LXR uboot/board/xilinx/microblaze-generic/microblaze-generic.c

   1/*
   2 * (C) Copyright 2007 Michal Simek
   3 *
   4 * Michal  SIMEK <monstr@monstr.eu>
   5 *
   6 * SPDX-License-Identifier:     GPL-2.0+
   7 */
   8
   9/* This is a board specific file.  It's OK to include board specific
  10 * header files */
  11
  12#include <common.h>
  13#include <config.h>
  14#include <fdtdec.h>
  15#include <asm/processor.h>
  16#include <asm/microblaze_intc.h>
  17#include <asm/asm.h>
  18#include <asm/gpio.h>
  19
  20DECLARE_GLOBAL_DATA_PTR;
  21
  22#ifdef CONFIG_XILINX_GPIO
  23static int reset_pin = -1;
  24#endif
  25
  26ulong ram_base;
  27
  28int dram_init_banksize(void)
  29{
  30        gd->bd->bi_dram[0].start = ram_base;
  31        gd->bd->bi_dram[0].size = get_effective_memsize();
  32
  33        return 0;
  34}
  35
  36int dram_init(void)
  37{
  38        int node;
  39        fdt_addr_t addr;
  40        fdt_size_t size;
  41        const void *blob = gd->fdt_blob;
  42
  43        node = fdt_node_offset_by_prop_value(blob, -1, "device_type",
  44                                             "memory", 7);
  45        if (node == -FDT_ERR_NOTFOUND) {
  46                debug("DRAM: Can't get memory node\n");
  47                return 1;
  48        }
  49        addr = fdtdec_get_addr_size(blob, node, "reg", &size);
  50        if (addr == FDT_ADDR_T_NONE || size == 0) {
  51                debug("DRAM: Can't get base address or size\n");
  52                return 1;
  53        }
  54        ram_base = addr;
  55
  56        gd->ram_top = addr; /* In setup_dest_addr() is done +ram_size */
  57        gd->ram_size = size;
  58
  59        return 0;
  60};
  61
  62int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  63{
  64#ifndef CONFIG_SPL_BUILD
  65#ifdef CONFIG_XILINX_GPIO
  66        if (reset_pin != -1)
  67                gpio_direction_output(reset_pin, 1);
  68#endif
  69
  70#ifdef CONFIG_XILINX_TB_WATCHDOG
  71        hw_watchdog_disable();
  72#endif
  73#endif
  74        puts ("Reseting board\n");
  75        __asm__ __volatile__ (" mts rmsr, r0;" \
  76                                "bra r0");
  77
  78        return 0;
  79}
  80
  81static int gpio_init(void)
  82{
  83#ifdef CONFIG_XILINX_GPIO
  84        reset_pin = gpio_alloc(CONFIG_SYS_GPIO_0_ADDR, "reset", 1);
  85        if (reset_pin != -1)
  86                gpio_request(reset_pin, "reset_pin");
  87#endif
  88        return 0;
  89}
  90
  91int board_late_init(void)
  92{
  93        gpio_init();
  94
  95        return 0;
  96}
  97