testing/device-samsung-j4lte: New device (MR 5936)

Successfully built and booted postmarketOS on Samsung Galaxy J4.
It's based on Exynos 7570, same SoC used by samsung-xcover4lte [1].

Currently, these are tested working:

  - Boots from internal storage
  - Display (console framebuffer is NOT working, kernel panics)
  - Framebuffer (additionally with msm-fb-refresher to refresh the screen)
  - Touchscreen
  - USB Networking (RNDIS)
  - Wi-Fi

Tested UI environments:

  - XFCE 4
  - Console (Kernel log doesn't show up because
    `CONFIG_FRAMEBUFFER_CONSOLE` is not enabled, but enabling it panics
    the kernel. This is a known issue for some Samsung devices, notably
samsung-crownlte [2].)

[1] https://wiki.postmarketos.org/wiki/Samsung_Galaxy_Xcover_4_(samsung-xcover4lte)

[2] https://wiki.postmarketos.org/wiki/Samsung_Galaxy_Note_9_(Exynos)_(samsung-crownlte)#Current_status

CODEOWNERS

@@ -48,6 +48,7 @@ device/*/*-samsung-grandmax/			@wonderfulShrineMaidenOfParadise
 device/*/*-samsung-gt510/			@TravMurav
 device/*/*-samsung-gt58/			@TravMurav
 device/*/*-samsung-j3ltetw/		@bolilingmeng89006
+device/*/*-samsung-j4lte/			@manoedinata
 device/*/*-samsung-j5/				@wonderfulShrineMaidenOfParadise
 device/*/*-samsung-j5x/				@wonderfulShrineMaidenOfParadise
 device/*/*-samsung-rossa/			@wonderfulShrineMaidenOfParadise

device/testing/device-samsung-j4lte/APKBUILD

@@ -0,0 +1,40 @@
+# Maintainer: Hendra Manudinata <hendra@manoedinata.com>
+# Reference: <https://postmarketos.org/devicepkg>
+pkgname=device-samsung-j4lte
+pkgdesc="Samsung Galaxy J4"
+pkgver=1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="aarch64"
+options="!check !archcheck"
+depends="
+	linux-samsung-j4lte
+	mkbootimg
+	postmarketos-base
+	postmarketos-base-downstream
+	msm-fb-refresher
+"
+makedepends="devicepkg-dev"
+source="
+	deviceinfo
+"
+subpackages="$pkgname-nonfree-firmware:nonfree_firmware"
+
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+}
+
+nonfree_firmware() {
+	pkgdesc="Non-free firmware for Samsung Galaxy J4 (j4lte)"
+	depends="firmware-samsung-j4lte"
+	mkdir "$subpkgdir"
+}
+
+sha512sums="
+67c130d3a70b5905d50586dd341a999cff954a80eea6e0517907a463e9711aca24cf5a1265fd8ecfacfc62010866aa0cb6d648c1f663b6c87e791072d3c00f34  deviceinfo
+"

device/testing/device-samsung-j4lte/deviceinfo

@@ -0,0 +1,30 @@
+# Reference: <https://postmarketos.org/deviceinfo>
+# Please use double quotes only. You can source this file in shell
+# scripts.
+
+deviceinfo_format_version="0"
+deviceinfo_name="Samsung Galaxy J4"
+deviceinfo_manufacturer="Samsung"
+deviceinfo_codename="samsung-j4lte"
+deviceinfo_year="2018"
+deviceinfo_arch="aarch64"
+
+# Device related
+deviceinfo_chassis="handset"
+deviceinfo_external_storage="true"
+
+# Bootloader related
+deviceinfo_flash_method="heimdall-bootimg"
+deviceinfo_kernel_cmdline="androidboot.selinux=permissive androidboot.selinux=permissive"
+deviceinfo_generate_bootimg="true"
+deviceinfo_bootimg_qcdt="true"
+deviceinfo_flash_pagesize="2048"
+deviceinfo_flash_offset_base="0x10000000"
+deviceinfo_flash_offset_kernel="0x00008000"
+deviceinfo_flash_offset_ramdisk="0x01000000"
+deviceinfo_flash_offset_second="0x00f00000"
+deviceinfo_flash_offset_tags="0x00000100"
+deviceinfo_flash_sparse="true"
+deviceinfo_flash_sparse_samsung_format="1"
+deviceinfo_flash_heimdall_partition_kernel="BOOT"
+deviceinfo_flash_heimdall_partition_rootfs="SYSTEM"

