Add a driver that describes the Secure96 mezzanine board, and exposes
both the information required to describe it to the OS using a DT overlay,
and to describe it to UEFI itself.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
Platform/NinetySixBoards/Secure96Dxe/Secure96.dts | 76 +++++++
Platform/NinetySixBoards/Secure96Dxe/Secure96.h | 26 +++
Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.c | 211 ++++++++++++++++++++
Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.inf | 67 +++++++
4 files changed, 380 insertions(+)
diff --git a/Platform/NinetySixBoards/Secure96Dxe/Secure96.dts b/Platform/NinetySixBoards/Secure96Dxe/Secure96.dts
new file mode 100644
index 000000000000..08f59978c06f
--- /dev/null
+++ b/Platform/NinetySixBoards/Secure96Dxe/Secure96.dts
@@ -0,0 +1,76 @@
+/** @file
+ * Copyright (c) 2018, Linaro Limited. All rights reserved.
+ *
+ * This program and the accompanying materials are licensed and made
+ * available under the terms and conditions of the BSD License which
+ * accompanies this distribution. The full text of the license may be
+ * found at http://opensource.org/licenses/bsd-license.php
+ *
+ * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
+ * IMPLIED.
+ */
+
+#include "Secure96.h"
+
+#define GPIO_PARENT_PLACEHOLDER_PHANDLE 0x0
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ fragment@0 {
+ target-path = "I2C_PARENT_PLACEHOLDER_STRING";
+ __overlay__ {
+ ATSHA204A_DT_NODENAME {
+ compatible = "atmel,atsha204a";
+ reg = <ATSHA204A_SLAVE_ADDRESS>;
+ };
+ ATECC508A_DT_NODENAME {
+ compatible = "atmel,atecc508a";
+ reg = <ATECC508A_SLAVE_ADDRESS>;
+ };
+ };
+ };
+
+ fragment@1 {
+ target-path = "SPI_PARENT_PLACEHOLDER_STRING";
+ __overlay__ {
+ INFINEON_SLB9670_DT_NODENAME {
+ compatible = "infineon,slb9670";
+ reg = <INFINEON_SLB9670_SPI_CS>;
+ spi-max-frequency = <22500000>;
+ };
+ };
+ };
+
+ fragment@2 {
+ target-path = "/";
+ __overlay__ {
+ gpio-leds {
+ compatible = "gpio-leds";
+
+ secure96-u1 {
+ gpios = <GPIO_PARENT_PLACEHOLDER_PHANDLE
+ FixedPcdGet32 (PcdGpioPinG)
+ FixedPcdGet32 (PcdGpioPolarity)>;
+ };
+ secure96-u2 {
+ gpios = <GPIO_PARENT_PLACEHOLDER_PHANDLE
+ FixedPcdGet32 (PcdGpioPinF)
+ FixedPcdGet32 (PcdGpioPolarity)>;
+ };
+ secure96-u3 {
+ gpios = <GPIO_PARENT_PLACEHOLDER_PHANDLE
+ FixedPcdGet32 (PcdGpioPinI)
+ FixedPcdGet32 (PcdGpioPolarity)>;
+ };
+ secure96-u4 {
+ gpios = <GPIO_PARENT_PLACEHOLDER_PHANDLE
+ FixedPcdGet32 (PcdGpioPinH)
+ FixedPcdGet32 (PcdGpioPolarity)>;
+ };
+ };
+ };
+ };
+};
diff --git a/Platform/NinetySixBoards/Secure96Dxe/Secure96.h b/Platform/NinetySixBoards/Secure96Dxe/Secure96.h
new file mode 100644
index 000000000000..84b8aed13d1e
--- /dev/null
+++ b/Platform/NinetySixBoards/Secure96Dxe/Secure96.h
@@ -0,0 +1,26 @@
+/** @file
+
+ Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>
+
+ This program and the accompanying materials are licensed and made available
+ under the terms and conditions of the BSD License which accompanies this
+ distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+**/
+
+#ifndef _SECURE96_H_
+#define _SECURE96_H_
+
+#define ATSHA204A_SLAVE_ADDRESS 0x60
+#define ATSHA204A_DT_NODENAME atsha204a@60
+
+#define ATECC508A_SLAVE_ADDRESS 0x51
+#define ATECC508A_DT_NODENAME atecc508a@51
+
+#define INFINEON_SLB9670_SPI_CS 0x0
+#define INFINEON_SLB9670_DT_NODENAME tpm@0
+
+#endif // _SECURE96_H_
diff --git a/Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.c b/Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.c
new file mode 100644
index 000000000000..000f4b4abba4
--- /dev/null
+++ b/Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.c
@@ -0,0 +1,211 @@
+/** @file
+ 96boards Secure96 mezzanine board DXE driver.
