| /* |
| * This file describes the structure passed from the BootX application |
| * (for MacOS) when it is used to boot Linux. |
| * |
| * Written by Benjamin Herrenschmidt. |
| * |
| * Move to LinuxBIOS by LYH yhlu@tyan.com |
| * |
| */ |
| |
| |
| #ifndef _BTEXT_H__ |
| #define _BTEXT_H__ |
| |
| #if 1 |
| #define u32 unsigned int |
| #define u16 unsigned short |
| #define u8 unsigned char |
| #endif |
| |
| /* Here are the boot informations that are passed to the bootstrap |
| * Note that the kernel arguments and the device tree are appended |
| * at the end of this structure. */ |
| typedef struct boot_infos |
| { |
| |
| /* NEW (vers. 2) this holds the current _logical_ base addr of |
| the frame buffer (for use by early boot message) */ |
| u8* logicalDisplayBase; |
| |
| |
| /* Some infos about the current MacOS display */ |
| u32 dispDeviceRect[4]; /* left,top,right,bottom */ |
| u32 dispDeviceDepth; /* (8, 16 or 32) */ |
| u32 dispDeviceBase; /* base address (physical) */ |
| u32 dispDeviceRowBytes; /* rowbytes (in bytes) */ |
| u32 dispDeviceColorsOffset; /* Colormap (8 bits only) or 0 (*) */ |
| |
| |
| /* The framebuffer size (optional, currently 0) */ |
| u32 frameBufferSize; /* Represents a max size, can be 0. */ |
| |
| |
| } boot_infos_t; |
| |
| /* (*) The format of the colormap is 256 * 3 * 2 bytes. Each color index is represented |
| * by 3 short words containing a 16 bits (unsigned) color component. |
| * Later versions may contain the gamma table for direct-color devices here. |
| */ |
| #define BOOTX_COLORTABLE_SIZE (256UL*3UL*2UL) |
| |
| |
| /* |
| * Definitions for using the procedures in btext.c. |
| * |
| * Benjamin Herrenschmidt <benh@kernel.crashing.org> |
| */ |
| |
| extern boot_infos_t disp_bi; |
| extern u32 boot_text_mapped; |
| |
| #endif /* _BTEXT_H */ |
