erebion/coreboot
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Fix cosmetic issues and add some Doxygen comments (trivial).

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Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@277 f3766cd6-281f-0410-b1cd-43a5c92072e9
This commit is contained in:
Uwe Hermann 2007-04-12 18:35:11 +00:00
commit 5303acd696
1 changed files with 29 additions and 13 deletions
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42
lib/malloc.c
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@ -30,30 +30,40 @@
#if 0
#define MALLOCDBG(x...)
#else
#define MALLOCDBG(x...) printk (BIOS_SPEW, x)
#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).
/*
* 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 (XIP) 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)
#define HEAPSIZE (256 * 1024)
static unsigned char heap[HEAPSIZE];
static unsigned char *free_mem_ptr = heap;
static unsigned long freebytes = HEAPSIZE;
/**
* Allocate 'size' bytes of memory. The memory is not zero'd.
* If not enough memory is available, just die.
*
* @param size The number of bytes to allocate.
* @return A pointer to the allocated memory.
*/
void *malloc(size_t size)
{
void *p;
MALLOCDBG("%s Enter, size %d, free_mem_ptr %p\n",
__FUNCTION__, size, free_mem_ptr);
MALLOCDBG("%s Enter, size %d, free_mem_ptr %p\n",
__FUNCTION__, size, free_mem_ptr);
if (size > freebytes) {
die("Out of memory.\n");
@ -70,7 +80,13 @@ void *malloc(size_t size)
return p;
}
/**
* Free the specified memory area.
* This is a no-op, we don't care about freeing memory.
*
* @param where A pointer to the memory area to free.
*/
void free(void *where)
{
/* Don't care */
/* Don't care. */
}