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 --- Changes in v2: added blank line before return
common/board_f.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/common/board_f.c b/common/board_f.c index 59745d5..58529d2 100644 --- a/common/board_f.c +++ b/common/board_f.c @@ -439,12 +439,29 @@ static int reserve_uboot(void) 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; }