* [PATCH v7 0/3] Add Amlogic secure monitor driver
@ 2016-06-10 19:44 ` Carlo Caione
0 siblings, 0 replies; 18+ messages in thread
From: Carlo Caione @ 2016-06-10 19:44 UTC (permalink / raw)
To: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-amlogic-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-6IF/jdPJHihWk0Htik3J/w, devicetree-u79uwXL29TY76Z2rM5mHXA,
khilman-rdvid1DuHRBWk0Htik3J/w, mark.rutland-5wv7dgnIgG8,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A,
matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w,
narmstrong-rdvid1DuHRBWk0Htik3J/w,
bjdooks-gM/Ye1E23mwN+BqQ9rBEUg
Cc: Carlo Caione
From: Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org>
In the Amlogic SoCs the secure monitor calls are used for a lot of reasons:
interact with the NVMEM (efuses), check the reboot reason, set USB boot, ...
This driver defines a generic interface towards the secure monitor that can be
used by more specialized drivers to interact with the secure monitor itself
without worrying about bounce buffers managing.
Changelog:
v7:
* dropped "simple-bus"
v6:
* Added comments
* Fix checking u32 < 0
* s/-ENODEV/-EINVAL/ in the probe function
* Use WARN_ON()
v5:
* Moved IDs from DT to header file
* Made read/write bounce buffers not mandatory
* Introduced helper meson_sm_map_shmem()
v4:
* Changed patches order
* Removed now useless PATCH 2/4
* Changed compatible to be SoC-specific
* In the DT now we use SoC-agnostic IDs for the SMC functions. These IDs are
traslated into SoC specific function IDs inside the driver
* Added error checking on meson_sm_call() to retrieve the base address
* Improved printing on errors
v3:
* Moved driver to drivers/firmware
* Added EXPORT_SYMBOL macros
* Changed '_' in '-'
* Introduced 'struct meson_sm_firmware' and 'meson_sm_get_fw()' to be used by
drivers using the secure-monitor to enforce probe ordering
v2:
* All the SMC function identifiers are now in a SoC-specific header file to
be included by the DTS files so the SMC commands are now defined in the DT
instead to be hardcoded into the driver
* Patchset is no longer an RFC
* Better error management and boundary checking
* s/unsigned int/u32/
* SMC call not only on CPU 0
* Fix memory leaking
* s/amlogic/meson/ in the directory names
Carlo Caione (3):
firmware: Amlogic: Add secure monitor driver
documentation: Add secure monitor binding documentation
ARM64: dts: amlogic: gxbb: Enable secure monitor
.../bindings/firmware/meson/meson_sm.txt | 27 ++
arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 6 +
drivers/firmware/Kconfig | 1 +
drivers/firmware/Makefile | 1 +
drivers/firmware/meson/Kconfig | 8 +
drivers/firmware/meson/Makefile | 1 +
drivers/firmware/meson/meson_sm.c | 312 +++++++++++++++++++++
include/linux/firmware/meson/meson_sm.h | 32 +++
8 files changed, 388 insertions(+)
create mode 100644 Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
create mode 100644 drivers/firmware/meson/Kconfig
create mode 100644 drivers/firmware/meson/Makefile
create mode 100644 drivers/firmware/meson/meson_sm.c
create mode 100644 include/linux/firmware/meson/meson_sm.h
--
2.7.4
--
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^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH v7 0/3] Add Amlogic secure monitor driver
@ 2016-06-10 19:44 ` Carlo Caione
0 siblings, 0 replies; 18+ messages in thread
From: Carlo Caione @ 2016-06-10 19:44 UTC (permalink / raw)
To: linux-arm-kernel
From: Carlo Caione <carlo@endlessm.com>
In the Amlogic SoCs the secure monitor calls are used for a lot of reasons:
interact with the NVMEM (efuses), check the reboot reason, set USB boot, ...
This driver defines a generic interface towards the secure monitor that can be
used by more specialized drivers to interact with the secure monitor itself
without worrying about bounce buffers managing.
Changelog:
v7:
* dropped "simple-bus"
v6:
* Added comments
* Fix checking u32 < 0
* s/-ENODEV/-EINVAL/ in the probe function
* Use WARN_ON()
v5:
* Moved IDs from DT to header file
* Made read/write bounce buffers not mandatory
* Introduced helper meson_sm_map_shmem()
v4:
* Changed patches order
* Removed now useless PATCH 2/4
* Changed compatible to be SoC-specific
* In the DT now we use SoC-agnostic IDs for the SMC functions. These IDs are
traslated into SoC specific function IDs inside the driver
* Added error checking on meson_sm_call() to retrieve the base address
* Improved printing on errors
v3:
* Moved driver to drivers/firmware
* Added EXPORT_SYMBOL macros
* Changed '_' in '-'
* Introduced 'struct meson_sm_firmware' and 'meson_sm_get_fw()' to be used by
drivers using the secure-monitor to enforce probe ordering
v2:
* All the SMC function identifiers are now in a SoC-specific header file to
be included by the DTS files so the SMC commands are now defined in the DT
instead to be hardcoded into the driver
* Patchset is no longer an RFC
* Better error management and boundary checking
* s/unsigned int/u32/
* SMC call not only on CPU 0
* Fix memory leaking
* s/amlogic/meson/ in the directory names
Carlo Caione (3):
firmware: Amlogic: Add secure monitor driver
documentation: Add secure monitor binding documentation
ARM64: dts: amlogic: gxbb: Enable secure monitor
.../bindings/firmware/meson/meson_sm.txt | 27 ++
arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 6 +
drivers/firmware/Kconfig | 1 +
drivers/firmware/Makefile | 1 +
drivers/firmware/meson/Kconfig | 8 +
drivers/firmware/meson/Makefile | 1 +
drivers/firmware/meson/meson_sm.c | 312 +++++++++++++++++++++
include/linux/firmware/meson/meson_sm.h | 32 +++
8 files changed, 388 insertions(+)
create mode 100644 Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
create mode 100644 drivers/firmware/meson/Kconfig
create mode 100644 drivers/firmware/meson/Makefile
create mode 100644 drivers/firmware/meson/meson_sm.c
create mode 100644 include/linux/firmware/meson/meson_sm.h
--
2.7.4
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH v7 0/3] Add Amlogic secure monitor driver
@ 2016-06-10 19:44 ` Carlo Caione
0 siblings, 0 replies; 18+ messages in thread
From: Carlo Caione @ 2016-06-10 19:44 UTC (permalink / raw)
To: linus-amlogic
From: Carlo Caione <carlo@endlessm.com>
In the Amlogic SoCs the secure monitor calls are used for a lot of reasons:
interact with the NVMEM (efuses), check the reboot reason, set USB boot, ...
This driver defines a generic interface towards the secure monitor that can be
used by more specialized drivers to interact with the secure monitor itself
without worrying about bounce buffers managing.
Changelog:
v7:
* dropped "simple-bus"
v6:
* Added comments
* Fix checking u32 < 0
* s/-ENODEV/-EINVAL/ in the probe function
* Use WARN_ON()
v5:
* Moved IDs from DT to header file
* Made read/write bounce buffers not mandatory
* Introduced helper meson_sm_map_shmem()
v4:
* Changed patches order
* Removed now useless PATCH 2/4
* Changed compatible to be SoC-specific
* In the DT now we use SoC-agnostic IDs for the SMC functions. These IDs are
traslated into SoC specific function IDs inside the driver
* Added error checking on meson_sm_call() to retrieve the base address
* Improved printing on errors
v3:
* Moved driver to drivers/firmware
* Added EXPORT_SYMBOL macros
* Changed '_' in '-'
* Introduced 'struct meson_sm_firmware' and 'meson_sm_get_fw()' to be used by
drivers using the secure-monitor to enforce probe ordering
v2:
* All the SMC function identifiers are now in a SoC-specific header file to
be included by the DTS files so the SMC commands are now defined in the DT
instead to be hardcoded into the driver
* Patchset is no longer an RFC
* Better error management and boundary checking
* s/unsigned int/u32/
* SMC call not only on CPU 0
* Fix memory leaking
* s/amlogic/meson/ in the directory names
Carlo Caione (3):
firmware: Amlogic: Add secure monitor driver
documentation: Add secure monitor binding documentation
ARM64: dts: amlogic: gxbb: Enable secure monitor
.../bindings/firmware/meson/meson_sm.txt | 27 ++
arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 6 +
drivers/firmware/Kconfig | 1 +
drivers/firmware/Makefile | 1 +
drivers/firmware/meson/Kconfig | 8 +
drivers/firmware/meson/Makefile | 1 +
drivers/firmware/meson/meson_sm.c | 312 +++++++++++++++++++++
include/linux/firmware/meson/meson_sm.h | 32 +++
8 files changed, 388 insertions(+)
create mode 100644 Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
create mode 100644 drivers/firmware/meson/Kconfig
create mode 100644 drivers/firmware/meson/Makefile
create mode 100644 drivers/firmware/meson/meson_sm.c
create mode 100644 include/linux/firmware/meson/meson_sm.h
--
2.7.4
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH v7 1/3] firmware: Amlogic: Add secure monitor driver
2016-06-10 19:44 ` Carlo Caione
(?)
