Schematics and service manual for i9250: Samsung_i9250_schem_sm.rar
127|root@maguro:/ # cat /proc/cpuinfo Processor : ARMv7 Processor rev 10 (v7l) processor : 0 BogoMIPS : 1194.24 processor : 1 BogoMIPS : 1194.24 Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x2 CPU part : 0xc09 CPU revision : 10 Hardware : Tuna Revision : 0009 Serial : 014994b30201c013
BLE
GSM modem over serial port
HID keyboard
Unlegacy Android
ASOP for OMAP4 devices:
https://forum.xda-developers.com/galaxy-nexus/development/rom-omap4-aosp-project-t3334574
https://github.com/Unlegacy-Android/
kernel
https://github.com/Unlegacy-Android/android_kernel_samsung_tuna
dpavlin@klin:/virtual/android/galaxy-nexus$ git clone https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/arm/arm-eabi-4.8/ dpavlin@klin:/virtual/android/galaxy-nexus/omap$ git checkout -b asop-7.1 unlegacy/aosp-7.1 dpavlin@klin:/virtual/android/galaxy-nexus/omap$ make tuna_defconfig ARCH=arm dpavlin@klin:/virtual/android/galaxy-nexus/omap$ cp include/linux/compiler-gcc4.h include/linux/compiler-gcc5.h dpavlin@klin:/virtual/android/galaxy-nexus/omap$ make -j9 ARCH=arm CROSS_COMPILE=arm-none-eabi-
OMAP4 USB boot
Somewhat interesting things that I can take a look at some time in the future:
- https://github.com/swetland/omap4boot
- newer(ish) version is on https://github.com/dmitry-pervushin/usbboot-omap4
To compile it needs following change:
dpavlin@nuc:/nuc/Galaxy-Nexus-i9250/usbboot-omap4$ git diff
diff --git a/Makefile b/Makefile
index 2d10c73..9ea9461 100644
--- a/Makefile
+++ b/Makefile
@@ -38,7 +38,7 @@ BINDIR ?= $(DESTDIR)/usr/bin
DATADIR ?= $(DESTDIR)/usr/share/usbboot
DOCDIR ?= $(DESTDIR)/usr/share/doc/usbboot
-BOARD ?= panda
+BOARD ?= tuna
TARGET_CC := $(TOOLCHAIN)gcc
TARGET_LD := $(TOOLCHAIN)ld
diff --git a/tools/usb-linux.c b/tools/usb-linux.c
index e3492a1..09c40de 100755
--- a/tools/usb-linux.c
+++ b/tools/usb-linux.c
@@ -10,7 +10,7 @@ int linux_usb_init(void)
r = libusb_init(&ctx);
if (r != 0)
return r;
- libusb_set_debug(ctx,0x1);
+ //libusb_set_debug(ctx,0x1);
return 0;
}
Odin
serial
| Device | Codename | Resistor (R3) | Connected VCC |
| Google Galaxy Nexus (GSM) | samsung-maguro | 619K ohm | No |
| Samsung Galaxy Mini 2 | samsung-s6500d | 530K ohm | No |
| Samsung Galaxy S4 Mini LTE | samsung-i9195 | 619K ohm | No |
| Samsung Galaxy S5 | samsung-klte | 619K ohm | No |
It seems that other suggestion is 150k from https://redmine.replicant.us/projects/replicant/wiki/SamsungSerial - I will have to test which value works
UART modes
| Resistance | Jig | Boot |
| 150k | Inactive | Inactive |
| 523k | Active | Inactive |
| 619k | Active | Active |
