This patch series adds support for TEE based BNXT firmware
management module and the driver changes to invoke OP-TEE
APIs to fastboot firmware and to collect crash dump.
Changes from v4:
- update Kconfig to reflect dependency on TEE driver
Vasundhara Volam (2):
bnxt_en: Add support to invoke OP-TEE API to reset firmware
bnxt_en: Add support to collect crash dump via ethtool
Vikas Gupta (1):
firmware: broadcom: add OP-TEE based BNXT f/w manager
drivers/firmware/broadcom/Kconfig | 8 +
drivers/firmware/broadcom/Makefile | 1 +
drivers/firmware/broadcom/tee_bnxt_fw.c | 279 ++++++++++++++++++
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 13 +-
drivers/net/ethernet/broadcom/bnxt/bnxt.h | 6 +
.../net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 37 ++-
.../net/ethernet/broadcom/bnxt/bnxt_ethtool.h | 2 +
include/linux/firmware/broadcom/tee_bnxt_fw.h | 14 +
8 files changed, 356 insertions(+), 4 deletions(-)
create mode 100644 drivers/firmware/broadcom/tee_bnxt_fw.c
create mode 100644 include/linux/firmware/broadcom/tee_bnxt_fw.h
base-commit: d86784fe9b037baf06a154283a4e8cff46b6fe2f
--
2.17.1
From: Vasundhara Volam <[email protected]>
In error recovery process when firmware indicates that it is
completely down, initiate a firmware reset by calling OP-TEE API.
Cc: Michael Chan <[email protected]>
Signed-off-by: Vasundhara Volam <[email protected]>
Signed-off-by: Sheetal Tigadoli <[email protected]>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 13 +++++++++++--
drivers/net/ethernet/broadcom/bnxt/bnxt.h | 3 +++
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 8cdf71f8824d..c24caaaf05ca 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -10581,14 +10581,23 @@ static void bnxt_fw_reset_writel(struct bnxt *bp, int reg_idx)
static void bnxt_reset_all(struct bnxt *bp)
{
struct bnxt_fw_health *fw_health = bp->fw_health;
- int i;
+ int i, rc;
+
+ if (bp->fw_cap & BNXT_FW_CAP_ERR_RECOVER_RELOAD) {
+#ifdef CONFIG_TEE_BNXT_FW
+ rc = tee_bnxt_fw_load();
+ if (rc)
+ netdev_err(bp->dev, "Unable to reset FW rc=%d\n", rc);
+ bp->fw_reset_timestamp = jiffies;
+#endif
+ return;
+ }
if (fw_health->flags & ERROR_RECOVERY_QCFG_RESP_FLAGS_HOST) {
for (i = 0; i < fw_health->fw_reset_seq_cnt; i++)
bnxt_fw_reset_writel(bp, i);
} else if (fw_health->flags & ERROR_RECOVERY_QCFG_RESP_FLAGS_CO_CPU) {
struct hwrm_fw_reset_input req = {0};
- int rc;
bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FW_RESET, -1, -1);
req.resp_addr = cpu_to_le64(bp->hwrm_cmd_kong_resp_dma_addr);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index d333589811a5..09437150f818 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -25,6 +25,9 @@
#include <net/dst_metadata.h>
#include <net/xdp.h>
#include <linux/dim.h>
+#ifdef CONFIG_TEE_BNXT_FW
+#include <linux/firmware/broadcom/tee_bnxt_fw.h>
+#endif
struct page_pool;
--
2.17.1
From: Vasundhara Volam <[email protected]>
Driver supports 2 types of core dumps.
1. Live dump - Firmware dump when system is up and running.
2. Crash dump - Dump which is collected during firmware crash
that can be retrieved after recovery.
Crash dump is currently supported only on specific 58800 chips
which can be retrieved using OP-TEE API only, as firmware cannot
access this region directly.
User needs to set the dump flag using following command before
initiating the dump collection:
$ ethtool -W|--set-dump eth0 N
Where N is "0" for live dump and "1" for crash dump
Command to collect the dump after setting the flag:
$ ethtool -w eth0 data Filename
v3: Modify set_dump to support even when CONFIG_TEE_BNXT_FW=n.