@ 2016-06-10 19:44 ` Carlo Caione
-1 siblings, 0 replies; 18+ messages in thread
From: Carlo Caione @ 2016-06-10 19:44 UTC (permalink / raw)
To: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-amlogic-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-6IF/jdPJHihWk0Htik3J/w, devicetree-u79uwXL29TY76Z2rM5mHXA,
khilman-rdvid1DuHRBWk0Htik3J/w, mark.rutland-5wv7dgnIgG8,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A,
matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w,
narmstrong-rdvid1DuHRBWk0Htik3J/w,
bjdooks-gM/Ye1E23mwN+BqQ9rBEUg
Cc: Carlo Caione
From: Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org>
Introduce a driver to provide calls into secure monitor mode.
In the Amlogic SoCs these calls are used for multiple reasons: access to
NVMEM, set USB boot, enable JTAG, etc...
Signed-off-by: Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org>
---
drivers/firmware/Kconfig | 1 +
drivers/firmware/Makefile | 1 +
drivers/firmware/meson/Kconfig | 8 +
drivers/firmware/meson/Makefile | 1 +
drivers/firmware/meson/meson_sm.c | 312 ++++++++++++++++++++++++++++++++
include/linux/firmware/meson/meson_sm.h | 32 ++++
6 files changed, 355 insertions(+)
create mode 100644 drivers/firmware/meson/Kconfig
create mode 100644 drivers/firmware/meson/Makefile
create mode 100644 drivers/firmware/meson/meson_sm.c
create mode 100644 include/linux/firmware/meson/meson_sm.h
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 6664f11..686e395 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -199,5 +199,6 @@ config HAVE_ARM_SMCCC
source "drivers/firmware/broadcom/Kconfig"
source "drivers/firmware/google/Kconfig"
source "drivers/firmware/efi/Kconfig"
+source "drivers/firmware/meson/Kconfig"
endmenu
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 474bada..fc4bb09 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_QCOM_SCM_32) += qcom_scm-32.o
CFLAGS_qcom_scm-32.o :=$(call as-instr,.arch armv7-a\n.arch_extension sec,-DREQUIRES_SEC=1) -march=armv7-a
obj-y += broadcom/
+obj-y += meson/
obj-$(CONFIG_GOOGLE_FIRMWARE) += google/
obj-$(CONFIG_EFI) += efi/
obj-$(CONFIG_UEFI_CPER) += efi/
diff --git a/drivers/firmware/meson/Kconfig b/drivers/firmware/meson/Kconfig
new file mode 100644
index 0000000..fff11a3
--- /dev/null
+++ b/drivers/firmware/meson/Kconfig
@@ -0,0 +1,8 @@
+#
+# Amlogic Secure Monitor driver
+#
+config MESON_SM
+ bool
+ default ARCH_MESON
+ help
+ Say y here to enable the Amlogic secure monitor driver
diff --git a/drivers/firmware/meson/Makefile b/drivers/firmware/meson/Makefile
new file mode 100644
index 0000000..9ab3884
--- /dev/null
+++ b/drivers/firmware/meson/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_MESON_SM) += meson_sm.o
diff --git a/drivers/firmware/meson/meson_sm.c b/drivers/firmware/meson/meson_sm.c
new file mode 100644
index 0000000..ef548ad
--- /dev/null
+++ b/drivers/firmware/meson/meson_sm.c
@@ -0,0 +1,312 @@
+/*
+ * Amlogic Secure Monitor driver
+ *
+ * Copyright (C) 2016 Endless Mobile, Inc.
+ * Author: Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdarg.h>
+#include <asm/cacheflush.h>
+#include <asm/compiler.h>
+#include <linux/arm-smccc.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/smp.h>
+#include <linux/firmware/meson/meson_sm.h>
+
+struct meson_sm_cmd {
+ unsigned int index;
+ u32 smc_id;
+};
+#define CMD(d, s) { .index = (d), .smc_id = (s), }
+
+struct meson_sm_chip {
+ unsigned int shmem_size;
+ u32 cmd_shmem_in_base;
+ u32 cmd_shmem_out_base;
+ struct meson_sm_cmd cmd[];
+};
+
+struct meson_sm_firmware {
+ struct device *dev;
+ const struct meson_sm_chip *chip;
+ void __iomem *sm_shmem_in_base;
+ void __iomem *sm_shmem_out_base;
+};
+
+struct meson_sm_chip gxbb_chip = {
+ .shmem_size = 0x1000,
+ .cmd_shmem_in_base = 0x82000020,
+ .cmd_shmem_out_base = 0x82000021,
+ .cmd = {
+ CMD(SM_EFUSE_READ, 0x82000030),
+ CMD(SM_EFUSE_WRITE, 0x82000031),
+ CMD(SM_EFUSE_USER_MAX, 0x82000033),
+ { /* sentinel */ },
+ },
+};
+
+static u32 meson_sm_get_cmd(const struct meson_sm_chip *chip, unsigned int cmd_index)
+{
+ unsigned int i;
+
+ for (i = 0; chip->cmd[i].smc_id; i++)
+ if (chip->cmd[i].index == cmd_index)
+ return chip->cmd[i].smc_id;
+
+ return 0;
+}
+
+static u32 __meson_sm_call(u32 cmd, u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4)
+{
+ struct arm_smccc_res res;
+
+ arm_smccc_smc(cmd, arg0, arg1, arg2, arg3, arg4, 0, 0, &res);
+ return res.a0;
+}
+
+static void __iomem *meson_sm_map_shmem(u32 cmd_shmem, unsigned int size)
+{
+ u32 sm_phy_base;
+
+ sm_phy_base = __meson_sm_call(cmd_shmem, 0, 0, 0, 0, 0);
+ if (!sm_phy_base)
+ return 0;
+
+ return ioremap_cache(sm_phy_base, size);
+}
+
+/**
+ * meson_sm_call - generic SMC32 call to the secure-monitor
+ *
+ * @fw: Meson secure-monitor firmware pointer
+ * @cmd_index: Index of the SMC32 function ID
+ * @ret: Returned value
+ * @arg0: SMC32 Argument 0
+ * @arg1: SMC32 Argument 1
+ * @arg2: SMC32 Argument 2
+ * @arg3: SMC32 Argument 3
+ * @arg4: SMC32 Argument 4
+ *
+ * Return: 0 on success, a negative value on error
+ */
+int meson_sm_call(struct meson_sm_firmware *fw, unsigned int cmd_index,
+ u32 *ret, u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4)
+{
+ u32 cmd, lret;
+
+ if (!fw)
+ return -EINVAL;
+
+ cmd = meson_sm_get_cmd(fw->chip, cmd_index);
+ if (!cmd)
+ return -EINVAL;
+
+ lret = __meson_sm_call(cmd, arg0, arg1, arg2, arg3, arg4);
+
+ if (ret)
+ *ret = lret;
+
+ return 0;
+}
+EXPORT_SYMBOL(meson_sm_call);
+
+/**
+ * meson_sm_call_read - retrieve data from secure-monitor
+ *
+ * @fw: Meson secure-monitor firmware pointer
+ * @buffer: Buffer to store the retrieved data
+ * @cmd_index: Index of the SMC32 function ID
+ * @arg0: SMC32 Argument 0
+ * @arg1: SMC32 Argument 1
+ * @arg2: SMC32 Argument 2
+ * @arg3: SMC32 Argument 3
+ * @arg4: SMC32 Argument 4
+ *
+ * Return: size of read data on success, a negative value on error
+ */
+int meson_sm_call_read(struct meson_sm_firmware *fw, void *buffer,
+ unsigned int cmd_index, u32 arg0, u32 arg1,
+ u32 arg2, u32 arg3, u32 arg4)
+{
+ u32 size;
+
+ if (!fw->chip->cmd_shmem_out_base)
+ return -EINVAL;
+
+ if (meson_sm_call(fw, cmd_index, &size, arg0, arg1, arg2, arg3, arg4) < 0)
+ return -EINVAL;
+
+ if (!size || size > fw->chip->shmem_size)
+ return -EINVAL;
+
+ if (buffer)
+ memcpy(buffer, fw->sm_shmem_out_base, size);
+
+ return size;
+}
+EXPORT_SYMBOL(meson_sm_call_read);
+
+/**
+ * meson_sm_call_write - send data to secure-monitor
+ *
+ * @fw: Meson secure-monitor firmware pointer
+ * @buffer: Buffer containing data to send
+ * @b_size: Size of the data to send
+ * @cmd_index: Index of the SMC32 function ID
+ * @arg0: SMC32 Argument 0
+ * @arg1: SMC32 Argument 1
+ * @arg2: SMC32 Argument 2
+ * @arg3: SMC32 Argument 3
+ * @arg4: SMC32 Argument 4
+ *
+ * Return: size of sent data on success, a negative value on error
+ */
+int meson_sm_call_write(struct meson_sm_firmware *fw, void *buffer,
+ unsigned int b_size, unsigned int cmd_index,
+ u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4)
+{
+ u32 size;
+
+ if (b_size > fw->chip->shmem_size)
+ return -EINVAL;
+
+ if (!fw->chip->cmd_shmem_in_base)
+ return -EINVAL;
+
+ memcpy(fw->sm_shmem_in_base, buffer, b_size);
+
+ if (meson_sm_call(fw, cmd_index, &size, arg0, arg1, arg2, arg3, arg4) < 0)
+ return -EINVAL;
+
+ if (!size)
+ return -EINVAL;
+
+ return size;
+}
+EXPORT_SYMBOL(meson_sm_call_write);
+
+/**
+ * meson_sm_get_fw - get Meson firmware struct
+ *
+ * @firmware_node: Device node of the secure-monitor
+ *
+ * Return: Meson secure-monitor firmware struct on success, NULL on error
+ */
+struct meson_sm_firmware *meson_sm_get_fw(struct device_node *firmware_node)
+{
+ struct platform_device *pdev = of_find_device_by_node(firmware_node);
+
+ /*
+ * Returns NULL is the firmware device is not ready.
