1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
#![no_std]
#![no_main]
#![allow(unsafe_code)]
use core::panic::PanicInfo;
use rsnix::uefi::*;
// ---------------------------------------------------------------------------
// Panic handler
// ---------------------------------------------------------------------------
#[panic_handler]
fn panic(info: &PanicInfo) -> ! {
use core::fmt::Write;
rsnix::serial::write_str("\r\n*** PANIC ***\r\n");
let _ = write!(&mut rsnix::serial::SerialWriter, "{}\r\n", info.message());
if let Some(loc) = info.location() {
let _ = write!(
&mut rsnix::serial::SerialWriter,
" at {}:{}\r\n",
loc.file(),
loc.line()
);
}
loop {
unsafe {
core::arch::asm!("cli; hlt");
}
}
}
// ---------------------------------------------------------------------------
// EFI entry point
// ---------------------------------------------------------------------------
/// EFI entry point.
///
/// # Safety
///
/// The firmware hands us raw pointers (image handle, system table) that
/// must remain valid for the lifetime of the call — a contract guaranteed
/// by the UEFI loader.
#[no_mangle]
pub unsafe extern "efiapi" fn efi_main(image_handle: Handle, system_table: *mut SystemTable) -> ! {
let st = unsafe { &mut *system_table };
let bs = unsafe { &mut *st.boot_services };
let con_out = unsafe { &mut *st.con_out };
// Keep the runtime-services table for later (ResetSystem → poweroff).
rsnix::power::init(st.runtime_services);
// ---- Phase 1: UEFI boot services alive ----
// Print banner via UEFI console
unsafe {
let s = concat!("rsnix v", env!("CARGO_PKG_VERSION"), " booting..\n");
let bytes = s.as_bytes();
let mut buf: [u16; 48] = [0; 48];
for (i, &b) in bytes.iter().enumerate().take(47) {
buf[i] = b as u16;
}
(con_out.output_string)(con_out, buf.as_ptr());
}
rsnix::serial::init();
rsnix::serial_println!("=== rsnix boot ===");
// Stash the memory map
let map_key = match rsnix::memory::capture_memory_map(bs) {
Ok(k) => k,
Err(e) => {
rsnix::serial_println!("mem: capture_memory_map failed 0x{:x}", e);
0
}
};
// Locate GOP (Graphics Output Protocol)
let mut gop_interface: *mut core::ffi::c_void = core::ptr::null_mut();
let gop_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
let gop_result = unsafe {
(bs.locate_protocol)(
&gop_guid as *const Guid,
core::ptr::null_mut(),
&mut gop_interface,
)
};
if gop_result == EFI_SUCCESS {
let gop = unsafe { &mut *(gop_interface as *mut GraphicsOutputProtocol) };
rsnix::serial_println!("gop: framebuffer found");
rsnix::gop::init(gop);
} else {
rsnix::serial_println!("gop: not found (0x{:x})", gop_result);
}
rsnix::vt::init();
let (rows, cols) = rsnix::vt::size();
rsnix::serial_println!("vt: terminal ready ({}x{})", rows, cols);
// ExitBootServices — we now own the machine
if unsafe { (bs.exit_boot_services)(image_handle, map_key) } != EFI_SUCCESS {
rsnix::serial_println!("WARN: ExitBootServices failed, retrying...");
match unsafe { rsnix::memory::refresh_and_exit(bs, image_handle) } {
Ok(_) => {}
Err(e) => {
rsnix::serial_println!("FATAL: cannot ExitBootServices (0x{:x})", e);
loop {
unsafe {
core::arch::asm!("cli; hlt");
}
}
}
}
}
// ---- Phase 2: Native mode ----
rsnix::serial::init();
rsnix::serial_println!("serial: COM1 115200 8N1");
rsnix::ps2::init();
rsnix::serial_println!("ps2: keyboard initialized");
rsnix::interrupts::init();
rsnix::serial_println!("intr: IDT loaded, PIC remapped, timer ~100 Hz");
dump_memory_summary();
if rsnix::memory::self_test() {
rsnix::serial_println!("heap: self-test OK (alloc/free/coalesce)");
} else {
rsnix::serial_println!("heap: self-test FAILED");
}
if rsnix::memory::init_page_allocator() {
rsnix::serial_println!("pages: bitmap allocator ready");
} else {
rsnix::serial_println!("pages: init FAILED");
}
if rsnix::memory::page_self_test() {
rsnix::serial_println!("pages: self-test OK (alloc/free/runs)");
} else {
rsnix::serial_println!("pages: self-test FAILED");
}
if rsnix::paging::adopt_tables() {
rsnix::serial_println!(
"pg: adopted own page tables (cr3={:#x})",
rsnix::paging::cr3()
);
} else {
rsnix::serial_println!("pg: adopt_tables FAILED");
}
if rsnix::paging::self_test() {
rsnix::serial_println!("pg: self-test OK (map/unmap/split)");
} else {
rsnix::serial_println!("pg: self-test FAILED");
}
let t = rsnix::rtc::now();
rsnix::serial_println!(
"rtc: {}-{:02}-{:02} {:02}:{:02}:{:02}",
t.year,
t.month,
t.day,
t.hour,
t.minute,
t.second
);
let devices = rsnix::pci::probe();
rsnix::serial_println!("pci: {} device(s) on all buses", devices.len());
// Disk: AHCI SATA driver, then mount every FAT32 volume under /disk/<UID>/.
if !rsnix::ahci::init() {
rsnix::serial_println!("ahci: no disk attached");
}
rsnix::fat::init(); // prints one line per mounted volume
let (dirs, files) = rsnix::fs::init();
rsnix::serial_println!("fs: vfs ready — {} dirs, {} files", dirs, files);
if rsnix::fs::self_test() {
rsnix::serial_println!("fs: self-test OK (create/read/write/remove)");
} else {
rsnix::serial_println!("fs: self-test FAILED");
}
rsnix::serial_println!("boot: entering shell");
shell::run();
}
// ---------------------------------------------------------------------------
// Print a memory summary from the stashed memory map
// ---------------------------------------------------------------------------
fn dump_memory_summary() {
let (map, key) = rsnix::memory::get_map();
let mut conventional_4k = 0u64;
let mut addr_space_4k = 0u64;
for desc in map.iter() {
let pages = desc.number_of_pages;
addr_space_4k += pages;
if desc.kind == 7 {
conventional_4k += pages;
}
}
rsnix::serial_println!(
"mem: {} entries, key=0x{:x}, usable: {} KB ({} MB)",
map.len(),
key,
conventional_4k * 4,
(conventional_4k * 4) / 1024,
);
rsnix::serial_println!(
"mem: address space: {} MB (incl. PCIe MMIO)",
(addr_space_4k * 4) / 1024,
);
}
|
