diff options
Diffstat (limited to 'boot/boot.zig')
| -rw-r--r-- | boot/boot.zig | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/boot/boot.zig b/boot/boot.zig index 9f384fa..28fb8c1 100644 --- a/boot/boot.zig +++ b/boot/boot.zig @@ -12,6 +12,7 @@ const elf = @import("elf.zig"); const keyboard = @import("keyboard.zig"); const timer = @import("timer.zig"); const sched = @import("sched.zig"); +const ata = @import("ata.zig"); const bridge = @import("bridge"); // we need a panic handler otherwise zig wont be happy, @@ -100,6 +101,22 @@ fn kProcCount() u64 { return sched.procCount(); } +// block device, revo builds the filesystem on top of these +fn kDiskPresent() u64 { + return if (ata.present()) 1 else 0; +} +fn kDiskSectors() u64 { + return ata.sectorCount(); +} +fn kDiskRead(lba: u64, phys: u64) u64 { + const buf: *[ata.SECTOR]u8 = @ptrFromInt(pmm.physToVirt(phys)); + return if (ata.read(@truncate(lba), buf)) 1 else 0; +} +fn kDiskWrite(lba: u64, phys: u64) u64 { + const buf: *const [ata.SECTOR]u8 = @ptrFromInt(pmm.physToVirt(phys)); + return if (ata.write(@truncate(lba), buf)) 1 else 0; +} + // entry(_start) export fn _start() callconv(.c) noreturn { serial.init(); @@ -124,6 +141,7 @@ export fn _start() callconv(.c) noreturn { pmmSelfTest(); vmmSelfTest(); + ata.init(); const elf_pages = (elf.hello_elf.len + 4095) / 4096; const elf_phys = pmm.allocContig(elf_pages) orelse @panic("no room for the embedded ELF"); @@ -150,6 +168,10 @@ export fn _start() callconv(.c) noreturn { .proc_count = &kProcCount, .elf_phys = elf_phys, .elf_size = elf.hello_elf.len, + .disk_present = &kDiskPresent, + .disk_sectors = &kDiskSectors, + .disk_read = &kDiskRead, + .disk_write = &kDiskWrite, }; // hand the kernel heap + framebuffer + low level ops to revo and bring up the vm |