Also change log message to netdev_info().
Cc: Jakub Kicinski <[email protected]>
Cc: Michael Chan <[email protected]>
Signed-off-by: Vasundhara Volam <[email protected]>
Signed-off-by: Sheetal Tigadoli <[email protected]>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.h | 3 ++
.../net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 37 ++++++++++++++++++-
.../net/ethernet/broadcom/bnxt/bnxt_ethtool.h | 2 +
3 files changed, 40 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 09437150f818..3e7d1fb1b0b1 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -1807,6 +1807,9 @@ struct bnxt {
u8 num_leds;
struct bnxt_led_info leds[BNXT_MAX_LED];
+ u16 dump_flag;
+#define BNXT_DUMP_LIVE 0
+#define BNXT_DUMP_CRASH 1
struct bpf_prog *xdp_prog;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 51c140476717..f2220b826d61 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -3311,6 +3311,24 @@ static int bnxt_get_coredump(struct bnxt *bp, void *buf, u32 *dump_len)
return rc;
}
+static int bnxt_set_dump(struct net_device *dev, struct ethtool_dump *dump)
+{
+ struct bnxt *bp = netdev_priv(dev);
+
+ if (dump->flag > BNXT_DUMP_CRASH) {
+ netdev_info(dev, "Supports only Live(0) and Crash(1) dumps.\n");
+ return -EINVAL;
+ }
+
+ if (!IS_ENABLED(CONFIG_TEE_BNXT_FW) && dump->flag == BNXT_DUMP_CRASH) {
+ netdev_info(dev, "Cannot collect crash dump as TEE_BNXT_FW config option is not enabled.\n");
+ return -EOPNOTSUPP;
+ }
+
+ bp->dump_flag = dump->flag;
+ return 0;
+}
+
static int bnxt_get_dump_flag(struct net_device *dev, struct ethtool_dump *dump)
{
struct bnxt *bp = netdev_priv(dev);
@@ -3323,7 +3341,12 @@ static int bnxt_get_dump_flag(struct net_device *dev, struct ethtool_dump *dump)
bp->ver_resp.hwrm_fw_bld_8b << 8 |
bp->ver_resp.hwrm_fw_rsvd_8b;
- return bnxt_get_coredump(bp, NULL, &dump->len);
+ dump->flag = bp->dump_flag;
+ if (bp->dump_flag == BNXT_DUMP_CRASH)
+ dump->len = BNXT_CRASH_DUMP_LEN;
+ else
+ bnxt_get_coredump(bp, NULL, &dump->len);
+ return 0;
}
static int bnxt_get_dump_data(struct net_device *dev, struct ethtool_dump *dump,
@@ -3336,7 +3359,16 @@ static int bnxt_get_dump_data(struct net_device *dev, struct ethtool_dump *dump,
memset(buf, 0, dump->len);
- return bnxt_get_coredump(bp, buf, &dump->len);
+ dump->flag = bp->dump_flag;
+ if (dump->flag == BNXT_DUMP_CRASH) {
+#ifdef CONFIG_TEE_BNXT_FW
+ return tee_bnxt_copy_coredump(buf, 0, dump->len);
+#endif
+ } else {
+ return bnxt_get_coredump(bp, buf, &dump->len);
+ }
+
+ return 0;
}
void bnxt_ethtool_init(struct bnxt *bp)
@@ -3446,6 +3478,7 @@ const struct ethtool_ops bnxt_ethtool_ops = {
.set_phys_id = bnxt_set_phys_id,
.self_test = bnxt_self_test,
.reset = bnxt_reset,
+ .set_dump = bnxt_set_dump,
.get_dump_flag = bnxt_get_dump_flag,
.get_dump_data = bnxt_get_dump_data,
};
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
index b5b65b3f8534..01de7e79d14f 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h
@@ -59,6 +59,8 @@ struct hwrm_dbg_cmn_output {
#define HWRM_DBG_CMN_FLAGS_MORE 1
};
+#define BNXT_CRASH_DUMP_LEN (8 << 20)
+
#define BNXT_LED_DFLT_ENA \
(PORT_LED_CFG_REQ_ENABLES_LED0_ID | \
PORT_LED_CFG_REQ_ENABLES_LED0_STATE | \
--
2.17.1
From: Vikas Gupta <[email protected]>
