microblaze-generic.c 1.85 KB
Newer Older
Michal Simek's avatar
Michal Simek committed
1 2 3 4 5
/*
 * (C) Copyright 2007 Michal Simek
 *
 * Michal  SIMEK <monstr@monstr.eu>
 *
6
 * SPDX-License-Identifier:	GPL-2.0+
Michal Simek's avatar
Michal Simek committed
7 8 9 10 11 12
 */

/* This is a board specific file.  It's OK to include board specific
 * header files */

#include <common.h>
13
#include <config.h>
14
#include <fdtdec.h>
15
#include <asm/processor.h>
Michal Simek's avatar
Michal Simek committed
16 17
#include <asm/microblaze_intc.h>
#include <asm/asm.h>
18 19
#include <asm/gpio.h>

20 21
DECLARE_GLOBAL_DATA_PTR;

22 23 24
#ifdef CONFIG_XILINX_GPIO
static int reset_pin = -1;
#endif
Michal Simek's avatar
Michal Simek committed
25

26
#if CONFIG_IS_ENABLED(OF_CONTROL)
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68
ulong ram_base;

void dram_init_banksize(void)
{
	gd->bd->bi_dram[0].start = ram_base;
	gd->bd->bi_dram[0].size = get_effective_memsize();
}

int dram_init(void)
{
	int node;
	fdt_addr_t addr;
	fdt_size_t size;
	const void *blob = gd->fdt_blob;

	node = fdt_node_offset_by_prop_value(blob, -1, "device_type",
					     "memory", 7);
	if (node == -FDT_ERR_NOTFOUND) {
		debug("DRAM: Can't get memory node\n");
		return 1;
	}
	addr = fdtdec_get_addr_size(blob, node, "reg", &size);
	if (addr == FDT_ADDR_T_NONE || size == 0) {
		debug("DRAM: Can't get base address or size\n");
		return 1;
	}
	ram_base = addr;

	gd->ram_top = addr; /* In setup_dest_addr() is done +ram_size */
	gd->ram_size = size;

	return 0;
};
#else
int dram_init(void)
{
	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;

	return 0;
}
#endif

69
int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Michal Simek's avatar
Michal Simek committed
70
{
71
#ifndef CONFIG_SPL_BUILD
72 73 74
#ifdef CONFIG_XILINX_GPIO
	if (reset_pin != -1)
		gpio_direction_output(reset_pin, 1);
Michal Simek's avatar
Michal Simek committed
75
#endif
Michal Simek's avatar
Michal Simek committed
76

77 78 79
#ifdef CONFIG_XILINX_TB_WATCHDOG
	hw_watchdog_disable();
#endif
80
#endif
Michal Simek's avatar
Michal Simek committed
81
	puts ("Reseting board\n");
82 83
	__asm__ __volatile__ ("	mts rmsr, r0;" \
				"bra r0");
Michal Simek's avatar
Michal Simek committed
84

85
	return 0;
Michal Simek's avatar
Michal Simek committed
86 87 88 89
}

int gpio_init (void)
{
90 91 92 93
#ifdef CONFIG_XILINX_GPIO
	reset_pin = gpio_alloc(CONFIG_SYS_GPIO_0_ADDR, "reset", 1);
	if (reset_pin != -1)
		gpio_request(reset_pin, "reset_pin");
Michal Simek's avatar
Michal Simek committed
94 95 96
#endif
	return 0;
}
Michal Simek's avatar
Michal Simek committed
97

98 99 100 101
void board_init(void)
{
	gpio_init();
}