LXR coreboot-v2/src/include/console/btext.h

   1/*
   2 * This file describes the structure passed from the BootX application
   3 * (for MacOS) when it is used to boot Linux.
   4 *
   5 * Written by Benjamin Herrenschmidt.
   6 *  
   7 * Move to coreboot by LYH  yhlu@tyan.com
   8 *
   9 */
  10
  11
  12#ifndef _BTEXT_H__
  13#define _BTEXT_H__
  14
  15#define u32 uint32_t
  16#define u16 uint16_t
  17#define u8 uint8_t
  18
  19/* Here are the boot informations that are passed to the bootstrap
  20 * Note that the kernel arguments and the device tree are appended
  21 * at the end of this structure. */
  22typedef struct boot_infos
  23{
  24
  25    /* NEW (vers. 2) this holds the current _logical_ base addr of
  26       the frame buffer (for use by early boot message) */
  27    u8*       logicalDisplayBase;
  28
  29
  30    /* Some infos about the current MacOS display */
  31    u32       dispDeviceRect[4];       /* left,top,right,bottom */
  32    u32       dispDeviceDepth;         /* (8, 16 or 32) */
  33    u8*       dispDeviceBase;          /* base address (physical) */
  34    u32       dispDeviceRowBytes;      /* rowbytes (in bytes) */
  35    u32       dispDeviceColorsOffset;  /* Colormap (8 bits only) or 0 (*) */
  36
  37
  38    /* The framebuffer size (optional, currently 0) */
  39    u32       frameBufferSize;         /* Represents a max size, can be 0. */
  40
  41
  42} boot_infos_t;
  43
  44/* (*) The format of the colormap is 256 * 3 * 2 bytes. Each color index is represented
  45 * by 3 short words containing a 16 bits (unsigned) color component.
  46 * Later versions may contain the gamma table for direct-color devices here.
  47 */
  48#define BOOTX_COLORTABLE_SIZE    (256UL*3UL*2UL)
  49
  50
  51/*
  52 * Definitions for using the procedures in btext.c.
  53 *
  54 * Benjamin Herrenschmidt <benh@kernel.crashing.org>
  55 */
  56
  57extern void btext_clearscreen(void);
  58
  59extern boot_infos_t disp_bi;
  60extern u32 boot_text_mapped;
  61
  62void btext_setup_display(u32 width, u32 height, u32 depth, u32 pitch,
  63                         unsigned long address);
  64void map_boot_text(void);
  65void btext_update_display(unsigned long phys, u32 width, u32 height,
  66                          u32 depth, u32 pitch);
  67
  68void btext_drawchar(char c);
  69void btext_drawstring(const char *str);
  70void btext_drawhex(u32 v);
  71
  72#endif /* _BTEXT_H */
  73