board: Add support for r8s (Samsung Galaxy S20 FE)

Signed-off-by: Sota4Ever <wachiturroxd150@gmail.com>

board/Kconfig

@@ -75,6 +75,13 @@ menu "Device Support"
 		depends on EXYNOS_9610
 		help
 		  Say Y if you want to include support for Samsung Galaxy Tab S6 Lite
+
+        config SAMSUNG_R8S
+                bool "Support for Samsung Galaxy S20 FE"
+                default n
+                depends on EXYNOS_990
+                help
+                  Say Y if you want to include support for Samsung Galaxy S20 FE
 endmenu
 
 menu "Device Specific Addresses"
@@ -96,12 +103,14 @@ menu "Device Specific Addresses"
 		default 0x050000000 if SAMSUNG_J4LTE
 		default 0x090000000 if SAMSUNG_J5LTE
 		default 0x090000000 if SAMSUNG_GTA4XL
+                default 0x090000000 if SAMSUNG_R8S
 
 	config RAMDISK_ENTRY
 		hex "Ramdisk Entry Address"
 		default 0x082000000 if SAMSUNG_DREAMLTE
 		default 0x084000000 if SAMSUNG_C1S
 		default 0x084000000 if SAMSUNG_X1S
+                default 0x084000000 if SAMSUNG_R8S
 
 	config FRAMEBUFFER_BASE
 		hex "Framebuffer Base Address (for SimpleFB)"
@@ -117,6 +126,7 @@ menu "Device Specific Addresses"
 		default 0x067000000 if SAMSUNG_J4LTE
 		default 0x08e000000 if SAMSUNG_J5LTE
 		default 0x0ca000000 if SAMSUNG_GTA4XL
+                default 0x0f1000000 if SAMSUNG_R8S
 
 	config FRAMEBUFFER_WIDTH
 		int "Framebuffer Width (for SimpleFB)"
@@ -132,6 +142,7 @@ menu "Device Specific Addresses"
 		default 720 if SAMSUNG_J4LTE
 		default 720 if SAMSUNG_J5LTE
 		default 1200 if SAMSUNG_GTA4XL
+                default 1080 if SAMSUNG_R8S
 
 	config FRAMEBUFFER_HEIGHT
 		int "Framebuffer Height (for SimpleFB)"
@@ -147,6 +158,7 @@ menu "Device Specific Addresses"
 		default 1280 if SAMSUNG_J4LTE
 		default 1280 if SAMSUNG_J5LTE
 		default 2000 if SAMSUNG_GTA4XL
+                default 2400 if SAMSUNG_R8S
 
 	config FRAMEBUFFER_STRIDE
 		int "Framebuffer Stride (for SimpleFB)"
@@ -162,6 +174,7 @@ menu "Device Specific Addresses"
 		default 4 if SAMSUNG_J4LTE
 		default 3 if SAMSUNG_J5LTE
 		default 4 if SAMSUNG_GTA4XL
+                default 4 if SAMSUNG_R8S
 
 	config FRAMEBUFFER_BGRA
 		bool "Framebuffer BGRA (for SimpleFB)"

board/Makefile

@@ -9,3 +9,4 @@ lib-$(CONFIG_SAMSUNG_X1S) += samsung/board-x1s.o
 lib-$(CONFIG_SAMSUNG_J5LTE) += samsung/board-j5lte.o
 lib-$(CONFIG_SAMSUNG_J4LTE) += samsung/board-j4lte.o
 lib-$(CONFIG_SAMSUNG_GTA4XL) += samsung/board-gta4xl.o
+lib-$(CONFIG_SAMSUNG_R8S) += samsung/board-r8s.o

board/samsung/board-r8s.c

@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) Sota4Ever <wachiturroxd150@gmail.com>
+ * Copyright (c) 2024, Ivaylo Ivanov <ivo.ivanov.ivanov1@gmail.com>
+ */
+#include <board.h>
+#include <drivers/framework.h>
+#include <lib/simplefb.h>
+
+#define DECON_F_BASE		0x19050000
+#define HW_SW_TRIG_CONTROL	0x70
+
+void init_board_funcs(void *board)
+{
+	/*
+	 * Parsing the struct directly without restructing is
+	 * broken as of Sep 29 2024
+	 */
+	struct {
+		const char *name;
+		int ops[BOARD_OP_EXIT];
+	} *board_restruct = board;
+
+	board_restruct->name = "R8S";
+}
+
+// Early initialization
+int board_init(void)
+{
+	/* Allow framebuffer to be written to */
+	*(int*) (DECON_F_BASE + HW_SW_TRIG_CONTROL) = 0x1281;
+	return 0;
+}
+
+// Late initialization
+int board_late_init(void)
+{
+	return 0;
+}
+
+int board_driver_setup(void)
+{
+	struct {
+		int width;
+		int height;
+		int stride;
+		void *address;
+	} simplefb_data = {
+		.width = 1080,
+		.height = 2400,
+		.stride = 4,
+		.address = (void *)0xf1000000
+	};
+
+	REGISTER_DRIVER("simplefb", simplefb_probe, &simplefb_data);
+	return 0;
+}

configs/r8s_defconfig

@@ -0,0 +1,3 @@
+CONFIG_CROSS_COMPILE="aarch64-linux-gnu-"
+CONFIG_EXYNOS_990=y
+CONFIG_SAMSUNG_R8S=y