[U-Boot] [PATCH 1/2] rockchip: rk3328: set DDR as non-secure in SPL

[Matwey V. Kornilov]

From: Kever Yang <kever.yang at rock-chips.com>

Set DDR as non-secure so that MMC DMA can access.

Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
[cherry picked from https://github.com/rockchip-linux/u-boot/commit/bfe741ab9eb4f97371a4e6c24185419d57a3a75f and https://github.com/rockchip-linux/u-boot/commit/73d952acc8cc1ddad6652ba71895d9fe928c1e4b with minor modifications]
Signed-off-by: Matwey V. Kornilov <matwey.kornilov at gmail.com>
---
 arch/arm/mach-rockchip/rk3328/rk3328.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/mach-rockchip/rk3328/rk3328.c b/arch/arm/mach-rockchip/rk3328/rk3328.c
index 592f287613..c2448d7273 100644
--- a/arch/arm/mach-rockchip/rk3328/rk3328.c
+++ b/arch/arm/mach-rockchip/rk3328/rk3328.c
@@ -16,6 +16,7 @@ DECLARE_GLOBAL_DATA_PTR;
 #define CRU_BASE		0xFF440000
 #define GRF_BASE		0xFF100000
 #define UART2_BASE		0xFF130000
+#define FW_DDR_CON_REG		0xFF7C0040
 
 const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
 	[BROM_BOOTSOURCE_EMMC] = "rksdmmc at ff520000",
@@ -46,8 +47,12 @@ struct mm_region *mem_map = rk3328_mem_map;
 
 int arch_cpu_init(void)
 {
+#ifdef CONFIG_SPL_BUILD
 	/* We do some SoC one time setting here. */
 
+	/* Disable the ddr secure region setting to make it non-secure */
+	rk_setreg(FW_DDR_CON_REG, 0x200);
+#endif
 	return 0;
 }
 
-- 
2.16.4