+
+ Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>
+
+ This program and the accompanying materials are licensed and made available
+ under the terms and conditions of the BSD License which accompanies this
+ distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+**/
+
+#include <PiDxe.h>
+#include <libfdt.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/DxeServicesLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/UefiLib.h>
+#include <Protocol/LsConnector.h>
+#include <Protocol/Mezzanine.h>
+
+#include "Secure96.h"
+
+STATIC CONST UINT32 mI2cAtmelSha204aSlaveAddress[] = {
+ ATSHA204A_SLAVE_ADDRESS,
+
+ //
+ // The Atmel AtSha204a has an annoying 'wake' mode where it will only wake
+ // up if SDA is held low for a certain amount of time. Attempting to access
+ // a device at address 0x0 at 100 kHz should be sufficient to create this
+ // wake condition, so add address 0x0 to the slave addresses.
+ //
+ 0
+};
+
+STATIC CONST EFI_I2C_DEVICE mI2c0Devices[] = {
+ {
+ &gAtSha204aI2cDeviceGuid, // DeviceGuid
+ 0, // DeviceIndex
+ 0, // HardwareRevision
+ 0, // I2C bus configuration
+ ARRAY_SIZE (mI2cAtmelSha204aSlaveAddress), // SlaveAddressCount
+ mI2cAtmelSha204aSlaveAddress // SlaveAddressArray
+ }
+};
+
+STATIC CONST CHAR8 mLedNodes[][46] = {
+ "/fragment@2/__overlay__/gpio-leds/secure96-u1",
+ "/fragment@2/__overlay__/gpio-leds/secure96-u2",
+ "/fragment@2/__overlay__/gpio-leds/secure96-u3",
+ "/fragment@2/__overlay__/gpio-leds/secure96-u4",
+};
+
+STATIC
+VOID
+SetOverlayFragmentTarget (
+ VOID *Overlay,
+ CONST CHAR8 *NodeName,
+ CONST CHAR8 *Target
+ )
+{
+ INT32 Node;
+ INT32 Err;
+
+ Node = fdt_path_offset (Overlay, NodeName);
+ ASSERT (Node > 0);
+
+ Err = fdt_setprop (Overlay, Node, "target-path", Target,
+ AsciiStrLen (Target) + 1);
+ if (Err) {
+ DEBUG ((DEBUG_ERROR, "%a: fdt_setprop() failed - %a\n",
+ __FUNCTION__, fdt_strerror (Err)));
+ }
+}
+
+STATIC
+VOID
+FixupOverlay (
+ VOID *Dtb,
+ VOID *Overlay
+ )
+{
+ INT32 Node;
+ UINT32 GpioPhandle;
+ UINTN Idx;
+ UINT32 *GpioProp;
+ INT32 Err;
+
+ //
+ // Set the correct GPIO phandle in the LED nodes
+ //
+ Node = fdt_path_offset (Dtb, FixedPcdGetPtr (PcdGpioParent));
+ ASSERT (Node > 0);
+
+ GpioPhandle = fdt_get_phandle (Dtb, Node);
+ if (!GpioPhandle) {
+ //
+ // Node has no phandle yet -> create one
+ //
+ GpioPhandle = 1 + fdt_get_max_phandle (Dtb);
+ ASSERT (GpioPhandle >= 1);
+
+ Err = fdt_setprop_u32 (Dtb, Node, "phandle", GpioPhandle);
+ if (Err) {
+ DEBUG ((DEBUG_ERROR,
+ "%a: fdt_setprop_u32(.., .., \"phandle\", 0x%x) failed - %a\n",
+ __FUNCTION__, GpioPhandle, fdt_strerror (Err)));
+ }
+ }
+
+ for (Idx = 0; Idx < ARRAY_SIZE (mLedNodes); Idx++) {
+ Node = fdt_path_offset (Overlay, mLedNodes[Idx]);
+ ASSERT (Node > 0);
+
+ GpioProp = fdt_getprop_w (Overlay, Node, "gpios", NULL);
+ ASSERT (GpioProp != NULL);
+
+ *GpioProp = cpu_to_fdt32 (GpioPhandle);
+ }
+
+ SetOverlayFragmentTarget (Overlay, "/fragment@0",
+ FixedPcdGetPtr (PcdI2c0Parent));
+
+ SetOverlayFragmentTarget (Overlay, "/fragment@1",
+ FixedPcdGetPtr (PcdSpiParent));
+}
+
+/**
+ Apply the mezzanine's DT overlay
+
+ @param[in] This Pointer to the MEZZANINE_PROTOCOL instance.
