Unsecure the dram area so that MMC, USB, and SFC controllers can able to read data from dram.
Signed-off-by: Jason Zhu <[email protected]> Signed-off-by: Jagan Teki <[email protected]> --- arch/arm/mach-rockchip/rv1126/rv1126.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/arm/mach-rockchip/rv1126/rv1126.c b/arch/arm/mach-rockchip/rv1126/rv1126.c index 91554c98b6..f4dc119d40 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 +60,17 @@ void board_debug_uart_init(void) #ifndef CONFIG_TPL_BUILD int arch_cpu_init(void) { +#ifdef CONFIG_SPL_BUILD + /** + * 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) + */ + writel(0, FIREWALL_APB_BASE + FW_DDR_CON_REG); +#endif + return 0; } #endif -- 2.25.1
