LXR uboot/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 */
  25DECLARE_GLOBAL_DATA_PTR;
  26gd_t gdata __section(".bss");
  27
  28void 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
  79ulong board_get_usable_ram_top(ulong total_size)
  80{
  81        return CONFIG_SYS_SDRAM_BASE + (256 * 1024 * 1024);
  82}
  83
  84int print_cpuinfo(void)
  85{
  86        printf("CPU:   Ingenic JZ4780\n");
  87        return 0;
  88}
  89