patch-2.4.10 linux/arch/ppc/boot/chrp/main.c
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- Lines: 229
- Date:
Tue Aug 28 06:58:33 2001
- Orig file:
v2.4.9/linux/arch/ppc/boot/chrp/main.c
- Orig date:
Tue Jul 3 17:08:18 2001
diff -u --recursive --new-file v2.4.9/linux/arch/ppc/boot/chrp/main.c linux/arch/ppc/boot/chrp/main.c
@@ -1,5 +1,5 @@
/*
- * BK Id: SCCS/s.main.c 1.9 06/12/01 16:42:26 paulus
+ * BK Id: SCCS/s.main.c 1.13 07/27/01 20:24:17 trini
*/
/*
* Copyright (C) Paul Mackerras 1997.
@@ -10,14 +10,28 @@
* 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 char _end[];
+extern char initrd_data[];
+extern char image_data[];
+extern char sysmap_data[];
extern int getprop(void *, const char *, void *, int);
-void gunzip(void *, int, unsigned char *, int *);
+extern int initrd_len;
+extern int image_len;
+extern int sysmap_len;
+extern unsigned int heap_max;
+extern void claim(unsigned int virt, unsigned int size, unsigned int align);
+extern void *finddevice(const char *);
+extern void flush_cache(void *, unsigned long);
+extern void gunzip(void *, int, unsigned char *, int *);
+extern void make_bi_recs(unsigned long addr, char *name, unsigned int mach,
+ unsigned int progend);
+extern void pause(void);
+
+char *avail_ram;
+char *begin_avail, *end_avail;
+char *avail_high;
#define RAM_START 0x00000000
#define RAM_END (64<<20)
@@ -27,38 +41,28 @@
#define RAM_FREE ((unsigned long)(_end+0x1000)&~0xFFF)
#define PROG_START 0x00010000
+#define PROG_SIZE 0x00400000 /* 4MB */
-char *avail_ram;
-char *end_avail;
-
-extern char _end[];
-extern char image_data[];
-extern int image_len;
-extern char initrd_data[];
-extern int initrd_len;
-extern char sysmap_data[];
-extern int sysmap_len;
+#define SCRATCH_SIZE (128 << 10)
-static char scratch[1024<<10]; /* 1MB of scratch space for gunzip */
+static char scratch[SCRATCH_SIZE]; /* 1MB of scratch space for gunzip */
+void
chrpboot(int a1, int a2, void *prom)
{
- int ns, oh, i;
unsigned sa, len;
void *dst;
unsigned char *im;
- unsigned initrd_start, initrd_size;
+ unsigned initrd_start=0, initrd_size=0;
extern char _start;
- printf("chrpboot starting: loaded at 0x%x\n\r", &_start);
+ printf("chrpboot starting: loaded at 0x%p\n\r", &_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_END - initrd_start, 0);
- printf("initial ramdisk moving 0x%x <- 0x%x (%x bytes)\n\r",
+ printf("initial ramdisk moving 0x%x <- 0x%p (%x bytes)\n\r",
initrd_start, initrd_data, initrd_size);
memcpy((char *)initrd_start, initrd_data, initrd_size);
}
@@ -66,133 +70,31 @@
im = image_data;
len = image_len;
/* claim 4MB starting at PROG_START */
- claim(PROG_START, (4<<20) - PROG_START, 0);
+ claim(PROG_START, PROG_SIZE - PROG_START, 0);
dst = (void *) PROG_START;
if (im[0] == 0x1f && im[1] == 0x8b) {
avail_ram = scratch;
+ begin_avail = avail_high = avail_ram;
end_avail = scratch + sizeof(scratch);
- printf("gunzipping (0x%x <- 0x%x:0x%0x)...", dst, im, im+len);
+ printf("gunzipping (0x%p <- 0x%p:0x%p)...", dst, im, im+len);
gunzip(dst, 0x400000, im, &len);
printf("done %u bytes\n\r", len);
+ printf("%u bytes of heap consumed, max in use %u\n\r",
+ avail_high - begin_avail, heap_max);
} else {
memmove(dst, im, len);
}
flush_cache(dst, len);
+ make_bi_recs(((unsigned long) dst + len), "chrpboot", _MACH_chrp,
+ (PROG_START + PROG_SIZE));
sa = (unsigned long)PROG_START;
printf("start address = 0x%x\n\r", sa);
- {
- 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, "chrpboot");
- rec->size = sizeof(struct bi_record) + strlen("chrpboot") + 1;
- rec = (struct bi_record *)((unsigned long)rec + rec->size);
-
- rec->tag = BI_MACHTYPE;
- rec->data[0] = _MACH_chrp;
- rec->data[1] = 1;
- rec->size = sizeof(struct bi_record) + 2 * sizeof(unsigned long);
- rec = (struct bi_record *)((unsigned long)rec + rec->size);
-#if 0
- rec->tag = BI_SYSMAP;
- rec->data[0] = (unsigned long)sysmap_data;
- rec->data[1] = sysmap_len;
- rec->size = sizeof(struct bi_record) + 2 * sizeof(unsigned long);
- rec = (struct bi_record *)((unsigned long)rec + rec->size);
-#endif
- rec->tag = BI_LAST;
- rec->size = sizeof(struct bi_record);
- rec = (struct bi_record *)((unsigned long)rec + rec->size);
- }
- (*(void (*)())sa)(a1, a2, prom);
+ (*(void (*)())sa)(a1, a2, prom, initrd_start, initrd_size);
printf("returned?\n\r");
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\r");
- pause();
- }
- return p;
-}
-
-void zfree(void *x, void *addr, unsigned nb)
-{
- nb = (nb + 7) & -8;
- if (addr == (avail_ram - nb)) {
- avail_ram -= 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\r");
- 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\r");
- exit();
- }
-
- s.zalloc = zalloc;
- s.zfree = zfree;
- r = inflateInit2(&s, -MAX_WBITS);
- if (r != Z_OK) {
- printf("inflateInit2 returned %d\n\r", 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", r, s.msg);
- exit();
- }
- *lenp = s.next_out - (unsigned char *) dst;
- inflateEnd(&s);
}
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