redboot.h
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#ifndef _PPC_REDBOOT_H
#define _PPC_REDBOOT_H
//=========================================================================
// include/asm-ppc/redboot.h
// Copyright (c) 2002, 2003 Gary Thomas (<gary@mlbassoc.com>
// Copyright (c) 1997 Dan Malek (dmalek@jlc.net)
//
// Board specific details, as provided by RedBoot
//
/* A Board Information structure that is given to a program when
* RedBoot starts it up. Note: not all fields make sense for all
* architectures and it's up to the platform specific code to fill
* in the details.
*/
typedef struct bd_info {
unsigned int bi_tag; /* Should be 0x42444944 "BDID" */
unsigned int bi_size; /* Size of this structure */
unsigned int bi_revision; /* revision of this structure */
unsigned int bi_bdate; /* bootstrap date, i.e. 0x19971106 */
unsigned int bi_memstart; /* Memory start address */
unsigned int bi_memsize; /* Memory (end) size in bytes */
unsigned int bi_intfreq; /* Internal Freq, in Hz */
unsigned int bi_busfreq; /* Bus Freq, in Hz */
unsigned int bi_cpmfreq; /* CPM Freq, in Hz */
unsigned int bi_brgfreq; /* BRG Freq, in Hz */
unsigned int bi_vco; /* VCO Out from PLL */
unsigned int bi_pci_freq; /* PCI Freq, in Hz */
unsigned int bi_baudrate; /* Default console baud rate */
unsigned int bi_immr; /* IMMR when called from boot rom */
unsigned char bi_enetaddr[6];
unsigned int bi_flashbase; /* Physical address of FLASH memory */
unsigned int bi_flashsize; /* Length of FLASH memory */
int bi_flashwidth; /* Width (8,16,32,64) */
unsigned char *bi_cmdline; /* Pointer to command line */
unsigned char bi_esa[3][6]; /* Ethernet station addresses */
unsigned int bi_ramdisk_begin, bi_ramdisk_end;
struct { /* Information about [main] video screen */
short x_res; /* Horizontal resolution in pixels */
short y_res; /* Vertical resolution in pixels */
short bpp; /* Bits/pixel */
short mode; /* Type of pixels (packed, indexed) */
unsigned long fb; /* Pointer to frame buffer (pixel) memory */
} bi_video;
void (*bi_cputc)(char); /* Write a character to the RedBoot console */
char (*bi_cgetc)(void); /* Read a character from the RedBoot console */
int (*bi_ctstc)(void); /* Test for input on the RedBoot console */
} bd_t;
#define BI_REV 0x0102 /* Version 1.02 */
#define bi_pci_busfreq bi_pci_freq
#define bi_immr_base bi_immr
#endif