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/Documentation/devicetree/bindings/mtd/partitions/
Dfixed-partitions.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/mtd/partitions/fixed-partitions.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
12 on-flash partition table such as RedBoot.
14 The partition table should be a node named "partitions". Partitions are then
18 - Rafał Miłecki <rafal@milecki.pl>
23 - const: fixed-partitions
24 - items:
25 - const: sercomm,sc-partitions
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Dpartition.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/mtd/partitions/partition.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Partition
10 This binding describes a single flash partition. Each partition must have its
11 relative offset and size specified. Depending on partition function extra
14 A partition may be dynamically allocated by a specific parser at runtime.
16 Everything after 'partition-' will be used as the partition name to compare
18 If the partition contains invalid char a label can be provided that will
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Du-boot.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/mtd/partitions/u-boot.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: U-Boot bootloader partition
10 U-Boot is a bootloader commonly used in embedded devices. It's almost always
17 - Rafał Miłecki <rafal@milecki.pl>
20 - $ref: partition.yaml#
25 - const: brcm,u-boot
27 Broadcom stores environment variables inside a U-Boot partition. They
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Dqcom,smem-part.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/mtd/partitions/qcom,smem-part.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Qualcomm SMEM NAND flash partition parser
10 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
14 Memory (SMEM) based partition table scheme. The maximum partitions supported
15 varies between partition table revisions. V3 supports maximum 16 partitions
22 const: qcom,smem-part
25 "^partition-[0-9a-z]+$":
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Dlinksys,ns-partitions.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/mtd/partitions/linksys,ns-partitions.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
19 - Rafał Miłecki <rafal@milecki.pl>
25 const: linksys,ns-partitions
27 "#address-cells":
30 "#size-cells":
34 "^partition@[0-9a-f]+$":
35 $ref: partition.yaml#
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Dbrcm,bcm4908-partitions.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/mtd/partitions/brcm,bcm4908-partitions.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
18 - Rafał Miłecki <rafal@milecki.pl>
24 const: brcm,bcm4908-partitions
26 "#address-cells":
29 "#size-cells":
33 "^partition@[0-9a-f]+$":
34 $ref: partition.yaml#
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Dseama.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
9 description: The SEAttle iMAge (SEAMA) partition is a type of partition
11 D-Link routers such as DIR-645, DIR-842, DIR-859, DIR-860L, DIR-885L,
12 DIR890L and DCH-M225, as well as in WD and NEC routers on the ath79
13 (MIPS), Broadcom BCM53xx, and RAMIPS platforms. This partition type
18 - $ref: partition.yaml#
21 - Linus Walleij <linus.walleij@linaro.org>
28 - compatible
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Dbinman.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 This corresponds to a binman 'entry'. It is a single partition which holds
14 partition. There are quite a number of binman-specific entry types, such as
18 - Simon Glass <sjg@chromium.org>
21 - $ref: /schemas/mtd/partitions/partition.yaml#
26 - u-boot # u-boot.bin from U-Boot project
27 - tfa-bl31 # bl31.bin or bl31.elf from TF-A project
30 - compatible
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Dbrcm,bcm963xx-cfe-nor-partitions.txt6 NVRAM partition, and the remainder in-between for one to two firmware partitions
7 at fixed offsets. A valid firmware partition is identified by the ImageTag
9 kernel offsets and sizes within the firmware partition.
12 - compatible : must be "brcm,bcm963xx-cfe-nor-partitions"
17 compatible = "cfi-flash";
19 bank-width = <2>;
22 compatible = "brcm,bcm963xx-cfe-nor-partitions";
Dpartitions.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 node. All partition parsers must be referenced here.
14 - Miquel Raynal <miquel.raynal@bootlin.com>
17 - $ref: arm,arm-firmware-suite.yaml
18 - $ref: brcm,bcm4908-partitions.yaml
19 - $ref: brcm,bcm947xx-cfe-partitions.yaml
20 - $ref: fixed-partitions.yaml
21 - $ref: linksys,ns-partitions.yaml
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Dbrcm,bcm963xx-imagetag.txt1 Broadcom BCM963XX ImageTag Partition Container
5 partitions or non standard bootloader partition sizes. For these a mixed layout
6 needs to be used with an explicit firmware partition.