device/testing/firmware-samsung-j4lte/APKBUILD

@@ -0,0 +1,37 @@
+# Maintainer: Hendra Manudinata <hendra@manoedinata.com>
+pkgname=firmware-samsung-j4lte
+pkgver=1
+pkgrel=0
+pkgdesc="Proprietary firmware for Samsung Galaxy J4 (j4lte)"
+url="https://github.com/manoe-firmware/samsung_j4lte_dump"
+arch="aarch64"
+license="proprietary"
+options="!check !archcheck !tracedeps pmb:cross-native"
+
+_commit="019a045093a481c8cea9503fbd91247924d7cdbe"
+_repo="$url/raw/$_commit"
+
+_files_wifi="
+mx
+mx140.bin
+mx140_wlan.hcf
+"
+
+for _file in $_files_wifi; do
+	source="$source $pkgname-$_commit-$_file::$_repo/vendor/etc/wifi/$_file"
+done
+
+package() {
+	j4lte_dir="$pkgdir/lib/firmware/postmarketos/samsung-j4lte"
+	local file
+	for file in $_files_wifi; do
+		install -Dm644 "$srcdir/$pkgname-$_commit-$file" \
+			"$j4lte_dir/mx140/$file"
+	done
+}
+
+sha512sums="
+cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e  firmware-samsung-j4lte-019a045093a481c8cea9503fbd91247924d7cdbe-mx
+23cae12e6350ec4f785891726e35e1546eebe5f049501b4a803af32e015ef0a3cf9284fe246409ad83789d4cde1acfce642ca52c96f599b4c04dde9732aeb13b  firmware-samsung-j4lte-019a045093a481c8cea9503fbd91247924d7cdbe-mx140.bin
+2f325056446b09e063d1d22c6db5201b17638589993ef2f5f763ddef54947761049eeb1ea64b9e4450283e3d5e3550eb40ac604ce1158a3da9af86f28a48583d  firmware-samsung-j4lte-019a045093a481c8cea9503fbd91247924d7cdbe-mx140_wlan.hcf
+"

device/testing/linux-samsung-j4lte/0001-drivers-leds-ktd2692-Guard-function-calls-under-CONF.patch

