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/openbmc/linux/Documentation/devicetree/bindings/mtd/partitions/
H A 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#
7 title: Fixed partitions
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:
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H A Dnvmem-cells.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/mtd/partitions/nvmem-cells.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 Any partition containing the compatible "nvmem-cells" will register as a
13 Nvmem binding to declare nvmem-cells can be found in:
17 - Ansuel Smith <ansuelsmth@gmail.com>
20 - $ref: /schemas/mtd/partitions/partition.yaml#
21 - $ref: /schemas/nvmem/nvmem.yaml#
25 const: nvmem-cells
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H A Dpartitions.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/mtd/partitions/partitions.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Partitions
10 This binding is generic and describes the content of the partitions container
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
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H A Dbrcm,bcm947xx-cfe-partitions.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/mtd/partitions/brcm,bcm947xx-cfe-partitions.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Broadcom BCM47xx Partitions
12 partitions without any on-flash partition table. On some devices their sizes
13 and/or meanings can also vary so fixed partitioning can't be used.
15 Discovering partitions on these devices is possible thanks to having a special
19 Most of partitions use ASCII text based magic for determining a type. More
20 complex partitions (like TRX with its HDR0 magic) may include extra header
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H A Dbrcm,bcm963xx-cfe-nor-partitions.txt1 Broadcom BCM963XX CFE Loader NOR Flash Partitions
6 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
12 - compatible : must be "brcm,bcm963xx-cfe-nor-partitions"
17 compatible = "cfi-flash";
19 bank-width = <2>;
21 partitions {
22 compatible = "brcm,bcm963xx-cfe-nor-partitions";
H A 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#
11 firmware partitions. One is used for regular booting, the other is treated as
14 This binding allows defining all fixed partitions and marking those containing
19 - Rafał Miłecki <rafal@milecki.pl>
25 const: linksys,ns-partitions
27 "#address-cells":
30 "#size-cells":
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H A 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#
10 Broadcom BCM4908 CFE bootloader supports two firmware partitions. One is used
13 This binding allows defining all fixed partitions and marking those containing
18 - Rafał Miłecki <rafal@milecki.pl>
24 const: brcm,bcm4908-partitions
26 "#address-cells":
29 "#size-cells":
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H A Dseama.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/mtd/partitions/seama.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Seattle Image Partitions
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
18 - $ref: partition.yaml#
21 - Linus Walleij <linus.walleij@linaro.org>
28 - compatible
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H A Dbrcm,bcm963xx-imagetag.txt5 partitions or non standard bootloader partition sizes. For these a mixed layout
12 - compatible : must be "brcm,bcm963xx-imagetag"
17 compatible = "cfi-flash";
19 bank-width = <2>;
21 partitions {
22 compatible = "fixed-partitions";
23 #address-cells = <1>;
24 #size-cells = <1>;
28 read-only;
33 compatible = "brcm,bcm963xx-imagetag";
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H A 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 bootlodaer 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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/openbmc/linux/drivers/mtd/parsers/
H A Dofpart_core.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Flash partitions described by the OF (or flattened) device tree
17 #include <linux/mtd/partitions.h>
60 if (!master->parent) { /* Master */ in parse_fixed_partitions()
61 ofpart_node = of_get_child_by_name(mtd_node, "partitions"); in parse_fixed_partitions()
68 …pr_debug("%s: 'partitions' subnode not found on %pOF. Trying to parse direct subnodes as partition… in parse_fixed_partitions()
69 master->name, mtd_node); in parse_fixed_partitions()
79 /* The 'partitions' subnode might be used by another parser */ in parse_fixed_partitions()
83 quirks = of_id ? of_id->data : NULL; in parse_fixed_partitions()
99 return -ENOMEM; in parse_fixed_partitions()
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/openbmc/linux/arch/arm64/boot/dts/marvell/
H A Darmada-7040-db.dts1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
8 #include <dt-bindings/gpio/gpio.h>
9 #include "armada-7040.dtsi"
13 compatible = "marvell,armada7040-db", "marvell,armada7040",
14 "marvell,armada-ap806-quad", "marvell,armada-ap806";
17 stdout-path = "serial0:115200n8";
31 cp0_exp_usb3_0_current_regulator: gpio-regulator {
32 compatible = "regulator-gpio";
33 regulator-name = "cp0-usb3-0-current-regulator";
34 regulator-type = "current";
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H A Darmada-8040-db.dts1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
8 #include <dt-bindings/gpio/gpio.h>
9 #include "armada-8040.dtsi"
13 compatible = "marvell,armada8040-db", "marvell,armada8040",
14 "marvell,armada-ap806-quad", "marvell,armada-ap806";