+ */
+ if (!pdev)
+ return NULL;
+
+ return platform_get_drvdata(pdev);
+}
+EXPORT_SYMBOL(meson_sm_get_fw);
+
+static const struct of_device_id meson_sm_ids[] = {
+ { .compatible = "amlogic,meson-gxbb-sm", .data = &gxbb_chip },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, meson_sm_ids);
+
+static int meson_sm_probe(struct platform_device *pdev)
+{
+ const struct meson_sm_chip *chip;
+ struct meson_sm_firmware *fw;
+ struct device_node *np;
+ const struct of_device_id *matched_np;
+
+ np = of_find_matching_node_and_match(NULL, meson_sm_ids, &matched_np);
+ if (!np) {
+ dev_err(&pdev->dev, "no matching node\n");
+ return -EINVAL;
+ }
+
+ chip = matched_np->data;
+ if (!chip) {
+ dev_err(&pdev->dev, "unable to setup secure-monitor data\n");
+ return -EINVAL;
+ }
+
+ fw = devm_kzalloc(&pdev->dev, sizeof(*fw), GFP_KERNEL);
+ if (!fw)
+ return -ENOMEM;
+
+ if (chip->cmd_shmem_in_base) {
+ fw->sm_shmem_in_base = meson_sm_map_shmem(chip->cmd_shmem_in_base,
+ chip->shmem_size);
+ if (WARN_ON(!fw->sm_shmem_in_base))
+ goto out;
+ }
+
+ if (chip->cmd_shmem_out_base) {
+ fw->sm_shmem_out_base = meson_sm_map_shmem(chip->cmd_shmem_out_base,
+ chip->shmem_size);
+ if (WARN_ON(!fw->sm_shmem_out_base))
+ goto out;
+ }
+
+ fw->dev = &pdev->dev;
+ fw->chip = chip;
+ platform_set_drvdata(pdev, fw);
+
+ dev_info(fw->dev, "enabled\n");
+
+ return 0;
+
+out:
+ if (fw->sm_shmem_in_base)
+ iounmap(fw->sm_shmem_in_base);
+
+ return -EINVAL;
+}
+
+static struct platform_driver meson_sm_platform_driver = {
+ .probe = meson_sm_probe,
+ .driver = {
+ .name = "meson-sm",
+ .of_match_table = meson_sm_ids,
+ },
+};
+
+static int __init meson_sm_init(void)
+{
+ struct platform_device *meson_sm_device;
+ int ret;
+
+ ret = platform_driver_register(&meson_sm_platform_driver);
+ if (ret) {
+ pr_err("unable to register driver\n");
+ return ret;
+ }
+
+ meson_sm_device = platform_device_register_simple("meson-sm",
+ -1, NULL, 0);
+ if (IS_ERR(meson_sm_device)) {
+ pr_err("unable to register device\n");
+ platform_driver_unregister(&meson_sm_platform_driver);
+ return PTR_ERR(meson_sm_device);
+ }
+
+ return 0;
+}
+device_initcall(meson_sm_init);
+
+MODULE_AUTHOR("Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org>");
+MODULE_DESCRIPTION("Amlogic secure monitor driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/firmware/meson/meson_sm.h b/include/linux/firmware/meson/meson_sm.h
new file mode 100644
index 0000000..863b231
--- /dev/null
+++ b/include/linux/firmware/meson/meson_sm.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2016 Endless Mobile, Inc.
+ * Author: Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _MESON_SM_FW_H_
+#define _MESON_SM_FW_H_
+
+#define SM_EFUSE_READ 0
+#define SM_EFUSE_WRITE 1
+#define SM_EFUSE_USER_MAX 2
+
+struct meson_sm_firmware;
+
+int meson_sm_call(struct meson_sm_firmware *fw, unsigned int cmd_index,
+ u32 *ret, u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4);
+int meson_sm_call_write(struct meson_sm_firmware *fw, void *buffer,
+ unsigned int b_size, unsigned int cmd_index,
+ u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4);
+int meson_sm_call_read(struct meson_sm_firmware *fw, void *buffer,
+ unsigned int cmd_index, u32 arg0, u32 arg1,
+ u32 arg2, u32 arg3, u32 arg4);
+struct meson_sm_firmware *meson_sm_get_fw(struct device_node *firmware_node);
+
+#endif /* _MESON_SM_FW_H_ */
--
2.7.4
--
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^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v7 1/3] firmware: Amlogic: Add secure monitor driver
@ 2016-06-10 19:44 ` Carlo Caione
0 siblings, 0 replies; 18+ messages in thread
From: Carlo Caione @ 2016-06-10 19:44 UTC (permalink / raw)
To: linux-arm-kernel
From: Carlo Caione <carlo@endlessm.com>
Introduce a driver to provide calls into secure monitor mode.
In the Amlogic SoCs these calls are used for multiple reasons: access to
NVMEM, set USB boot, enable JTAG, etc...
