpuinfo(void)
  85 {
  86         printf("CPU:   Ingenic JZ4780\n");
  87         return 0;
  88 }