patch-2.4.5 linux/arch/ppc/coffboot/coffmain.c

• Lines: 227
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.4/linux/arch/ppc/coffboot/coffmain.c
• Orig date: Mon Jan 22 15:41:14 2001

diff -u --recursive --new-file v2.4.4/linux/arch/ppc/coffboot/coffmain.c linux/arch/ppc/coffboot/coffmain.c
@@ -1,226 +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 "zlib.h"
-#include <asm/bootinfo.h>
-#include <asm/processor.h>
-#include <asm/page.h>
-
-extern void *finddevice(const char *);
-extern int getprop(void *, const char *, void *, int);
-extern char *claim(unsigned, unsigned, unsigned);
-void make_bi_recs(unsigned long);
-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 RAM_END		(RAM_START + 0x800000)	/* only 8M mapped with BATs */
-
-#define PROG_START	RAM_START
-#define PROG_SIZE	0x00400000
-
-#define SCRATCH_SIZE	(128 << 10)
-
-char *avail_ram;
-char *begin_avail, *end_avail;
-char *avail_high;
-unsigned int heap_use;
-unsigned int heap_max;
-
-extern char _start[], _end[];
-extern char image_data[];
-extern int image_len;
-extern char initrd_data[];
-extern int initrd_len;
-
-char heap[SCRATCH_SIZE];
-
-boot(int a1, int a2, void *prom)
-{
-    int ns, oh, i;
-    unsigned sa, len;
-    void *dst;
-    unsigned char *im;
-    unsigned initrd_start, initrd_size;
-    
-    printf("coffboot starting: loaded at 0x%x\n", _start);
-    setup_bats(RAM_START);
-    if (initrd_len) {
-	initrd_size = initrd_len;
-	initrd_start = (RAM_END - initrd_size) & ~0xFFF;
-	a1 = initrd_start;
-	a2 = initrd_size;
-	claim(initrd_start - RAM_START, RAM_END - initrd_start, 0);
-	printf("initial ramdisk moving 0x%x <- 0x%x (%x bytes)\n",
-	       initrd_start, initrd_data, initrd_size);
-	memcpy((char *)initrd_start, initrd_data, initrd_size);
-    }
-    im = image_data;
-    len = image_len;
-    /* claim 3MB starting at 0 */
-    claim(0, PROG_SIZE, 0);
-    dst = (void *) RAM_START;
-    if (im[0] == 0x1f && im[1] == 0x8b) {
-	/* claim some memory for scratch space */
-	begin_avail = avail_high = avail_ram = heap;
-	end_avail = heap + sizeof(heap);
-	printf("heap at 0x%x\n", avail_ram);
-	printf("gunzipping (0x%x <- 0x%x:0x%0x)...", dst, im, im+len);
-	gunzip(dst, PROG_SIZE, im, &len);
-	printf("done %u bytes\n", len);
-	printf("%u bytes of heap consumed, max in use %u\n",
-	       avail_high - begin_avail, heap_max);
-    } else {
-	memmove(dst, im, len);
-    }
-
-    flush_cache(dst, len);
-    make_bi_recs((unsigned long)dst + len);
-    
-    sa = (unsigned long)PROG_START;
-    printf("start address = 0x%x\n", sa);
-
-    (*(void (*)())sa)(a1, a2, prom);
-
-    printf("returned?\n");
-
-    pause();
-}
-
-void make_bi_recs(unsigned long addr)
-{
-	struct bi_record *rec;
-
-	rec = (struct bi_record *)PAGE_ALIGN(addr);
-	    
-	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);
-}
-
-struct memchunk {
-    unsigned int size;
-    struct memchunk *next;
-};
-
-static struct memchunk *freechunks;
-
-void *zalloc(void *x, unsigned items, unsigned size)
-{
-    void *p;
-    struct memchunk **mpp, *mp;
-
-    size *= items;
-    size = (size + 7) & -8;
-    heap_use += size;
-    if (heap_use > heap_max)
-	heap_max = heap_use;
-    for (mpp = &freechunks; (mp = *mpp) != 0; mpp = &mp->next) {
-	if (mp->size == size) {
-	    *mpp = mp->next;
-	    return mp;
-	}
-    }
-    p = avail_ram;
-    avail_ram += size;
-    if (avail_ram > avail_high)
-	avail_high = avail_ram;
-    if (avail_ram > end_avail) {
-	printf("oops... out of memory\n");
-	pause();
-    }
-    return p;
-}
-
-void zfree(void *x, void *addr, unsigned nb)
-{
-    struct memchunk *mp = addr;
-
-    nb = (nb + 7) & -8;
-    heap_use -= nb;
-    if (avail_ram == addr + nb) {
-	avail_ram = addr;
-	return;
-    }
-    mp->size = nb;
-    mp->next = freechunks;
-    freechunks = mp;
-}
-
-#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 msg: %s\n", r, s.msg);
-	exit();
-    }
-    *lenp = s.next_out - (unsigned char *) dst;
-    inflateEnd(&s);
-}