Signed-off-by: Carlo Caione <carlo@endlessm.com>
---
drivers/firmware/Kconfig | 1 +
drivers/firmware/Makefile | 1 +
drivers/firmware/meson/Kconfig | 8 +
drivers/firmware/meson/Makefile | 1 +
drivers/firmware/meson/meson_sm.c | 312 ++++++++++++++++++++++++++++++++
include/linux/firmware/meson/meson_sm.h | 32 ++++
6 files changed, 355 insertions(+)
create mode 100644 drivers/firmware/meson/Kconfig
create mode 100644 drivers/firmware/meson/Makefile
create mode 100644 drivers/firmware/meson/meson_sm.c
create mode 100644 include/linux/firmware/meson/meson_sm.h
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 6664f11..686e395 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -199,5 +199,6 @@ config HAVE_ARM_SMCCC
source "drivers/firmware/broadcom/Kconfig"
source "drivers/firmware/google/Kconfig"
source "drivers/firmware/efi/Kconfig"
+source "drivers/firmware/meson/Kconfig"
endmenu
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 474bada..fc4bb09 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_QCOM_SCM_32) += qcom_scm-32.o
CFLAGS_qcom_scm-32.o :=$(call as-instr,.arch armv7-a\n.arch_extension sec,-DREQUIRES_SEC=1) -march=armv7-a
obj-y += broadcom/
+obj-y += meson/
obj-$(CONFIG_GOOGLE_FIRMWARE) += google/
obj-$(CONFIG_EFI) += efi/
obj-$(CONFIG_UEFI_CPER) += efi/
diff --git a/drivers/firmware/meson/Kconfig b/drivers/firmware/meson/Kconfig
new file mode 100644
index 0000000..fff11a3
--- /dev/null
+++ b/drivers/firmware/meson/Kconfig
@@ -0,0 +1,8 @@
+#
+# Amlogic Secure Monitor driver
+#
+config MESON_SM
+ bool
+ default ARCH_MESON
+ help
+ Say y here to enable the Amlogic secure monitor driver
diff --git a/drivers/firmware/meson/Makefile b/drivers/firmware/meson/Makefile
new file mode 100644
index 0000000..9ab3884
--- /dev/null
+++ b/drivers/firmware/meson/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_MESON_SM) += meson_sm.o
diff --git a/drivers/firmware/meson/meson_sm.c b/drivers/firmware/meson/meson_sm.c
new file mode 100644
index 0000000..ef548ad
--- /dev/null
+++ b/drivers/firmware/meson/meson_sm.c
@@ -0,0 +1,312 @@
+/*
+ * Amlogic Secure Monitor driver
+ *
+ * Copyright (C) 2016 Endless Mobile, Inc.
+ * Author: Carlo Caione <carlo@endlessm.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdarg.h>
+#include <asm/cacheflush.h>
+#include <asm/compiler.h>
+#include <linux/arm-smccc.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/smp.h>
+#include <linux/firmware/meson/meson_sm.h>
+
+struct meson_sm_cmd {
+ unsigned int index;
+ u32 smc_id;
+};
+#define CMD(d, s) { .index = (d), .smc_id = (s), }
+
+struct meson_sm_chip {
+ unsigned int shmem_size;
+ u32 cmd_shmem_in_base;
+ u32 cmd_shmem_out_base;
+ struct meson_sm_cmd cmd[];
+};
+
+struct meson_sm_firmware {
+ struct device *dev;
+ const struct meson_sm_chip *chip;
+ void __iomem *sm_shmem_in_base;
+ void __iomem *sm_shmem_out_base;
+};
+
+struct meson_sm_chip gxbb_chip = {
+ .shmem_size = 0x1000,
+ .cmd_shmem_in_base = 0x82000020,
+ .cmd_shmem_out_base = 0x82000021,
+ .cmd = {
+ CMD(SM_EFUSE_READ, 0x82000030),
+ CMD(SM_EFUSE_WRITE, 0x82000031),
+ CMD(SM_EFUSE_USER_MAX, 0x82000033),
+ { /* sentinel */ },
+ },
+};
+
+static u32 meson_sm_get_cmd(const struct meson_sm_chip *chip, unsigned int cmd_index)
+{
+ unsigned int i;
+
+ for (i = 0; chip->cmd[i].smc_id; i++)
+ if (chip->cmd[i].index == cmd_index)
+ return chip->cmd[i].smc_id;
+
+ return 0;
+}
+
+static u32 __meson_sm_call(u32 cmd, u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4)
+{
+ struct arm_smccc_res res;
+
+ arm_smccc_smc(cmd, arg0, arg1, arg2, arg3, arg4, 0, 0, &res);
+ return res.a0;
+}
+
+static void __iomem *meson_sm_map_shmem(u32 cmd_shmem, unsigned int size)
+{
+ u32 sm_phy_base;
+
+ sm_phy_base = __meson_sm_call(cmd_shmem, 0, 0, 0, 0, 0);
+ if (!sm_phy_base)
+ return 0;
+
+ return ioremap_cache(sm_phy_base, size);
+}
+
+/**
+ * meson_sm_call - generic SMC32 call to the secure-monitor
+ *
+ * @fw: Meson secure-monitor firmware pointer
+ * @cmd_index: Index of the SMC32 function ID
+ * @ret: Returned value
+ * @arg0: SMC32 Argument 0
+ * @arg1: SMC32 Argument 1
+ * @arg2: SMC32 Argument 2
+ * @arg3: SMC32 Argument 3
+ * @arg4: SMC32 Argument 4
+ *
+ * Return: 0 on success, a negative value on error
+ */
+int meson_sm_call(struct meson_sm_firmware *fw, unsigned int cmd_index,
+ u32 *ret, u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4)
+{
+ u32 cmd, lret;
+
+ if (!fw)
+ return -EINVAL;
+
+ cmd = meson_sm_get_cmd(fw->chip, cmd_index);
+ if (!cmd)
+ return -EINVAL;
+
+ lret = __meson_sm_call(cmd, arg0, arg1, arg2, arg3, arg4);
+
+ if (ret)
+ *ret = lret;
+
+ return 0;
+}
+EXPORT_SYMBOL(meson_sm_call);
+
+/**
+ * meson_sm_call_read - retrieve data from secure-monitor
+ *
+ * @fw: Meson secure-monitor firmware pointer
+ * @buffer: Buffer to store the retrieved data
+ * @cmd_index: Index of the SMC32 function ID
+ * @arg0: SMC32 Argument 0
+ * @arg1: SMC32 Argument 1
+ * @arg2: SMC32 Argument 2
+ * @arg3: SMC32 Argument 3
+ * @arg4: SMC32 Argument 4
+ *
+ * Return: size of read data on success, a negative value on error
+ */
+int meson_sm_call_read(struct meson_sm_firmware *fw, void *buffer,
+ unsigned int cmd_index, u32 arg0, u32 arg1,
+ u32 arg2, u32 arg3, u32 arg4)
+{
+ u32 size;
+
+ if (!fw->chip->cmd_shmem_out_base)
+ return -EINVAL;
+
+ if (meson_sm_call(fw, cmd_index, &size, arg0, arg1, arg2, arg3, arg4) < 0)
+ return -EINVAL;
+
+ if (!size || size > fw->chip->shmem_size)
+ return -EINVAL;
+
+ if (buffer)
+ memcpy(buffer, fw->sm_shmem_out_base, size);
+
+ return size;
+}
+EXPORT_SYMBOL(meson_sm_call_read);
+
+/**
+ * meson_sm_call_write - send data to secure-monitor
+ *
+ * @fw: Meson secure-monitor firmware pointer
+ * @buffer: Buffer containing data to send
+ * @b_size: Size of the data to send
+ * @cmd_index: Index of the SMC32 function ID
+ * @arg0: SMC32 Argument 0
+ * @arg1: SMC32 Argument 1
+ * @arg2: SMC32 Argument 2
+ * @arg3: SMC32 Argument 3
+ * @arg4: SMC32 Argument 4
+ *
+ * Return: size of sent data on success, a negative value on error
+ */
+int meson_sm_call_write(struct meson_sm_firmware *fw, void *buffer,
+ unsigned int b_size, unsigned int cmd_index,
+ u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4)
+{
+ u32 size;
+
+ if (b_size > fw->chip->shmem_size)
+ return -EINVAL;
+
+ if (!fw->chip->cmd_shmem_in_base)
+ return -EINVAL;
+
+ memcpy(fw->sm_shmem_in_base, buffer, b_size);
+
+ if (meson_sm_call(fw, cmd_index, &size, arg0, arg1, arg2, arg3, arg4) < 0)
+ return -EINVAL;
+
+ if (!size)
+ return -EINVAL;
+
+ return size;
+}
+EXPORT_SYMBOL(meson_sm_call_write);
+
+/**
+ * meson_sm_get_fw - get Meson firmware struct
+ *
+ * @firmware_node: Device node of the secure-monitor
+ *
+ * Return: Meson secure-monitor firmware struct on success, NULL on error
+ */
+struct meson_sm_firmware *meson_sm_get_fw(struct device_node *firmware_node)
+{
+ struct platform_device *pdev = of_find_device_by_node(firmware_node);
+
+ /*
+ * Returns NULL is the firmware device is not ready.