This driver registers on TEE bus to interact with OP-TEE based
BNXT firmware management modules
Cc: Jakub Kicinski <[email protected]>
Reported-by: kbuild test robot <[email protected]>
Signed-off-by: Vikas Gupta <[email protected]>
Signed-off-by: Sheetal Tigadoli <[email protected]>
---
drivers/firmware/broadcom/Kconfig | 8 +
drivers/firmware/broadcom/Makefile | 1 +
drivers/firmware/broadcom/tee_bnxt_fw.c | 279 ++++++++++++++++++
include/linux/firmware/broadcom/tee_bnxt_fw.h | 14 +
4 files changed, 302 insertions(+)
create mode 100644 drivers/firmware/broadcom/tee_bnxt_fw.c
create mode 100644 include/linux/firmware/broadcom/tee_bnxt_fw.h
diff --git a/drivers/firmware/broadcom/Kconfig b/drivers/firmware/broadcom/Kconfig
index d03ed8e43ad7..8e3d355a637a 100644
--- a/drivers/firmware/broadcom/Kconfig
+++ b/drivers/firmware/broadcom/Kconfig
@@ -22,3 +22,11 @@ config BCM47XX_SPROM
In case of SoC devices SPROM content is stored on a flash used by
bootloader firmware CFE. This driver provides method to ssb and bcma
drivers to read SPROM on SoC.
+
+config TEE_BNXT_FW
+ tristate "Broadcom BNXT firmware manager"
+ depends on (ARCH_BCM_IPROC && OPTEE) || (COMPILE_TEST && TEE)
+ default ARCH_BCM_IPROC
+ help
+ This module help to manage firmware on Broadcom BNXT device. The module
+ registers on tee bus and invoke calls to manage firmware on BNXT device.
diff --git a/drivers/firmware/broadcom/Makefile b/drivers/firmware/broadcom/Makefile
index 72c7fdc20c77..17c5061c47a7 100644
--- a/drivers/firmware/broadcom/Makefile
+++ b/drivers/firmware/broadcom/Makefile
@@ -1,3 +1,4 @@
# SPDX-License-Identifier: GPL-2.0-only
obj-$(CONFIG_BCM47XX_NVRAM) += bcm47xx_nvram.o
obj-$(CONFIG_BCM47XX_SPROM) += bcm47xx_sprom.o
+obj-$(CONFIG_TEE_BNXT_FW) += tee_bnxt_fw.o
diff --git a/drivers/firmware/broadcom/tee_bnxt_fw.c b/drivers/firmware/broadcom/tee_bnxt_fw.c
new file mode 100644
index 000000000000..5b7ef89eb701
--- /dev/null
+++ b/drivers/firmware/broadcom/tee_bnxt_fw.c
@@ -0,0 +1,279 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2019 Broadcom.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sizes.h>
+#include <linux/slab.h>
+#include <linux/tee_drv.h>
+#include <linux/uuid.h>
+
+#include <linux/firmware/broadcom/tee_bnxt_fw.h>
+
+#define MAX_SHM_MEM_SZ SZ_4M
+
+#define MAX_TEE_PARAM_ARRY_MEMB 4
+
+enum ta_cmd {
+ /*
+ * TA_CMD_BNXT_FASTBOOT - boot bnxt device by copying f/w into sram
+ *
+ * param[0] unused
+ * param[1] unused
+ * param[2] unused
+ * param[3] unused
+ *
+ * Result:
+ * TEE_SUCCESS - Invoke command success
+ * TEE_ERROR_ITEM_NOT_FOUND - Corrupt f/w image found on memory
+ */
+ TA_CMD_BNXT_FASTBOOT = 0,
+
+ /*
+ * TA_CMD_BNXT_COPY_COREDUMP - copy the core dump into shm
+ *
+ * param[0] (inout memref) - Coredump buffer memory reference
+ * param[1] (in value) - value.a: offset, data to be copied from
+ * value.b: size of data to be copied
+ * param[2] unused
+ * param[3] unused
+ *
+ * Result:
+ * TEE_SUCCESS - Invoke command success
+ * TEE_ERROR_BAD_PARAMETERS - Incorrect input param
+ * TEE_ERROR_ITEM_NOT_FOUND - Corrupt core dump
+ */
+ TA_CMD_BNXT_COPY_COREDUMP = 3,
+};
+
+/**
+ * struct tee_bnxt_fw_private - OP-TEE bnxt private data
+ * @dev: OP-TEE based bnxt device.
