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From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Florian Fainelli <f.fainelli@gmail.com>
Cc: "Álvaro Fernández Rojas" <noltari@gmail.com>,
	vigneshr@ti.com, richard@nod.at, linus.walleij@linaro.org,
	linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
	tsbogend@alpha.franken.de, bcm-kernel-feedback-list@broadcom.com,
	"Jonas Gorski" <jonas.gorski@gmail.com>,
	linux-mtd@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2] mtd: parsers: bcm63xx: simplify CFE detection
Date: Thu, 11 Jun 2020 17:46:05 +0200
Message-ID: <20200611174605.11fb6e84@xps13> (raw)
In-Reply-To: <715b0947-f4dd-0c04-5c52-5da06c04d665@gmail.com>


Florian Fainelli <f.fainelli@gmail.com> wrote on Thu, 11 Jun 2020
08:42:42 -0700:

> On 6/11/2020 8:16 AM, Álvaro Fernández Rojas wrote:
> > Hi Miquel,
> >   
> >> El 11 jun 2020, a las 9:55, Miquel Raynal <miquel.raynal@bootlin.com> escribió:
> >>
> >> Hi Álvaro,
> >>
> >> Álvaro Fernández Rojas <noltari@gmail.com> wrote on Mon,  8 Jun 2020
> >> 18:06:49 +0200:
> >>  
> >>> Instead of trying to parse CFE version string, which is customized by some
> >>> vendors, let's just check that "CFE1" was passed on argument 3.
> >>>
> >>> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
> >>> Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
> >>> ---
> >>> v2: use CFE_EPTSEAL definition and avoid using an additional funtion.
> >>>
> >>> drivers/mtd/parsers/bcm63xxpart.c | 29 ++++-------------------------
> >>> 1 file changed, 4 insertions(+), 25 deletions(-)
> >>>
> >>> diff --git a/drivers/mtd/parsers/bcm63xxpart.c b/drivers/mtd/parsers/bcm63xxpart.c
> >>> index 78f90c6c18fd..493a75b2f266 100644
> >>> --- a/drivers/mtd/parsers/bcm63xxpart.c
> >>> +++ b/drivers/mtd/parsers/bcm63xxpart.c
> >>> @@ -22,6 +22,9 @@
> >>> #include <linux/mtd/partitions.h>
> >>> #include <linux/of.h>
> >>>
> >>> +#include <asm/bootinfo.h>
> >>> +#include <asm/fw/cfe/cfe_api.h>  
> >>
> >> Are you sure both includes are needed?  
> > 
> > asm/bootinfo.h is needed for fw_arg3 and asm/fw/cfe/cfe_api.h is needed for CFE_EPTSEAL.
> >   
> >>
> >> I don't think it is a good habit to include asm/ headers, are you sure
> >> there is not another header doing it just fine?  
> > 
> > Both are needed unless you want to add another definition of CFE_EPTSEAL value.
> > There are currently two CFE magic definitions, the one in asm/fw/cfe/cfe_api.h and another one in bcm47xxpart.c:
> > https://github.com/torvalds/linux/blob/master/arch/mips/include/asm/fw/cfe/cfe_api.h#L28
> > https://github.com/torvalds/linux/blob/master/drivers/mtd/parsers/bcm47xxpart.c#L33  
> 
> The caveat with that approach is that this reduces the compilation
> surface to MIPS and BMIPS_GENERIC and BCM63XX only, which is a bit
> small. If we could move the CFE definitions to a shared header, and
> consolidate the value used by bcm47xxpart.c as well, that would allow us
> to build the bcm63xxpart.c file with COMPILE_TEST on other
> architectures. This does not really have functional value, but for
> maintainers like Miquel, it allows them to quickly test their entire
> drivers/mtd/ directory.

Absolutely!

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Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-08  9:40 [PATCH 0/2] " Álvaro Fernández Rojas
2020-06-08  9:40 ` [PATCH 1/2] MIPS: BCM63xx: add helper function to detect CFE Álvaro Fernández Rojas
2020-06-08  9:40 ` [PATCH 2/2] mtd: parsers: bcm63xx: simplify CFE detection Álvaro Fernández Rojas
2020-06-08 16:06 ` [PATCH v2] " Álvaro Fernández Rojas
2020-06-11  7:55   ` Miquel Raynal
2020-06-11 15:16     ` Álvaro Fernández Rojas
2020-06-11 15:42       ` Florian Fainelli
2020-06-11 15:46         ` Miquel Raynal [this message]
2020-06-11 16:14         ` Álvaro Fernández Rojas
2020-06-12  7:02           ` Miquel Raynal
2020-06-12  7:30             ` Álvaro Fernández Rojas
2020-06-12  7:33               ` Miquel Raynal
2020-06-12  7:37                 ` Álvaro Fernández Rojas
2020-06-12  7:35   ` [PATCH v3] " Álvaro Fernández Rojas
2020-06-15  8:54     ` Miquel Raynal
2020-06-15  9:17     ` [PATCH v4] " Álvaro Fernández Rojas
2020-06-15 16:30       ` Florian Fainelli
2020-06-15 17:38       ` Miquel Raynal
2020-08-14  8:56       ` Guenter Roeck
2020-09-22  3:18         ` Naresh Kamboju
2020-09-22  3:26           ` Guenter Roeck
2020-09-28 14:16             ` Miquel Raynal
2020-09-28 19:35               ` Florian Fainelli
2020-09-29 17:27               ` [PATCH] mtd: parsers: bcm63xx: Do not make it modular Florian Fainelli
2020-10-02  7:15                 ` Miquel Raynal
2020-10-11 14:14                 ` Guenter Roeck
2020-10-12  7:04                   ` Miquel Raynal
2020-10-12 13:24                     ` Guenter Roeck

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