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

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

board/Kconfig

@@ -6,6 +6,13 @@ menu "Device Support"
 		help
 		  Say Y if you want to include support for iPhone 6
 
+        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
+
 	config SAMSUNG_C1S
 		bool "Support for Samsung Galaxy Note20"
 		default n
@@ -86,6 +93,7 @@ menu "Device Specific Addresses"
 	config PAYLOAD_ENTRY
 		hex "Payload Entry Address"
 		default 0x830000000 if APPLE_N61AP
+		default 0x090000000 if SAMSUNG_R8S
 		default 0x090000000 if SAMSUNG_C1S
 		default 0x050000000 if SAMSUNG_NOBLELTE
 		default 0x090000000 if SAMSUNG_JACKPOTLTE
@@ -100,6 +108,7 @@ menu "Device Specific Addresses"
 	config RAMDISK_ENTRY
 		hex "Ramdisk Entry Address"
 		default 0x082000000 if SAMSUNG_DREAMLTE
+		default 0x084000000 if SAMSUNG_R8S
 		default 0x084000000 if SAMSUNG_C1S
 		default 0x084000000 if SAMSUNG_X1S
 
@@ -107,6 +116,7 @@ menu "Device Specific Addresses"
 		hex "Framebuffer Base Address (for SimpleFB)"
 		depends on SIMPLE_FB
 		default 0x83e900000 if APPLE_N61AP
+		default 0x0f1000000 if SAMSUNG_R8S
 		default 0x0f1000000 if SAMSUNG_C1S
 		default 0x0e2a00000 if SAMSUNG_NOBLELTE
 		default 0x0ec000000 if SAMSUNG_JACKPOTLTE
@@ -122,6 +132,7 @@ menu "Device Specific Addresses"
 		int "Framebuffer Width (for SimpleFB)"
 		depends on SIMPLE_FB
 		default 752 if APPLE_N61AP
+		default 1080 if SAMSUNG_R8S
 		default 1080 if SAMSUNG_C1S		
 		default 1440 if SAMSUNG_NOBLELTE
 		default 1080 if SAMSUNG_JACKPOTLTE
@@ -137,6 +148,7 @@ menu "Device Specific Addresses"
 		int "Framebuffer Height (for SimpleFB)"
 		depends on SIMPLE_FB
 		default 1334 if APPLE_N61AP
+		default 2400 if SAMSUNG_R8S
 		default 2400 if SAMSUNG_C1S
 		default 2560 if SAMSUNG_NOBLELTE
 		default 2220 if SAMSUNG_JACKPOTLTE
@@ -152,6 +164,7 @@ menu "Device Specific Addresses"
 		int "Framebuffer Stride (for SimpleFB)"
 		depends on SIMPLE_FB
 		default 4 if APPLE_N61AP
+		default 4 if SAMSUNG_R8S
 		default 4 if SAMSUNG_C1S
 		default 4 if SAMSUNG_NOBLELTE
 		default 4 if SAMSUNG_JACKPOTLTE

board/Makefile

@@ -1,4 +1,5 @@
 lib-$(CONFIG_APPLE_N61AP) += apple/board-n61ap.o
+lib-$(CONFIG_SAMSUNG_R8S) += samsung/board-r8s.o
 lib-$(CONFIG_SAMSUNG_C1S) += samsung/board-c1s.o
 lib-$(CONFIG_SAMSUNG_NOBLELTE) += samsung/board-noblelte.o
 lib-$(CONFIG_SAMSUNG_JACKPOTLTE) += samsung/board-jackpotlte.o

board/samsung/board-r8s.c

@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) BotchedRPR <thenxguy0@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