BOOTARGS_BUFSIZ
#define BOOTINFO_MAXSIZE (BOOTARGS_BUFSIZ - sizeof(uint32_t)) /* uint32_t for magic */
sz = BOOTARGS_BUFSIZ;
((char *)minv - BOOTARGS_BUFSIZ)[sz] = bootargs[sz];
static char bootargs[BOOTARGS_BUFSIZ];
bootmagicp = (uint32_t *)(KERNEL_TEXT_BASE - BOOTARGS_BUFSIZ);
memset(bootmagicp, 0, BOOTARGS_BUFSIZ);
magicaddr = (u_int *)(KERNEL_BASE_PHYS - BOOTARGS_BUFSIZ);