Add Framebuffer stuff

This commit is contained in:
apio 2022-11-13 11:25:15 +01:00
parent 82c2381ac9
commit ffbe5260a5
5 changed files with 271 additions and 0 deletions

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@ -1,6 +1,7 @@
set(SOURCES
src/main.cpp
src/string.cpp
src/Framebuffer.cpp
src/arch/Serial.cpp
)
@ -27,6 +28,8 @@ add_link_options(-lgcc -Wl,--build-id=none -z max-page-size=0x1000 -mno-red-zone
add_executable(moon ${SOURCES})
set_target_properties(moon PROPERTIES CXX_STANDARD 20)
target_include_directories(moon PUBLIC ${LUNA_ROOT}/luna)
target_include_directories(moon PRIVATE ${CMAKE_CURRENT_LIST_DIR}/src)

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@ -0,0 +1,83 @@
#include "Framebuffer.h"
#include "bootboot.h"
static u8* g_fb_ptr = nullptr;
static u32 g_fb_size;
static u32 g_fb_width;
static u32 g_fb_height;
static u32 g_fb_scanline;
extern BOOTBOOT bootboot;
extern u8 fb[1];
namespace Framebuffer
{
void init()
{
update(fb, bootboot.fb_size, bootboot.fb_width, bootboot.fb_height, bootboot.fb_scanline);
}
void update(u8* ptr, u32 size, u32 width, u32 height, u32 scanline)
{
g_fb_ptr = ptr;
g_fb_size = size;
g_fb_width = width;
g_fb_height = height;
g_fb_scanline = scanline;
}
void pixel(u32 x, u32 y, u32 color)
{
if (!g_fb_ptr) [[unlikely]]
return;
*(u32*)(g_fb_ptr + g_fb_scanline * y + x * 4) = color;
}
void rect(u32 x, u32 y, u32 w, u32 h, u32 color)
{
if (!g_fb_ptr) [[unlikely]]
return;
for (u32 i = y; i < (y + h); i++)
{
u32* addr = (u32*)(g_fb_ptr + (g_fb_scanline * i) + (x * sizeof(u32)));
for (u32* it = addr; it < (addr + w); it++) *it = color;
}
}
void rect(u32 x, u32 y, u32 w, u32 h, u32* colors)
{
if (!g_fb_ptr) [[unlikely]]
return;
u32 j = 0;
for (u32 i = y; i < (y + h); i++)
{
u32* addr = (u32*)(g_fb_ptr + (g_fb_scanline * i) + (x * sizeof(u32)));
for (u32* it = addr; it < (addr + w); it++, j++) *it = colors[j];
}
}
u8* ptr()
{
return g_fb_ptr;
}
u32 size()
{
return g_fb_size;
}
u32 width()
{
return g_fb_width;
}
u32 height()
{
return g_fb_height;
}
u32 scanline()
{
return g_fb_scanline;
}
}

18
kernel/src/Framebuffer.h Normal file
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@ -0,0 +1,18 @@
#pragma once
#include <Types.h>
namespace Framebuffer
{
void init();
void update(u8* ptr, u32 size, u32 width, u32 height, u32 scanline);
void pixel(u32 x, u32 y, u32 color);
void rect(u32 x, u32 y, u32 w, u32 h, u32 color);
void rect(u32 x, u32 y, u32 w, u32 h, u32* colors);
u8* ptr();
u32 size();
u32 width();
u32 height();
u32 scanline();
}