+ * @ctx: OP-TEE context handler.
+ * @session_id: TA session identifier.
+ */
+struct tee_bnxt_fw_private {
+ struct device *dev;
+ struct tee_context *ctx;
+ u32 session_id;
+ struct tee_shm *fw_shm_pool;
+};
+
+static struct tee_bnxt_fw_private pvt_data;
+
+static void prepare_args(int cmd,
+ struct tee_ioctl_invoke_arg *arg,
+ struct tee_param *param)
+{
+ memset(arg, 0, sizeof(*arg));
+ memset(param, 0, MAX_TEE_PARAM_ARRY_MEMB * sizeof(*param));
+
+ arg->func = cmd;
+ arg->session = pvt_data.session_id;
+ arg->num_params = MAX_TEE_PARAM_ARRY_MEMB;
+
+ /* Fill invoke cmd params */
+ switch (cmd) {
+ case TA_CMD_BNXT_COPY_COREDUMP:
+ param[0].attr = TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INOUT;
+ param[0].u.memref.shm = pvt_data.fw_shm_pool;
+ param[0].u.memref.size = MAX_SHM_MEM_SZ;
+ param[0].u.memref.shm_offs = 0;
+ param[1].attr = TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INPUT;
+ break;
+ case TA_CMD_BNXT_FASTBOOT:
+ default:
+ /* Nothing to do */
+ break;
+ }
+}
+
+/**
+ * tee_bnxt_fw_load() - Load the bnxt firmware
+ * Uses an OP-TEE call to start a secure
+ * boot process.
+ * Returns 0 on success, negative errno otherwise.
+ */
+int tee_bnxt_fw_load(void)
+{
+ int ret = 0;
+ struct tee_ioctl_invoke_arg arg;
+ struct tee_param param[MAX_TEE_PARAM_ARRY_MEMB];
+
+ if (!pvt_data.ctx)
+ return -ENODEV;
+
+ prepare_args(TA_CMD_BNXT_FASTBOOT, &arg, param);
+
+ ret = tee_client_invoke_func(pvt_data.ctx, &arg, param);
+ if (ret < 0 || arg.ret != 0) {
+ dev_err(pvt_data.dev,
+ "TA_CMD_BNXT_FASTBOOT invoke failed TEE err: %x, ret:%x\n",
+ arg.ret, ret);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(tee_bnxt_fw_load);
+
+/**
+ * tee_bnxt_copy_coredump() - Copy coredump from the allocated memory
+ * Uses an OP-TEE call to copy coredump
+ * @buf: destination buffer where core dump is copied into
+ * @offset: offset from the base address of core dump area
+ * @size: size of the dump
+ *
+ * Returns 0 on success, negative errno otherwise.
