From: Patrice Chotard <patrice.chot...@st.com>
This patch implements the write_sec callback that handle PL310
secure registers writes.
This callback is just a stub for now, to avoid system crash.
Later, it could handle SMC calls so that TZ handles the needed writes.
Signed-off-by: Patrice Chotard <patrice.chot...@st.com>
---
arch/arm/mach-sti/board-dt.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/arm/mach-sti/board-dt.c b/arch/arm/mach-sti/board-dt.c
index cfee0ef..e04cd1b 100644
--- a/arch/arm/mach-sti/board-dt.c
+++ b/arch/arm/mach-sti/board-dt.c
@@ -23,6 +23,14 @@ static const char *const stih41x_dt_match[] __initconst = {
NULL
};
+static void sti_l2_write_sec(unsigned long val, unsigned reg)
+{
+ /*
+ * We can't write to secure registers as we are in non-secure
+ * mode, until we have some SMI service available.
+ */
+}
+
DT_MACHINE_START(STM, "STi SoC with Flattened Device Tree")
.dt_compat = stih41x_dt_match,
.l2c_aux_val = L2C_AUX_CTRL_SHARED_OVERRIDE |
@@ -31,4 +39,5 @@ DT_MACHINE_START(STM, "STi SoC with Flattened Device Tree")
L2C_AUX_CTRL_WAY_SIZE(4),
.l2c_aux_mask = 0xc0000fff,
.smp = smp_ops(sti_smp_ops),
+ .l2c_write_sec = sti_l2_write_sec,
MACHINE_END
--
1.9.1
