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Kernel: Don't ignore modules passed with multiboot2

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Bananymous
2025-06-30 16:07:48 +03:00
parent c67198032f
commit 17f1ac10e3
7 changed files with 96 additions and 48 deletions
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110
kernel/kernel/BootInfo.cpp
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@@ -26,59 +26,73 @@ namespace Kernel
for (const auto* tag = multiboot2_info.tags; tag->type != MULTIBOOT2_TAG_END; tag = tag->next())
{
if (tag->type == MULTIBOOT2_TAG_CMDLINE)
switch (tag->type)
{
const auto& command_line_tag = *static_cast<const multiboot2_cmdline_tag_t*>(tag);
MUST(g_boot_info.command_line.append(command_line_tag.cmdline));
}
else if (tag->type == MULTIBOOT2_TAG_FRAMEBUFFER)
{
const auto& framebuffer_tag = *static_cast<const multiboot2_framebuffer_tag_t*>(tag);
g_boot_info.framebuffer.address = framebuffer_tag.framebuffer_addr;
g_boot_info.framebuffer.pitch = framebuffer_tag.framebuffer_pitch;
g_boot_info.framebuffer.width = framebuffer_tag.framebuffer_width;
g_boot_info.framebuffer.height = framebuffer_tag.framebuffer_height;
g_boot_info.framebuffer.bpp = framebuffer_tag.framebuffer_bpp;
if (framebuffer_tag.framebuffer_type == MULTIBOOT2_FRAMEBUFFER_TYPE_RGB)
g_boot_info.framebuffer.type = FramebufferInfo::Type::RGB;
else if (framebuffer_tag.framebuffer_type == MULTIBOOT2_FRAMEBUFFER_TYPE_TEXT)
g_boot_info.framebuffer.type = FramebufferInfo::Type::Text;
else
g_boot_info.framebuffer.type = FramebufferInfo::Type::Unknown;
}
else if (tag->type == MULTIBOOT2_TAG_MMAP)
{
const auto& mmap_tag = *static_cast<const multiboot2_mmap_tag_t*>(tag);
const size_t entry_count = (mmap_tag.size - sizeof(multiboot2_mmap_tag_t)) / mmap_tag.entry_size;
MUST(g_boot_info.memory_map_entries.resize(entry_count));
for (size_t i = 0; i < entry_count; i++)
case MULTIBOOT2_TAG_CMDLINE:
{
const auto& mmap_entry = *reinterpret_cast<const multiboot2_mmap_entry_t*>(reinterpret_cast<uintptr_t>(tag) + sizeof(multiboot2_mmap_tag_t) + i * mmap_tag.entry_size);
dprintln("entry {16H} {16H} {8H}",
(uint64_t)mmap_entry.base_addr,
(uint64_t)mmap_entry.length,
(uint64_t)mmap_entry.type
);
g_boot_info.memory_map_entries[i].address = mmap_entry.base_addr;
g_boot_info.memory_map_entries[i].length = mmap_entry.length;
g_boot_info.memory_map_entries[i].type = bios_number_to_memory_type(mmap_entry.type);
const auto& command_line_tag = *static_cast<const multiboot2_cmdline_tag_t*>(tag);
MUST(g_boot_info.command_line.append(command_line_tag.cmdline));
break;
}
}
else if (tag->type == MULTIBOOT2_TAG_OLD_RSDP)
{
if (g_boot_info.rsdp.length == 0)
case MULTIBOOT2_TAG_MODULES:
{
memcpy(&g_boot_info.rsdp, static_cast<const multiboot2_rsdp_tag_t*>(tag)->data, 20);
g_boot_info.rsdp.length = 20;
const auto& modules_tag = *static_cast<const multiboot2_modules_tag_t*>(tag);
MUST(g_boot_info.modules.emplace_back(modules_tag.mod_start, modules_tag.mod_end - modules_tag.mod_start));
break;
}
case MULTIBOOT2_TAG_FRAMEBUFFER:
{
const auto& framebuffer_tag = *static_cast<const multiboot2_framebuffer_tag_t*>(tag);
g_boot_info.framebuffer.address = framebuffer_tag.framebuffer_addr;
g_boot_info.framebuffer.pitch = framebuffer_tag.framebuffer_pitch;
g_boot_info.framebuffer.width = framebuffer_tag.framebuffer_width;
g_boot_info.framebuffer.height = framebuffer_tag.framebuffer_height;
g_boot_info.framebuffer.bpp = framebuffer_tag.framebuffer_bpp;
if (framebuffer_tag.framebuffer_type == MULTIBOOT2_FRAMEBUFFER_TYPE_RGB)
g_boot_info.framebuffer.type = FramebufferInfo::Type::RGB;
else if (framebuffer_tag.framebuffer_type == MULTIBOOT2_FRAMEBUFFER_TYPE_TEXT)
g_boot_info.framebuffer.type = FramebufferInfo::Type::Text;
else
g_boot_info.framebuffer.type = FramebufferInfo::Type::Unknown;
break;
}
case MULTIBOOT2_TAG_MMAP:
{
const auto& mmap_tag = *static_cast<const multiboot2_mmap_tag_t*>(tag);
const size_t entry_count = (mmap_tag.size - sizeof(multiboot2_mmap_tag_t)) / mmap_tag.entry_size;
MUST(g_boot_info.memory_map_entries.resize(entry_count));
for (size_t i = 0; i < entry_count; i++)
{
const auto& mmap_entry = *reinterpret_cast<const multiboot2_mmap_entry_t*>(reinterpret_cast<uintptr_t>(tag) + sizeof(multiboot2_mmap_tag_t) + i * mmap_tag.entry_size);
dprintln("entry {16H} {16H} {8H}",
(uint64_t)mmap_entry.base_addr,
(uint64_t)mmap_entry.length,
(uint64_t)mmap_entry.type
);
g_boot_info.memory_map_entries[i].address = mmap_entry.base_addr;
g_boot_info.memory_map_entries[i].length = mmap_entry.length;
g_boot_info.memory_map_entries[i].type = bios_number_to_memory_type(mmap_entry.type);
}
break;
}
case MULTIBOOT2_TAG_OLD_RSDP:
{
if (g_boot_info.rsdp.length == 0)
{
memcpy(&g_boot_info.rsdp, static_cast<const multiboot2_rsdp_tag_t*>(tag)->data, 20);
g_boot_info.rsdp.length = 20;
}
break;
}
case MULTIBOOT2_TAG_NEW_RSDP:
{
const auto& rsdp = *reinterpret_cast<const RSDP*>(static_cast<const multiboot2_rsdp_tag_t*>(tag)->data);
memcpy(&g_boot_info.rsdp, &rsdp, BAN::Math::min<uint32_t>(rsdp.length, sizeof(g_boot_info.rsdp)));
break;
}
}
else if (tag->type == MULTIBOOT2_TAG_NEW_RSDP)
{
const auto& rsdp = *reinterpret_cast<const RSDP*>(static_cast<const multiboot2_rsdp_tag_t*>(tag)->data);
memcpy(&g_boot_info.rsdp, &rsdp, BAN::Math::min<uint32_t>(rsdp.length, sizeof(g_boot_info.rsdp)));
}
}