+ */
+ if (!pdev)
+ return NULL;
+
+ return platform_get_drvdata(pdev);
+}
+EXPORT_SYMBOL(meson_sm_get_fw);
+
+static const struct of_device_id meson_sm_ids[] = {
+ { .compatible = "amlogic,meson-gxbb-sm", .data = &gxbb_chip },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, meson_sm_ids);
+
+static int meson_sm_probe(struct platform_device *pdev)
+{
+ const struct meson_sm_chip *chip;
+ struct meson_sm_firmware *fw;
+ struct device_node *np;
+ const struct of_device_id *matched_np;
+
+ np = of_find_matching_node_and_match(NULL, meson_sm_ids, &matched_np);
+ if (!np) {
+ dev_err(&pdev->dev, "no matching node\n");
+ return -EINVAL;
+ }
+
+ chip = matched_np->data;
+ if (!chip) {
+ dev_err(&pdev->dev, "unable to setup secure-monitor data\n");
+ return -EINVAL;
+ }
+
+ fw = devm_kzalloc(&pdev->dev, sizeof(*fw), GFP_KERNEL);
+ if (!fw)
+ return -ENOMEM;
+
+ if (chip->cmd_shmem_in_base) {
+ fw->sm_shmem_in_base = meson_sm_map_shmem(chip->cmd_shmem_in_base,
+ chip->shmem_size);
+ if (WARN_ON(!fw->sm_shmem_in_base))
+ goto out;
+ }
+
+ if (chip->cmd_shmem_out_base) {
+ fw->sm_shmem_out_base = meson_sm_map_shmem(chip->cmd_shmem_out_base,
+ chip->shmem_size);
+ if (WARN_ON(!fw->sm_shmem_out_base))
+ goto out;
+ }
+
+ fw->dev = &pdev->dev;
+ fw->chip = chip;
+ platform_set_drvdata(pdev, fw);
+
+ dev_info(fw->dev, "enabled\n");
+
+ return 0;
+
+out:
+ if (fw->sm_shmem_in_base)
+ iounmap(fw->sm_shmem_in_base);
+
+ return -EINVAL;
+}
+
+static struct platform_driver meson_sm_platform_driver = {
+ .probe = meson_sm_probe,
+ .driver = {
+ .name = "meson-sm",
+ .of_match_table = meson_sm_ids,
+ },
+};
+
+static int __init meson_sm_init(void)
+{
+ struct platform_device *meson_sm_device;
+ int ret;
+
+ ret = platform_driver_register(&meson_sm_platform_driver);
+ if (ret) {
+ pr_err("unable to register driver\n");
+ return ret;
+ }
+
+ meson_sm_device = platform_device_register_simple("meson-sm",
+ -1, NULL, 0);
+ if (IS_ERR(meson_sm_device)) {
+ pr_err("unable to register device\n");
+ platform_driver_unregister(&meson_sm_platform_driver);
+ return PTR_ERR(meson_sm_device);
+ }
+
+ return 0;
+}
+device_initcall(meson_sm_init);
+
+MODULE_AUTHOR("Carlo Caione <carlo@endlessm.com>");
+MODULE_DESCRIPTION("Amlogic secure monitor driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/firmware/meson/meson_sm.h b/include/linux/firmware/meson/meson_sm.h
new file mode 100644
index 0000000..863b231
--- /dev/null
+++ b/include/linux/firmware/meson/meson_sm.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2016 Endless Mobile, Inc.
+ * Author: Carlo Caione <carlo@endlessm.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _MESON_SM_FW_H_
+#define _MESON_SM_FW_H_
+
+#define SM_EFUSE_READ 0
+#define SM_EFUSE_WRITE 1
+#define SM_EFUSE_USER_MAX 2
+
+struct meson_sm_firmware;
+
+int meson_sm_call(struct meson_sm_firmware *fw, unsigned int cmd_index,
+ u32 *ret, u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4);
+int meson_sm_call_write(struct meson_sm_firmware *fw, void *buffer,
+ unsigned int b_size, unsigned int cmd_index,
+ u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4);
+int meson_sm_call_read(struct meson_sm_firmware *fw, void *buffer,
+ unsigned int cmd_index, u32 arg0, u32 arg1,
+ u32 arg2, u32 arg3, u32 arg4);
+struct meson_sm_firmware *meson_sm_get_fw(struct device_node *firmware_node);
+
+#endif /* _MESON_SM_FW_H_ */
--
2.7.4
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v7 1/3] firmware: Amlogic: Add secure monitor driver
@ 2016-06-10 19:44 ` Carlo Caione
0 siblings, 0 replies; 18+ messages in thread
From: Carlo Caione @ 2016-06-10 19:44 UTC (permalink / raw)
To: linus-amlogic
From: Carlo Caione <carlo@endlessm.com>
Introduce a driver to provide calls into secure monitor mode.
In the Amlogic SoCs these calls are used for multiple reasons: access to
NVMEM, set USB boot, enable JTAG, etc...
Signed-off-by: Carlo Caione <carlo@endlessm.com>
---
drivers/firmware/Kconfig | 1 +
drivers/firmware/Makefile | 1 +
drivers/firmware/meson/Kconfig | 8 +
drivers/firmware/meson/Makefile | 1 +
drivers/firmware/meson/meson_sm.c | 312 ++++++++++++++++++++++++++++++++
include/linux/firmware/meson/meson_sm.h | 32 ++++
6 files changed, 355 insertions(+)
create mode 100644 drivers/firmware/meson/Kconfig
create mode 100644 drivers/firmware/meson/Makefile
create mode 100644 drivers/firmware/meson/meson_sm.c
create mode 100644 include/linux/firmware/meson/meson_sm.h
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 6664f11..686e395 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -199,5 +199,6 @@ config HAVE_ARM_SMCCC
source "drivers/firmware/broadcom/Kconfig"
source "drivers/firmware/google/Kconfig"
source "drivers/firmware/efi/Kconfig"
+source "drivers/firmware/meson/Kconfig"
endmenu
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 474bada..fc4bb09 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_QCOM_SCM_32) += qcom_scm-32.o
CFLAGS_qcom_scm-32.o :=$(call as-instr,.arch armv7-a\n.arch_extension sec,-DREQUIRES_SEC=1) -march=armv7-a
obj-y += broadcom/
+obj-y += meson/
obj-$(CONFIG_GOOGLE_FIRMWARE) += google/
obj-$(CONFIG_EFI) += efi/
obj-$(CONFIG_UEFI_CPER) += efi/
diff --git a/drivers/firmware/meson/Kconfig b/drivers/firmware/meson/Kconfig
new file mode 100644
index 0000000..fff11a3
--- /dev/null
+++ b/drivers/firmware/meson/Kconfig
@@ -0,0 +1,8 @@
+#
+# Amlogic Secure Monitor driver
+#
+config MESON_SM
+ bool
+ default ARCH_MESON
+ help
+ Say y here to enable the Amlogic secure monitor driver
diff --git a/drivers/firmware/meson/Makefile b/drivers/firmware/meson/Makefile
new file mode 100644
index 0000000..9ab3884
--- /dev/null
+++ b/drivers/firmware/meson/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_MESON_SM) += meson_sm.o
diff --git a/drivers/firmware/meson/meson_sm.c b/drivers/firmware/meson/meson_sm.c
new file mode 100644
index 0000000..ef548ad
--- /dev/null
+++ b/drivers/firmware/meson/meson_sm.c
@@ -0,0 +1,312 @@
+/*
+ * Amlogic Secure Monitor driver
+ *
+ * Copyright (C) 2016 Endless Mobile, Inc.