+ @param[in,out] Dtb Pointer to the device tree blob
+
+ @return EFI_SUCCESS Operation succeeded.
+ @return other An error has occurred.
+**/
+STATIC
+EFI_STATUS
+ApplyDeviceTreeOverlay (
+ IN MEZZANINE_PROTOCOL *This,
+ IN OUT VOID *Dtb
+ )
+{
+ VOID *Overlay;
+ UINTN OverlaySize;
+ EFI_STATUS Status;
+ INT32 Err;
+
+ //
+ // Load the raw overlay DTB image from the raw section of this FFS file.
+ //
+ Status = GetSectionFromFv (&gEfiCallerIdGuid,
+ EFI_SECTION_RAW, 0, &Overlay, &OverlaySize);
+ ASSERT_EFI_ERROR (Status);
+ if (EFI_ERROR (Status)) {
+ return EFI_NOT_FOUND;
+ }
+
+ //
+ // Fix up unresolved references in the overlay.
+ //
+ FixupOverlay (Dtb, Overlay);
+
+ //
+ // Merge the overlay with the DTB
+ //
+ Err = fdt_overlay_apply (Dtb, Overlay);
+ if (Err) {
+ DEBUG ((DEBUG_ERROR, "%a: fdt_overlay_apply() failed - %a\n",
+ __FUNCTION__, fdt_strerror (Err)));
+ return EFI_NOT_FOUND;
+ }
+
+ return EFI_SUCCESS;
+}
+
+STATIC MEZZANINE_PROTOCOL mMezzanine = {
+ ApplyDeviceTreeOverlay,
+ ARRAY_SIZE (mI2c0Devices),
+ 0,
+ mI2c0Devices,
+ NULL,
+ NULL,
+};
+
+EFI_STATUS
+EFIAPI
+Secure96DxeEntryPoint (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ LS_CONNECTOR_PROTOCOL *LsConnector;
+
+ Status = gBS->LocateProtocol (&gNinetySixBoardsLsConnectorProtocolGuid, NULL,
+ (VOID **)&LsConnector);
+ ASSERT_EFI_ERROR (Status);
+
+ if (LsConnector->MezzanineType != MezzanineSecure96) {
+ return EFI_NOT_FOUND;
+ }
+
+ return gBS->InstallProtocolInterface (&ImageHandle,
+ &gNinetySixBoardsMezzanineProtocolGuid,
+ EFI_NATIVE_INTERFACE,
+ &mMezzanine);
+}
diff --git a/Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.inf b/Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.inf
new file mode 100644
index 000000000000..e5686b9f5382
--- /dev/null
+++ b/Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.inf
@@ -0,0 +1,67 @@
+## @file
+#
+# Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>
+#
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+##
+
+[Defines]
+ INF_VERSION = 0x0001001A
+ BASE_NAME = Secure96Dxe
+ FILE_GUID = 31519ec4-65f1-4790-b223-aa9330dd75fd
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ ENTRY_POINT = Secure96DxeEntryPoint
+
+[Sources]
+ Secure96.dts
+ Secure96.h
+ Secure96Dxe.c
+
+[Packages]
+ EmbeddedPkg/EmbeddedPkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ MdePkg/MdePkg.dec
+ Platform/NinetySixBoards/NinetySixBoards.dec
+ Silicon/Atmel/AtSha204a/AtSha204a.dec
+
+[LibraryClasses]
+ BaseLib
+ DebugLib
+ DxeServicesLib
+ FdtLib
+ UefiBootServicesTableLib
+ UefiDriverEntryPoint
+ UefiLib
+
+[Protocols]
+ gNinetySixBoardsLsConnectorProtocolGuid ## CONSUMES
+ gNinetySixBoardsMezzanineProtocolGuid ## PRODUCES
+
+[Guids]
+ gAtSha204aI2cDeviceGuid
+ gFdtTableGuid
+
+[FixedPcd]
+ gNinetySixBoardsTokenSpaceGuid.PcdGpioParent
+ gNinetySixBoardsTokenSpaceGuid.PcdGpioPinF
+ gNinetySixBoardsTokenSpaceGuid.PcdGpioPinG
+ gNinetySixBoardsTokenSpaceGuid.PcdGpioPinH
+ gNinetySixBoardsTokenSpaceGuid.PcdGpioPinI
