patch-2.4.1 linux/arch/ppc/coffboot/main.c

• Lines: 216
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.0/linux/arch/ppc/coffboot/main.c
• Orig date: Wed Feb 9 19:43:47 2000

diff -u --recursive --new-file v2.4.0/linux/arch/ppc/coffboot/main.c linux/arch/ppc/coffboot/main.c
@@ -1,215 +0,0 @@
-/*
- * Copyright (C) Paul Mackerras 1997.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#include "nonstdio.h"
-#include "rs6000.h"
-#include "zlib.h"
-#include <asm/bootinfo.h>
-#include <asm/processor.h>
-#define __KERNEL__
-#include <asm/page.h>
-
-extern void *finddevice(const char *);
-extern int getprop(void *, const char *, void *, int);
-void gunzip(void *, int, unsigned char *, int *);
-
-#define get_16be(x)	(*(unsigned short *)(x))
-#define get_32be(x)	(*(unsigned *)(x))
-
-#define RAM_START	0xc0000000
-#define PROG_START	RAM_START
-#define RAM_END		(RAM_START + 0x800000)	/* only 8M mapped with BATs */
-
-#define RAM_FREE	(RAM_START + 0x540000)	/* after image of coffboot */
-
-char *avail_ram;
-char *end_avail;
-
-coffboot(int a1, int a2, void *prom)
-{
-    void *options;
-    unsigned loadbase;
-    struct external_filehdr *eh;
-    struct external_scnhdr *sp;
-    struct external_scnhdr *isect, *rsect;
-    int ns, oh, i;
-    unsigned sa, len;
-    void *dst;
-    unsigned char *im;
-    unsigned initrd_start, initrd_size;
-
-    printf("coffboot starting\n");
-    options = finddevice("/options");
-    if (options == (void *) -1)
-	exit();
-    if (getprop(options, "load-base", &loadbase, sizeof(loadbase))
-	!= sizeof(loadbase)) {
-	printf("error getting load-base\n");
-	exit();
-    }
-    setup_bats(RAM_START);
-
-    loadbase += RAM_START;
-    eh = (struct external_filehdr *) loadbase;
-    ns = get_16be(eh->f_nscns);
-    oh = get_16be(eh->f_opthdr);
-
-    sp = (struct external_scnhdr *) (loadbase + sizeof(struct external_filehdr) + oh);
-    isect = rsect = NULL;
-    for (i = 0; i < ns; ++i, ++sp) {
-	if (strcmp(sp->s_name, "image") == 0)
-	    isect = sp;
-	else if (strcmp(sp->s_name, "initrd") == 0)
-	    rsect = sp;
-    }
-    if (isect == NULL) {
-	printf("image section not found\n");
-	exit();
-    }
-
-    if (rsect != NULL && (initrd_size = get_32be(rsect->s_size)) != 0) {
-	initrd_start = (RAM_END - initrd_size) & ~0xFFF;
-	a1 = initrd_start;
-	a2 = initrd_size;
-	printf("initial ramdisk at %x (%u bytes)\n",
-	       initrd_start, initrd_size);
-	memcpy((char *) initrd_start,
-	       (char *) (loadbase + get_32be(rsect->s_scnptr)),
-	       initrd_size);
-	end_avail = (char *) initrd_start;
-    } else {
-	end_avail = (char *) RAM_END;
-    }
-	
-    im = (unsigned char *)(loadbase + get_32be(isect->s_scnptr));
-    len = get_32be(isect->s_size);
-    dst = (void *) PROG_START;
-
-    if (im[0] == 0x1f && im[1] == 0x8b) {
-	void *cp = (void *) RAM_FREE;
-	avail_ram = (void *) (RAM_FREE + ((len + 7) & -8));
-	memcpy(cp, im, len);
-	printf("gunzipping... ");
-	gunzip(dst, 0x400000, cp, &len);
-	printf("done\n");
-
-    } else {
-	memmove(dst, im, len);
-    }
-
-    flush_cache(dst, len);
-
-    sa = (unsigned long)dst;
-    printf("start address = 0x%x\n", sa);
-
-#if 0
-    pause();
-#endif
-    {
-	    struct bi_record *rec;
-	    
-	    rec = (struct bi_record *)_ALIGN((unsigned long)dst+len+(1<<20)-1,(1<<20));
-	    
-	    rec->tag = BI_FIRST;
-	    rec->size = sizeof(struct bi_record);
-	    rec = (struct bi_record *)((unsigned long)rec + rec->size);
-
-	    rec->tag = BI_BOOTLOADER_ID;
-	    sprintf( (char *)rec->data, "coffboot");
-	    rec->size = sizeof(struct bi_record) + strlen("coffboot") + 1;
-	    rec = (struct bi_record *)((unsigned long)rec + rec->size);
-	    
-	    rec->tag = BI_MACHTYPE;
-	    rec->data[0] = _MACH_Pmac;
-	    rec->data[1] = 1;
-	    rec->size = sizeof(struct bi_record) + sizeof(unsigned long);
-	    rec = (struct bi_record *)((unsigned long)rec + rec->size);
-	    
-	    rec->tag = BI_LAST;
-	    rec->size = sizeof(struct bi_record);
-	    rec = (struct bi_record *)((unsigned long)rec + rec->size);
-    }
-    
-    (*(void (*)())sa)(a1, a2, prom);
-
-    printf("returned?\n");
-
-    pause();
-}
-
-void *zalloc(void *x, unsigned items, unsigned size)
-{
-    void *p = avail_ram;
-
-    size *= items;
-    size = (size + 7) & -8;
-    avail_ram += size;
-    if (avail_ram > end_avail) {
-	printf("oops... out of memory\n");
-	pause();
-    }
-    return p;
-}
-
-void zfree(void *x, void *addr, unsigned nb)
-{
-}
-
-#define HEAD_CRC	2
-#define EXTRA_FIELD	4
-#define ORIG_NAME	8
-#define COMMENT		0x10
-#define RESERVED	0xe0
-
-#define DEFLATED	8
-
-void gunzip(void *dst, int dstlen, unsigned char *src, int *lenp)
-{
-    z_stream s;
-    int r, i, flags;
-
-    /* skip header */
-    i = 10;
-    flags = src[3];
-    if (src[2] != DEFLATED || (flags & RESERVED) != 0) {
-	printf("bad gzipped data\n");
-	exit();
-    }
-    if ((flags & EXTRA_FIELD) != 0)
-	i = 12 + src[10] + (src[11] << 8);
-    if ((flags & ORIG_NAME) != 0)
-	while (src[i++] != 0)
-	    ;
-    if ((flags & COMMENT) != 0)
-	while (src[i++] != 0)
-	    ;
-    if ((flags & HEAD_CRC) != 0)
-	i += 2;
-    if (i >= *lenp) {
-	printf("gunzip: ran out of data in header\n");
-	exit();
-    }
-    s.zalloc = zalloc;
-    s.zfree = zfree;
-    r = inflateInit2(&s, -MAX_WBITS);
-    if (r != Z_OK) {
-	printf("inflateInit2 returned %d\n", r);
-	exit();
-    }
-    s.next_in = src + i;
-    s.avail_in = *lenp - i;
-    s.next_out = dst;
-    s.avail_out = dstlen;
-    r = inflate(&s, Z_FINISH);
-    if (r != Z_OK && r != Z_STREAM_END) {
-	printf("inflate returned %d\n", r);
-	exit();
-    }
-    *lenp = s.next_out - (unsigned char *) dst;
-    inflateEnd(&s);
-}