17 stdout-path = "serial0:115200n8";
34 cp0_reg_usb3_0_vbus: cp0-usb3-0-vbus {
35 compatible = "regulator-fixed";
36 regulator-name = "cp0-usb3h0-vbus";
37 regulator-min-microvolt = <5000000>;
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/openbmc/linux/arch/arm/boot/dts/ti/omap/
H A Dam335x-moxa-uc-2100-common.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2018 MOXA Inc. - https://www.moxa.com/
13 vbat: vbat-regulator {
14 compatible = "regulator-fixed";
17 /* Power supply provides a fixed 3.3V @3A */
18 vmmcsd_fixed: vmmcsd-regulator {
19 compatible = "regulator-fixed";
20 regulator-name = "vmmcsd_fixed";
21 regulator-min-microvolt = <3300000>;
22 regulator-max-microvolt = <3300000>;
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/openbmc/linux/drivers/mtd/
H A Dmtdpart.c1 // SPDX-License-Identifier: GPL-2.0-or-later
7 * Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org>
17 #include <linux/mtd/partitions.h>
31 kfree(mtd->name); in free_partition()
37 WARN_ON(!list_empty(&mtd->part.node)); in release_mtd_partition()
46 int wr_alignment = (parent->flags & MTD_NO_ERASE) ? in allocate_partition()
47 master->writesize : master->erasesize; in allocate_partition()
49 parent->part.size : parent->size; in allocate_partition()
57 name = kstrdup(part->name, GFP_KERNEL); in allocate_partition()
59 printk(KERN_ERR"memory allocation error while creating partitions for \"%s\"\n", in allocate_partition()
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/openbmc/linux/Documentation/devicetree/bindings/mtd/
H A Dqcom,nandc.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
15 - qcom,ipq806x-nand
16 - qcom,ipq4019-nand
17 - qcom,ipq6018-nand
18 - qcom,ipq8074-nand
19 - qcom,sdx55-nand
26 - description: Core Clock
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H A 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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H A 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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/openbmc/linux/Documentation/devicetree/bindings/nvmem/
H A Du-boot,env.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/nvmem/u-boot,env.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: U-Boot environment variables
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).
30 - Rafał Miłecki <rafal@milecki.pl>
35 - description: A standalone env data block
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/openbmc/linux/arch/arm/boot/dts/marvell/
H A Darmada-390-db.dts1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
4 * (DB-88F6920)
11 /dts-v1/;
12 #include "armada-390.dtsi"
16 compatible = "marvell,a390-db", "marvell,armada390";
19 stdout-path = "serial0:115200n8";
31 internal-regs {
34 clock-frequency = <100000>;
81 pinctrl-0 = <&spi1_pins>;
82 pinctrl-names = "default";
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H A Darmada-385-db-88f6820-amc.dts1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
4 * (DB-88F6820-AMC)
9 /dts-v1/;
10 #include "armada-385.dtsi"
12 #include <dt-bindings/gpio/gpio.h>
16 compatible = "marvell,a385-db-amc", "marvell,armada385", "marvell,armada380";
19 stdout-path = "serial0:115200n8";
40 pinctrl-names = "default";
41 pinctrl-0 = <&i2c0_pins>;
51 pinctrl-names = "default";
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/openbmc/linux/arch/arm/boot/dts/qcom/
H A Dqcom-ipq4018-jalapeno.dts1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
4 #include "qcom-ipq4019.dtsi"
5 #include <dt-bindings/gpio/gpio.h>
6 #include <dt-bindings/input/input.h>
27 bias-pull-up;
35 bias-disable;
43 drive-strength = <2>;
44 bias-disable;
50 drive-strength = <2>;
51 bias-disable;
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/openbmc/linux/arch/arm/boot/dts/broadcom/
H A Dbcm53016-meraki-mr32.dts1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
6 * Copyright (C) 2018-2020 Christian Lamparter <chunkeey@gmail.com>
9 /dts-v1/;
12 #include "bcm5301x-nand-cs0-bch8.dtsi"
13 #include <dt-bindings/leds/common.h>
33 compatible = "gpio-leds";
39 panic-indicator;
49 compatible = "gpio-keys";
51 button-restart {
58 pwm-leds {
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/openbmc/docs/architecture/code-update/
H A Demmc-storage-design.md7 Created: 2019-06-20
22 - Security: Ability to enforce read-only, verification of official/signed images
25 - Updatable: Ensure that the filesystem design allows for an effective and
28 - Simplicity: Make the system easy to understand, so that it is easy to develop,
31 - Code reuse: Try to use something that already exists instead of re-inventing
36 - The eMMC image layout and characteristics are specified in a meta layer. This
41 - Code update: Support two versions on flash. This allows a known good image to
44 - GPT partitioning for the eMMC User Data Area: This is chosen over dynamic
48 - Initramfs: An initramfs is needed to run sgdisk on first boot to move the
54 - Read-only and read-write filesystem: ext4. This is a stable and widely used
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/openbmc/linux/arch/arm/boot/dts/nxp/mxs/
H A Dimx28-lwe.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
7 /dts-v1/;
23 reg_3v3: regulator-reg-3v3 {
24 compatible = "regulator-fixed";
25 regulator-name = "3V3";
26 regulator-min-microvolt = <3300000>;
27 regulator-max-microvolt = <3300000>;
30 reg_usb_5v: regulator-reg-usb-5v {
31 compatible = "regulator-fixed";
32 regulator-name = "usb_vbus";
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