1 files changed, 132 insertions, 0 deletions
diff --git a/board/beacon/imx8mp/spl.c b/board/beacon/imx8mp/spl.c
new file mode 100644
index 0000000000..591e8ca9ab
--- /dev/null
+++ b/board/beacon/imx8mp/spl.c
@@ -0,0 +1,132 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2022 Logic PD, Inc dba Beacon EmbeddedWorks
+ *
+ */
+
+#include <common.h>
+#include <hang.h>
+#include <init.h>
+#include <log.h>
+#include <spl.h>
+#include <asm/global_data.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx8mp_pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/mach-imx/boot_mode.h>
+#include <asm/mach-imx/gpio.h>
+#include <asm/mach-imx/iomux-v3.h>
+#include <asm/mach-imx/mxc_i2c.h>
+#include <asm/arch/ddr.h>
+#include <power/pmic.h>
+#include <power/pca9450.h>
+#include <dm/uclass.h>
+#include <dm/device.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)
+{
+	if (IS_ENABLED(CONFIG_FSL_CAAM)) {
+		struct udevice *dev;
+		int ret;
+
+		ret = uclass_get_device_by_driver(UCLASS_MISC, DM_DRIVER_GET(caam_jr), &dev);
+		if (ret)
+			printf("Failed to initialize caam_jr: %d\n", ret);
+	}
+	/*
+	 * Set GIC clock to 500Mhz for OD VDD_SOC. Kernel driver does
+	 * not allow to change it. Should set the clock after PMIC
+	 * setting done. Default is 400Mhz (system_pll1_800m with div = 2)
+	 * set by ROM for ND VDD_SOC
+	 */
+	if (IS_ENABLED(CONFIG_IMX8M_VDD_SOC_850MV)) {
+		clock_enable(CCGR_GIC, 0);
+		clock_set_target_val(GIC_CLK_ROOT, CLK_ROOT_ON | CLK_ROOT_SOURCE_SEL(5));
+		clock_enable(CCGR_GIC, 1);
+	}
+}
+
+#if CONFIG_IS_ENABLED(DM_PMIC_PCA9450)
+int power_init_board(void)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = pmic_get("pmic@25", &dev);
+	if (ret == -ENODEV) {
+		puts("No pmic@25\n");
+		return 0;
+	}
+	if (ret != 0)
+		return ret;
+
+	/* BUCKxOUT_DVS0/1 control BUCK123 output */
+	pmic_reg_write(dev, PCA9450_BUCK123_DVS, 0x29);
+
+	/*
+	 * increase VDD_SOC to typical value 0.95V before first
+	 * DRAM access, 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)
+	 */
+	if (CONFIG_IS_ENABLED(IMX8M_VDD_SOC_850MV))
+		pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS0, 0x14);
+	else
+		pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS0, 0x1C);
+
+	pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS1, 0x14);
+	pmic_reg_write(dev, PCA9450_BUCK1CTRL, 0x59);
+
+	/* Kernel uses OD/OD freq for SOC */
+	/* To avoid timing risk from SOC to ARM,increase VDD_ARM to OD voltage 0.95v */
+	pmic_reg_write(dev, PCA9450_BUCK2OUT_DVS0, 0x1C);
+
+	return 0;
+}
+#endif
+
+#if IS_ENABLED(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
+
+void board_init_f(ulong dummy)
+{
+	int ret;
+
+	arch_cpu_init();
+
+	init_uart_clk(1);
+
+	ret = spl_early_init();
+	if (ret) {
+		debug("spl_init() failed: %d\n", ret);
+		hang();
+	}
+
+	preloader_console_init();
+
+	enable_tzc380();
+
+	power_init_board();
+
+	/* DDR initialization */
+	spl_dram_init();
+}