This repository has no description
Little bit of documentation and try to fix pipeline
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.gitlab-ci.yml
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.gitlab-ci.yml
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Dockerfile
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Dockerfile
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FROM ubuntu:22.04 AS base
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ARG BUILD_TYPE=Release
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ARG BUILD_DIR=build
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RUN apt-get update && apt-get install -y \
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gdb-multiarch \
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wget \
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make cmake ninja-build bzip2 mc file
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RUN mkdir /usr/opt/
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RUN wget --directory-prefix=/usr/opt/ https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-2021.07/binrel/gcc-arm-10.3-2021.07-aarch64-aarch64-none-elf.tar.xz
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RUN mkdir -p /usr/opt/aarch64-none-elf
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RUN ln -s /usr/opt/gcc-arm-none-eabi/bin/arm-none-eabi-ld /usr/bin/arm-none-eabi-ld
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RUN ln -s /usr/opt/gcc-arm-none-eabi/bin/arm-none-eabi-objcopy /usr/bin/arm-none-eabi-objcopy
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ENV CC="/usr/bin/aarch64-none-elf-gcc"
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ENV CXX="/usr/bin/aarch64-none-elf-gcc"
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WORKDIR /home/piOS
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COPY . .
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# COPY . .
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FROM base AS build
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# FROM base AS build
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RUN rm -rf ./${BUILD_DIR}
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RUN cmake -G Ninja -B ./${BUILD_DIR} -S . --debug-output
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RUN cmake --build ./${BUILD_DIR}
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# RUN rm -rf ./${BUILD_DIR}
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# RUN cmake -G Ninja -B ./${BUILD_DIR} -S . --debug-output
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# RUN cmake --build ./${BUILD_DIR}
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FROM scratch AS export-stage
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COPY --from=build ./home/piOS/build/bin .
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# FROM scratch AS export-stage
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# COPY --from=build ./home/piOS/build/bin .
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os/include/kernel/atag.h
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os/include/kernel/atag.h
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// All implementation details have been taken from here
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// http://www.simtec.co.uk/products/SWLINUX/files/booting_article.html#appendix_tag_reference
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/**
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* @file atag.h
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* @brief ATAG parsing
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*/
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#include <stdint.h>
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#ifndef ATAG_H
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#define ATAG_H
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/**
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* @brief Prints the ATAGs
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*/
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void print_atags(uint32_t address);
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#define ATAG_NONE 0
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#define ATAG_VIDEOLFB 0x54410008
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#define ATAG_CMDLINE 0x54410009
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/**
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* @brief ATAG header structure
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*/
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typedef struct atag_header
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{
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uint32_t size; /**< Size in words of this tag */
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uint32_t tag_type; /**< Tag value */
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} atag_header;
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/* ATAG_NONE ends the list of ATAGs */
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/**
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* @brief ATAG_NONE structure
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*
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* This is the end of the list of ATAGs.
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*/
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typedef struct atag_none
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{
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/* No further data in this ATAG */
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} atag_none;
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/* ATAG_CORE begins the list of ATAGs */
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/**
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* @brief ATAG_CORE structure
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*
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* This is the first ATAG in the list. It is required. It contains the flags
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* and page size.
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*/
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typedef struct atag_core
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{
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/* Optional entries below */
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uint32_t rootdevice; /**< Root device number */
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} atag_core;
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/* ATAG_MEM defines a physical memory region */
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/**
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* @brief ATAG_MEM structure
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*
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* This ATAG describes a physical memory region.
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*/
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typedef struct atag_mem
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{
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uint32_t size; /**< Size of region */
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/* ATAG_VIDEOTEXT defines a VGA text screen. Not relevant to a Raspberry Pi */
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/* ATAG_RAMDISK defines an initial ramdisk - floppy images only? */
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/**
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* @brief ATAG_RAMDISK structure
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*
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* This ATAG describes the location of a ramdisk.
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*/
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typedef struct atag_ramdisk
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{
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uint32_t flags; /**< Bit 0 = load, bit 1 = prompt */
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uint32_t start; /**< Start block of ram disk */
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} atag_ramdisk;
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/* ATAG_INITRD2 - define physical location of ramdisk image */
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/**
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* @brief ATAG_INITRD2 structure
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*
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* This ATAG describes the location of an initial ramdisk.
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*/
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typedef struct atag_initrd2
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{
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uint32_t address; /**< Address of ramdisk image */
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uint32_t high;
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} atag_serial;
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/* ATAG_REVISION - board revision number */
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/**
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* @brief ATAG_REVISION structure
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*
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* This ATAG describes the revision of the board.
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*/
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typedef struct atag_revision
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{
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uint32_t revision;
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} atag_revision;
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/* ATAG_VIDEOLFB - describes a framebuffer */
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/**
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* @brief ATAG_VIDEOLFB structure
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*
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* This ATAG describes the parameters for a framebuffer type display.
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*/
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typedef struct atag_videolfb
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{
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uint16_t width; /**< Width of buffer */
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unsigned char reservedpos; /**< Position of reserved bits */
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} atag_videolfb;
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/* ATAG_CMDLINE - kernel command line */
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/**
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* @brief ATAG_CMDLINE structure
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*
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* This ATAG describes the command line to be passed to the kernel.
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*/
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typedef struct atag_cmdline
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{
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char *commandline; /**< Multiple characters from here */
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} atag_cmdline;
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/**
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* @brief ATAG structure
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*
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* This is the union of all the ATAG types.
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*/
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typedef struct atag_t
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{
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atag_header header;
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};
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} atag_t;
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#define tag_next(t) ((atag_t *)((uint32_t *)(t) + (t)->header.size))
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#define tag_size(type) ((sizeof(atag_header) + sizeof(type)) >> 2)
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#define tag_next(t) \
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((atag_t *)((uint32_t *)(t) + (t)->header.size)) /**< Get next tag */
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#define tag_size(type) \
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((sizeof(atag_header) + sizeof(type)) >> 2) /**< Get size of tag */
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/**
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* @brief Get the memory size from the ATAGs
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*/
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uint32_t get_mem_size(atag_t *atags);
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#endif
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os/include/peripherals/mailbox.h
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os/include/peripherals/mailbox.h
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#include "base.h"
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#ifndef P_MBOX_H
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#define P_MBOX_H
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/**
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* \ingroup peripherals
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* The offsets for Mailbox registers (For raspi 3,4).
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*/
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enum
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{
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MBOX_BASE
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= (MMIO_BASE + 0xB880), /**< The base address for Mailbox registers */
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MBOX_READ = (MBOX_BASE + 0x00), /**< Reads messages from the GPU */
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MBOX_STATUS
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= (MBOX_BASE + 0x18), /**< Status for READ and WRITE registers */
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MBOX_WRITE = (MBOX_BASE + 0x20) /**< Writes messages to the GPU */
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};
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#endif