162
kernel/src/bootboot.h Normal file
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@ -0,0 +1,162 @@
/*
* bootboot.h
* https://gitlab.com/bztsrc/bootboot
*
* Copyright (C) 2017 - 2021 bzt (bztsrc@gitlab)
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* This file is part of the BOOTBOOT Protocol package.
* @brief The BOOTBOOT structure
*
*/
#ifndef _BOOTBOOT_H_
#define _BOOTBOOT_H_
#include <stdint.h>
#ifdef __cplusplus
extern "C"
{
#endif
#ifndef _MSC_VER
#define _pack __attribute__((packed))
#else
#define _pack
#pragma pack(push)
#pragma pack(1)
#endif
#define BOOTBOOT_MAGIC "BOOT"
/* default virtual addresses for level 0 and 1 static loaders */
#define BOOTBOOT_MMIO 0xfffffffff8000000 /* memory mapped IO virtual address */
#define BOOTBOOT_FB 0xfffffffffc000000 /* frame buffer virtual address */
#define BOOTBOOT_INFO 0xffffffffffe00000 /* bootboot struct virtual address */
#define BOOTBOOT_ENV 0xffffffffffe01000 /* environment string virtual address */
#define BOOTBOOT_CORE 0xffffffffffe02000 /* core loadable segment start */
/* minimum protocol level:
* hardcoded kernel name, static kernel memory addresses */
#define PROTOCOL_MINIMAL 0
/* static protocol level:
* kernel name parsed from environment, static kernel memory addresses */
#define PROTOCOL_STATIC 1
/* dynamic protocol level:
* kernel name parsed, kernel memory addresses from ELF or PE symbols */
#define PROTOCOL_DYNAMIC 2
/* big-endian flag */
#define PROTOCOL_BIGENDIAN 0x80
/* loader types, just informational */
#define LOADER_BIOS (0 << 2)
#define LOADER_UEFI (1 << 2)
#define LOADER_RPI (2 << 2)
#define LOADER_COREBOOT (3 << 2)
/* framebuffer pixel format, only 32 bits supported */
#define FB_ARGB 0
#define FB_RGBA 1
#define FB_ABGR 2
#define FB_BGRA 3
/* mmap entry, type is stored in least significant tetrad (half byte) of size
* this means size described in 16 byte units (not a problem, most modern
* firmware report memory in pages, 4096 byte units anyway). */
typedef struct
{
uint64_t ptr;
uint64_t size;
} _pack MMapEnt;
#define MMapEnt_Ptr(a) ((a)->ptr)
#define MMapEnt_Size(a) ((a)->size & 0xFFFFFFFFFFFFFFF0)
#define MMapEnt_Type(a) ((a)->size & 0xF)
#define MMapEnt_IsFree(a) (((a)->size & 0xF) == 1)
#define MMAP_USED 0 /* don't use. Reserved or unknown regions */
#define MMAP_FREE 1 /* usable memory */
#define MMAP_ACPI 2 /* acpi memory, volatile and non-volatile as well */
#define MMAP_MMIO 3 /* memory mapped IO region */
#define INITRD_MAXSIZE 16 /* Mb */
typedef struct
{
/* first 64 bytes is platform independent */
uint8_t magic[4]; /* 'BOOT' magic */
uint32_t size; /* length of bootboot structure, minimum 128 */
uint8_t protocol; /* 1, static addresses, see PROTOCOL_* and LOADER_* above */
uint8_t fb_type; /* framebuffer type, see FB_* above */
uint16_t numcores; /* number of processor cores */
uint16_t bspid; /* Bootsrap processor ID (Local APIC Id on x86_64) */
int16_t timezone; /* in minutes -1440..1440 */
uint8_t datetime[8]; /* in BCD yyyymmddhhiiss UTC (independent to timezone) */
uint64_t initrd_ptr; /* ramdisk image position and size */
uint64_t initrd_size;
uint64_t fb_ptr; /* framebuffer pointer and dimensions */
uint32_t fb_size;
uint32_t fb_width;
uint32_t fb_height;
uint32_t fb_scanline;
/* the rest (64 bytes) is platform specific */
union {
struct
{
uint64_t acpi_ptr;
uint64_t smbi_ptr;
uint64_t efi_ptr;
uint64_t mp_ptr;
uint64_t unused0;
uint64_t unused1;
uint64_t unused2;
uint64_t unused3;
} x86_64;
struct
{
uint64_t acpi_ptr;
uint64_t mmio_ptr;
uint64_t efi_ptr;
uint64_t unused0;
uint64_t unused1;
uint64_t unused2;
uint64_t unused3;
uint64_t unused4;
} aarch64;
} arch;
/* from 128th byte, MMapEnt[], more records may follow */
MMapEnt mmap;
/* use like this:
* MMapEnt *mmap_ent = &bootboot.mmap; mmap_ent++;
* until you reach bootboot->size, while(mmap_ent < bootboot + bootboot->size) */
} _pack BOOTBOOT;
#ifdef _MSC_VER
#pragma pack(pop)
#endif
#ifdef __cplusplus
}
#endif
#endif

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@ -1,9 +1,14 @@
#include "Framebuffer.h"
#include "arch/Serial.h"
extern "C" void _start()
{
Serial::println("Hello, world!");
Framebuffer::init();
Framebuffer::rect(0, 0, 200, 200, 0xFF00FF00);
for (;;)
;
}