board: Add support for Samsung Galaxy S9+ (star2lte)

README.md

@@ -44,6 +44,7 @@ environment in case of a forced and buggy bootloader.
 - ZEROFLTE  
 - DREAMLTE  
 - STARLTE  
+- STAR2LTE  
 - X1S  
 - J5LTE  
 - J4LTE  

board/Kconfig

@@ -136,6 +136,13 @@ menu "Device Support"
 		depends on EXYNOS_9810
 		help
 		  Say Y if you want to include support for Samsung Galaxy S9
+
+	config SAMSUNG_STAR2LTE
+		bool "Support for Samsung Galaxy S9+"
+		default n
+		depends on EXYNOS_9810
+		help
+		  Say Y if you want to include support for Samsung Galaxy S9+
 
 	config SAMSUNG_X1S
 		bool "Support for Samsung Galaxy S20"

board/Makefile

@@ -15,6 +15,7 @@ lib-$(CONFIG_SAMSUNG_JACKPOTLTE) += samsung/board-jackpotlte.o
 lib-$(CONFIG_SAMSUNG_ZEROFLTE) += samsung/board-zeroflte.o
 lib-$(CONFIG_SAMSUNG_DREAMLTE) += samsung/board-dreamlte.o
 lib-$(CONFIG_SAMSUNG_STARLTE) += samsung/board-starlte.o
+lib-$(CONFIG_SAMSUNG_STAR2LTE) += samsung/board-star2lte.o
 lib-$(CONFIG_SAMSUNG_X1S) += samsung/board-x1s.o
 lib-$(CONFIG_SAMSUNG_J5LTE) += samsung/board-j5lte.o
 lib-$(CONFIG_SAMSUNG_J4LTE) += samsung/board-j4lte.o

board/samsung/board-star2lte.c

@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2022, Markuss Broks <[email protected]>
+ * Copyright (c) 2024, Ivaylo Ivanov <[email protected]>
+ * Copyright (c) 2025, Leah <[email protected]>
+ */
+#include <board.h>
+#include <drivers/framework.h>
+#include <lib/simplefb.h>
+
+#define DECON_F_BASE		0x16030000
+#define HW_SW_TRIG_CONTROL	0x70
+
+// Early initialization
+int star2lte_init(void)
+{
+	/* Allow framebuffer to be written to */
+	*(int*) (DECON_F_BASE + HW_SW_TRIG_CONTROL) = 0x1281;
+	return 0;
+}
+
+#ifdef CONFIG_SIMPLE_FB
+static struct video_info star2lte_fb = {
+	.format = FB_FORMAT_ARGB8888,
+	.width = 1440,
+	.height = 2960,
+	.stride = 4,
+	.address = (void *)0xcc000000
+};
+#endif
+
+int star2lte_drv(void)
+{
+#ifdef CONFIG_SIMPLE_FB
+	REGISTER_DRIVER("simplefb", simplefb_probe, &star2lte_fb);
+#endif
+	return 0;
+}
+
+struct board_data board_ops = {
+	.name = "samsung-star2lte",
+	.ops = {
+		.early_init = star2lte_init,
+		.drivers_init = star2lte_drv,
+	},
+	.quirks = 0
+};

configs/star2lte_defconfig

@@ -0,0 +1,6 @@
+CONFIG_POSITION_INDEPENDENT=y
+CONFIG_EXYNOS_9810=y
+CONFIG_SAMSUNG_STAR2LTE=y
+CONFIG_TEXT_BASE=0x87000000
+CONFIG_PAYLOAD_ENTRY=0x90000000
+CONFIG_RAMDISK_ENTRY=0x84000000