[coreboot] [GSoC] Re: malloc.c problems of option rom
ron minnich
rminnich at gmail.com
Sun Aug 2 17:39:49 CEST 2009
On Sun, Aug 2, 2009 at 6:37 AM, Jason Wang<wangqingpei at gmail.com> wrote:
> updated the new, which changed the display value
> static void setup(void)
> {
> int size = (unsigned int)(&_eheap - &_heap) - HDRSIZE;
> *((hdrtype_t *) hstart) = FREE_BLOCK(size);
> // printf("%s memory size:0x%x,begin:0x%x end:0x%x,
> hstart:0x%x\n",__func__,size,(unsigned int)&_heap,(unsigned
> int)&_eheap,(unsigned int )*((hdrtype_t *) hstart));
>
>
> }
>
> static void *alloc(int len)
> {
> hdrtype_t header;
> void *ptr = hstart;
> printf("%s %d length:0x%x,ptr=0x%x \n",__func__,__LINE__,len,(unsigned
> int )ptr);
> printf("%s %d memory begin:0x%x end:0x%x,
> hstart:0x%x\n",__func__,__LINE__,(unsigned int)&_heap,(unsigned
> int)&_eheap,(unsigned int ) hstart);
> /* Align the size. */
> len = (len + 3) & ~3;
>
> if (!len || len > 0xffffff)
> return (void *)NULL;
> // while(1);
>
> /* Make sure the region is setup correctly. */
> if (!HAS_MAGIC(*((hdrtype_t *) ptr))){
> setup();
> }
> if (!HAS_MAGIC(*((hdrtype_t *) ptr))){
> printf("set up error,*ptr=0x%x\n",(unsigned int)*((hdrtype_t *) ptr));
> }
>
> /* Find some free space. */
> do {
> header = *((hdrtype_t *) ptr);
> int size = SIZE(header);
>
> if (!HAS_MAGIC(header) || size == 0) {
> printf("memory allocator panic!!! the size=0x%x.
> header=0x%x\n",size,(unsigned int)header);
> halt();
> }
>
> if (header & FLAG_FREE) {
> if (len <= size) {
> void *nptr = ptr + (HDRSIZE + len);
> int nsize = size - (HDRSIZE + len);
>
> /* If there is still room in this block,
> * then mark it as such otherwise account
> * the whole space for that block.
> */
>
> if (nsize > 0) {
> /* Mark the block as used. */
> *((hdrtype_t *) ptr) = USED_BLOCK(len);
>
> /* Create a new free block. */
> *((hdrtype_t *) nptr) =
> FREE_BLOCK(nsize);
> } else {
> /* Mark the block as used. */
> *((hdrtype_t *) ptr) = USED_BLOCK(size);
> }
>
> return (void *)(ptr + HDRSIZE);
> }
> }
>
> ptr += HDRSIZE + size;
>
> } while (ptr < hend);
>
> /* Nothing available. */
> return (void *)NULL;
> }
> result log:
> Running option rom at ce00:0003
> hello, initialize_usb
> 00:13.0 4387:1002.0 OHCI controller
> Not supported.
> 00:13.1 4388:1002.1 OHCI controller
> Not supported.
> 00:13.2 4389:1002.2 OHCI controller
> Not supported.
> 00:13.3 438a:1002.3 OHCI controller
> Not supported.
> 00:13.4 438b:1002.4 OHCI controller
> Not supported.
> 00:13.5 4386:1002.5 EHCI controller
> Not supported.
> 00:05.0 3038:1106.0 UHCI controller
> alloc 82 length:0x238,ptr=0x3077e0
> alloc 83 memory begin:0x77e0 end:0x577e0, hstart:0x300000
> set up error,*ptr=0xa2c0e2cc
> memory allocator panic!!! the size=0xc0e2cc. header=0xa2c0e2cc
You're trying to allocate 1.25 Mbytes of memory? Why is that?
ron
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