@@ -0,0 +1,93 @@
+From 3af049e080fad9ea2cae686b92e2888ca4d27cc9 Mon Sep 17 00:00:00 2001
+From: Hendra Manudinata <manoedinata@gmail.com>
+Date: Tue, 7 May 2024 21:54:04 +0700
+Subject: [PATCH 1/6] drivers: leds: ktd2692: Guard function calls under
+ `CONFIG_VIDEO_EXYNOS_FIMC_IS2`
+
+Fixes compilation issues when `CONFIG_VIDEO_EXYNOS_FIMC_IS2` is disabled.
+
+Signed-off-by: Hendra Manudinata <manoedinata@gmail.com>
+---
+ drivers/leds/leds-ktd2692.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/drivers/leds/leds-ktd2692.c b/drivers/leds/leds-ktd2692.c
+index 4c2038a8..b75e0910 100755
+--- a/drivers/leds/leds-ktd2692.c
++++ b/drivers/leds/leds-ktd2692.c
+@@ -24,7 +24,9 @@
+ 
+ //#define DEBUG_LED_TIME
+ 
++#ifdef CONFIG_VIDEO_EXYNOS_FIMC_IS2
+ extern struct class *camera_class; /*sys/class/camera*/
++#endif
+ struct device *ktd2692_dev;
+ 
+ struct ktd2692_platform_data *global_ktd2692data = NULL;
+@@ -176,6 +178,7 @@ static int ktd2692_write_data(unsigned data)
+ 	return err;
+ }
+ 
++#ifdef CONFIG_VIDEO_EXYNOS_FIMC_IS2
+ #ifdef CONFIG_LEDS_SUPPORT_FRONT_FLASH
+ int ktd2692_led_set_front_flash_brightness(int brightness)	/*For control brightness of front flash led*/
+ {
+@@ -281,6 +284,7 @@ int ktd2692_led_mode_ctrl(int mode)
+ 	return ret;
+ }
+ #endif
++#endif /* CONFIG_VIDEO_EXYNOS_FIMC_IS2 */
+ 
+ ssize_t ktd2692_store(struct device *dev,
+ 			struct device_attribute *attr, const char *buf,
+@@ -360,6 +364,7 @@ ssize_t ktd2692_show(struct device *dev,
+ {
+ 	return sprintf(buf, "%d\n", global_ktd2692data->sysfs_input_data);
+ }
++#ifdef CONFIG_VIDEO_EXYNOS_FIMC_IS2
+ #ifdef CONFIG_LEDS_SUPPORT_FRONT_FLASH
+ static DEVICE_ATTR(front_flash, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH,
+ 	ktd2692_show, ktd2692_store);
+@@ -369,6 +374,7 @@ static DEVICE_ATTR(front_torch_flash, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH,
+ static DEVICE_ATTR(rear_flash, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH,
+ 	ktd2692_show, ktd2692_store);
+ #endif
++#endif /* CONFIG_VIDEO_EXYNOS_FIMC_IS2 */
+ 
+ static int ktd2692_parse_dt(struct device *dev,
+                                 struct ktd2692_platform_data *pdata)
+@@ -423,6 +429,7 @@ static int ktd2692_probe(struct platform_device *pdev)
+ 
+ 	LED_INFO("KTD2692_LED Probed\n");
+ 
++#ifdef CONFIG_VIDEO_EXYNOS_FIMC_IS2
+ #ifdef CONFIG_LEDS_SUPPORT_FRONT_FLASH
+ 	if( led_dev == NULL) {
+ 		led_dev = device_create(camera_class, NULL, 3, NULL, "flash");
+@@ -452,12 +459,14 @@ static int ktd2692_probe(struct platform_device *pdev)
+ 				dev_attr_rear_flash.attr.name);
+ 	}
+ #endif
++#endif /* CONFIG_VIDEO_EXYNOS_FIMC_IS2 */
+ 	spin_lock_init(&pdata->int_lock);
+ 
+ 	return 0;
+ }
+ static int __devexit ktd2692_remove(struct platform_device *pdev)
+ {
++#ifdef CONFIG_VIDEO_EXYNOS_FIMC_IS2
+ #ifdef CONFIG_LEDS_SUPPORT_FRONT_FLASH
+ 	device_remove_file(led_dev, &dev_attr_front_flash);
+ 	device_remove_file(led_dev, &dev_attr_front_torch_flash);
+@@ -466,6 +475,7 @@ static int __devexit ktd2692_remove(struct platform_device *pdev)
+ 	device_destroy(camera_class, 0);
+ 	class_destroy(camera_class);
+ #endif
++#endif /* CONFIG_VIDEO_EXYNOS_FIMC_IS2 */
+ 
+ 	return 0;
+ }
+-- 
+2.34.1
+

device/testing/linux-samsung-j4lte/0002-drivers-samsung-scsc-Skip-mount-point-check.patch

