/*
* Load the information expected by an alpha kernel.
*
* - The kernel environment is copied into kernel space.
* - Module metadata are formatted and placed in kernel space.
*/
int
bi_load(struct bootinfo *bi, struct preloaded_file *fp, char *args)
{
char *rootdevname;
struct ski_devdesc *rootdev;
struct preloaded_file *xp;
vm_offset_t addr, bootinfo_addr;
u_int pad;
char *kernelname;
vm_offset_t ssym, esym;
struct file_metadata *md;
EFI_MEMORY_DESCRIPTOR *memp;
/*
* Version 1 bootinfo.
*/
bi->bi_magic = BOOTINFO_MAGIC;
bi->bi_version = 1;
/*
* Calculate boothowto.
*/
bi->bi_boothowto = bi_getboothowto(fp->f_args);
/*
* Allow the environment variable 'rootdev' to override the supplied device
* This should perhaps go to MI code and/or have $rootdev tested/set by
* MI code before launching the kernel.
*/
rootdevname = getenv("rootdev");
ski_getdev((void **)(&rootdev), rootdevname, NULL);
if (rootdev == NULL) { /* bad $rootdev/$currdev */
printf("can't determine root device\n");
return(EINVAL);
}
/* Try reading the /etc/fstab file to select the root device */
getrootmount(ski_fmtdev((void *)rootdev));
free(rootdev);
ssym = esym = 0;
if ((md = file_findmetadata(fp, MODINFOMD_SSYM)) != NULL)
ssym = *((vm_offset_t *)&(md->md_data));
if ((md = file_findmetadata(fp, MODINFOMD_ESYM)) != NULL)
esym = *((vm_offset_t *)&(md->md_data));
if (ssym == 0 || esym == 0)
ssym = esym = 0; /* sanity */
bi->bi_symtab = ssym;
bi->bi_esymtab = esym;
/* find the last module in the chain */
addr = 0;
for (xp = file_findfile(NULL, NULL); xp != NULL; xp = xp->f_next) {
if (addr < (xp->f_addr + xp->f_size))
addr = xp->f_addr + xp->f_size;
}
/* pad to a page boundary */
pad = (u_int)addr & PAGE_MASK;
if (pad != 0) {
pad = PAGE_SIZE - pad;
addr += pad;
}
/* copy our environment */
bi->bi_envp = addr;
addr = bi_copyenv(addr);
/* pad to a page boundary */
pad = (u_int)addr & PAGE_MASK;
if (pad != 0) {
pad = PAGE_SIZE - pad;
addr += pad;
}
/* copy module list and metadata */
bi->bi_modulep = addr;
addr = bi_copymodules(addr);
/* all done copying stuff in, save end of loaded object space */
bi->bi_kernend = addr;
/* Describe the SKI memory map. */
bi->bi_memmap = (u_int64_t)(bi + 1);
bi->bi_memmap_size = 2 * sizeof(EFI_MEMORY_DESCRIPTOR);
bi->bi_memdesc_size = sizeof(EFI_MEMORY_DESCRIPTOR);
bi->bi_memdesc_version = 1;
memp = (EFI_MEMORY_DESCRIPTOR *) bi->bi_memmap;
memp[0].Type = EfiConventionalMemory;
memp[0].PhysicalStart = 2L*1024*1024;
memp[0].VirtualStart = 0;
memp[0].NumberOfPages = (64L*1024*1024)>>12;
memp[0].Attribute = EFI_MEMORY_WB;
memp[1].Type = EfiMemoryMappedIOPortSpace;
memp[1].PhysicalStart = 0xffffc000000;
memp[1].VirtualStart = 0;
memp[1].NumberOfPages = (64L*1024*1024)>>12;
memp[1].Attribute = EFI_MEMORY_UC;
return(0);
}
void
ski_main(void)
{
static char malloc[512*1024];
int i;
/*
* initialise the heap as early as possible. Once this is done,
* alloc() is usable. The stack is buried inside us, so this is
* safe.
*/
setheap((void *)malloc, (void *)(malloc + 512*1024));
/*
* XXX Chicken-and-egg problem; we want to have console output
* early, but some console attributes may depend on reading from
* eg. the boot device, which we can't do yet. We can use
* printf() etc. once this is done.
*/
cons_probe();
/*
* Initialise the block cache XXX: Fixme: do we need the bcache ?
*/
/* bcache_init(32, 512); */ /* 16k XXX tune this */
/* Initialise skifs.c */
skifs_dev_init();
printf("\n");
printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
#if 0
printf("Memory: %ld k\n", memsize() / 1024);
#endif
/* XXX presumes that biosdisk is first in devsw */
currdev.d_dev = &devsw[0];
currdev.d_type = DEVT_DISK;
currdev.d_kind.skidisk.unit = 0;
/* XXX should be able to detect this, default to autoprobe */
currdev.d_kind.skidisk.slice = -1;
/* default to 'a' */
currdev.d_kind.skidisk.partition = 0;
#if 0
/* Create arc-specific variables */
bootfile = GetEnvironmentVariable(ARCENV_BOOTFILE);
if (bootfile)
setenv("bootfile", bootfile, 1);
#endif
env_setenv("currdev", EV_VOLATILE, ski_fmtdev(&currdev),
(ev_sethook_t *) ski_setcurrdev, env_nounset);
env_setenv("loaddev", EV_VOLATILE, ski_fmtdev(&currdev), env_noset,
env_nounset);
setenv("LINES", "24", 1); /* optional */
archsw.arch_autoload = ski_autoload;
archsw.arch_getdev = ski_getdev;
archsw.arch_copyin = ski_copyin;
archsw.arch_copyout = ski_copyout;
archsw.arch_readin = ski_readin;
interact(); /* doesn't return */
exit(0);
}
