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. */
  22 typedef 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
  57 extern void btext_clearscreen(void);
  58
  59 extern boot_infos_t disp_bi;
  60 extern u32 boot_text_mapped;
  61
  62 void btext_setup_display(u32 width, u32 height, u32 depth, u32 pitch,
  63                          unsigned long address);
  64 void map_boot_text(void);
  65 void btext_update_display(unsigned long phys, u32 width, u32 height,
  66                           u32 depth, u32 pitch);
  67
  68 void btext_drawchar(char c);
  69 void btext_drawstring(const char *str);
  70 void btext_drawhex(u32 v);
  71
  72 #endif /* _BTEXT_H */