@@ -0,0 +1,37 @@
+From 458b76be4e001e9c50104b113e56654ed3575cc7 Mon Sep 17 00:00:00 2001
+From: Hendra Manudinata <manoedinata@gmail.com>
+Date: Tue, 7 May 2024 21:01:13 +0700
+Subject: [PATCH 2/6] drivers: samsung: scsc: Skip mount point check
+
+We definitely won't be able to do this check on postmarketOS, so let's
+say that the path will be always exist.
+
+Signed-off-by: Hendra Manudinata <manoedinata@gmail.com>
+---
+ drivers/misc/samsung/scsc/mx140_file.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/drivers/misc/samsung/scsc/mx140_file.c b/drivers/misc/samsung/scsc/mx140_file.c
+index 0bc345ca..601e4bd6 100644
+--- a/drivers/misc/samsung/scsc/mx140_file.c
++++ b/drivers/misc/samsung/scsc/mx140_file.c
+@@ -488,6 +488,8 @@ int mx140_basedir_file(struct scsc_mx *mx)
+ 	/* Set to kernel segment. */
+ 	set_fs(get_ds());
+ 
++/* HACK: Skip mount point check (postmarketOS) */
++#if 0
+ 	/* If /system isn't present, assume platform isn't ready yet */
+ 	r = vfs_stat("/system", &stat);
+ 	if (r != 0) {
+@@ -507,6 +509,7 @@ int mx140_basedir_file(struct scsc_mx *mx)
+ 		r = -EAGAIN;
+ 		goto done;
+ 	}
++#endif
+ 
+ 	/* Search for SCSC FW under the mountpoints */
+ 
+-- 
+2.34.1
+

device/testing/linux-samsung-j4lte/0003-Update-file-proc.S.patch

@@ -0,0 +1,25 @@
+From 53d14f0e8b9d68050dceccbecc8219d356437c07 Mon Sep 17 00:00:00 2001
+From: Eray Tutmaz <tarkanttmz261@gmail.com>
+Date: Thu, 19 Oct 2023 08:31:12 +0000
+Subject: [PATCH 3/6] Update file proc.S
+
+---
+ arch/arm64/mm/proc.S | 2 --
+ 1 file changed, 2 deletions(-)
+
+diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S
+index 4c2d56b9..7d2915bc 100644
+--- a/arch/arm64/mm/proc.S
++++ b/arch/arm64/mm/proc.S
+@@ -140,8 +140,6 @@ ENTRY(cpu_do_switch_mm)
+ 	b	post_ttbr_update_workaround	// Back to C code...
+ ENDPROC(cpu_do_switch_mm)
+ 
+-	.section ".text.init", #alloc, #execinstr
+-
+ /*
+  *	__cpu_setup
+  *
+-- 
+2.34.1
+

device/testing/linux-samsung-j4lte/0004-drivers-usb-u_ether-Force-setting-random-MAC-address.patch

@@ -0,0 +1,36 @@
+From 85d282bcd9ae6a907c10c51354c34a2a5c4cab81 Mon Sep 17 00:00:00 2001
+From: Hendra Manudinata <manoedinata@gmail.com>
+Date: Tue, 7 May 2024 23:40:58 +0700
+Subject: [PATCH 4/6] drivers: usb: u_ether: Force setting random MAC address
+
+Signed-off-by: Hendra Manudinata <manoedinata@gmail.com>
+---
+ drivers/usb/gadget/function/u_ether.c | 6 ------
+ 1 file changed, 6 deletions(-)
+
+diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c
+index b7d94ae9..6252450c 100644
+--- a/drivers/usb/gadget/function/u_ether.c
++++ b/drivers/usb/gadget/function/u_ether.c
+@@ -1270,18 +1270,12 @@ struct eth_dev *gether_setup_name(struct usb_gadget *g, u8 ethaddr[ETH_ALEN],
+ 	if (get_ether_addr(dev_addr, net->dev_addr))
+ 		dev_warn(&g->dev,
+ 			"using random %s ethernet address\n", "self");
+-#ifdef CONFIG_USB_ANDROID_SAMSUNG_COMPOSITE
+-	memcpy(dev->host_mac, ethaddr, ETH_ALEN);
+-	printk(KERN_DEBUG "usb: set unique host mac\n");
+-	
+-#else
+ 	if (get_ether_addr(host_addr, dev->host_mac))
+ 		dev_warn(&g->dev,
+ 			"using random %s ethernet address\n", "host");
+ 
+ 	if (ethaddr)
+ 		memcpy(ethaddr, dev->host_mac, ETH_ALEN);
+-#endif
+ 	net->netdev_ops = &eth_netdev_ops;
+ 
+ 	net->ethtool_ops = &ops;
+-- 
+2.34.1
+

device/testing/linux-samsung-j4lte/0005-staging-samsung-sec_batt-Force-disable-low-power-cha.patch