+ */
+int tee_bnxt_copy_coredump(void *buf, u32 offset, u32 size)
+{
+ struct tee_ioctl_invoke_arg arg;
+ struct tee_param param[MAX_TEE_PARAM_ARRY_MEMB];
+ void *core_data;
+ u32 rbytes = size;
+ u32 nbytes = 0;
+ int ret = 0;
+
+ if (!pvt_data.ctx)
+ return -ENODEV;
+
+ prepare_args(TA_CMD_BNXT_COPY_COREDUMP, &arg, param);
+
+ while (rbytes) {
+ nbytes = rbytes;
+
+ nbytes = min_t(u32, rbytes, param[0].u.memref.size);
+
+ /* Fill additional invoke cmd params */
+ param[1].u.value.a = offset;
+ param[1].u.value.b = nbytes;
+
+ ret = tee_client_invoke_func(pvt_data.ctx, &arg, param);
+ if (ret < 0 || arg.ret != 0) {
+ dev_err(pvt_data.dev,
+ "TA_CMD_BNXT_COPY_COREDUMP invoke failed TEE err: %x, ret:%x\n",
+ arg.ret, ret);
+ return -EINVAL;
+ }
+
+ core_data = tee_shm_get_va(pvt_data.fw_shm_pool, 0);
+ if (IS_ERR(core_data)) {
+ dev_err(pvt_data.dev, "tee_shm_get_va failed\n");
+ return PTR_ERR(core_data);
+ }
+
+ memcpy(buf, core_data, nbytes);
+
+ rbytes -= nbytes;
+ buf += nbytes;
+ offset += nbytes;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(tee_bnxt_copy_coredump);
+
+static int optee_ctx_match(struct tee_ioctl_version_data *ver, const void *data)
+{
+ return (ver->impl_id == TEE_IMPL_ID_OPTEE);
+}
+
+static int tee_bnxt_fw_probe(struct device *dev)
+{
+ struct tee_client_device *bnxt_device = to_tee_client_device(dev);
+ int ret, err = -ENODEV;
+ struct tee_ioctl_open_session_arg sess_arg;
+ struct tee_shm *fw_shm_pool;
+
+ memset(&sess_arg, 0, sizeof(sess_arg));
+
+ /* Open context with TEE driver */
+ pvt_data.ctx = tee_client_open_context(NULL, optee_ctx_match, NULL,
+ NULL);
+ if (IS_ERR(pvt_data.ctx))
+ return -ENODEV;
+
+ /* Open session with Bnxt load Trusted App */
+ memcpy(sess_arg.uuid, bnxt_device->id.uuid.b, TEE_IOCTL_UUID_LEN);
+ sess_arg.clnt_login = TEE_IOCTL_LOGIN_PUBLIC;
+ sess_arg.num_params = 0;
+
+ ret = tee_client_open_session(pvt_data.ctx, &sess_arg, NULL);
+ if (ret < 0 || sess_arg.ret != 0) {
+ dev_err(dev, "tee_client_open_session failed, err: %x\n",
+ sess_arg.ret);
+ err = -EINVAL;
+ goto out_ctx;
+ }
+ pvt_data.session_id = sess_arg.session;
+
+ pvt_data.dev = dev;
+
+ fw_shm_pool = tee_shm_alloc(pvt_data.ctx, MAX_SHM_MEM_SZ,
+ TEE_SHM_MAPPED | TEE_SHM_DMA_BUF);
+ if (IS_ERR(fw_shm_pool)) {
+ tee_client_close_context(pvt_data.ctx);
+ dev_err(pvt_data.dev, "tee_shm_alloc failed\n");
+ err = PTR_ERR(fw_shm_pool);
+ goto out_sess;
+ }
+
+ pvt_data.fw_shm_pool = fw_shm_pool;
+
+ return 0;
+
+out_sess:
+ tee_client_close_session(pvt_data.ctx, pvt_data.session_id);
+out_ctx:
+ tee_client_close_context(pvt_data.ctx);
+
+ return err;
+}
+
+static int tee_bnxt_fw_remove(struct device *dev)
+{
+ tee_shm_free(pvt_data.fw_shm_pool);
+ tee_client_close_session(pvt_data.ctx, pvt_data.session_id);
+ tee_client_close_context(pvt_data.ctx);
+ pvt_data.ctx = NULL;
+
+ return 0;
+}
+
+static const struct tee_client_device_id tee_bnxt_fw_id_table[] = {
+ {UUID_INIT(0x6272636D, 0x2019, 0x0716,
+ 0x42, 0x43, 0x4D, 0x5F, 0x53, 0x43, 0x48, 0x49)},
+ {}
+};
+
+MODULE_DEVICE_TABLE(tee, tee_bnxt_fw_id_table);
+