+ gNinetySixBoardsTokenSpaceGuid.PcdGpioPolarity
+ gNinetySixBoardsTokenSpaceGuid.PcdI2c0Parent
+ gNinetySixBoardsTokenSpaceGuid.PcdSpiParent
+
+[Depex]
+ gNinetySixBoardsLsConnectorProtocolGuid
+
+[BuildOptions]
+ # dtc emits lots of spurious warnings for overlays
+ *_*_*_DTC_FLAGS = -q
--
2.11.0
_______________________________________________
edk2-devel mailing list
edk2-devel@lists.01.org
https://lists.01.org/mailman/listinfo/edk2-devel
On Tue, Feb 20, 2018 at 05:49:42PM +0000, Ard Biesheuvel wrote:
> Add a driver that describes the Secure96 mezzanine board, and exposes
> both the information required to describe it to the OS using a DT overlay,
> and to describe it to UEFI itself.
>
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> ---
> Platform/NinetySixBoards/Secure96Dxe/Secure96.dts | 76 +++++++
> Platform/NinetySixBoards/Secure96Dxe/Secure96.h | 26 +++
> Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.c | 211 ++++++++++++++++++++
> Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.inf | 67 +++++++
> 4 files changed, 380 insertions(+)
>
> diff --git a/Platform/NinetySixBoards/Secure96Dxe/Secure96.dts b/Platform/NinetySixBoards/Secure96Dxe/Secure96.dts
> new file mode 100644
> index 000000000000..08f59978c06f
> --- /dev/null
> +++ b/Platform/NinetySixBoards/Secure96Dxe/Secure96.dts
> @@ -0,0 +1,76 @@
> +/** @file
> + * Copyright (c) 2018, Linaro Limited. All rights reserved.
> + *
> + * This program and the accompanying materials are licensed and made
> + * available under the terms and conditions of the BSD License which
> + * accompanies this distribution. The full text of the license may be
> + * found at http://opensource.org/licenses/bsd-license.php
> + *
> + * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> + * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
> + * IMPLIED.
> + */
> +
> +#include "Secure96.h"
> +
> +#define GPIO_PARENT_PLACEHOLDER_PHANDLE 0x0
Since this is likely to be used as a template for future drivers
including DT overlays (not just mezzanine), could you over-comment a
bit? Could you say "32-bit value filled in by this driver's helper
function FixupOverlay() when applying overlay" (if that's correct)?
/
Leif
> +
> +/dts-v1/;
> +/plugin/;
> +
> +/ {
> + fragment@0 {
> + target-path = "I2C_PARENT_PLACEHOLDER_STRING";
> + __overlay__ {
> + ATSHA204A_DT_NODENAME {
> + compatible = "atmel,atsha204a";
> + reg = <ATSHA204A_SLAVE_ADDRESS>;
> + };
> + ATECC508A_DT_NODENAME {
> + compatible = "atmel,atecc508a";
> + reg = <ATECC508A_SLAVE_ADDRESS>;
> + };
> + };
> + };
> +
> + fragment@1 {
> + target-path = "SPI_PARENT_PLACEHOLDER_STRING";
> + __overlay__ {
> + INFINEON_SLB9670_DT_NODENAME {
> + compatible = "infineon,slb9670";
> + reg = <INFINEON_SLB9670_SPI_CS>;
> + spi-max-frequency = <22500000>;
> + };
> + };
> + };
> +
> + fragment@2 {
> + target-path = "/";
> + __overlay__ {
> + gpio-leds {
> + compatible = "gpio-leds";
> +
> + secure96-u1 {
> + gpios = <GPIO_PARENT_PLACEHOLDER_PHANDLE
> + FixedPcdGet32 (PcdGpioPinG)
