driver: tee: optee: implement OCALLs

arch/arm/boot/dts/stm32mp151.dtsi

@@ -28,6 +28,14 @@
 		method = "smc";
 	};
 
+	firmware {
+		optee: optee {
+			compatible = "linaro,optee-tz";
+			method = "smc";
+			status = "disabled";
+		};
+	};
+
 	intc: interrupt-controller@a0021000 {
 		compatible = "arm,cortex-a7-gic";
 		#interrupt-cells = <3>;

arch/arm/boot/dts/stm32mp157c-dk2.dts

@@ -16,6 +16,13 @@
 	model = "STMicroelectronics STM32MP157C-DK2 Discovery Board";
 	compatible = "st,stm32mp157c-dk2", "st,stm32mp157";
 
+	reserved-memory {
+		optee_memory: optee@0xde000000 {
+			reg = <0xde000000 0x02000000>;
+			no-map;
+		};
+	};
+
 	aliases {
 		ethernet0 = &ethernet0;
 		serial0 = &uart4;
@@ -95,3 +102,7 @@
 	pinctrl-2 = <&usart2_idle_pins_c>;
 	status = "disabled";
 };
+
+&optee {
+	status = "okay";
+};

arch/arm/boot/dts/stm32mp157c-ev1.dts

@@ -372,3 +372,7 @@
 &usbphyc {
 	status = "okay";
 };
+
+&optee {
+	status = "okay";
+};

arch/arm64/boot/dts/arm/foundation-v8.dtsi

@@ -22,11 +22,14 @@
 
 	aliases {
 		serial0 = &v2m_serial0;
-		serial1 = &v2m_serial1;
 		serial2 = &v2m_serial2;
 		serial3 = &v2m_serial3;
 	};
 
+	ftpm {
+	        compatible = "microsoft,ftpm";
+	};
+
 	cpus {
 		#address-cells = <2>;
 		#size-cells = <0>;
@@ -67,6 +70,17 @@
 		      <0x00000008 0x80000000 0 0x80000000>;
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		optee@0x83000000 {
+			reg = <0x00000000 0x83000000 0 0x01000000>;
+			no-map;
+		};
+	};
+
 	timer {
 		compatible = "arm,armv8-timer";
 		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
@@ -197,14 +211,6 @@
 				clock-names = "uartclk", "apb_pclk";
 			};
 
-			v2m_serial1: serial@a0000 {
-				compatible = "arm,pl011", "arm,primecell";
-				reg = <0x0a0000 0x1000>;
-				interrupts = <6>;
-				clocks = <&v2m_clk24mhz>, <&v2m_clk24mhz>;
-				clock-names = "uartclk", "apb_pclk";
-			};
-
 			v2m_serial2: serial@b0000 {
 				compatible = "arm,pl011", "arm,primecell";
 				reg = <0x0b0000 0x1000>;
@@ -228,4 +234,12 @@
 			};
 		};
 	};
+
+	firmware {
+		optee {
+			compatible = "linaro,optee-tz";
+			method = "smc";
+		};
+	};
+
 };

arch/arm64/boot/dts/arm/juno-base.dtsi

@@ -800,6 +800,18 @@
 		      <0x00000008 0x80000000 0x1 0x80000000>;
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		/* Shared memory between secure and non-secure world */
+		optee@0xfee00000 {
+			reg = <0x00000000 0xfee00000 0 0x00200000>;
+			no-map;
+		};
+	};
+
 	bus@8000000 {
 		compatible = "simple-bus";
 		#address-cells = <2>;
@@ -837,4 +849,11 @@
 		interrupt-map-mask = <0 0>;
 		interrupt-map = <0 0 &gic 0 GIC_SPI 168 IRQ_TYPE_LEVEL_HIGH>;
 	};
+
+	firmware {
+		optee {
+			compatible = "linaro,optee-tz";
+			method = "smc";
+		};
+	};
 };

arch/arm64/boot/dts/hisilicon/hi3798cv200-poplar.dts

@@ -6,6 +6,7 @@
  */
 
 /dts-v1/;
+/memreserve/ 0x00000000 0x04080000;
 
 #include <dt-bindings/gpio/gpio.h>
 #include "hi3798cv200.dtsi"
@@ -70,6 +71,13 @@
 		gpio = <&gpio6 7 0>;
 		enable-active-high;
 	};
+
+	firmware {
+		optee {
+			compatible = "linaro,optee-tz";
+			method = "smc";
+		};
+	};
 };
 
 &ehci {

arch/arm64/boot/dts/mediatek/mt8173-evb.dts

@@ -60,6 +60,13 @@
 		gpio = <&pio 9 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
 	};
+
+	firmware {
+		optee {
+			compatible = "linaro,optee-tz";
+			method = "smc";
+		};
+	};
 };
 
 &cec {

arch/arm64/boot/dts/mediatek/mt8173.dtsi

@@ -468,15 +468,6 @@
 			reg = <0 0x10007000 0 0x100>;
 		};
 
