On Sep 23, 2012 8:09 AM, "Tomas Hlavacek" <tmshl...@gmail.com> wrote:
>
> early_malloc for DM with support for more heaps and lightweight
> first heap in the same memory as an early stack.
>
> Adaptation layer for seamless calling of early_malloc or dlmalloc from
> DM based on init stage added (dmmalloc() and related functions).
>
> Signed-off-by: Tomas Hlavacek <tmshl...@gmail.com>
> ---
[snip]
> +#ifdef CONFIG_SYS_EARLY_MALLOC
> +__weak struct early_heap_header *early_brk(size_t size)
> +{
> + struct early_heap_header *h =
> + (struct early_heap_header *)CONFIG_SYS_EARLY_HEAP_ADDR;
> + struct early_heap_header *ehp = gd->early_heap_first;
> +
> + while (ehp != NULL) {
> + if (ehp == h)
> + return NULL;
> +
> + ehp = ehp->next_early_heap;
> + }
if (g->early_heap_first == NULL)
h = CONFIF_SYS_EARLY_HEAP_ADDR);
else
return NULL;
> +
> + h->free_space_pointer = (void *)(roundup(
> + (phys_addr_t)CONFIG_SYS_EARLY_HEAP_ADDR +
> + sizeof(struct early_heap_header),
> + sizeof(phys_addr_t)));
> + h->free_bytes = size - roundup(sizeof(struct early_heap_header),
> + sizeof(phys_addr_t));
> + h->next_early_heap = NULL;
> +
> + return h;
> +}
Regards,
Graeme
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