| /**************************************************************************** |
| * YABEL BIOS Emulator |
| * |
| * Copyright (c) 2008 Pattrick Hueper <phueper@hueper.net> |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| ****************************************************************************/ |
| |
| #ifndef _YABEL_PMM_H_ |
| #define _YABEL_PMM_H_ |
| |
| #include <types.h> |
| |
| /* PMM Structure see PMM Spec Version 1.01 Chapter 3.1.1 |
| * (search web for specspmm101.pdf) |
| */ |
| typedef struct { |
| u8 signature[4]; |
| u8 struct_rev; |
| u8 length; |
| u8 checksum; |
| u32 entry_point_offset; |
| u8 reserved[5]; |
| /* Code is not part of the specced PMM struct, however, since I cannot |
| * put the handling of PMM in the virtual memory (I don't want to hack |
| * it together in x86 assembly ;-)) this code array is pointed to by |
| * entry_point_offset, in code there is only a INT call and a RETF, |
| * thus every PMM call will issue a PMM INT (only defined in YABEL, |
| * see interrupt.c) and the INT Handler will do the actual PMM work. |
| */ |
| u8 code[3]; |
| } __packed pmm_information_t; |
| |
| /* This function is used to setup the PMM struct in virtual memory |
| * at a certain offset */ |
| u8 pmm_setup(u16 segment, u16 offset); |
| |
| /* This is the INT Handler mentioned above, called by my special PMM INT. */ |
| void pmm_handleInt(void); |
| |
| void pmm_test(void); |
| |
| #endif /* _YABEL_PMM_H_ */ |
