[PATCH v6] remoteproc: uclass: Add methods to load firmware to rproc and boot rproc

[Tom Rini]

On Wed, Feb 28, 2024 at 05:36:45PM +0530, MD Danish Anwar wrote:

> Add APIs to set a firmware_name to a rproc and boot the rproc with the
> same firmware.
> 
> Clients can call rproc_set_firmware() API to set firmware_name for a rproc
> whereas rproc_boot() will load the firmware set by rproc_set_firmware() to
> a buffer by calling request_firmware_into_buf(). rproc_boot() will then
> load the firmware file to the remote processor and start the remote
> processor.
> 
> Also include "fs-loader.h" and make remoteproc driver select FS_LOADER in
> Kconfig so that we can call request_firmware_into_buf() from remoteproc
> driver.
> 
> Signed-off-by: MD Danish Anwar <danishanwar at ti.com>
> Acked-by: Ravi Gunasekaran <r-gunasekaran at ti.com>
> Reviewed-by: Roger Quadros <rogerq at kernel.org>
> ---
> Changes from v5 to v6:
> *) Collected Acked-by tag from Ravi Gunasekaran <r-gunasekaran at ti.com>
> *) Fixed few typos as pointed out by Roger Quadros <rogerq at kernel.org>
> *) Added if condition to check if uc_pdata->fw_name exists and free it
>    before the strndup as suggested by Roger Quadros <rogerq at kernel.org>
> 
> Changes from v4 to v5:
> *) Added Kconfig option REMOTEPROC_MAX_FW_SIZE to set max firmware size
>    that can be loaded to a rproc.
> *) Added freeing of address in rproc_boot() as pointed out by Ravi.
> *) Allocating the address at a later point in rproc_boot()
> *) Rebased on latest u-boot/master [commit 
>    9e00b6993f724da9699ef12573307afea8c19284]
> 
> Changes from v3 to v4:
> *) No functional change. Splitted the patch out of the series as suggested
>    by Nishant.
> *) Droppped the RFC tag.
> 
> v5: https://lore.kernel.org/all/20240217122602.3402774-1-danishanwar@ti.com/
> v4: https://lore.kernel.org/all/20240130063322.2345057-1-danishanwar@ti.com/
> v3: https://lore.kernel.org/all/20240124064930.1787929-4-danishanwar@ti.com/
> 
>  drivers/remoteproc/Kconfig        |   8 +++
>  drivers/remoteproc/rproc-uclass.c | 102 ++++++++++++++++++++++++++++++
>  include/remoteproc.h              |  34 ++++++++++
>  3 files changed, 144 insertions(+)
> 
> diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig
> index 781de530af..9f9877931c 100644
> --- a/drivers/remoteproc/Kconfig
> +++ b/drivers/remoteproc/Kconfig
> @@ -10,6 +10,7 @@ menu "Remote Processor drivers"
>  # All users should depend on DM
>  config REMOTEPROC
>  	bool
> +	select FS_LOADER
>  	depends on DM
>  
>  # Please keep the configuration alphabetically sorted.

Can we not make the FS_LOADER portion optional? I didn't realize how
many non-TI platforms this impacted. And even then it's possible I
assume that custom designs will load the firmwares in other manners.

-- 
Tom
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