boot/bootinfo.c

#include

#include

/*Check if the bit BIT in FLAGS is set.*/

#define CHECK_FLAG(flags,bit) ((flags) & (1 << (bit)))

struct MultibootInfo bootInfo;

extern void early_serial_init();

void setup_param(uint8_t *addr, int magic)

{

early_serial_init();

struct MultibootInfo *mbi = (struct MultibootInfo *)addr;

bootInfo = *mbi;

KPRINTF("cs = %x, ds = %x, es = %x, fs = %x, gs = %x, ss = %x\n", 

get_cs(), get_ds(), get_es(), get_fs(), get_gs(), get_ss());

KPRINTF("magic = %x\n", magic);

KPRINTF("Start = %x\n", &kernelStart);

KPRINTF("End   = %x\n", &kernelEnd);

KPRINTF("low = %dK, upper = %dK\n", bootInfo.memLower, bootInfo.memUpper);

/*Is the command line passed?*/

if(CHECK_FLAG(mbi->flags, 2))

{

char *src = (char *)mbi->cmdline;

KPRINTF("cmdline : %s\n", src);

}

/*Are mods_* valid?*/

if(CHECK_FLAG(mbi->flags, 3))

{

struct MultibootModule *mod;

int i;

for(i = 0, mod=(struct MultibootModule *)mbi->modsAddress; imodsCount; i++, mod++)

{

char *src = (char *)mod->string;

KPRINTF("mod : %s\n", src);

}

}

}