static unsigned long __init
pcore_find_end_of_memory(void)
{
/* Cover I/O space with a BAT */
/* yuck, better hope your ram size is a power of 2 -- paulus */
pcore_set_bat();
return mpc10x_get_mem_size(MPC10X_MEM_MAP_B);
}
static unsigned long __init
sandpoint_find_end_of_memory(void)
{
bd_t *bp = (bd_t *)__res;
if (bp->bi_memsize)
return bp->bi_memsize;
/* DINK32 13.0 correctly initalizes things, so iff you use
* this you _should_ be able to change this instead of a
* hardcoded value. */
#if 0
return mpc10x_get_mem_size(MPC10X_MEM_MAP_B);
#else
return 32*1024*1024;
#endif
}
struct bi_record *
decompress_kernel(unsigned long load_addr, int num_words, unsigned long cksum,
void *ignored)
{
#ifdef INTERACTIVE_CONSOLE
int timer = 0;
char ch;
#endif
char *cp;
struct bi_record *rec;
unsigned long rec_loc, initrd_loc, TotalMemory = 0;
serial_fixups();
com_port = serial_init(0, NULL);
#ifdef CONFIG_LOPEC
/*
* This should work on any board with an MPC10X which is properly
* initalized.
*/
TotalMemory = mpc10x_get_mem_size(MPC10X_MEM_MAP_B);
#endif
/* assume the chunk below 8M is free */
end_avail = (char *)0x00800000;
/*
* Reveal where we were loaded at and where we
* were relocated to.
*/
puts("loaded at: "); puthex(load_addr);
puts(" "); puthex((unsigned long)(load_addr + (4*num_words)));
puts("\n");
if ( (unsigned long)load_addr != (unsigned long)&start )
{
puts("relocated to: "); puthex((unsigned long)&start);
puts(" ");
puthex((unsigned long)((unsigned long)&start + (4*num_words)));
puts("\n");
}
/*
* We link ourself to 0x00800000. When we run, we relocate
* ourselves there. So we just need __image_begin for the
* start. -- Tom
*/
zimage_start = (char *)(unsigned long)(&__image_begin);
zimage_size = (unsigned long)(&__image_end) -
(unsigned long)(&__image_begin);
initrd_size = (unsigned long)(&__ramdisk_end) -
(unsigned long)(&__ramdisk_begin);
/*
* The zImage and initrd will be between start and _end, so they've
* already been moved once. We're good to go now. -- Tom
*/
avail_ram = (char *)PAGE_ALIGN((unsigned long)_end);
puts("zimage at: "); puthex((unsigned long)zimage_start);
puts(" "); puthex((unsigned long)(zimage_size+zimage_start));
puts("\n");
if ( initrd_size ) {
puts("initrd at: ");
puthex((unsigned long)(&__ramdisk_begin));
puts(" "); puthex((unsigned long)(&__ramdisk_end));puts("\n");
}
avail_ram = (char *)0x00400000;
end_avail = (char *)0x00800000;
puts("avail ram: "); puthex((unsigned long)avail_ram); puts(" ");
puthex((unsigned long)end_avail); puts("\n");
if (keyb_present)
CRT_tstc(); /* Forces keyboard to be initialized */
#ifdef CONFIG_GEMINI
/*
* If cmd_line is empty and cmd_preset is not, copy cmd_preset
* to cmd_line. This way we can override cmd_preset with the
* command line from Smon.
*/
if ( (cmd_line[0] == '\0') && (cmd_preset[0] != '\0'))
memcpy (cmd_line, cmd_preset, sizeof(cmd_preset));
#endif
/* Display standard Linux/PPC boot prompt for kernel args */
puts("\nLinux/PPC load: ");
cp = cmd_line;
memcpy (cmd_line, cmd_preset, sizeof(cmd_preset));
while ( *cp ) putc(*cp++);
#ifdef INTERACTIVE_CONSOLE
/*
* If they have a console, allow them to edit the command line.
* Otherwise, don't bother wasting the five seconds.
*/
while (timer++ < 5*1000) {
if (tstc()) {
while ((ch = getc()) != '\n' && ch != '\r') {
/* Test for backspace/delete */
if (ch == '\b' || ch == '\177') {
if (cp != cmd_line) {
cp--;
puts("\b \b");
}
/* Test for ^x/^u (and wipe the line) */
} else if (ch == '\030' || ch == '\025') {
while (cp != cmd_line) {
cp--;
puts("\b \b");
}
} else {
*cp++ = ch;
putc(ch);
}
}
break; /* Exit 'timer' loop */
}
udelay(1000); /* 1 msec */
}
*cp = 0;
#endif
puts("\n");
puts("Uncompressing Linux...");
gunzip(0, 0x400000, zimage_start, &zimage_size);
puts("done.\n");
/*
* Create bi_recs for cmd_line and initrds
*/
rec_loc = _ALIGN((unsigned long)(zimage_size) +
(1 << 20) - 1, (1 << 20));
rec = (struct bi_record *)rec_loc;
/* We need to make sure that the initrd and bi_recs do not
* overlap. */
if ( initrd_size ) {
initrd_loc = (unsigned long)(&__ramdisk_begin);
/* If the bi_recs are in the middle of the current
* initrd, move the initrd to the next MB
* boundary. */
if ((rec_loc > initrd_loc) &&
((initrd_loc + initrd_size) > rec_loc)) {
initrd_loc = _ALIGN((unsigned long)(zimage_size)
+ (2 << 20) - 1, (2 << 20));
memmove((void *)initrd_loc, &__ramdisk_begin,
initrd_size);
puts("initrd moved: "); puthex(initrd_loc);
puts(" "); puthex(initrd_loc + initrd_size);
puts("\n");
}
}
rec->tag = BI_FIRST;
rec->size = sizeof(struct bi_record);
rec = (struct bi_record *)((unsigned long)rec + rec->size);
if ( TotalMemory ) {
rec->tag = BI_MEMSIZE;
rec->data[0] = TotalMemory;
rec->size = sizeof(struct bi_record) + sizeof(unsigned long);
rec = (struct bi_record *)((unsigned long)rec + rec->size);
}
rec->tag = BI_CMD_LINE;
memcpy( (char *)rec->data, cmd_line, strlen(cmd_line)+1);
rec->size = sizeof(struct bi_record) + strlen(cmd_line) + 1;
rec = (struct bi_record *)((unsigned long)rec + rec->size);
if ( initrd_size ) {
rec->tag = BI_INITRD;
rec->data[0] = initrd_loc;
rec->data[1] = initrd_size;
rec->size = sizeof(struct bi_record) + 2 *
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);
puts("Now booting the kernel\n");
serial_close(com_port);
return (struct bi_record *)rec_loc;
}
static unsigned long __init
pcore_find_end_of_memory(void)
{
return mpc10x_get_mem_size(MPC10X_MEM_MAP_B);
}
