1 files changed, 167 insertions, 0 deletions
diff --git a/roms/u-boot/board/freescale/imx8mn_evk/spl.c b/roms/u-boot/board/freescale/imx8mn_evk/spl.c
new file mode 100644
index 000000000..03f2a56e8
--- /dev/null
+++ b/roms/u-boot/board/freescale/imx8mn_evk/spl.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright 2018-2019 NXP
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <cpu_func.h>
+#include <hang.h>
+#include <image.h>
+#include <init.h>
+#include <log.h>
+#include <spl.h>
+#include <asm/global_data.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>
+#include <power/pmic.h>
+#include <power/pca9450.h>
+#include <asm/mach-imx/gpio.h>
+#include <asm/mach-imx/mxc_i2c.h>
+#include <fsl_esdhc_imx.h>
+#include <mmc.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");
+}
+
+#if CONFIG_IS_ENABLED(DM_PMIC_PCA9450)
+int power_init_board(void)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = pmic_get("pca9450@25", &dev);
+	if (ret == -ENODEV) {
+		puts("No pca9450@25\n");
+		return 0;
+	}
+	if (ret != 0)
+		return ret;
+
+	/* BUCKxOUT_DVS0/1 control BUCK123 output */
+	pmic_reg_write(dev, PCA9450_BUCK123_DVS, 0x29);
+
+#ifdef CONFIG_IMX8MN_LOW_DRIVE_MODE
+	/* Set VDD_SOC/VDD_DRAM to 0.8v for low drive mode */
+	pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS0, 0x10);
+#else
+	/* increase VDD_SOC/VDD_DRAM to typical value 0.95V before first DRAM access */
+	pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS0, 0x1C);
+#endif
+	/* Set DVS1 to 0.85v for suspend */
+	/* Enable DVS control through PMIC_STBY_REQ and set B1_ENMODE=1 (ON by PMIC_ON_REQ=H) */
+	pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS1, 0x14);
+	pmic_reg_write(dev, PCA9450_BUCK1CTRL, 0x59);
+
+	/* set VDD_SNVS_0V8 from default 0.85V */
+	pmic_reg_write(dev, PCA9450_LDO2CTRL, 0xC0);
+
+	/* enable LDO4 to 1.2v */
+	pmic_reg_write(dev, PCA9450_LDO4CTRL, 0x44);
+
+	/* set WDOG_B_CFG to cold reset */
+	pmic_reg_write(dev, PCA9450_RESET_CTRL, 0xA1);
+
+	return 0;
+}
+#endif
+
+#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));
+
+	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);
+}