stixzoor/toshiba-satellite-s50b-macos-opencore

[WIP] Toshiba Satellite S50B-N-15 macOS - OpenCore

This repository contains scripts and ACPI patches for Toshiba Satellite S50B-N-15 (maybe and some others in the same series) to get macOS installed and running.

Supported Models

Toshiba Satellite S50B-N-15

Hardware

Type	Name
CPU	Intel i5-5200U 2.20GHz/3MB
RAM	Samsung DDR3 1600MHz 16GB (2 x 8GB)
GPU	Intel HD Graphics 5500 / ATI R7 M265 (Disabled)
SSD	Samsung 860 EVO 500GB
Sound card	Conexant CX20756
Wireless card	DW1560

Prerequisites

BIOS/UEFI settings

Change the following settings before you boot into the macOS installer:

• Exit → System Defaults [F9]: Yes
• Security → Secure Boot: Disabled
• Power Managements → Wake Up LAN: Disabled
• Power Managements → Wake On Keyboard: Disabled
• Power Managements → Critical Battery Wake Up: Enabled
• Power Managements → Panel Open Power On: Disabled
• Power Managements → Power On By AC: Disabled
• Power Managements → Dynamic CPU Frequency Mode: Dynamic Switch
• Power Managements → Intel Turbo Boost: Enabled
• Power Managements → SATA Interface Technology: Performance
• Advanced → USB Power in Sleep Mode: Disabled
• Advanced \ System Configuration → Boot Mode: UEFI Boot

Patching BIOS

Since macOS Yosemite, Apple raised the minimum stolen memory in the AppleIntelBDWGraphicsFramebuffer binary. Kernel panic will happen if the DVMT pre-allocated memory in BIOS settings is lower than 66MB and the default value of DVMT pre-allocated memory in most laptops BIOS is 32MB. However on laptops, the DVMT pre-allocated value can't be changed through BIOS so you have to patch it by following the steps below.

1. Prepare USB with EFI Shell

   • Download EFI shell.
   • Format it in FAT32 filesystem.
   • Copy BOOT folder to your USB stick.

2. Dump current BIOS file

   • Download Universal BIOS Backup Toolkit (Windows version only).
   • Run it as an ADMIN.
   • Press READ.
   • Wait until it has finished.
   • Press BACKUP and save it as BIOS.rom.

3. Extract SETUP Binary file

   • Download UEFITools.
   • Open the BIOS file that you saved previously.
   • Find the module labeled with SetupUtility and extract the PE32 image section in this module as a binary file.

4. Convert SETUP Binary file to plain text

   • Download Universal IFR Extractor (Windows version only).
   • Open the Universal IFR Extractor and load the binary file you just extracted from UEFITools.
   • Click EXTRACT to save the BIOS settings in plain text format.

5. Find DVMT variable and value

   • Open the extracted SetupIFR.txt and find the keyword "DVMT".
   • Mark down the DVMT variable and 96MB value. Example: variable=0x18C and value=0x3.

6. Boot into EFI Shell

   • Reboot system.
   • Plug USB.
   • Boot into EFI Shell.

7. Change DVMT value

   • Type in EFI Shell: setup_var variable value. Replace variable and value with the DVMT variable and value you found above.
   • Reboot system.

Install

To start, the developer tools must be installed, if you don't have them already. Run Terminal, and type:

git

You will be prompted to install the developer tools. Since you have internet working, you can choose to have it download and install them automatically. Do that before continuing. After the developer tools are installed, we need to make a copy of the project on github.

In Terminal:

mkdir ~/Projects
cd ~/Projects
git clone https://github.com/STiXzoOR/Toshiba-Satellite-S50B-macOS-OpenCore s50b.git
cd s50b.git

To download the kexts & tools, in Terminal:

./wizard.sh --download-requirements

To install everything, in Terminal:

./wizard.sh --install-downloads

To install the pre-configured config.plst to EFI, in Terminal:

./wizard.sh --install-config

To finish the setup, we need a correctly patched ACPI, in Terminal:

cd ~/Projects/s50b.git
make
make install

Credits

• Apple for macOS
• Acidanthera for OpenCore, Lilu, AppleALC, VoodooPS2, BrightnessKeys, WhateverGreen, VirtualSMC, CPUFriend, AirportBrcmFixup, BrcmPatchRAM, MaciASL and IOJones
• Mieze for RealtekRTL8111
• Sniki for CodecCommander
• The BraveKnight for the his tools
• Dortania for the OpenCore install guide, Pre-built kexts

LICENSE

• This project is licensed under the MIT License - see the LICENSE file for details.