phys_addr_t start, end;
size_t size;
+ /* If this calculation changes, update board_f.c:reserve_noncached() */
end = ALIGN(mem_malloc_start, MMU_SECTION_SIZE) - MMU_SECTION_SIZE;
size = ALIGN(CONFIG_SYS_NONCACHED_MEMORY, MMU_SECTION_SIZE);
start = end - size;
#ifdef CONFIG_SYS_NONCACHED_MEMORY
static int reserve_noncached(void)
{
- /* round down to SECTION SIZE (typicaly 1MB) limit */
- gd->start_addr_sp &= ~(MMU_SECTION_SIZE - 1);
- gd->start_addr_sp -= CONFIG_SYS_NONCACHED_MEMORY;
+ /*
+ * The value of gd->start_addr_sp must match the value of malloc_start
+ * calculated in boatrd_f.c:initr_malloc(), which is passed to
+ * board_r.c:mem_malloc_init() and then used by
+ * cache.c:noncached_init()
+ *
+ * These calculations must match the code in cache.c:noncached_init()
+ */
+ gd->start_addr_sp = ALIGN(gd->start_addr_sp, MMU_SECTION_SIZE) -
+ MMU_SECTION_SIZE;
+ gd->start_addr_sp -= ALIGN(CONFIG_SYS_NONCACHED_MEMORY,
+ MMU_SECTION_SIZE);
debug("Reserving %dM for noncached_alloc() at: %08lx\n",
CONFIG_SYS_NONCACHED_MEMORY >> 20, gd->start_addr_sp);
gd->malloc_ptr / 1024);
#endif
/* The malloc area is immediately below the monitor copy in DRAM */
+ /*
+ * This value MUST match the value of gd->start_addr_sp in board_f.c:
+ * reserve_noncached().
+ */
malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
TOTAL_MALLOC_LEN);