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rockchip; rk3399: disable SRAM security region

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Some host like SD and eMMC may use DMA to transter data to SRAM,
set memory to non-secure to make sure the address can be accessed.

The security of SRAM in OS suppose to initialized in ATF bl31, and
the SPL is before the bl31.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Kever Yang 2017-05-05 11:01:43 +08:00 committed by Simon Glass
parent 91ff05275a
commit c4a921513a
1 changed files with 5 additions and 3 deletions
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8
arch/arm/mach-rockchip/rk3399-board-spl.c
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@ -156,8 +156,6 @@ void secure_timer_init(void)
writel(TIMER_EN | TIMER_FMODE, TIMER_CHN10_BASE + TIMER_CONTROL_REG);
}
#define SGRF_DDR_RGN_CON16 0xff330040
void board_debug_uart_init(void)
{
#include <asm/arch/grf_rk3399.h>
@ -188,6 +186,8 @@ void board_debug_uart_init(void)
}
#define GRF_EMMCCORE_CON11 0xff77f02c
#define SGRF_DDR_RGN_CON16 0xff330040
#define SGRF_SLV_SECURE_CON4 0xff33e3d0
void board_init_f(ulong dummy)
{
struct udevice *pinctrl;
@ -207,6 +207,7 @@ void board_init_f(ulong dummy)
debug_uart_init();
printascii("U-Boot SPL board init");
#endif
/* Emmc clock generator: disable the clock multipilier */
rk_clrreg(GRF_EMMCCORE_CON11, 0x0ff);
@ -217,7 +218,7 @@ void board_init_f(ulong dummy)
}
/*
* Disable DDR security regions.
* Disable DDR and SRAM security regions.
*
* As we are entered from the BootROM, the region from
* 0x0 through 0xfffff (i.e. the first MB of memory) will
@ -226,6 +227,7 @@ void board_init_f(ulong dummy)
* located in this range.
*/
rk_clrsetreg(SGRF_DDR_RGN_CON16, 0x1FF, 0);
rk_clrreg(SGRF_SLV_SECURE_CON4, 0x2000);
secure_timer_init();