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 --- Changes for v3: - collect Kever r-b Changes for v2: - none
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