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board: get ao_register_base from dts [1/1]

Browse Source 
PD#SWPL-3203

Problem:
android P can not boot up on G12A with 32bit kernel

Solution:
get register base from dts

Verify:
Local

Change-Id: Ifb3163a867c1c8ed4f8c344d064cead216334773
Signed-off-by: Pengguang Zhu <pengguang.zhu@amlogic.com>
This commit is contained in:
Pengguang Zhu
2018-10-12 19:46:00 +08:00
committed by Dongjin Kim
parent be69aacb33
commit f156cbf066
1 changed files with 16 additions and 5 deletions
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21
arch/arm/mach-meson/meson-secure.c
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@@ -24,6 +24,8 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
@@ -45,7 +47,7 @@
#define TZDBG(fmt, ...)
#endif
#define MESON_SECURE_FLAG_REG 0xC11081F0
#define MESON_SECURE_FLAG_REG_OFFS 0x81F0
#define MESON_SECURE_FLAG_VALUE_DISABLED 0x0
#define MESON_SECURE_FLAG_VALUE_ENABLED 0x1
#define MESON_SECURE_FLAG_VALUE_INVALID 0xFFFFFFFF
@@ -62,14 +64,23 @@ static void __iomem *secure_flag_base;
bool meson_secure_enabled(void)
{
bool ret = false;
struct device_node *np;
if (secure_flag == MESON_SECURE_FLAG_VALUE_INVALID) {
secure_flag_base = ioremap(MESON_SECURE_FLAG_REG, 4);
if (!secure_flag_base) {
TZDBG("iomap(0x%x) error.", MESON_SECURE_FLAG_REG);
np = of_find_compatible_node(NULL, NULL, "amlogic, iomap");
if (!np) {
TZDBG("find iomap node fail.");
return false;
}
secure_flag = readl_relaxed(secure_flag_base);
secure_flag_base = of_iomap(np, 0);
if (!secure_flag_base) {
TZDBG("of_iomap error.");
return false;
}
secure_flag = readl_relaxed(secure_flag_base +
MESON_SECURE_FLAG_REG_OFFS);
}
TZDBG("secure_flag: 0x%x\n", secure_flag);