+ * Author: Carlo Caione <carlo@endlessm.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdarg.h>
+#include <asm/cacheflush.h>
+#include <asm/compiler.h>
+#include <linux/arm-smccc.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/smp.h>
+#include <linux/firmware/meson/meson_sm.h>
+
+struct meson_sm_cmd {
+ unsigned int index;
+ u32 smc_id;
+};
+#define CMD(d, s) { .index = (d), .smc_id = (s), }
+
+struct meson_sm_chip {
+ unsigned int shmem_size;
+ u32 cmd_shmem_in_base;
+ u32 cmd_shmem_out_base;
+ struct meson_sm_cmd cmd[];
+};
+
+struct meson_sm_firmware {
+ struct device *dev;
+ const struct meson_sm_chip *chip;
+ void __iomem *sm_shmem_in_base;
+ void __iomem *sm_shmem_out_base;
+};
+
+struct meson_sm_chip gxbb_chip = {
+ .shmem_size = 0x1000,
+ .cmd_shmem_in_base = 0x82000020,
+ .cmd_shmem_out_base = 0x82000021,
+ .cmd = {
+ CMD(SM_EFUSE_READ, 0x82000030),
+ CMD(SM_EFUSE_WRITE, 0x82000031),
+ CMD(SM_EFUSE_USER_MAX, 0x82000033),
+ { /* sentinel */ },
+ },
+};
+
+static u32 meson_sm_get_cmd(const struct meson_sm_chip *chip, unsigned int cmd_index)
+{
+ unsigned int i;
+
+ for (i = 0; chip->cmd[i].smc_id; i++)
+ if (chip->cmd[i].index == cmd_index)
+ return chip->cmd[i].smc_id;
+
+ return 0;
+}
+
+static u32 __meson_sm_call(u32 cmd, u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4)
+{
+ struct arm_smccc_res res;
+
+ arm_smccc_smc(cmd, arg0, arg1, arg2, arg3, arg4, 0, 0, &res);
+ return res.a0;
+}
+
+static void __iomem *meson_sm_map_shmem(u32 cmd_shmem, unsigned int size)
+{
+ u32 sm_phy_base;
+
+ sm_phy_base = __meson_sm_call(cmd_shmem, 0, 0, 0, 0, 0);
+ if (!sm_phy_base)
+ return 0;
+
+ return ioremap_cache(sm_phy_base, size);
+}
+
+/**
+ * meson_sm_call - generic SMC32 call to the secure-monitor
+ *
+ * @fw: Meson secure-monitor firmware pointer
+ * @cmd_index: Index of the SMC32 function ID
+ * @ret: Returned value
+ * @arg0: SMC32 Argument 0
+ * @arg1: SMC32 Argument 1
+ * @arg2: SMC32 Argument 2
+ * @arg3: SMC32 Argument 3
+ * @arg4: SMC32 Argument 4
+ *
+ * Return: 0 on success, a negative value on error
+ */
+int meson_sm_call(struct meson_sm_firmware *fw, unsigned int cmd_index,
+ u32 *ret, u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4)
+{
+ u32 cmd, lret;
+
+ if (!fw)
+ return -EINVAL;
+
+ cmd = meson_sm_get_cmd(fw->chip, cmd_index);
+ if (!cmd)
+ return -EINVAL;
+
+ lret = __meson_sm_call(cmd, arg0, arg1, arg2, arg3, arg4);
+
+ if (ret)
+ *ret = lret;
+
+ return 0;
+}
+EXPORT_SYMBOL(meson_sm_call);
+
+/**
+ * meson_sm_call_read - retrieve data from secure-monitor
+ *
+ * @fw: Meson secure-monitor firmware pointer
+ * @buffer: Buffer to store the retrieved data
+ * @cmd_index: Index of the SMC32 function ID
+ * @arg0: SMC32 Argument 0
+ * @arg1: SMC32 Argument 1
+ * @arg2: SMC32 Argument 2
+ * @arg3: SMC32 Argument 3
+ * @arg4: SMC32 Argument 4
+ *
+ * Return: size of read data on success, a negative value on error
+ */
+int meson_sm_call_read(struct meson_sm_firmware *fw, void *buffer,
+ unsigned int cmd_index, u32 arg0, u32 arg1,
+ u32 arg2, u32 arg3, u32 arg4)
+{
+ u32 size;
+
+ if (!fw->chip->cmd_shmem_out_base)
+ return -EINVAL;
+
+ if (meson_sm_call(fw, cmd_index, &size, arg0, arg1, arg2, arg3, arg4) < 0)
+ return -EINVAL;
+
+ if (!size || size > fw->chip->shmem_size)
+ return -EINVAL;
+
+ if (buffer)
+ memcpy(buffer, fw->sm_shmem_out_base, size);
+
+ return size;
+}
+EXPORT_SYMBOL(meson_sm_call_read);
+
+/**
+ * meson_sm_call_write - send data to secure-monitor
+ *
+ * @fw: Meson secure-monitor firmware pointer
+ * @buffer: Buffer containing data to send
+ * @b_size: Size of the data to send
+ * @cmd_index: Index of the SMC32 function ID
+ * @arg0: SMC32 Argument 0
+ * @arg1: SMC32 Argument 1
+ * @arg2: SMC32 Argument 2
+ * @arg3: SMC32 Argument 3
+ * @arg4: SMC32 Argument 4
+ *
+ * Return: size of sent data on success, a negative value on error
+ */
+int meson_sm_call_write(struct meson_sm_firmware *fw, void *buffer,
+ unsigned int b_size, unsigned int cmd_index,
+ u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4)
+{
+ u32 size;
+
+ if (b_size > fw->chip->shmem_size)
+ return -EINVAL;
+
+ if (!fw->chip->cmd_shmem_in_base)
+ return -EINVAL;
+
+ memcpy(fw->sm_shmem_in_base, buffer, b_size);
+
+ if (meson_sm_call(fw, cmd_index, &size, arg0, arg1, arg2, arg3, arg4) < 0)
+ return -EINVAL;
+
+ if (!size)
+ return -EINVAL;
+
+ return size;
+}
+EXPORT_SYMBOL(meson_sm_call_write);
+
+/**
+ * meson_sm_get_fw - get Meson firmware struct
+ *
+ * @firmware_node: Device node of the secure-monitor
+ *
+ * Return: Meson secure-monitor firmware struct on success, NULL on error
+ */
+struct meson_sm_firmware *meson_sm_get_fw(struct device_node *firmware_node)
+{
+ struct platform_device *pdev = of_find_device_by_node(firmware_node);
+
+ /*
+ * Returns NULL is the firmware device is not ready.
+ */
+ if (!pdev)
+ return NULL;
+
+ return platform_get_drvdata(pdev);
+}
+EXPORT_SYMBOL(meson_sm_get_fw);
+
+static const struct of_device_id meson_sm_ids[] = {
+ { .compatible = "amlogic,meson-gxbb-sm", .data = &gxbb_chip },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, meson_sm_ids);
+
+static int meson_sm_probe(struct platform_device *pdev)
+{
+ const struct meson_sm_chip *chip;
+ struct meson_sm_firmware *fw;
+ struct device_node *np;
+ const struct of_device_id *matched_np;
+
+ np = of_find_matching_node_and_match(NULL, meson_sm_ids, &matched_np);
+ if (!np) {
+ dev_err(&pdev->dev, "no matching node\n");
+ return -EINVAL;
+ }
+
+ chip = matched_np->data;
+ if (!chip) {
+ dev_err(&pdev->dev, "unable to setup secure-monitor data\n");
+ return -EINVAL;
+ }
+
+ fw = devm_kzalloc(&pdev->dev, sizeof(*fw), GFP_KERNEL);
+ if (!fw)
+ return -ENOMEM;
+
+ if (chip->cmd_shmem_in_base) {
+ fw->sm_shmem_in_base = meson_sm_map_shmem(chip->cmd_shmem_in_base,
+ chip->shmem_size);
+ if (WARN_ON(!fw->sm_shmem_in_base))
+ goto out;
+ }
+
+ if (chip->cmd_shmem_out_base) {
+ fw->sm_shmem_out_base = meson_sm_map_shmem(chip->cmd_shmem_out_base,
+ chip->shmem_size);
+ if (WARN_ON(!fw->sm_shmem_out_base))
+ goto out;
+ }
+
+ fw->dev = &pdev->dev;
+ fw->chip = chip;
+ platform_set_drvdata(pdev, fw);
+
+ dev_info(fw->dev, "enabled\n");
+
+ return 0;
+
+out:
+ if (fw->sm_shmem_in_base)
+ iounmap(fw->sm_shmem_in_base);
+
+ return -EINVAL;
+}
+
+static struct platform_driver meson_sm_platform_driver = {
+ .probe = meson_sm_probe,
+ .driver = {
+ .name = "meson-sm",
+ .of_match_table = meson_sm_ids,
+ },
+};
+
+static int __init meson_sm_init(void)
+{
+ struct platform_device *meson_sm_device;
+ int ret;
+
+ ret = platform_driver_register(&meson_sm_platform_driver);
+ if (ret) {
+ pr_err("unable to register driver\n");
+ return ret;
+ }
+
+ meson_sm_device = platform_device_register_simple("meson-sm",
+ -1, NULL, 0);
+ if (IS_ERR(meson_sm_device)) {
+ pr_err("unable to register device\n");
+ platform_driver_unregister(&meson_sm_platform_driver);
+ return PTR_ERR(meson_sm_device);
+ }
+
+ return 0;
+}
+device_initcall(meson_sm_init);
+
+MODULE_AUTHOR("Carlo Caione <carlo@endlessm.com>");
+MODULE_DESCRIPTION("Amlogic secure monitor driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/firmware/meson/meson_sm.h b/include/linux/firmware/meson/meson_sm.h
new file mode 100644
index 0000000..863b231
--- /dev/null
+++ b/include/linux/firmware/meson/meson_sm.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2016 Endless Mobile, Inc.