12 - compatible : must be "brcm,bcm963xx-imagetag"
17 compatible = "cfi-flash";
19 bank-width = <2>;
22 compatible = "fixed-partitions";
23 #address-cells = <1>;
24 #size-cells = <1>;
28 read-only;
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Dbrcm,trx.txt1 Broadcom TRX Container Partition
13 Container can hold up to 4 partitions. The first partition has to contain a
18 TRX doesn't enforce any strict partition boundaries or size limits. All
29 - compatible : (required) must be "brcm,trx"
33 - brcm,trx-magic: TRX magic, if it is different from the default magic
/Documentation/block/
Dcmdline-partition.rst2 Embedded device command line partition parsing
6 block device partition table from the kernel command line.
11 Users can easily change the partition.
15 blkdevparts=<blkdev-def>[;<blkdev-def>]
16 <blkdev-def> := <blkdev-id>:<partdef>[,<partdef>]
17 <partdef> := <size>[@<offset>](part-name)
19 <blkdev-id>
24 partition size, in bytes, such as: 512, 1m, 1G.
29 "-" is used to denote all remaining space.
32 partition start address, in bytes.
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/Documentation/misc-devices/
Dibmvmc.rst1 .. SPDX-License-Identifier: GPL-2.0+
21 https://openpowerfoundation.org/wp-content/uploads/2016/05/LoPAPR_DRAFT_v11_24March2016_cmt1.pdf
24 interface between the hypervisor and a management partition. This interface
25 is like a message passing interface. This management partition is intended
27 Console (HMC) - based system management.
31 packaged as an external tower or rack-mounted personal computer. In a
33 processor-based systems.
36 ----------------------
38 In the management partition, a management application exists which enables
43 The management application runs on a Linux logical partition on a
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/Documentation/devicetree/bindings/nvmem/layouts/
Du-boot,env.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/nvmem/layouts/u-boot,env.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: U-Boot environment variables layout
10 U-Boot uses environment variables to store device parameters and
14 Data is stored using U-Boot specific formats (variant specific header and NUL
15 separated key-value pairs).
18 1. Raw flash partition
27 - Rafał Miłecki <rafal@milecki.pl>
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/Documentation/power/
Dswsusp-and-swap-files.rst11 (2) the header of a swap file is not in the first block of the partition that
13 already taken care of by the swap-handling code, but (2) has to be taken into
20 identify a swap file swsusp uses the name of the partition that holds the file
21 and the offset from the beginning of the partition at which the swap file's
35 offset, in <PAGE_SIZE> units, from the beginning of the partition which
42 where <swap_file_partition> is the partition on which the swap file is located
50 Use a userland suspend application that will set the partition and offset
52 Documentation/power/userland-swsusp.rst (this is the only method to suspend
57 partition. In particular, the swap file has to be active (ie. be present in
Duserland-swsusp.rst81 allocate a swap page from the resume partition
90 set the resume partition and the offset (in <PAGE_SIZE>
91 units) from the beginning of the partition at which the swap header is
96 swap files (see Documentation/power/swsusp-and-swap-files.rst for
109 immediately enter the suspend-to-RAM state, so this call must always
112 is needed to implement the suspend-to-both mechanism in which the
121 - you cannot read() more than one virtual memory page at a time
122 - read()s across page boundaries are impossible (ie. if you read() 1/2 of
137 snapshot image from/to the kernel will use a swap partition, called the resume
138 partition, or a swap file as storage space (if a swap file is used, the resume
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/Documentation/devicetree/bindings/mtd/
Dorion-nand.txt4 - compatible : "marvell,orion-nand".
5 - reg : Base physical address of the NAND and length of memory mapped
9 - cle : Address line number connected to CLE. Default is 0
10 - ale : Address line number connected to ALE. Default is 1
11 - bank-width : Width in bytes of the device. Default is 1
12 - chip-delay : Chip dependent delay for transferring data from array to read
15 The device tree may optionally contain sub-nodes describing partitions of the
21 #address-cells = <1>;
22 #size-cells = <1>;
25 bank-width = <1>;
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Dibm,ndfc.txt4 - compatible : "ibm,ndfc".