> + FixedPcdGet32 (PcdGpioPolarity)>;
> + };
> + secure96-u2 {
> + gpios = <GPIO_PARENT_PLACEHOLDER_PHANDLE
> + FixedPcdGet32 (PcdGpioPinF)
> + FixedPcdGet32 (PcdGpioPolarity)>;
> + };
> + secure96-u3 {
> + gpios = <GPIO_PARENT_PLACEHOLDER_PHANDLE
> + FixedPcdGet32 (PcdGpioPinI)
> + FixedPcdGet32 (PcdGpioPolarity)>;
> + };
> + secure96-u4 {
> + gpios = <GPIO_PARENT_PLACEHOLDER_PHANDLE
> + FixedPcdGet32 (PcdGpioPinH)
> + FixedPcdGet32 (PcdGpioPolarity)>;
> + };
> + };
> + };
> + };
> +};
> diff --git a/Platform/NinetySixBoards/Secure96Dxe/Secure96.h b/Platform/NinetySixBoards/Secure96Dxe/Secure96.h
> new file mode 100644
> index 000000000000..84b8aed13d1e
> --- /dev/null
> +++ b/Platform/NinetySixBoards/Secure96Dxe/Secure96.h
> @@ -0,0 +1,26 @@
> +/** @file
> +
> + Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>
> +
> + This program and the accompanying materials are licensed and made available
> + under the terms and conditions of the BSD License which accompanies this
> + distribution. The full text of the license may be found at
> + http://opensource.org/licenses/bsd-license.php
> +
> + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> +**/
> +
> +#ifndef _SECURE96_H_
> +#define _SECURE96_H_
> +
> +#define ATSHA204A_SLAVE_ADDRESS 0x60
> +#define ATSHA204A_DT_NODENAME atsha204a@60
> +
> +#define ATECC508A_SLAVE_ADDRESS 0x51
> +#define ATECC508A_DT_NODENAME atecc508a@51
> +
> +#define INFINEON_SLB9670_SPI_CS 0x0
> +#define INFINEON_SLB9670_DT_NODENAME tpm@0
> +
> +#endif // _SECURE96_H_
> diff --git a/Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.c b/Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.c
> new file mode 100644
> index 000000000000..000f4b4abba4
> --- /dev/null
> +++ b/Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.c
> @@ -0,0 +1,211 @@
> +/** @file
> + 96boards Secure96 mezzanine board DXE driver.
> +
> + Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>
> +
> + This program and the accompanying materials are licensed and made available
> + under the terms and conditions of the BSD License which accompanies this
> + distribution. The full text of the license may be found at
> + http://opensource.org/licenses/bsd-license.php
> +
> + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> +**/
> +
> +#include <PiDxe.h>
> +#include <libfdt.h>
> +#include <Library/BaseLib.h>
> +#include <Library/DebugLib.h>
> +#include <Library/DxeServicesLib.h>
> +#include <Library/UefiBootServicesTableLib.h>
> +#include <Library/UefiLib.h>
> +#include <Protocol/LsConnector.h>
> +#include <Protocol/Mezzanine.h>
> +
> +#include "Secure96.h"
> +
> +STATIC CONST UINT32 mI2cAtmelSha204aSlaveAddress[] = {
> + ATSHA204A_SLAVE_ADDRESS,
> +
> + //
> + // The Atmel AtSha204a has an annoying 'wake' mode where it will only wake
> + // up if SDA is held low for a certain amount of time. Attempting to access
> + // a device at address 0x0 at 100 kHz should be sufficient to create this
> + // wake condition, so add address 0x0 to the slave addresses.
