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INITIALIZATION AND SYSTEM REQUIREMENTS
Example 12-3. Initialization Header File (init.h)
/*----------------------------------------------------------*/
/*
init.h
/*----------------------------------------------------------*/
#define BYTE_N(n,data)
typedef struct
{
unsigned char bus_byte_0;
unsigned char reserved_0[3];
unsigned char bus_byte_1;
unsigned char reserved_1[3];
unsigned char bus_byte_2;
unsigned char reserved_2[3];
unsigned char bus_byte_3;
unsigned char reserved_3[3];
void
(*first_inst)();
unsigned *prcb_ptr;
int
check_sum[6];
}IBR;
/* PMCON Bus Width can be 8,16 or 32, default to 8
* PMCON14_15 BOOT_BIG_ENDIAN
*/
#define BUS_WIDTH(bw)
#define BOOT_BIG_ENDIAN (on)
/* Bus configuration */
#define DEFAULT
(BUS_WIDTH(8) | BOOT_BIG_ENDIAN(0))
#define I_O
(BUS_WIDTH(8) | BOOT_BIG_ENDIAN(0))
#define DRAM
(BUS_WIDTH(32)| BOOT_BIG_ENDIAN(0))
#define ROM
(BUS_WIDTH(8) | BOOT_BIG_ENDIAN(0))
12-24
(((unsigned)(data) >> (n*8)) & 0xFF)
0=little endian, 1=big endian
((bw==16)?(1<<22):(0)) | ((bw==32)?(2<<22):(0))
((on)?(1<<31:0))
*/
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