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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2007 Michal Simek
*
* Michal SIMEK <monstr@monstr.eu>
*/
/*
* This is a board specific file. It's OK to include board specific
* header files
*/
#include <common.h>
#include <config.h>
#include <fdtdec.h>
#include <asm/processor.h>
#include <asm/microblaze_intc.h>
#include <asm/asm.h>
#include <asm/gpio.h>
#include <dm/uclass.h>
#include <wdt.h>
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_XILINX_GPIO
static int reset_pin = -1;
#endif
#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_WDT)
static struct udevice *watchdog_dev;
#endif /* !CONFIG_SPL_BUILD && CONFIG_WDT */
ulong ram_base;
int dram_init_banksize(void)
{
gd->bd->bi_dram[0].start = ram_base;
gd->bd->bi_dram[0].size = get_effective_memsize();
return 0;
}
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;
};
#if !defined(CONFIG_SYSRESET) || defined(CONFIG_SPL_BUILD)
int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
#ifndef CONFIG_SPL_BUILD
#ifdef CONFIG_XILINX_GPIO
if (reset_pin != -1)
gpio_direction_output(reset_pin, 1);
#endif
#endif
puts("Resetting board\n");
__asm__ __volatile__ (" mts rmsr, r0;" \
"bra r0");
return 0;
}
#endif
static int gpio_init(void)
{
#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");
#endif
return 0;
}
#ifdef CONFIG_WDT
/* Called by macro WATCHDOG_RESET */
void watchdog_reset(void)
{
#if !defined(CONFIG_SPL_BUILD)
ulong now;
static ulong next_reset;
if (!watchdog_dev)
return;
now = timer_get_us();
/* Do not reset the watchdog too often */
if (now > next_reset) {
wdt_reset(watchdog_dev);
next_reset = now + 1000;
}
#endif /* !CONFIG_SPL_BUILD */
}
#endif /* CONFIG_WDT */
int board_late_init(void)
{
gpio_init();
#if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_WDT)
watchdog_dev = NULL;
if (uclass_get_device_by_seq(UCLASS_WDT, 0, &watchdog_dev)) {
debug("Watchdog: Not found by seq!\n");
if (uclass_get_device(UCLASS_WDT, 0, &watchdog_dev)) {
puts("Watchdog: Not found!\n");
return 0;
}
}
wdt_start(watchdog_dev, 0, 0);
puts("Watchdog: Started\n");
#endif /* !CONFIG_SPL_BUILD && CONFIG_WDT */
return 0;
}
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