u-boot/board/freescale/imx8mn_evk/spl.c
Claudius Heine b9bb1d06e2 imx: imx8m*: Remove do_reset from board files
Use the `do_reset` implementation of `arch/arm/lib/reset.c` in SPL
instead.  It is very close to what is done here, anyway, and plays
more nicely with the rest of U-Boot than adding a custom `do_reset`
implementation into board files.

`do_reset` from `arch/arm/lib/reset.c` calls `reset_cpu` with 0 as the
addr parameter while the boards are passing WDOG1_BASE_ADDR.  This is
ok because the `reset_cpu` implementation uses WDOG1_BASE_ADDR by
default if 0 is passed in.

Co-Authored-by: Harald Seiler <hws@denx.de>
Signed-off-by: Claudius Heine <ch@denx.de>
Signed-off-by: Harald Seiler <hws@denx.de>
Reviewed-by: Marek Vasut <marex@denx.de>
2020-05-01 13:46:22 +02:00

116 lines
2.2 KiB
C

/*
* Copyright 2018-2019 NXP
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <cpu_func.h>
#include <hang.h>
#include <spl.h>
#include <asm/io.h>
#include <asm/mach-imx/iomux-v3.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx8mn_pins.h>
#include <asm/arch/sys_proto.h>
#include <asm/mach-imx/boot_mode.h>
#include <asm/arch/ddr.h>
#include <dm/uclass.h>
#include <dm/device.h>
#include <dm/uclass-internal.h>
#include <dm/device-internal.h>
DECLARE_GLOBAL_DATA_PTR;
int spl_board_boot_device(enum boot_device boot_dev_spl)
{
return BOOT_DEVICE_BOOTROM;
}
void spl_dram_init(void)
{
ddr_init(&dram_timing);
}
void spl_board_init(void)
{
struct udevice *dev;
int ret;
puts("Normal Boot\n");
ret = uclass_get_device_by_name(UCLASS_CLK,
"clock-controller@30380000",
&dev);
if (ret < 0)
printf("Failed to find clock node. Check device tree\n");
}
#ifdef CONFIG_SPL_LOAD_FIT
int board_fit_config_name_match(const char *name)
{
/* Just empty function now - can't decide what to choose */
debug("%s: %s\n", __func__, name);
return 0;
}
#endif
#define UART_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_FSEL1)
#define WDOG_PAD_CTRL (PAD_CTL_DSE6 | PAD_CTL_ODE | PAD_CTL_PUE | PAD_CTL_PE)
static iomux_v3_cfg_t const uart_pads[] = {
IMX8MN_PAD_UART2_RXD__UART2_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
IMX8MN_PAD_UART2_TXD__UART2_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
};
static iomux_v3_cfg_t const wdog_pads[] = {
IMX8MN_PAD_GPIO1_IO02__WDOG1_WDOG_B | MUX_PAD_CTRL(WDOG_PAD_CTRL),
};
int board_early_init_f(void)
{
struct wdog_regs *wdog = (struct wdog_regs *)WDOG1_BASE_ADDR;
imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
set_wdog_reset(wdog);
imx_iomux_v3_setup_multiple_pads(uart_pads, ARRAY_SIZE(uart_pads));
init_uart_clk(1);
return 0;
}
void board_init_f(ulong dummy)
{
int ret;
arch_cpu_init();
init_uart_clk(1);
board_early_init_f();
timer_init();
preloader_console_init();
/* Clear the BSS. */
memset(__bss_start, 0, __bss_end - __bss_start);
ret = spl_init();
if (ret) {
debug("spl_init() failed: %d\n", ret);
hang();
}
enable_tzc380();
/* DDR initialization */
spl_dram_init();
board_init_r(NULL, 0);
}