+static struct tee_client_driver tee_bnxt_fw_driver = {
+ .id_table = tee_bnxt_fw_id_table,
+ .driver = {
+ .name = KBUILD_MODNAME,
+ .bus = &tee_bus_type,
+ .probe = tee_bnxt_fw_probe,
+ .remove = tee_bnxt_fw_remove,
+ },
+};
+
+static int __init tee_bnxt_fw_mod_init(void)
+{
+ return driver_register(&tee_bnxt_fw_driver.driver);
+}
+
+static void __exit tee_bnxt_fw_mod_exit(void)
+{
+ driver_unregister(&tee_bnxt_fw_driver.driver);
+}
+
+module_init(tee_bnxt_fw_mod_init);
+module_exit(tee_bnxt_fw_mod_exit);
+
+MODULE_AUTHOR("Vikas Gupta <[email protected]>");
+MODULE_DESCRIPTION("Broadcom bnxt firmware manager");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/firmware/broadcom/tee_bnxt_fw.h b/include/linux/firmware/broadcom/tee_bnxt_fw.h
new file mode 100644
index 000000000000..f24c82d6ef73
--- /dev/null
+++ b/include/linux/firmware/broadcom/tee_bnxt_fw.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * Copyright 2019 Broadcom.
+ */
+
+#ifndef _BROADCOM_TEE_BNXT_FW_H
+#define _BROADCOM_TEE_BNXT_FW_H
+
+#include <linux/types.h>
+
+int tee_bnxt_fw_load(void);
+int tee_bnxt_copy_coredump(void *buf, u32 offset, u32 size);
+
+#endif /* _BROADCOM_TEE_BNXT_FW_H */
--
2.17.1
On Thu, Oct 31, 2019 at 3:08 AM Sheetal Tigadoli
<[email protected]> wrote:
>
> From: Vasundhara Volam <[email protected]>
>
> In error recovery process when firmware indicates that it is
> completely down, initiate a firmware reset by calling OP-TEE API.
>
> Cc: Michael Chan <[email protected]>
> Signed-off-by: Vasundhara Volam <[email protected]>
> Signed-off-by: Sheetal Tigadoli <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
On Thu, Oct 31, 2019 at 3:09 AM Sheetal Tigadoli
<[email protected]> wrote:
>
> From: Vasundhara Volam <[email protected]>
>
> Driver supports 2 types of core dumps.
>
> 1. Live dump - Firmware dump when system is up and running.
> 2. Crash dump - Dump which is collected during firmware crash
> that can be retrieved after recovery.
> Crash dump is currently supported only on specific 58800 chips
> which can be retrieved using OP-TEE API only, as firmware cannot
> access this region directly.
>
> User needs to set the dump flag using following command before
> initiating the dump collection:
>
> $ ethtool -W|--set-dump eth0 N
>
> Where N is "0" for live dump and "1" for crash dump
>
> Command to collect the dump after setting the flag:
>
> $ ethtool -w eth0 data Filename
>
> v3: Modify set_dump to support even when CONFIG_TEE_BNXT_FW=n.
> Also change log message to netdev_info().
>
> Cc: Jakub Kicinski <[email protected]>
> Cc: Michael Chan <[email protected]>
> Signed-off-by: Vasundhara Volam <[email protected]>
> Signed-off-by: Sheetal Tigadoli <[email protected]>
Signed-off-by: Michael Chan <[email protected]>
From: Sheetal Tigadoli <[email protected]>
Date: Thu, 31 Oct 2019 15:38:49 +0530
> This patch series adds support for TEE based BNXT firmware
> management module and the driver changes to invoke OP-TEE
> APIs to fastboot firmware and to collect crash dump.
>
> Changes from v4:
> - update Kconfig to reflect dependency on TEE driver
Series applied, thanks.