RID_USB_OTG_MODE, /* 0 0 0 0 0 GND USB OTG Mode */ RID_AUD_SEND_END_BTN, /* 0 0 0 0 1 2K Audio Send_End Button*/ RID_AUD_REMOTE_S1_BTN, /* 0 0 0 1 0 2.604K Audio Remote S1 Button */ RID_AUD_REMOTE_S2_BTN, /* 0 0 0 1 1 3.208K Audio Remote S2 Button */ RID_AUD_REMOTE_S3_BTN, /* 0 0 1 0 0 4.014K Audio Remote S3 Button */ RID_AUD_REMOTE_S4_BTN, /* 0 0 1 0 1 4.82K Audio Remote S4 Button */ RID_AUD_REMOTE_S5_BTN, /* 0 0 1 1 0 6.03K Audio Remote S5 Button */ RID_AUD_REMOTE_S6_BTN, /* 0 0 1 1 1 8.03K Audio Remote S6 Button */ RID_AUD_REMOTE_S7_BTN, /* 0 1 0 0 0 10.03K Audio Remote S7 Button */ RID_AUD_REMOTE_S8_BTN, /* 0 1 0 0 1 12.03K Audio Remote S8 Button */ RID_AUD_REMOTE_S9_BTN, /* 0 1 0 1 0 14.46K Audio Remote S9 Button */ RID_AUD_REMOTE_S10_BTN, /* 0 1 0 1 1 17.26K Audio Remote S10 Button */ RID_AUD_REMOTE_S11_BTN, /* 0 1 1 0 0 20.5K Audio Remote S11 Button */ RID_AUD_REMOTE_S12_BTN, /* 0 1 1 0 1 24.07K Audio Remote S12 Button */ RID_RESERVED_1, /* 0 1 1 1 0 28.7K Reserved Accessory #1 */ RID_RESERVED_2, /* 0 1 1 1 1 34K Reserved Accessory #2 */ RID_RESERVED_3, /* 1 0 0 0 0 40.2K Reserved Accessory #3 */ RID_RESERVED_4, /* 1 0 0 0 1 49.9K Reserved Accessory #4 */ RID_RESERVED_5, /* 1 0 0 1 0 64.9K Reserved Accessory #5 */ RID_AUD_DEV_TY_2, /* 1 0 0 1 1 80.07K Audio Device Type 2 */ RID_PHONE_PWD_DEV, /* 1 0 1 0 0 102K Phone Powered Device */ RID_TTY_CONVERTER, /* 1 0 1 0 1 121K TTY Converter */ RID_UART_CABLE, /* 1 0 1 1 0 150K UART Cable */ RID_CEA936A_TY_1, /* 1 0 1 1 1 200K CEA936A Type-1 Charger(1) */ RID_FM_BOOT_OFF_USB, /* 1 1 0 0 0 255K Factory Mode Boot OFF-USB */ RID_FM_BOOT_ON_USB, /* 1 1 0 0 1 301K Factory Mode Boot ON-USB */ RID_AUD_VDO_CABLE, /* 1 1 0 1 0 365K Audio/Video Cable */ RID_CEA936A_TY_2, /* 1 1 0 1 1 442K CEA936A Type-2 Charger(1) */ RID_FM_BOOT_OFF_UART, /* 1 1 1 0 0 523K Factory Mode Boot OFF-UART */ RID_FM_BOOT_ON_UART, /* 1 1 1 0 1 619K Factory Mode Boot ON-UART */ RID_AUD_DEV_TY_1_REMOTE, /* 1 1 1 1 0 1000.07K Audio Device Type 1 with Remote(1) */ RID_AUD_DEV_TY_1_SEND = RID_AUD_DEV_TY_1_REMOTE , /* 1 1 1 1 0 1002K Audio Device Type 1 / Only Send-End(2) */ RID_USB_MODE, /* 1 1 1 1 1 Open USB Mode, Dedicated Charger or Accessory Detach */
PostmarketOS
dpavlin@nuc:/nuc/pmbootstrap$ ./pmbootstrap.py install --no-fde
[17:54:17] *** (1/5) PREPARE NATIVE CHROOT ***
[17:54:18] *** (2/5) CREATE DEVICE ROOTFS ("samsung-maguro") ***
[17:54:23] (rootfs_samsung-maguro) install
[17:54:27] (rootfs_samsung-maguro) install
[17:54:30] (rootfs_samsung-maguro) write /etc/os-release
[17:54:30] (rootfs_samsung-maguro) mkinitfs samsung-maguro
[17:54:34] *** SET LOGIN PASSWORD FOR: 'dpavlin' ***
New password:
Retype new password:
passwd: password updated successfully
[17:54:43] NOTE: No valid keymap specified for device
[17:54:46] *** (3/5) PREPARE INSTALL BLOCKDEVICE ***
[17:54:47] (native) create samsung-maguro.img (361M)
[17:54:47] (native) mount /dev/install (samsung-maguro.img)
[17:54:47] (native) partition /dev/install (boot: 31M, root: the rest)
[17:54:47] (native) format /dev/installp2
[17:54:48] (native) mount /dev/installp2 to /mnt/install
[Tue Sep 25 17:55:21 2018] EXT4-fs (loop0p2): mounted filesystem with ordered data mode. Opts: (null)
[17:54:48] (native) format /dev/installp1 (boot, ext2), mount to /mnt/install/boot
