From c6154677c81ea9480a90d8176527d877a3e1b368 Mon Sep 17 00:00:00 2001
From: Jagan Teki <jagan@edgeble.ai>
Date: Wed, 14 Dec 2022 23:21:06 +0530
Subject: [PATCH] arm: rockchip: rv1126: Set dram area unsecure for SPL
Unsecure the dram area so that MMC, USB, and SFC controllers
can able to read data from dram.
Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>
Signed-off-by: Jagan Teki <jagan@edgeble.ai>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
---
arch/arm/mach-rockchip/rv1126/rv1126.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/arm/mach-rockchip/rv1126/rv1126.c b/arch/arm/mach-rockchip/rv1126/rv1126.c
index 91554c98b6..b9b898756f 100644
--- a/arch/arm/mach-rockchip/rv1126/rv1126.c
+++ b/arch/arm/mach-rockchip/rv1126/rv1126.c
@@ -10,6 +10,8 @@
#include <asm/arch-rockchip/hardware.h>
#include <asm/arch-rockchip/grf_rv1126.h>
+#define FIREWALL_APB_BASE 0xffa60000
+#define FW_DDR_CON_REG 0x80
#define GRF_BASE 0xFE000000
const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
@@ -58,6 +60,16 @@ void board_debug_uart_init(void)
#ifndef CONFIG_TPL_BUILD
int arch_cpu_init(void)
{
+ /**
+ * Set dram area unsecure in spl
+ *
+ * usb & mmc & sfc controllers can read data to dram
+ * since they are unsecure.
+ * (Note: only secure-world can access this register)
+ */
+ if (IS_ENABLED(CONFIG_SPL_BUILD))
+ writel(0, FIREWALL_APB_BASE + FW_DDR_CON_REG);
+
return 0;
}
#endif
--
2.39.5