> + //
> + 0
> +};
> +
> +STATIC CONST EFI_I2C_DEVICE mI2c0Devices[] = {
> + {
> + &gAtSha204aI2cDeviceGuid, // DeviceGuid
> + 0, // DeviceIndex
> + 0, // HardwareRevision
> + 0, // I2C bus configuration
> + ARRAY_SIZE (mI2cAtmelSha204aSlaveAddress), // SlaveAddressCount
> + mI2cAtmelSha204aSlaveAddress // SlaveAddressArray
> + }
> +};
> +
> +STATIC CONST CHAR8 mLedNodes[][46] = {
> + "/fragment@2/__overlay__/gpio-leds/secure96-u1",
> + "/fragment@2/__overlay__/gpio-leds/secure96-u2",
> + "/fragment@2/__overlay__/gpio-leds/secure96-u3",
> + "/fragment@2/__overlay__/gpio-leds/secure96-u4",
> +};
> +
> +STATIC
> +VOID
> +SetOverlayFragmentTarget (
> + VOID *Overlay,
> + CONST CHAR8 *NodeName,
> + CONST CHAR8 *Target
> + )
> +{
> + INT32 Node;
> + INT32 Err;
> +
> + Node = fdt_path_offset (Overlay, NodeName);
> + ASSERT (Node > 0);
> +
> + Err = fdt_setprop (Overlay, Node, "target-path", Target,
> + AsciiStrLen (Target) + 1);
> + if (Err) {
> + DEBUG ((DEBUG_ERROR, "%a: fdt_setprop() failed - %a\n",
> + __FUNCTION__, fdt_strerror (Err)));
> + }
> +}
> +
> +STATIC
> +VOID
> +FixupOverlay (
> + VOID *Dtb,
> + VOID *Overlay
> + )
> +{
> + INT32 Node;
> + UINT32 GpioPhandle;
> + UINTN Idx;
> + UINT32 *GpioProp;
> + INT32 Err;
> +
> + //
> + // Set the correct GPIO phandle in the LED nodes
> + //
> + Node = fdt_path_offset (Dtb, FixedPcdGetPtr (PcdGpioParent));
> + ASSERT (Node > 0);
> +
> + GpioPhandle = fdt_get_phandle (Dtb, Node);
> + if (!GpioPhandle) {
> + //
> + // Node has no phandle yet -> create one
> + //
> + GpioPhandle = 1 + fdt_get_max_phandle (Dtb);
> + ASSERT (GpioPhandle >= 1);
> +
> + Err = fdt_setprop_u32 (Dtb, Node, "phandle", GpioPhandle);
> + if (Err) {
> + DEBUG ((DEBUG_ERROR,
> + "%a: fdt_setprop_u32(.., .., \"phandle\", 0x%x) failed - %a\n",
> + __FUNCTION__, GpioPhandle, fdt_strerror (Err)));
> + }
> + }
> +
> + for (Idx = 0; Idx < ARRAY_SIZE (mLedNodes); Idx++) {
> + Node = fdt_path_offset (Overlay, mLedNodes[Idx]);
> + ASSERT (Node > 0);
> +
> + GpioProp = fdt_getprop_w (Overlay, Node, "gpios", NULL);
> + ASSERT (GpioProp != NULL);
> +
> + *GpioProp = cpu_to_fdt32 (GpioPhandle);
> + }
> +
> + SetOverlayFragmentTarget (Overlay, "/fragment@0",
> + FixedPcdGetPtr (PcdI2c0Parent));
> +
> + SetOverlayFragmentTarget (Overlay, "/fragment@1",
> + FixedPcdGetPtr (PcdSpiParent));
> +}
> +
> +/**
> + Apply the mezzanine's DT overlay
> +
> + @param[in] This Pointer to the MEZZANINE_PROTOCOL instance.
> + @param[in,out] Dtb Pointer to the device tree blob
> +
> + @return EFI_SUCCESS Operation succeeded.
> + @return other An error has occurred.
> +**/
> +STATIC
> +EFI_STATUS
> +ApplyDeviceTreeOverlay (
> + IN MEZZANINE_PROTOCOL *This,
> + IN OUT VOID *Dtb
> + )
> +{
> + VOID *Overlay;
> + UINTN OverlaySize;
> + EFI_STATUS Status;
> + INT32 Err;
> +
> + //
> + // Load the raw overlay DTB image from the raw section of this FFS file.
> + //
> + Status = GetSectionFromFv (&gEfiCallerIdGuid,
> + EFI_SECTION_RAW, 0, &Overlay, &OverlaySize);
> + ASSERT_EFI_ERROR (Status);
> + if (EFI_ERROR (Status)) {
> + return EFI_NOT_FOUND;
> + }
> +
> + //
> + // Fix up unresolved references in the overlay.
