Re: [U-Boot] [PATCH v6] [RFC] early_malloc for DM added.

On Sep 23, 2012 8:09 AM, "Tomas Hlavacek" tmshlvck@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 tmshlvck@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