board: add support for Huawei Mediapad T5

Adds the initial support for Huawei Mediapad T5 (agassi2) and Hi6250-based devices.

README.md

@@ -23,6 +23,9 @@ environment in case of a forced and buggy bootloader.
 ### Google
 - Taimen
 
+### Huawei
+- Agassi2
+
 ### itel
 - P682LPN
 

board/Kconfig

@@ -21,6 +21,13 @@ menu "Device Support"
 		help
 		  Say Y if you want to include support for Pixel 2 XL
 
+	config HUAWEI_AGASSI2
+		bool "Support for Huawei Mediapad T5"
+		default n
+		depends on HI6250
+		help
+		  Say Y if you want to include support for Huawei Mediapad T5
+
 	config INFINIX_X6710
 		bool "Support for Infinix Note 30 VIP"
 		default n

board/Makefile

@@ -1,6 +1,7 @@
 lib-$(CONFIG_AMAZON_PW3) += amazon/board-pw3.o
 lib-$(CONFIG_APPLE_N61AP) += apple/board-n61ap.o
 lib-$(CONFIG_GOOGLE_TAIMEN) += google/board-taimen.o
+lib-$(CONFIG_HUAWEI_AGASSI2) += huawei/board-agassi2.o
 lib-$(CONFIG_INFINIX_X6710) += infinix/board-x6710.o
 lib-$(CONFIG_ITEL_P682LPN) += itel/board-p682lpn.o
 lib-$(CONFIG_NOKIA_ESSENTIAL) += nokia/board-essential.o

board/huawei/board-agassi2.c

@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Board driver for Huawei Mediapad T5
+ *
+ * Copyright (c) 2026, Tildeguy <tildeguy@mainlining.org>
+ */
+
+#include <board.h>
+#include <drivers/framework.h>
+#include <lib/simplefb.h>
+
+#ifdef CONFIG_SIMPLE_FB
+static struct video_info agassi2_fb = {
+	.format = FB_FORMAT_ARGB8888,
+	.width = 1200,
+	.height = 1920,
+	.stride = 4,
+	.address = (void *)0x5d000000,
+	.scale = 2
+};
+#endif
+
+int agassi2_early_init(void)
+{
+	unsigned long cpacr;
+	__asm__ volatile ("mrs %0, cpacr_el1" : "=r" (cpacr));
+	cpacr |= (3UL << 20);
+	__asm__ volatile ("msr cpacr_el1, %0" :: "r" (cpacr));
+	return 0;
+}
+
+int agassi2_drv(void)
+{
+#ifdef CONFIG_SIMPLE_FB
+	REGISTER_DRIVER("simplefb", simplefb_probe, &agassi2_fb);
+#endif
+	return 0;
+}
+
+struct board_data board_ops = {
+	.name = "huawei-agassi2",
+	.ops = {
+		.early_init = agassi2_early_init,
+		.drivers_init = agassi2_drv
+	},
+	.quirks = 0
+};

configs/agassi2_defconfig

@@ -0,0 +1,8 @@
+CONFIG_COMPRESS_GZIP=y
+CONFIG_SIMPLE_FB=y
+CONFIG_HI6250=y
+CONFIG_HUAWEI_AGASSI2=y
+CONFIG_TEXT_BASE=0x00480000
+CONFIG_PAYLOAD_ENTRY=0x0e200000
+CONFIG_RAMDISK_ENTRY=0x08000000
+CONFIG_RAMDISK_NO_COPY=y

soc/Kconfig

@@ -10,6 +10,10 @@ config FREESCALE
 	bool
 	default n
 
+config HISILICON
+	bool
+	default n
+
 config MEDIATEK
 	bool
 	default n
@@ -115,6 +119,12 @@ config QUALCOMM
 		help
 		  Say Y if your device uses Samsung Exynos990 SoC
 
+	config HI6250
+		bool "Support for HiSilicon Hi6250"
+		select HISILICON
+		help
+		  Say Y if your device uses HiSilicon Hi6250
+
 	config MT6735
 		bool "Support for Mediatek MT6735"
 		select MEDIATEK