board_f: reserve noncached space below malloc area
Noncached area at present is being initialized to random space after malloc
area. It works in most the cases as it goes to stack area & stack is not
overwriting it being far from it.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
diff --git a/common/board_f.c b/common/board_f.c
index 31181a9..6867abc 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -467,12 +467,29 @@
return 0;
}
+#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;
+ debug("Reserving %dM for noncached_alloc() at: %08lx\n",
+ CONFIG_SYS_NONCACHED_MEMORY >> 20, gd->start_addr_sp);
+
+ return 0;
+}
+#endif
+
/* reserve memory for malloc() area */
static int reserve_malloc(void)
{
gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
debug("Reserving %dk for malloc() at: %08lx\n",
TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
+#ifdef CONFIG_SYS_NONCACHED_MEMORY
+ reserve_noncached();
+#endif
+
return 0;
}