[Tue Sep 25 17:55:21 2018] EXT4-fs (loop0p1): mounting ext2 file system using the ext4 subsystem
[Tue Sep 25 17:55:21 2018] EXT4-fs (loop0p1): mounted filesystem without journal. Opts: (null)
[17:54:48] *** (4/5) FILL INSTALL BLOCKDEVICE ***
[17:54:48] (native) copy rootfs_samsung-maguro to /mnt/install/
[17:54:53] *** (5/5) FLASHING TO DEVICE ***
[17:54:53] Run the following to flash your installation to the target device:
[17:54:53] * pmbootstrap flasher flash_rootfs
[17:54:53] Flashes the generated rootfs image to your device:
[17:54:53] /nuc/pmbootstrap-work/chroot_native/home/pmos/rootfs/samsung-maguro.img
[17:54:53] (NOTE: This file has a partition table, which contains /boot and / subpartitions. That way we don't need to change the partition layout on your device.)
[17:54:53] * pmbootstrap flasher flash_kernel
[17:54:53] Flashes the kernel + initramfs to your device:
[17:54:53] /nuc/pmbootstrap-work/chroot_rootfs_samsung-maguro/boot
[17:54:53] (NOTE: fastboot also supports booting the kernel/initramfs directly without flashing. Use 'pmbootstrap flasher boot' to do that.)
[17:54:53] * If the above steps do not work, you can also create symlinks to the generated files with 'pmbootstrap export' and flash outside of pmbootstrap.
[17:54:53] NOTE: chroot is still active (use 'pmbootstrap shutdown' as necessary)
[17:54:53] Done
dpavlin@nuc:/nuc/pmbootstrap$ alias pmbootstrap=/nuc/pmbootstrap/pmbootstrap.py
dpavlin@nuc:/nuc/pmbootstrap$ pmbootstrap flasher flash_rootfs
[17:57:10] (native) flash rootfs image
< waiting for any device >
[Tue Sep 25 17:59:17 2018] usb 2-3.1: new high-speed USB device number 22 using xhci_hcd
[Tue Sep 25 17:59:17 2018] usb 2-3.1: New USB device found, idVendor=18d1, idProduct=4e30, bcdDevice= 1.00
[Tue Sep 25 17:59:17 2018] usb 2-3.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[Tue Sep 25 17:59:17 2018] usb 2-3.1: Product: Android 1.0
[Tue Sep 25 17:59:17 2018] usb 2-3.1: Manufacturer: Google, Inc
[Tue Sep 25 17:59:17 2018] usb 2-3.1: SerialNumber: 014994B00C01A013
target didn't report max-download-size
Erasing 'system'...
OKAY [ 0.047s]
Sending 'system' (369664 KB)...
OKAY [ 50.498s]
Writing 'system'...
OKAY [ 26.436s]
Finished. Total time: 77.024s
[18:00:02] NOTE: chroot is still active (use 'pmbootstrap shutdown' as necessary)
[18:00:02] Done
dpavlin@nuc:/nuc/pmbootstrap$ [Tue Sep 25 19:24:27 2018] usb 2-3.1: USB disconnect, device number 22
[Tue Sep 25 19:24:27 2018] usb 2-3.1: new high-speed USB device number 23 using xhci_hcd
[Tue Sep 25 19:24:27 2018] usb 2-3.1: unable to get BOS descriptor
[Tue Sep 25 19:24:27 2018] usb 2-3.1: New USB device found, idVendor=0451, idProduct=d010, bcdDevice= 0.00
[Tue Sep 25 19:24:27 2018] usb 2-3.1: New USB device strings: Mfr=33, Product=37, SerialNumber=0
[Tue Sep 25 19:24:27 2018] usb 2-3.1: Product: OMAP4440
[Tue Sep 25 19:24:27 2018] usb 2-3.1: Manufacturer: Texas Instruments
[Tue Sep 25 19:24:30 2018] usb 2-3.1: USB disconnect, device number 23