| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID:
<DU0PR04MB949621BE25835C23F356DA8090CCA@DU0PR04MB9496.eurprd04.prod.outlook.com>
Date: Wed, 12 Nov 2025 06:39:45 +0000
From: Bough Chen <haibo.chen@....com>
To: Tudor Ambarus <tudor.ambarus@...aro.org>, Pratyush Yadav
<pratyush@...nel.org>, Michael Walle <mwalle@...nel.org>, Miquel Raynal
<miquel.raynal@...tlin.com>, Richard Weinberger <richard@....at>, Vignesh
Raghavendra <vigneshr@...com>
CC: "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"imx@...ts.linux.dev" <imx@...ts.linux.dev>
Subject: RE: [PATCH v2 4/5] mtd: spi-nor: micron-st: add mt35xu01gbba support
> -----Original Message-----
> From: Bough Chen <haibo.chen@....com>
> Sent: 2025年11月12日 14:36
> To: Tudor Ambarus <tudor.ambarus@...aro.org>; Pratyush Yadav
> <pratyush@...nel.org>; Michael Walle <mwalle@...nel.org>; Miquel Raynal
> <miquel.raynal@...tlin.com>; Richard Weinberger <richard@....at>; Vignesh
> Raghavendra <vigneshr@...com>
> Cc: linux-mtd@...ts.infradead.org; linux-kernel@...r.kernel.org; Bough Chen
> <haibo.chen@....com>; imx@...ts.linux.dev
> Subject: [PATCH v2 4/5] mtd: spi-nor: micron-st: add mt35xu01gbba support
>
> mt35xu01gbba is similar with mt35xu512aba, but with two dies.
> SFDP contain the wrong size, so define the size dierctly in the flash info. And it
Sorry, I forget to change the commit here, the size in SFDP is correct, will change that in next version.
Regards
Haibo Chen
> also support 8D-8D-8D mode, but SFDP lack SNOR_F_IO_MODE_EN_VOLATILE,
> so add this fixup flags here.
>
> Link:
> https://datasheet.octopart.com/MT35XU02GCBA1G12-0AAT-Micron-datasheet
> -138896808.pdf
> Signed-off-by: Haibo Chen <haibo.chen@....com>
>
> ---
> 1) This mt35xu01gbba is populated on the imx95-19x19-evk board, was
> tested at 200MHz using nxp,imx95-fspi SPI controller.
> 2) root@...95evk:~# cat /sys/bus/spi/devices/spi1.0/spi-nor/jedec_id
> 2c5b1b
> root@...95evk:~# cat /sys/bus/spi/devices/spi1.0/spi-nor/manufacturer
> micron
> root@...95evk:~# hexdump -Cv /sys/bus/spi/devices/spi1.0/spi-nor/sfdp
> 00000000 53 46 44 50 0a 01 03 ff 00 08 01 17 30 00 00 ff
> |SFDP........0...|
> 00000010 84 00 01 02 90 00 00 ff 05 01 01 06 a0 00 00 ff |................|
> 00000020 0a 00 01 08 b0 00 00 ff ff ff ff ff ff ff ff ff |................|
> 00000030 e5 20 8a ff ff ff ff 3f 00 00 00 00 00 00 00 00 |. .....?........|
> 00000040 ee ff ff ff ff ff 00 00 ff ff 00 00 0c 20 11 d8 |............. ..|
> 00000050 0f 52 00 00 39 61 99 00 87 8e 03 d3 ac a1 27 3d
> |.R..9a........'=|
> 00000060 7a 75 7a 75 fb bd d5 5c 00 00 70 ff 81 50 f8 a1
> |zuzu...\..p..P..|
> 00000070 2f cb 27 8b 00 00 04 01 00 06 01 00 ff ff ff 8e |/.'.............|
> 00000080 00 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff |................|
> 00000090 43 0e ff ff 21 dc 5c ff ff ff ff ff ff ff ff ff |C...!.\.........|
> 000000a0 00 0b 80 9e b1 81 b5 85 00 f0 ff 9f 00 0a 00 00 |................|
> 000000b0 00 0a 1a 88 10 00 00 00 ff ff ff ff ff ff ff ff |................|
> 000000c0 00 00 06 01 00 00 00 00 14 01 81 03 00 00 00 00
> |................|
> 000000d0
> root@...95evk:~# sha256sum /sys/bus/spi/devices/spi1.0/spi-nor/sfdp
>
> 3848f0bd2436d7ca1373cee33f90e09d6479d0f4dc4bfd19f6a082d9e0039495
> /sys/bus/spi/devices/spi1.0/spi-nor/sfdp
> 3) root@...95evk:~# cat /sys/kernel/debug/spi-nor/spi1.0/capabilities
> Supported read modes by the flash
> 1S-1S-1S
> opcode 0x13
> mode cycles 0
> dummy cycles 0
> 1S-1S-8S
> opcode 0x7c
> mode cycles 1
> dummy cycles 7
> 1S-8S-8S
> opcode 0xcc
> mode cycles 1
> dummy cycles 15
> 8D-8D-8D
> opcode 0xfd
> mode cycles 0
> dummy cycles 20
>
> Supported page program modes by the flash
> 1S-1S-1S
> opcode 0x12
> 8D-8D-8D
> opcode 0x12
>
> root@...95evk:~# cat /sys/kernel/debug/spi-nor/spi1.0/params
> name (null)
> id 2c 5b 1b 10 41 00