@@ -0,0 +1,30 @@
+From 5c21a20cc9d4c6f19b5d4baa1ac4ec40ce26ae0f Mon Sep 17 00:00:00 2001
+From: Hendra Manudinata <manoedinata@gmail.com>
+Date: Tue, 7 May 2024 23:42:50 +0700
+Subject: [PATCH 5/6] staging: samsung: sec_batt: Force disable low power
+ charge
+
+Signed-off-by: Hendra Manudinata <manoedinata@gmail.com>
+---
+ drivers/staging/samsung/sec_batt.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/drivers/staging/samsung/sec_batt.c b/drivers/staging/samsung/sec_batt.c
+index de9f63ef..5145dcc6 100644
+--- a/drivers/staging/samsung/sec_batt.c
++++ b/drivers/staging/samsung/sec_batt.c
+@@ -20,8 +20,11 @@ EXPORT_SYMBOL(lpcharge);
+ 
+ static int sec_bat_is_lpm_check(char *str)
+ {
++/* HACK: Force disable low power charge */
++#if 0
+ 	if (strncmp(str, "charger", 7) == 0)
+ 		lpcharge = 1;
++#endif
+ 
+ 	pr_info("%s: Low power charging mode: %d\n", __func__, lpcharge);
+ 
+-- 
+2.34.1
+

device/testing/linux-samsung-j4lte/0006-HACK-decon_7570-Swap-red-blue-offset.patch

@@ -0,0 +1,35 @@
+From b902b582f39d47d0196e0540e57e172c5a6eb403 Mon Sep 17 00:00:00 2001
+From: Hendra Manudinata <manoedinata@gmail.com>
+Date: Mon, 28 Oct 2024 16:22:38 +0700
+Subject: [PATCH 6/6] HACK: decon_7570: Swap red & blue offset
+
+Based on [1], to make red & blue properly rendered.
+
+[1] https://gitlab.postmarketos.org/postmarketOS/pmaports/-/blob/master/device/testing/linux-samsung-xcover4lte/02-swap-red-blue.patch?ref_type=heads
+
+Signed-off-by: Hendra Manudinata <manoedinata@gmail.com>
+---
+ drivers/video/fbdev/exynos/decon_7570/decon-int_drv.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/video/fbdev/exynos/decon_7570/decon-int_drv.c b/drivers/video/fbdev/exynos/decon_7570/decon-int_drv.c
+index 7695b674..b3010c98 100644
+--- a/drivers/video/fbdev/exynos/decon_7570/decon-int_drv.c
++++ b/drivers/video/fbdev/exynos/decon_7570/decon-int_drv.c
+@@ -440,11 +440,11 @@ int decon_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+ 	case 24:
+ 		/* our 24bpp is unpacked, so 32bpp */
+ 		var->bits_per_pixel	= 32;
+-		var->red.offset		= 16;
++		var->red.offset		= 0;
+ 		var->red.length		= 8;
+ 		var->green.offset	= 8;
+ 		var->green.length	= 8;
+-		var->blue.offset	= 0;
++		var->blue.offset	= 16;
+ 		var->blue.length	= 8;
+ 		break;
+ 
+-- 
+2.34.1
+

