From: Jan Kiszka <jan.kiszka@siemens.com>
To: Tom Rini <trini@konsulko.com>, Lokesh Vutla <lokeshvutla@ti.com>
Cc: U-Boot Mailing List <u-boot@lists.denx.de>,
Le Jin <le.jin@siemens.com>,
Bao Cheng Su <baocheng.su@siemens.com>,
Nian Gao <nian.gao@siemens.com>,
Chao Zeng <chao.zeng@siemens.com>, Simon Glass <sjg@chromium.org>
Subject: Re: [PATCH v2 4/5] watchdog: rti_wdt: Add support for loading firmware
Date: Wed, 9 Jun 2021 15:17:48 +0200 [thread overview]
Message-ID: <bbfb8b21-f753-654e-08c3-0de814bd6619@siemens.com> (raw)
In-Reply-To: <c7bbcc4c-35f1-a7b5-309e-278c9fc02640@siemens.com>
On 07.06.21 13:44, Jan Kiszka wrote:
> On 07.06.21 13:40, Tom Rini wrote:
>> On Mon, Jun 07, 2021 at 03:33:52PM +0530, Lokesh Vutla wrote:
>>> +Tom,
>>>
>>> Hi Tom,
>>>
>>> On 02/06/21 3:07 pm, Jan Kiszka wrote:
>>>> From: Jan Kiszka <jan.kiszka@siemens.com>
>>>>
>>>> To avoid the need of extra boot scripting on AM65x for loading a
>>>> watchdog firmware, add the required rproc init and loading logic for the
>>>> first R5F core to the watchdog start handler. In case the R5F cluster is
>>>> in lock-step mode, also initialize the second core. The firmware itself
>>>> is embedded into U-Boot binary to ease access to it and ensure it is
>>>> properly hashed in case of secure boot.
>>>>
>>>> One possible firmware source is https://github.com/siemens/k3-rti-wdt.
>>>>
>>>> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
>>>> ---
>>>> drivers/watchdog/Kconfig | 20 ++++++++++++
>>>> drivers/watchdog/Makefile | 5 +++
>>>> drivers/watchdog/rti_wdt.c | 58 ++++++++++++++++++++++++++++++++++-
>>>> drivers/watchdog/rti_wdt_fw.S | 20 ++++++++++++
>>>> 4 files changed, 102 insertions(+), 1 deletion(-)
>>>> create mode 100644 drivers/watchdog/rti_wdt_fw.S
>>>>
>>>> diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
>>>> index f0ff2612a6..1a1fddfe9f 100644
>>>> --- a/drivers/watchdog/Kconfig
>>>> +++ b/drivers/watchdog/Kconfig
>>>> @@ -209,6 +209,26 @@ config WDT_K3_RTI
>>>> Say Y here if you want to include support for the K3 watchdog
>>>> timer (RTI module) available in the K3 generation of processors.
>>>>
>>>> +if WDT_K3_RTI
>>>> +
>>>> +config WDT_K3_RTI_LOAD_FW
>>>> + bool "Load watchdog firmware"
>>>> + depends on REMOTEPROC
>>>> + help
>>>> + Automatically load the specified firmware image into the MCU R5F
>>>> + core 0. On the AM65x, this firmware is supposed to handle the expiry
>>>> + of the watchdog timer, typically by resetting the system.
>>>> +
>>>> +config WDT_K3_RTI_FW_FILE
>>>> + string "Watchdog firmware image file"
>>>> + default "k3-rti-wdt.fw"
>>>> + depends on WDT_K3_RTI_LOAD_FW
>>>> + help
>>>> + Firmware image to be embedded into U-Boot and loaded on watchdog
>>>> + start.
>>>
>>> I need your input on this proach. Is it okay to include the linker file unders
>>> drivers?
>>
>> Maybe? I suppose the first thing that springs to mind is why aren't we
>> using binman and including this blob (which I happily see is GPLv2)
>> similar to how we do things with x86 for one example.
>>
>
> See https://www.mail-archive.com/u-boot@lists.denx.de/msg377894.html
>
> Jan
>
Did this help to answer open questions? Otherwise, please let me know.
I'd also like to avoid that his patch alone blocks 1-3 of the series
needless - but I would also not mind getting everything in at once.
Thanks,
Jan
--
Siemens AG, T RDA IOT
Corporate Competence Center Embedded Linux
next prev parent reply other threads:[~2021-06-09 13:21 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-02 9:37 [PATCH v2 0/5] Add SIMATIC IOT2050 board support Jan Kiszka
2021-06-02 9:37 ` [PATCH v2 1/5] arm: dts: Add IOT2050 device tree files Jan Kiszka
2021-06-02 9:37 ` [PATCH v2 2/5] board: siemens: Add support for SIMATIC IOT2050 devices Jan Kiszka
2021-06-02 9:37 ` [PATCH v2 3/5] arm64: dts: ti: k3-am65-mcu: Add RTI watchdog entry Jan Kiszka
2021-06-02 9:37 ` [PATCH v2 4/5] watchdog: rti_wdt: Add support for loading firmware Jan Kiszka
2021-06-07 10:03 ` Lokesh Vutla
2021-06-07 10:20 ` Jan Kiszka
2021-06-07 11:40 ` Tom Rini
2021-06-07 11:44 ` Jan Kiszka
2021-06-09 13:17 ` Jan Kiszka [this message]
2021-06-11 13:44 ` Lokesh Vutla
2021-06-11 14:08 ` Tom Rini
2021-06-26 18:29 ` Simon Glass
2021-06-27 18:01 ` Jan Kiszka
2021-06-27 18:18 ` Simon Glass
2021-06-27 19:34 ` Tom Rini
2021-06-27 20:37 ` Simon Glass
2021-06-28 5:40 ` Jan Kiszka
2021-07-05 15:29 ` Simon Glass
2021-07-14 9:53 ` Jan Kiszka
2021-07-14 14:15 ` Simon Glass
2021-07-20 12:57 ` Jan Kiszka
2021-07-20 16:14 ` Jan Kiszka
2021-07-20 17:33 ` Simon Glass
2021-06-02 9:37 ` [PATCH v2 5/5] configs: iot2050: Enable watchdog support, but do not auto-start it Jan Kiszka
2021-06-11 14:30 ` [PATCH v2 0/5] Add SIMATIC IOT2050 board support Lokesh Vutla
2021-06-11 14:53 ` Tom Rini
2021-06-11 18:20 ` Jan Kiszka
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