-		timer: timer@10008000 {
-			compatible = "mediatek,mt8173-timer",
-				     "mediatek,mt6577-timer";
-			reg = <0 0x10008000 0 0x1000>;
-			interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_LOW>;
-			clocks = <&infracfg CLK_INFRA_CLK_13M>,
-				 <&topckgen CLK_TOP_RTC_SEL>;
-		};
-
 		pwrap: pwrap@1000d000 {
 			compatible = "mediatek,mt8173-pwrap";
 			reg = <0 0x1000d000 0 0x1000>;

drivers/staging/android/ion/Kconfig

@@ -25,3 +25,35 @@ config ION_CMA_HEAP
 	  Choose this option to enable CMA heaps with Ion. This heap is backed
 	  by the Contiguous Memory Allocator (CMA). If your system has these
 	  regions, you should say Y here.
+
+config ION_UNMAPPED_HEAP
+	bool "ION unmapped heap support"
+	depends on ION && (ARM || ARM64)
+	help
+	  Choose this option to enable UNMAPPED heaps with Ion. This heap is
+	  backed in specific memory pools, carveout from the Linux memory.
+	  Unless you know your system has these regions, you should say N here.
+
+config ION_DUMMY_UNMAPPED_HEAP
+	bool "ION dummy driver define an ION unmapped heap"
+	depends on ION_UNMAPPED_HEAP
+	help
+	  Dummy ION driver will create a unmapped heap from physical
+	  location provided through CONFIG_ION_DUMMY_UNMAPPED_BASE and
+	  CONFIG_ION_DUMMY_UNMAPPED_SIZE.
+
+config ION_DUMMY_UNMAPPED_BASE
+	hex "Physical base address of the ION unmapped heap"
+	depends on ION_DUMMY_UNMAPPED_HEAP
+	default 0
+	help
+	  Allows one the statically define an unmapped heap from the
+	  ION dummy driver to exercice unamped heaps buffer managment.
+
+config ION_DUMMY_UNMAPPED_SIZE
+	hex "Physical byte size of the ION unmapped heap"
+	depends on ION_DUMMY_UNMAPPED_HEAP
+	default 0
+	help
+	  Allows one the statically define an unmapped heap from the
+	  ION dummy driver to exercice unamped heaps buffer managment.

drivers/staging/android/ion/Makefile

@@ -2,3 +2,4 @@
 obj-$(CONFIG_ION) += ion.o ion_heap.o
 obj-$(CONFIG_ION_SYSTEM_HEAP) += ion_system_heap.o ion_page_pool.o
 obj-$(CONFIG_ION_CMA_HEAP) += ion_cma_heap.o
+obj-$(CONFIG_ION_UNMAPPED_HEAP) += ion_unmapped_heap.o

drivers/staging/android/ion/ion.c

@@ -137,7 +137,8 @@ static void ion_buffer_kmap_put(struct ion_buffer *buffer)
 	}
 }
 
-static struct sg_table *dup_sg_table(struct sg_table *table)
+static struct sg_table *dup_sg_table(struct sg_table *table,
+				     bool preserve_dma_address)
 {
 	struct sg_table *new_table;
 	int ret, i;
@@ -156,7 +157,8 @@ static struct sg_table *dup_sg_table(struct sg_table *table)
 	new_sg = new_table->sgl;
 	for_each_sgtable_sg(table, sg, i) {
 		memcpy(new_sg, sg, sizeof(*sg));
-		new_sg->dma_address = 0;
+		if (!preserve_dma_address)
+			new_sg->dma_address = 0;
 		new_sg = sg_next(new_sg);
 	}
 
@@ -173,6 +175,7 @@ struct ion_dma_buf_attachment {
 	struct device *dev;
 	struct sg_table *table;
 	struct list_head list;
+	bool no_map;
 };
 
 static int ion_dma_buf_attach(struct dma_buf *dmabuf,
@@ -186,7 +189,10 @@ static int ion_dma_buf_attach(struct dma_buf *dmabuf,
 	if (!a)
 		return -ENOMEM;
 
-	table = dup_sg_table(buffer->sg_table);
+	if (buffer->heap->type == ION_HEAP_TYPE_UNMAPPED)
+		a->no_map = true;
+
+	table = dup_sg_table(buffer->sg_table, a->no_map);
 	if (IS_ERR(table)) {
 		kfree(a);
 		return -ENOMEM;
@@ -228,6 +234,9 @@ static struct sg_table *ion_map_dma_buf(struct dma_buf_attachment *attachment,
 
 	table = a->table;
 
+	if (a->no_map)
+		return table;
+
 	ret = dma_map_sgtable(attachment->dev, table, direction, 0);
 	if (ret)
 		return ERR_PTR(ret);
@@ -239,6 +248,11 @@ static void ion_unmap_dma_buf(struct dma_buf_attachment *attachment,
 			      struct sg_table *table,
 			      enum dma_data_direction direction)
 {
+	struct ion_dma_buf_attachment *a = attachment->priv;
+
+	if (a->no_map)
+		return;
+
 	dma_unmap_sgtable(attachment->dev, table, direction, 0);
 }