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|
//! Hikari Boot Parameters
//!
//! This structure is passed to the Mirai kernel at boot time.
const paging = @import("../paging/paging.zig");
pub const boot_params_magic: u64 = 0x494152494D424B41; // "AKBMIRAI"
pub const boot_params_version: u32 = 1;
pub const BootParams = extern struct {
magic: u64,
version: u32,
size: u32,
framebuffer: FramebufferInfo,
memory_map: MemoryMapInfo,
kernel: KernelInfo,
acpi: AcpiInfo,
boot_time: u64,
reserved: [256]u8,
pub fn initialize() BootParams {
var params: BootParams = undefined;
params.magic = boot_params_magic;
params.version = boot_params_version;
params.size = @sizeOf(BootParams);
var i: usize = 0;
while (i < 256) : (i += 1) {
params.reserved[i] = 0;
}
return params;
}
pub fn is_valid(self: *const BootParams) bool {
return self.magic == boot_params_magic and
self.version == boot_params_version and
self.size == @sizeOf(BootParams);
}
};
pub const FramebufferInfo = extern struct {
base: u64,
size: u64,
width: u32,
height: u32,
stride: u32,
pixel_format: PixelFormat,
red_mask_size: u8,
red_mask_shift: u8,
green_mask_size: u8,
green_mask_shift: u8,
blue_mask_size: u8,
blue_mask_shift: u8,
reserved: [2]u8,
};
pub const PixelFormat = enum(u32) {
rgb = 0,
bgr = 1,
bitmask = 2,
unknown = 255,
};
pub const MemoryMapInfo = extern struct {
entries: u64,
entry_count: u32,
entry_size: u32,
descriptor_version: u32,
reserved: u32,
};
pub const MemoryRegion = extern struct {
base: u64,
size: u64,
region_type: MemoryType,
attributes: u64,
};
pub const MemoryType = enum(u32) {
usable = 0,
reserved = 1,
acpi_reclaimable = 2,
acpi_nvs = 3,
bad_memory = 4,
bootloader_reclaimable = 5,
kernel = 6,
framebuffer = 7,
};
pub const KernelInfo = extern struct {
physical_base: u64,
virtual_base: u64,
size: u64,
entry_point: u64,
pml4_address: u64,
physmap_base: u64,
physmap_size: u64,
stack_top: u64,
stack_size: u64,
};
pub const AcpiInfo = extern struct {
rsdp_address: u64,
rsdp_version: u32,
reserved: u32,
};
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