device/testing/linux-samsung-j4lte/APKBUILD

@@ -0,0 +1,79 @@
+# Maintainer: Hendra Manudinata <hendra@manoedinata.com>
+# Reference: <https://postmarketos.org/vendorkernel>
+# Kernel config based on: arch/arm64/configs/exynos7570-j4lte_defconfig
+
+pkgname=linux-samsung-j4lte
+pkgver=3.18.140
+pkgrel=0
+pkgdesc="Samsung Galaxy J4 kernel fork"
+arch="aarch64"
+_carch="arm64"
+_flavor="samsung-j4lte"
+url="https://kernel.org"
+license="GPL-2.0-only"
+options="!strip !check !tracedeps pmb:cross-native"
+makedepends="
+	bash
+	bc
+	bison
+	devicepkg-dev
+	findutils
+	flex
+	openssl-dev
+	perl
+	dtbtool-exynos
+"
+
+# Source
+_repository="android_kernel_samsung_j4lte"
+_commit="3649f566a23e749962b946d54a3c73e1a9305ffc"
+_config="config-$_flavor.$arch"
+source="
+	$pkgname-$_commit.tar.gz::https://gitlab.com/manoedinata/$_repository/-/archive/$_commit.tar.gz
+	$_config
+	0001-drivers-leds-ktd2692-Guard-function-calls-under-CONF.patch
+	0002-drivers-samsung-scsc-Skip-mount-point-check.patch
+	0003-Update-file-proc.S.patch
+	0004-drivers-usb-u_ether-Force-setting-random-MAC-address.patch
+	0005-staging-samsung-sec_batt-Force-disable-low-power-cha.patch
+	0006-HACK-decon_7570-Swap-red-blue-offset.patch
+"
+builddir="$srcdir/$_repository-$_commit"
+_outdir="out"
+
+prepare() {
+	default_prepare
+	. downstreamkernel_prepare
+}
+
+build() {
+	unset LDFLAGS
+	make O="$_outdir" ARCH="$_carch" CC="${CC:-gcc}" \
+		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-postmarketOS"
+
+	# Build dt image with exynos dtbtool
+	dtbTool-exynos --pagesize 2048 \
+		--platform 0x50a6 \
+		--subtype  0x217584da \
+		-o "$_outdir/arch/$_carch/boot"/dt.img \
+		$(find "$_outdir/arch/$_carch/boot/dts/" -name *.dtb)
+}
+
+package() {
+	downstreamkernel_package "$builddir" "$pkgdir" "$_carch" \
+		"$_flavor" "$_outdir"
+
+	install -Dm644 "$_outdir/arch/$_carch/boot"/dt.img \
+		"$pkgdir"/boot/dt.img
+}
+
+sha512sums="
+fa8883e729c612fc9c563a003f0e24642f5199684932cc92f886feca76956094b8a2a96eaee30513f50b70f38f60b07c0e13668143061c43947f545122c70a5d  linux-samsung-j4lte-3649f566a23e749962b946d54a3c73e1a9305ffc.tar.gz
+a844d6505b47f6cce06b9598a88f2ae6aa40b90390eee6af6cf5b1b60ab0ac4b77f0da5395508934914a67b773c8485a81b4081f6b4d6846df7d515a018e748b  config-samsung-j4lte.aarch64
+1e42cdc37e8dffd1b557705f416d94606a61a1fe70bca259d88652f1b7f0d7ded6dc475a9a92d6bf5a1db904936d8fb8ee9a312c0f3cbf461b71472a7b459462  0001-drivers-leds-ktd2692-Guard-function-calls-under-CONF.patch
+6d0603e1fbb8d7682c518694c0781292e46be42111a4be84e4e7efaf3298f9c43dfcd40806e0a9f2701c096ef8e6ab223f6e36afc36fc53d3475266b42719a84  0002-drivers-samsung-scsc-Skip-mount-point-check.patch
+fde3e1dc2282ed62a2b0973d385c2deed4126ce82e350d4e069635c734e480d66876094a0f99506ee03d4d72626ad7c5755ac11cd2c1a0a1f519733cdb7b6fb3  0003-Update-file-proc.S.patch
+142f682492c8020222855b9e900b22ea890dff5a88283438281d6cf7dae5a53b81de75cf02c40c1fc469fa28d3ad2f7e061522375c3f03913ed27c5bd1625dcd  0004-drivers-usb-u_ether-Force-setting-random-MAC-address.patch
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