RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-27 14:27:35 +00:00
Code Issues Activity Actions

Kernel: Add an SD card driver for the aarch64 port

Browse source 
Co-authored-by: Ollrogge <nils-ollrogge@outlook.de>
This commit is contained in:
Marco Cutecchia 2023-03-16 10:54:29 +01:00 • committed by Linus Groh
parent bb8092d6a1
commit c91db6ec97
13 changed files with 1465 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

39
Kernel/Arch/aarch64/RPi/SDHostController.cpp Normal file
View file

@ -0,0 +1,39 @@
/*
* Copyright (c) 2023, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Singleton.h>
#include <Kernel/Arch/aarch64/RPi/GPIO.h>
#include <Kernel/Arch/aarch64/RPi/MMIO.h>
#include <Kernel/Arch/aarch64/RPi/SDHostController.h>
namespace Kernel::RPi {
Singleton<SDHostController> s_sdhc;
SDHostController& SDHostController::the()
{
return *s_sdhc;
}
SDHostController::SDHostController()
: ::SDHostController()
{
auto& gpio = GPIO::the();
gpio.set_pin_function(21, GPIO::PinFunction::Alternate3); // CD
gpio.set_pin_high_detect_enable(21, true);
gpio.set_pin_function(22, GPIO::PinFunction::Alternate3); // SD1_CLK
gpio.set_pin_function(23, GPIO::PinFunction::Alternate3); // SD1_CMD
gpio.set_pin_function(24, GPIO::PinFunction::Alternate3); // SD1_DAT0
gpio.set_pin_function(25, GPIO::PinFunction::Alternate3); // SD1_DAT1
gpio.set_pin_function(26, GPIO::PinFunction::Alternate3); // SD1_DAT2
gpio.set_pin_function(27, GPIO::PinFunction::Alternate3); // SD1_DAT3
m_registers = MMIO::the().peripheral<SD::HostControlRegisterMap>(0x30'0000);
}
}

28
Kernel/Arch/aarch64/RPi/SDHostController.h Normal file
View file

@ -0,0 +1,28 @@
/*
* Copyright (c) 2023, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <Kernel/Storage/SD/Registers.h>
#include <Kernel/Storage/SD/SDHostController.h>
namespace Kernel::RPi {
class SDHostController : public ::SDHostController {
public:
static SDHostController& the();
SDHostController();
virtual ~SDHostController() override = default;
protected:
// ^SDHostController
virtual SD::HostControlRegisterMap volatile* get_register_map_base_address() override { return m_registers; }
private:
SD::HostControlRegisterMap volatile* m_registers;
};
}