+ * Author: Carlo Caione <carlo@endlessm.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _MESON_SM_FW_H_
+#define _MESON_SM_FW_H_
+
+#define SM_EFUSE_READ 0
+#define SM_EFUSE_WRITE 1
+#define SM_EFUSE_USER_MAX 2
+
+struct meson_sm_firmware;
+
+int meson_sm_call(struct meson_sm_firmware *fw, unsigned int cmd_index,
+ u32 *ret, u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4);
+int meson_sm_call_write(struct meson_sm_firmware *fw, void *buffer,
+ unsigned int b_size, unsigned int cmd_index,
+ u32 arg0, u32 arg1, u32 arg2, u32 arg3, u32 arg4);
+int meson_sm_call_read(struct meson_sm_firmware *fw, void *buffer,
+ unsigned int cmd_index, u32 arg0, u32 arg1,
+ u32 arg2, u32 arg3, u32 arg4);
+struct meson_sm_firmware *meson_sm_get_fw(struct device_node *firmware_node);
+
+#endif /* _MESON_SM_FW_H_ */
--
2.7.4
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v7 2/3] documentation: Add secure monitor binding documentation
2016-06-10 19:44 ` Carlo Caione
(?)
@ 2016-06-10 19:44 ` Carlo Caione
-1 siblings, 0 replies; 18+ messages in thread
From: Carlo Caione @ 2016-06-10 19:44 UTC (permalink / raw)
To: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-amlogic-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-6IF/jdPJHihWk0Htik3J/w, devicetree-u79uwXL29TY76Z2rM5mHXA,
khilman-rdvid1DuHRBWk0Htik3J/w, mark.rutland-5wv7dgnIgG8,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A,
matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w,
narmstrong-rdvid1DuHRBWk0Htik3J/w,
bjdooks-gM/Ye1E23mwN+BqQ9rBEUg
Cc: Carlo Caione
From: Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org>
Add the binding documentation for the Amlogic secure monitor driver.
Signed-off-by: Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org>
---
.../bindings/firmware/meson/meson_sm.txt | 27 ++++++++++++++++++++++
1 file changed, 27 insertions(+)
create mode 100644 Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
diff --git a/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
new file mode 100644
index 0000000..d017675
--- /dev/null
+++ b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
@@ -0,0 +1,27 @@
+* Amlogic Secure Monitor
+
+In the Amlogic SoCs the Secure Monitor code is used to provide access to the
+NVMEM, enable JTAG, set USB boot, etc...
+
+Required properties for the secure monitor node:
+- compatible: Should be "amlogic,meson-gxbb-sm"
+
+Example:
+
+ firmware {
+ sm: secure-monitor {
+ compatible = "amlogic,meson-gxbb-sm";
+ };
+ };
+
+Example of the node using the secure monitor:
+
+ efuse: efuse {
+ compatible = "amlogic,meson-gxbb-efuse";
+ secure-monitor = <&sm>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ ...
+ };
+
--
2.7.4
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v7 2/3] documentation: Add secure monitor binding documentation
@ 2016-06-10 19:44 ` Carlo Caione
0 siblings, 0 replies; 18+ messages in thread
From: Carlo Caione @ 2016-06-10 19:44 UTC (permalink / raw)
To: linux-arm-kernel
From: Carlo Caione <carlo@endlessm.com>
Add the binding documentation for the Amlogic secure monitor driver.
Signed-off-by: Carlo Caione <carlo@endlessm.com>
---
.../bindings/firmware/meson/meson_sm.txt | 27 ++++++++++++++++++++++
1 file changed, 27 insertions(+)
create mode 100644 Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
diff --git a/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
new file mode 100644
index 0000000..d017675
--- /dev/null
+++ b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
@@ -0,0 +1,27 @@
+* Amlogic Secure Monitor
+
+In the Amlogic SoCs the Secure Monitor code is used to provide access to the
+NVMEM, enable JTAG, set USB boot, etc...
+
+Required properties for the secure monitor node:
+- compatible: Should be "amlogic,meson-gxbb-sm"
+
+Example:
+
+ firmware {
+ sm: secure-monitor {
+ compatible = "amlogic,meson-gxbb-sm";
+ };
+ };
+
+Example of the node using the secure monitor:
+
+ efuse: efuse {
+ compatible = "amlogic,meson-gxbb-efuse";
+ secure-monitor = <&sm>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ ...
+ };
+
--
2.7.4
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v7 2/3] documentation: Add secure monitor binding documentation
@ 2016-06-10 19:44 ` Carlo Caione
0 siblings, 0 replies; 18+ messages in thread
From: Carlo Caione @ 2016-06-10 19:44 UTC (permalink / raw)
To: linus-amlogic
From: Carlo Caione <carlo@endlessm.com>
Add the binding documentation for the Amlogic secure monitor driver.
Signed-off-by: Carlo Caione <carlo@endlessm.com>
---
.../bindings/firmware/meson/meson_sm.txt | 27 ++++++++++++++++++++++
1 file changed, 27 insertions(+)
create mode 100644 Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
diff --git a/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
new file mode 100644
index 0000000..d017675
--- /dev/null
+++ b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
@@ -0,0 +1,27 @@
+* Amlogic Secure Monitor
+
+In the Amlogic SoCs the Secure Monitor code is used to provide access to the
+NVMEM, enable JTAG, set USB boot, etc...
+
+Required properties for the secure monitor node:
+- compatible: Should be "amlogic,meson-gxbb-sm"
+
+Example:
+
+ firmware {
+ sm: secure-monitor {
+ compatible = "amlogic,meson-gxbb-sm";
+ };
+ };
+
+Example of the node using the secure monitor:
+
+ efuse: efuse {
+ compatible = "amlogic,meson-gxbb-efuse";
+ secure-monitor = <&sm>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ ...
+ };
+
--
2.7.4
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v7 3/3] ARM64: dts: amlogic: gxbb: Enable secure monitor
2016-06-10 19:44 ` Carlo Caione
(?)
@ 2016-06-10 19:44 ` Carlo Caione
-1 siblings, 0 replies; 18+ messages in thread
From: Carlo Caione @ 2016-06-10 19:44 UTC (permalink / raw)
To: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-amlogic-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-6IF/jdPJHihWk0Htik3J/w, devicetree-u79uwXL29TY76Z2rM5mHXA,
khilman-rdvid1DuHRBWk0Htik3J/w, mark.rutland-5wv7dgnIgG8,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A,
matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w,
narmstrong-rdvid1DuHRBWk0Htik3J/w,
bjdooks-gM/Ye1E23mwN+BqQ9rBEUg
Cc: Carlo Caione
From: Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org>
Add the secure monitor node in the Amlogic Meson GXBB DTSI file to
enable it.
Signed-off-by: Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org>
---
arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
index 76b3b6d..092f10e 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
@@ -123,6 +123,12 @@
#size-cells = <2>;
ranges;
+ firmware {
+ sm: secure-monitor {
+ compatible = "amlogic,meson-gxbb-sm";
+ };
+ };
+
cbus: cbus@c1100000 {
compatible = "simple-bus";
reg = <0x0 0xc1100000 0x0 0x100000>;
--
2.7.4
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v7 3/3] ARM64: dts: amlogic: gxbb: Enable secure monitor
@ 2016-06-10 19:44 ` Carlo Caione
0 siblings, 0 replies; 18+ messages in thread
From: Carlo Caione @ 2016-06-10 19:44 UTC (permalink / raw)
To: linux-arm-kernel
From: Carlo Caione <carlo@endlessm.com>
Add the secure monitor node in the Amlogic Meson GXBB DTSI file to
enable it.
