switch-coreboot/lib/malloc.c
Ronald G. Minnich 53283b1e36 fix a stupid bug in malloc.
add debug printks. 

make dtc put 'root' as the first_node, instead of making the last node
be the first node .... much happier in linuxbios. 

sprintf is broken ... dammit. I hope someone will fix it. I've got about
another week of full-time I can spend on this and then I go back to part
time. So I'm going to need some help soon.

other fixups, and also, make the dts conform to the needs of the device
tree. So we have a domain0 and a device (0,0) that is the north. 

Mostly things are working, but we're STILL not getting any memory in the
LB tables from the north. The device tree is a bitch. 

Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@175 f3766cd6-281f-0410-b1cd-43a5c92072e9
2007-03-03 00:39:30 +00:00

76 lines
2.3 KiB
C

/*
* This file is part of the LinuxBIOS project.
*
* Copyright (C) 2007 Ronald G. Minnich <rminnich@gmail.com>
*
* 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; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
*/
/*
* Simple non-freeing malloc. There have been about a million versions of
* this but we need one with a known author. Almost every OS and bootloader
* has had this at some time or other.
*/
#include <stdlib.h>
#include <console/console.h>
#if 0
#define MALLOCDBG(x...)
#else
#define MALLOCDBG(x...) printk (BIOS_SPEW, x)
#endif
/* instead of ldscript magic, just declare an array. The array
* will consume no bytes in the image, and it won't run into trouble
* the way the V2 allocator could. We do not provide zero'd memory.
* note that the execute-in-place code in top of flash is not allowed to call malloc,
* since we can't link this in to it. The FLASH-based code should always be dead simple.
* (in fact, it's not clear we need malloc at all any more -- we're doing our best to
* remove all usage of it -- the only real users were elfboot and lzma, and we have
* removed its usage in elfboot, and will try to remove its usage in lzma).
*/
#define HEAPSIZE (256*1024)
static unsigned char heap[HEAPSIZE];
static unsigned char *free_mem_ptr = heap;
static unsigned long freebytes = HEAPSIZE;
void *malloc(size_t size)
{
void *p;
MALLOCDBG("%s Enter, size %d, free_mem_ptr %p\n", __FUNCTION__, size,
free_mem_ptr);
if (size > freebytes) {
printk(BIOS_ERR, "OUT OF MEMORY for alloc of %d bytes\n", size);
die("OUT OF MEMORY\n");
}
size = (size + 3) & (~3); /* Align */
p = free_mem_ptr;
free_mem_ptr += size;
freebytes -= size;
MALLOCDBG("malloc 0x%08lx\n", (unsigned long)p);
return p;
}
void free(void *where)
{
/* Don't care */
}