| .Pass1:␊ |
| %if CONFIG_BOOT0_HFSFIRST␊ |
| cmp␉ BYTE [si + part.type], kPartTypeHFS␉␉; In pass 1 we're going to find a HFS+ partition␊ |
| ; equipped with boot1h in its boot record␊ |
| ; regardless if it's active or not.␊ |
| ; equipped with boot1h in its boot record␊ |
| ; regardless if it's active or not.␊ |
| jne .continue␊ |
| ␉mov␉␉ dh, 1 ␉␉␉␉␉␉␉␉␉; Argument for loadBootSector to check HFS+ partition signature.␊ |
| ␉mov␉␉dh, 1 ␉␉␉␉␉; Argument for loadBootSector to check HFS+ partition signature.␊ |
| %else␊ |
| cmp BYTE [si + part.bootid], kPartActive␉; In pass 1 we are walking on the standard path␊ |
| ; by trying to hop on the active partition.␊ |
| ; by trying to hop on the active partition.␊ |
| jne .continue␊ |
| xor␉ ␉dh, dh ␉␉␉␉␉␉␉␉␉; Argument for loadBootSector to skip HFS+ partition␊ |
| ␉␉␉␉␉␉␉␉␉␉␉ ␉␉; signature check.␊ |
| xor␉ ␉dh, dh ␉␉␉␉␉; Argument for loadBootSector to skip HFS+ partition␊ |
| ␉␉␉␉␉␉␉␉␉␉␉ ; signature check.␊ |
| %endif␊ |
| ␊ |
| jmp .tryToBoot␊ |
| jmp .tryToBoot␊ |
| ␊ |
| .Pass2: ␊ |
| %if CONFIG_BOOT0_HFSFIRST␊ |
| cmp BYTE [si + part.bootid], kPartActive␉; In pass 2 we are walking on the standard path␊ |
| ; by trying to hop on the active partition.␊ |
| ; by trying to hop on the active partition.␊ |
| jne .continue␊ |
| xor␉␉ dh, dh ␉␉␉␉␉␉␉␉␉; Argument for loadBootSector to skip HFS+ partition␊ |
| ␉␉␉␉␉␉␉␉␉␉␉ ␉␉; signature check.␊ |
| xor␉␉dh, dh ␉␉␉␉␉; Argument for loadBootSector to skip HFS+ partition␊ |
| ␉␉␉␉␉␉␉␉␉␉␉ ; signature check.␊ |
| %else␊ |
| cmp␉ BYTE [si + part.type], kPartTypeHFS␉␉; In pass 2 we're going to find a HFS+ partition␊ |
| ; equipped with boot1h in its boot record␊ |
| ; regardless if it's active or not.␊ |
| ; equipped with boot1h in its boot record␊ |
| ; regardless if it's active or not.␊ |
| jne .continue␊ |
| ␉mov ␉␉dh, 1 ␉␉␉␉␉␉␉␉␉; Argument for loadBootSector to check HFS+ partition signature.␊ |
| ␉mov ␉dh, 1 ␉␉␉␉␉; Argument for loadBootSector to check HFS+ partition signature.␊ |
| %endif␊ |
| ␊ |
| DebugChar('*')␊ |
|
| jmp␉ SHORT initBootLoader␊ |
| ␊ |
| .continue:␊ |
| add si, BYTE part_size␉␉␉␉; advance SI to next partition entry␊ |
| add si, BYTE part_size ␉␉␉; advance SI to next partition entry␊ |
| loop .loop ␉␉ ␉; loop through all partition entries␊ |
| ␊ |
| ;␊ |
|
| ; ␊ |
| dec␉ bl␊ |
| jnz .switchPass2␉␉␉␉␉; didn't find Protective MBR before␊ |
| call checkGPT␉␉␉␉␉␉␊ |
| call checkGPT␊ |
| ␊ |
| .switchPass2:␊ |
| ;␊ |
|
| ;␊ |
| checkGPT:␊ |
| push bx␊ |
| ␉␊ |
| ␊ |
| mov␉ di, kLBA1Buffer␉␉␉␉␉␉; address of GUID Partition Table Header␊ |
| cmp␉ DWORD [di], kGPTSignatureLow␉␉; looking for 'EFI '␊ |
| jne␉ .exit␉␉␉␉␉␉␉␉; not found. Giving up.␊ |
|
| .exit:␊ |
| pop bx␊ |
| ret␉␉␉␉␉␉␉␉␉␉␉␉; no more GUID partitions. Giving up.␊ |
| ␊ |
| ␊ |
| ␊ |
| ;--------------------------------------------------------------------------␊ |
| ; loadBootSector - Load boot sector␊ |
| ;␊ |
