eb59636cc5
Add a memalign function and have malloc use it. Also, change the default alignment for malloc to u64-aligned. Change-Id: I0788637008f5cb5ac801d8bbdc430ca992c98e81 Signed-off-by: Ron Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/887 Tested-by: build bot (Jenkins) Reviewed-by: Mathias Krause <minipli@googlemail.com>
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
#include <stdlib.h>
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#include <console/console.h>
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#if CONFIG_DEBUG_MALLOC
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#define MALLOCDBG(x...) printk(BIOS_SPEW, x)
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#else
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#define MALLOCDBG(x...)
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#endif
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extern unsigned char _heap, _eheap;
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static void *free_mem_ptr = &_heap; /* Start of heap */
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static void *free_mem_end_ptr = &_eheap; /* End of heap */
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/* We don't restrict the boundary. This is firmware,
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* you are supposed to know what you are doing.
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*/
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void *memalign(size_t boundary, size_t size)
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{
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void *p;
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MALLOCDBG("%s Enter, boundary %ld, size %ld, free_mem_ptr %p\n",
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__func__, boundary, size, free_mem_ptr);
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/* Overzealous linker check */
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if (free_mem_ptr <= 0)
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die("Error! memalign: Free_mem_ptr <= 0");
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free_mem_ptr = (void *)ALIGN((unsigned long)free_mem_ptr, boundary);
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p = free_mem_ptr;
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free_mem_ptr += size;
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if (free_mem_ptr >= free_mem_end_ptr)
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die("Error! memalign: Out of memory (free_mem_ptr >= free_mem_end_ptr)");
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MALLOCDBG("memalign %p\n", p);
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return p;
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}
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void *malloc(size_t size)
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{
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return memalign(sizeof(u64), size);
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}
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void free(void *where)
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{
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/* Don't care */
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MALLOCDBG("free %p\n", where);
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}
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