ARM: exynos: add exynos4412 TZASC init

we initialise the address space controller to allow
access by both secure and non-secure worlds to the whole
RAM.

Author: fourkbomb

arch/arm/mach-exynos/dmc_init_exynos4412.c

@@ -9,6 +9,21 @@
 #include "common_setup.h"
 #include "exynos4412_setup.h"
 
+#define NR_TZASC_BANKS 4
+
+/* Allow non-secure and secure access to all memory */
+#define RA0_VAL 0xf0000000
+
+static void tzasc_init(void) {
+	unsigned int start = samsung_get_base_dmc_tzasc();
+	unsigned int end = start + (DMC_OFFSET * (NR_TZASC_BANKS - 1));
+
+	for (; start <= end; start += DMC_OFFSET) {
+		struct exynos4412_tzasc *asc = (struct exynos4412_tzasc *)start;
+		writel(RA0_VAL, &asc->region_attributes_0);
+	}
+}
+
 void mem_ctrl_init(int reset)
 {
 	struct exynos4_dmc *dmc = (struct exynos4_dmc *)samsung_get_base_dmc_ctrl();
@@ -124,6 +139,8 @@ void mem_ctrl_init(int reset)
 	writel(DMC_MEMCONTROL, &dmc->memcontrol);
 	writel(DMC_MEMCONTROL, &dmc1->memcontrol);
 
+	tzasc_init();
+
 }
 
 

arch/arm/mach-exynos/include/mach/cpu.h

@@ -70,6 +70,7 @@
 #define EXYNOS4X12_TZPC_BASE		0x10110000
 #define EXYNOS4X12_DMC_CTRL_BASE	0x10600000
 #define EXYNOS4X12_GPIO_PART4_BASE	0x106E0000
+#define EXYNOS4X12_DMC_TZASC_BASE	0x10700000
 #define EXYNOS4X12_ACE_SFR_BASE		0x10830000
 #define EXYNOS4X12_GPIO_PART2_BASE	0x11000000
 #define EXYNOS4X12_GPIO_PART2_0		0x11000000
@@ -101,7 +102,6 @@
 #define EXYNOS4X12_AUDIOSS_BASE		DEVICE_NOT_AVAILABLE
 #define EXYNOS4X12_USB_HOST_XHCI_BASE	DEVICE_NOT_AVAILABLE
 #define EXYNOS4X12_USB3PHY_BASE		DEVICE_NOT_AVAILABLE
-#define EXYNOS4X12_DMC_TZASC_BASE	DEVICE_NOT_AVAILABLE
 
 /* EXYNOS5 */
 #define EXYNOS5_I2C_SPACING		0x10000

arch/arm/mach-exynos/include/mach/dmc.h

@@ -419,6 +419,25 @@ struct exynos5420_phy_control {
 	unsigned int phy_con42;
 };
 
+struct exynos4412_tzasc {
+	unsigned char res1[0x100];
+	unsigned int region_setup_low_0; // 100
+	unsigned int region_setup_high_0; // 104
+	unsigned int region_attributes_0; // 108
+	unsigned int res2; // 10c
+	unsigned int region_setup_low_1; // 110
+	unsigned int region_setup_high_1; // 114
+	unsigned int region_setup_attributes_1; // 118
+	unsigned int res3;
+	unsigned int region_setup_low_2; // 120
+	unsigned int region_setup_high_2; // 124
+	unsigned int region_setup_attributes_2; // 128
+	unsigned int res4;
+	unsigned int region_setup_low_3; // 130
+	unsigned int region_setup_high_3; // 134
+	unsigned int region_attributes_3; // 138
+};
+
 struct exynos5420_tzasc {
 	unsigned char res1[0xf00];
 	unsigned int membaseconfig0;