Disable the ddr secure region setting in SPL and the ddr memory
becomes non-secure, every one can access it. the trust firmware
like OPTEE should have the correct setting for it after SPL if
there is one.
Signed-off-by: Kever Yang <kever.y...@rock-chips.com>
---
Changes in v2:
- add comment for the change and update the commit message
arch/arm/mach-rockchip/rk322x-board-spl.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm/mach-rockchip/rk322x-board-spl.c
b/arch/arm/mach-rockchip/rk322x-board-spl.c
index 15216c7..4ddb8ba 100644
--- a/arch/arm/mach-rockchip/rk322x-board-spl.c
+++ b/arch/arm/mach-rockchip/rk322x-board-spl.c
@@ -41,6 +41,8 @@ static struct rk322x_grf * const grf = (void *)GRF_BASE;
CON_IOMUX_UART2SEL_MASK,
CON_IOMUX_UART2SEL_21 << CON_IOMUX_UART2SEL_SHIFT);
}
+
+#define SGRF_DDR_CON0 0x10150000
void board_init_f(ulong dummy)
{
struct udevice *dev;
@@ -71,6 +73,8 @@ void board_init_f(ulong dummy)
return;
}
+ /* Disable the ddr secure region setting to make it non-secure */
+ rk_clrreg(SGRF_DDR_CON0, 0x4000);
#if defined(CONFIG_ROCKCHIP_SPL_BACK_TO_BROM) &&
!defined(CONFIG_SPL_BOARD_INIT)
back_to_bootrom();
#endif
--
1.9.1
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