5 - reg : should specify chip select and size used for the chip (0x2000).
8 - ccr : NDFC config and control register value (default 0).
9 - bank-settings : NDFC bank configuration register value (default 0).
12 - partition(s) - follows the OF MTD standard for partitions
20 bank-settings = <0x80002222>;
21 #address-cells = <1>;
22 #size-cells = <1>;
25 #address-cells = <1>;
26 #size-cells = <1>;
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Dsamsung-s3c2410.txt4 - compatible : The possible values are:
5 "samsung,s3c2410-nand"
6 "samsung,s3c2412-nand"
7 "samsung,s3c2440-nand"
8 - reg : register's location and length.
9 - #address-cells, #size-cells : see nand-controller.yaml
10 - clocks : phandle to the nand controller clock
11 - clock-names : must contain "nand"
17 - nand-ecc-mode : see nand-controller.yaml
18 - nand-on-flash-bbt : see nand-controller.yaml
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Dingenic,nand.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Paul Cercueil <paul@crapouillou.net>
13 - $ref: nand-controller.yaml#
14 - $ref: /schemas/memory-controllers/ingenic,nemc-peripherals.yaml#
19 - ingenic,jz4740-nand
20 - ingenic,jz4725b-nand
21 - ingenic,jz4780-nand
25 - description: Bank number, offset and size of first attached NAND chip
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Dhisi504-nand.txt5 - compatible: Should be "hisilicon,504-nfc".
6 - reg: The first contains base physical address and size of
9 - interrupts: Interrupt number for nfc.
10 - nand-bus-width: See nand-controller.yaml.
11 - nand-ecc-mode: Support none and hw ecc mode.
12 - #address-cells: Partition address, should be set 1.
13 - #size-cells: Partition size, should be set 1.
17 - nand-ecc-strength: Number of bits to correct per ECC step.
18 - nand-ecc-step-size: Number of data bytes covered by a single ECC step.
22 - nand-ecc-strength = <16>, nand-ecc-step-size = <1024>
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/Documentation/admin-guide/
Diostats.rst56 or long-lived system; so applications should be prepared to deal with
58 int (32 bit) or unsigned long (32-bit or 64-bit, depending on your
59 machine) as noted per-field below. Unless your observations are very
63 system-wide stats you'll have to find all the devices and sum them all up.
65 Field 1 -- # of reads completed (unsigned long)
68 Field 2 -- # of reads merged, field 6 -- # of writes merged (unsigned long)
74 Field 3 -- # of sectors read (unsigned long)
77 Field 4 -- # of milliseconds spent reading (unsigned int)
81 Field 5 -- # of writes completed (unsigned long)
84 Field 6 -- # of writes merged (unsigned long)
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/Documentation/driver-api/mmc/
Dmmc-tools.rst5 There is one MMC test tools called mmc-utils, which is maintained by Ulf Hansson,
8 https://git.kernel.org/pub/scm/utils/mmc/mmc-utils.git
13 The mmc-utils tools can do the following:
15 - Print and parse extcsd data.
16 - Determine the eMMC writeprotect status.
17 - Set the eMMC writeprotect status.
18 - Set the eMMC data sector size to 4KB by disabling emulation.
19 - Create general purpose partition.
20 - Enable the enhanced user area.
21 - Enable write reliability per partition.
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/Documentation/ABI/testing/
Dsysfs-firmware-sgi_uv8 Under that directory are a number of read-only attributes::
18 is used to select arch-dependent addresses and features.
29 The partition_id entry contains the partition id.
31 machines, which each partition running a unique copy
32 of the operating system. Each partition will have a unique
33 partition id.
38 this partition is in.
59 Each hub object directory contains a number of read-only attributes::
69 If a cnode value is not applicable, the value returned will be -1.
86 If a nasid value is not applicable, the value returned will be -1.
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