> size 128 MiB
> write size 1
> page size 256
> address nbytes 4
> flags 4B_OPCODES | HAS_4BAIT | HAS_16BIT_SR |
> IO_MODE_EN_VOLATILE | SOFT_RESET
>
> opcodes
> read 0xfd
> dummy cycles 20
> erase 0xdc
> program 0x12
> 8D extension repeat
>
> protocols
> read 8D-8D-8D
> write 8D-8D-8D
> register 8D-8D-8D
>
> erase commands
> 21 (4.00 KiB) [1]
> 5c (32.0 KiB) [2]
> dc (128 KiB) [3]
> c4 (128 MiB)
>
> sector map
> region (in hex) | erase mask | overlaid
> ------------------+------------+----------
> 00000000-07ffffff | [ 3] | no
> 4) root@...95evk:~# dd if=/dev/urandom of=./spi_test bs=1M count=2
> 2+0 records in
> 2+0 records out
> 2097152 bytes (2.1 MB, 2.0 MiB) copied, 0.0207974 s, 101 MB/s
> root@...95evk:~# mtd_debug erase /dev/mtd0 0 2097152
> Erased 2097152 bytes from address 0x00000000 in flash
> root@...95evk:~# mtd_debug read /dev/mtd0 0 2097152 spi_read
> Copied 2097152 bytes from address 0x00000000 in flash to spi_read
> root@...95evk:~# hexdump spi_read
> 0000000 ffff ffff ffff ffff ffff ffff ffff ffff
> *
> 0200000
> root@...95evk:~# sha256sum spi_read
>
> 4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5
> spi_read
> root@...95evk:~# mtd_debug write /dev/mtd0 0 2097152 spi_test
> Copied 2097152 bytes from spi_test to address 0x00000000 in flash
> root@...95evk:~# mtd_debug read /dev/mtd0 0 2097152 spi_read
> Copied 2097152 bytes from address 0x00000000 in flash to spi_read
> root@...95evk:~# sha256sum spi*
>
> 57300768c1271d4588b850dcbf4e1400f287f09b2d515eda610890456695b205
> spi_read
>
> 57300768c1271d4588b850dcbf4e1400f287f09b2d515eda610890456695b205
> spi_test
> root@...95evk:~# mtd_debug erase /dev/mtd0 0 2097152
> Erased 2097152 bytes from address 0x00000000 in flash
> root@...95evk:~# mtd_debug read /dev/mtd0 0 2097152 spi_read
> Copied 2097152 bytes from address 0x00000000 in flash to spi_read
> root@...95evk:~# sha256sum spi*
>
> 4bda3a28f4ffe603c0ec1258c0034d65a1a0d35ab7bd523a834608adabf03cc5
> spi_read
>
> 57300768c1271d4588b850dcbf4e1400f287f09b2d515eda610890456695b205
> spi_test
> root@...95evk:~# mtd_debug info /dev/mtd0
> mtd.type = MTD_NORFLASH
> mtd.flags = MTD_CAP_NORFLASH
> mtd.size = 134217728 (128M)
> mtd.erasesize = 131072 (128K)
> mtd.writesize = 1
> mtd.oobsize = 0
> regions = 0
> root@...95evk:~# flash_erase /dev/mtd0 0 0
> Erasing 131072 Kibyte @ 0 -- 100 % complete
> root@...95evk:~# mtd_debug read /dev/mtd0 0 2097152 spi_read
> Copied 2097152 bytes from address 0x00000000 in flash to spi_read
> root@...95evk:~# hexdump spi_read
> 0000000 ffff ffff ffff ffff ffff ffff ffff ffff
> *
> 0200000
> ---
> drivers/mtd/spi-nor/micron-st.c | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/drivers/mtd/spi-nor/micron-st.c b/drivers/mtd/spi-nor/micron-st.c
> index
> 4cfa89b0fc3dcc16fe47fc58c043971f4c474ba4..6d081ec176c37249e5ddb724b6
> 1bd70f68088163 100644
> --- a/drivers/mtd/spi-nor/micron-st.c
> +++ b/drivers/mtd/spi-nor/micron-st.c
> @@ -185,6 +185,11 @@ static const struct spi_nor_fixups
> mt35xu512aba_fixups = {
> .post_sfdp = mt35xu512aba_post_sfdp_fixup, };
>
> +static const struct spi_nor_fixups mt35xu01gbba_fixups = {
> + .post_sfdp = mt35xu512aba_post_sfdp_fixup,
> + .late_init = micron_st_nor_two_die_late_init, };
> +
> static const struct flash_info micron_nor_parts[] = {
> {
> /* MT35XU512ABA */
> @@ -193,6 +198,13 @@ static const struct flash_info micron_nor_parts[] = {
> .mfr_flags = USE_FSR,
> .fixup_flags = SPI_NOR_IO_MODE_EN_VOLATILE,
> .fixups = &mt35xu512aba_fixups,
> + }, {
> + /* MT35XU01GBBA */
> + .id = SNOR_ID(0x2c, 0x5b, 0x1b),
> + .sector_size = SZ_128K,
> + .mfr_flags = USE_FSR,
> + .fixup_flags = SPI_NOR_IO_MODE_EN_VOLATILE,
> + .fixups = &mt35xu01gbba_fixups,
> }, {
> .id = SNOR_ID(0x2c, 0x5b, 0x1c),
> .name = "mt35xu02g",
>
> --
> 2.34.1
Powered by blists - more mailing lists