Signed-off-by: Carlo Caione <carlo@endlessm.com>
---
arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
index 76b3b6d..092f10e 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
@@ -123,6 +123,12 @@
#size-cells = <2>;
ranges;
+ firmware {
+ sm: secure-monitor {
+ compatible = "amlogic,meson-gxbb-sm";
+ };
+ };
+
cbus: cbus at c1100000 {
compatible = "simple-bus";
reg = <0x0 0xc1100000 0x0 0x100000>;
--
2.7.4
^ permalink raw reply related [flat|nested] 18+ messages in thread
* [PATCH v7 3/3] ARM64: dts: amlogic: gxbb: Enable secure monitor
@ 2016-06-10 19:44 ` Carlo Caione
0 siblings, 0 replies; 18+ messages in thread
From: Carlo Caione @ 2016-06-10 19:44 UTC (permalink / raw)
To: linus-amlogic
From: Carlo Caione <carlo@endlessm.com>
Add the secure monitor node in the Amlogic Meson GXBB DTSI file to
enable it.
Signed-off-by: Carlo Caione <carlo@endlessm.com>
---
arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
index 76b3b6d..092f10e 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
@@ -123,6 +123,12 @@
#size-cells = <2>;
ranges;
+ firmware {
+ sm: secure-monitor {
+ compatible = "amlogic,meson-gxbb-sm";
+ };
+ };
+
cbus: cbus at c1100000 {
compatible = "simple-bus";
reg = <0x0 0xc1100000 0x0 0x100000>;
--
2.7.4
^ permalink raw reply related [flat|nested] 18+ messages in thread
* Re: [PATCH v7 2/3] documentation: Add secure monitor binding documentation
2016-06-10 19:44 ` Carlo Caione
(?)
@ 2016-06-14 20:10 ` Rob Herring
-1 siblings, 0 replies; 18+ messages in thread
From: Rob Herring @ 2016-06-14 20:10 UTC (permalink / raw)
To: Carlo Caione
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-amlogic-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-6IF/jdPJHihWk0Htik3J/w, devicetree-u79uwXL29TY76Z2rM5mHXA,
khilman-rdvid1DuHRBWk0Htik3J/w, mark.rutland-5wv7dgnIgG8,
matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w,
narmstrong-rdvid1DuHRBWk0Htik3J/w,
bjdooks-gM/Ye1E23mwN+BqQ9rBEUg, Carlo Caione
On Fri, Jun 10, 2016 at 09:44:10PM +0200, Carlo Caione wrote:
> From: Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org>
>
> Add the binding documentation for the Amlogic secure monitor driver.
>
> Signed-off-by: Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org>
> ---
> .../bindings/firmware/meson/meson_sm.txt | 27 ++++++++++++++++++++++
> 1 file changed, 27 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
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More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH v7 2/3] documentation: Add secure monitor binding documentation
@ 2016-06-14 20:10 ` Rob Herring
0 siblings, 0 replies; 18+ messages in thread
From: Rob Herring @ 2016-06-14 20:10 UTC (permalink / raw)
To: linux-arm-kernel
On Fri, Jun 10, 2016 at 09:44:10PM +0200, Carlo Caione wrote:
> From: Carlo Caione <carlo@endlessm.com>
>
> Add the binding documentation for the Amlogic secure monitor driver.
>
> Signed-off-by: Carlo Caione <carlo@endlessm.com>
> ---
> .../bindings/firmware/meson/meson_sm.txt | 27 ++++++++++++++++++++++
> 1 file changed, 27 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
Acked-by: Rob Herring <robh@kernel.org>
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH v7 2/3] documentation: Add secure monitor binding documentation
@ 2016-06-14 20:10 ` Rob Herring
0 siblings, 0 replies; 18+ messages in thread
From: Rob Herring @ 2016-06-14 20:10 UTC (permalink / raw)
To: linus-amlogic
On Fri, Jun 10, 2016 at 09:44:10PM +0200, Carlo Caione wrote:
> From: Carlo Caione <carlo@endlessm.com>
>
> Add the binding documentation for the Amlogic secure monitor driver.
>
> Signed-off-by: Carlo Caione <carlo@endlessm.com>
> ---
> .../bindings/firmware/meson/meson_sm.txt | 27 ++++++++++++++++++++++
> 1 file changed, 27 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
Acked-by: Rob Herring <robh@kernel.org>
^ permalink raw reply [flat|nested] 18+ messages in thread
* Re: [PATCH v7 1/3] firmware: Amlogic: Add secure monitor driver
2016-06-10 19:44 ` Carlo Caione
(?)
@ 2016-06-16 6:06 ` Carlo Caione
-1 siblings, 0 replies; 18+ messages in thread
From: Carlo Caione @ 2016-06-16 6:06 UTC (permalink / raw)
To: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-amlogic-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-6IF/jdPJHihWk0Htik3J/w, devicetree-u79uwXL29TY76Z2rM5mHXA,
khilman-rdvid1DuHRBWk0Htik3J/w, mark.rutland-5wv7dgnIgG8,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A,
matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w,
narmstrong-rdvid1DuHRBWk0Htik3J/w,
bjdooks-gM/Ye1E23mwN+BqQ9rBEUg
On 10/06/16 21:44, Carlo Caione wrote:
> From: Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org>
>
> Introduce a driver to provide calls into secure monitor mode.
>
> In the Amlogic SoCs these calls are used for multiple reasons: access to
> NVMEM, set USB boot, enable JTAG, etc...
>
> Signed-off-by: Carlo Caione <carlo-6IF/jdPJHihWk0Htik3J/w@public.gmane.org>
Ping?
--
Carlo Caione
--
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^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH v7 1/3] firmware: Amlogic: Add secure monitor driver
@ 2016-06-16 6:06 ` Carlo Caione
0 siblings, 0 replies; 18+ messages in thread
From: Carlo Caione @ 2016-06-16 6:06 UTC (permalink / raw)
To: linux-arm-kernel
On 10/06/16 21:44, Carlo Caione wrote:
> From: Carlo Caione <carlo@endlessm.com>
>
> Introduce a driver to provide calls into secure monitor mode.
>
> In the Amlogic SoCs these calls are used for multiple reasons: access to
> NVMEM, set USB boot, enable JTAG, etc...
>
> Signed-off-by: Carlo Caione <carlo@endlessm.com>
Ping?
--
Carlo Caione
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH v7 1/3] firmware: Amlogic: Add secure monitor driver
@ 2016-06-16 6:06 ` Carlo Caione
0 siblings, 0 replies; 18+ messages in thread
From: Carlo Caione @ 2016-06-16 6:06 UTC (permalink / raw)
To: linus-amlogic
On 10/06/16 21:44, Carlo Caione wrote:
> From: Carlo Caione <carlo@endlessm.com>
>
> Introduce a driver to provide calls into secure monitor mode.
>
> In the Amlogic SoCs these calls are used for multiple reasons: access to
> NVMEM, set USB boot, enable JTAG, etc...
>
> Signed-off-by: Carlo Caione <carlo@endlessm.com>
Ping?
--
Carlo Caione
^ permalink raw reply [flat|nested] 18+ messages in thread
end of thread, other threads:[~2016-06-16 6:06 UTC | newest]
Thread overview: 18+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-06-10 19:44 [PATCH v7 0/3] Add Amlogic secure monitor driver Carlo Caione
2016-06-10 19:44 ` Carlo Caione
2016-06-10 19:44 ` Carlo Caione
[not found] ` <1465587851-24184-1-git-send-email-carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>
2016-06-10 19:44 ` [PATCH v7 1/3] firmware: Amlogic: Add " Carlo Caione
2016-06-10 19:44 ` Carlo Caione
2016-06-10 19:44 ` Carlo Caione
[not found] ` <1465587851-24184-2-git-send-email-carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>
2016-06-16 6:06 ` Carlo Caione
2016-06-16 6:06 ` Carlo Caione
2016-06-16 6:06 ` Carlo Caione
2016-06-10 19:44 ` [PATCH v7 2/3] documentation: Add secure monitor binding documentation Carlo Caione
2016-06-10 19:44 ` Carlo Caione
2016-06-10 19:44 ` Carlo Caione
[not found] ` <1465587851-24184-3-git-send-email-carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>
2016-06-14 20:10 ` Rob Herring
2016-06-14 20:10 ` Rob Herring
2016-06-14 20:10 ` Rob Herring
2016-06-10 19:44 ` [PATCH v7 3/3] ARM64: dts: amlogic: gxbb: Enable secure monitor Carlo Caione
2016-06-10 19:44 ` Carlo Caione
2016-06-10 19:44 ` Carlo Caione
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