> + //
> + FixupOverlay (Dtb, Overlay);
> +
> + //
> + // Merge the overlay with the DTB
> + //
> + Err = fdt_overlay_apply (Dtb, Overlay);
> + if (Err) {
> + DEBUG ((DEBUG_ERROR, "%a: fdt_overlay_apply() failed - %a\n",
> + __FUNCTION__, fdt_strerror (Err)));
> + return EFI_NOT_FOUND;
> + }
> +
> + return EFI_SUCCESS;
> +}
> +
> +STATIC MEZZANINE_PROTOCOL mMezzanine = {
> + ApplyDeviceTreeOverlay,
> + ARRAY_SIZE (mI2c0Devices),
> + 0,
> + mI2c0Devices,
> + NULL,
> + NULL,
> +};
> +
> +EFI_STATUS
> +EFIAPI
> +Secure96DxeEntryPoint (
> + IN EFI_HANDLE ImageHandle,
> + IN EFI_SYSTEM_TABLE *SystemTable
> + )
> +{
> + EFI_STATUS Status;
> + LS_CONNECTOR_PROTOCOL *LsConnector;
> +
> + Status = gBS->LocateProtocol (&gNinetySixBoardsLsConnectorProtocolGuid, NULL,
> + (VOID **)&LsConnector);
> + ASSERT_EFI_ERROR (Status);
> +
> + if (LsConnector->MezzanineType != MezzanineSecure96) {
> + return EFI_NOT_FOUND;
> + }
> +
> + return gBS->InstallProtocolInterface (&ImageHandle,
> + &gNinetySixBoardsMezzanineProtocolGuid,
> + EFI_NATIVE_INTERFACE,
> + &mMezzanine);
> +}
> diff --git a/Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.inf b/Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.inf
> new file mode 100644
> index 000000000000..e5686b9f5382
> --- /dev/null
> +++ b/Platform/NinetySixBoards/Secure96Dxe/Secure96Dxe.inf
> @@ -0,0 +1,67 @@
> +## @file
> +#
> +# Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>
> +#
> +# This program and the accompanying materials
> +# are licensed and made available under the terms and conditions of the BSD License
> +# which accompanies this distribution. The full text of the license may be found at
> +# http://opensource.org/licenses/bsd-license.php
> +#
> +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
> +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
> +#
> +##
> +
> +[Defines]
> + INF_VERSION = 0x0001001A
> + BASE_NAME = Secure96Dxe
> + FILE_GUID = 31519ec4-65f1-4790-b223-aa9330dd75fd
> + MODULE_TYPE = DXE_DRIVER
> + VERSION_STRING = 1.0
> + ENTRY_POINT = Secure96DxeEntryPoint
> +
> +[Sources]
> + Secure96.dts
> + Secure96.h
> + Secure96Dxe.c
> +
> +[Packages]
> + EmbeddedPkg/EmbeddedPkg.dec
> + MdeModulePkg/MdeModulePkg.dec
> + MdePkg/MdePkg.dec
> + Platform/NinetySixBoards/NinetySixBoards.dec
> + Silicon/Atmel/AtSha204a/AtSha204a.dec
> +
> +[LibraryClasses]
> + BaseLib
> + DebugLib
> + DxeServicesLib
> + FdtLib
> + UefiBootServicesTableLib
> + UefiDriverEntryPoint
> + UefiLib
> +
> +[Protocols]
> + gNinetySixBoardsLsConnectorProtocolGuid ## CONSUMES
> + gNinetySixBoardsMezzanineProtocolGuid ## PRODUCES
> +
> +[Guids]
> + gAtSha204aI2cDeviceGuid
> + gFdtTableGuid
> +
> +[FixedPcd]
> + gNinetySixBoardsTokenSpaceGuid.PcdGpioParent
> + gNinetySixBoardsTokenSpaceGuid.PcdGpioPinF
> + gNinetySixBoardsTokenSpaceGuid.PcdGpioPinG
> + gNinetySixBoardsTokenSpaceGuid.PcdGpioPinH
> + gNinetySixBoardsTokenSpaceGuid.PcdGpioPinI
> + gNinetySixBoardsTokenSpaceGuid.PcdGpioPolarity
> + gNinetySixBoardsTokenSpaceGuid.PcdI2c0Parent
> + gNinetySixBoardsTokenSpaceGuid.PcdSpiParent
> +
> +[Depex]
> + gNinetySixBoardsLsConnectorProtocolGuid
> +
> +[BuildOptions]
> + # dtc emits lots of spurious warnings for overlays
> + *_*_*_DTC_FLAGS = -q
> --
> 2.11.0
>
_______________________________________________
edk2-devel mailing list
edk2-devel@lists.01.org
https://lists.01.org/mailman/listinfo/edk2-devel
© 2016 - 2024 Red Hat, Inc.