From: "Álvaro Fernández Rojas" <noltari@gmail.com>
To: tsbogend@alpha.franken.de, f.fainelli@gmail.com,
bcm-kernel-feedback-list@broadcom.com, miquel.raynal@bootlin.com,
richard@nod.at, vigneshr@ti.com, jonas.gorski@gmail.com,
linus.walleij@linaro.org, linux-mips@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org
Cc: "Álvaro Fernández Rojas" <noltari@gmail.com>
Subject: [PATCH v2] mtd: parsers: bcm63xx: simplify CFE detection
Date: Mon, 8 Jun 2020 18:06:49 +0200 [thread overview]
Message-ID: <20200608160649.3717152-1-noltari@gmail.com> (raw)
In-Reply-To: <20200608094053.3381512-1-noltari@gmail.com>
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>
+
#define BCM963XX_CFE_BLOCK_SIZE SZ_64K /* always at least 64KiB */
#define BCM963XX_CFE_MAGIC_OFFSET 0x4e0
@@ -32,30 +35,6 @@
#define STR_NULL_TERMINATE(x) \
do { char *_str = (x); _str[sizeof(x) - 1] = 0; } while (0)
-static int bcm63xx_detect_cfe(struct mtd_info *master)
-{
- char buf[9];
- int ret;
- size_t retlen;
-
- ret = mtd_read(master, BCM963XX_CFE_VERSION_OFFSET, 5, &retlen,
- (void *)buf);
- buf[retlen] = 0;
-
- if (ret)
- return ret;
-
- if (strncmp("cfe-v", buf, 5) == 0)
- return 0;
-
- /* very old CFE's do not have the cfe-v string, so check for magic */
- ret = mtd_read(master, BCM963XX_CFE_MAGIC_OFFSET, 8, &retlen,
- (void *)buf);
- buf[retlen] = 0;
-
- return strncmp("CFE1CFE1", buf, 8);
-}
-
static int bcm63xx_read_nvram(struct mtd_info *master,
struct bcm963xx_nvram *nvram)
{
@@ -138,7 +117,7 @@ static int bcm63xx_parse_cfe_partitions(struct mtd_info *master,
struct bcm963xx_nvram *nvram = NULL;
int ret;
- if (bcm63xx_detect_cfe(master))
+ if (fw_arg3 != CFE_EPTSEAL)
return -EINVAL;
nvram = vzalloc(sizeof(*nvram));
--
2.26.2
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http://lists.infradead.org/mailman/listinfo/linux-mtd/
next prev parent reply other threads:[~2020-06-08 16:07 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-08 9:40 [PATCH 0/2] mtd: parsers: bcm63xx: simplify CFE detection 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 ` Álvaro Fernández Rojas [this message]
2020-06-11 7:55 ` [PATCH v2] " Miquel Raynal
2020-06-11 15:16 ` Álvaro Fernández Rojas
2020-06-11 15:42 ` Florian Fainelli
2020-06-11 15:46 ` Miquel Raynal
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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