Linux mainline fork with MSM8998 patches | https://mainline.space | Currently supported devices:
OnePlus 5/5T, Xiaomi Mi 6, F(x)tec Pro¹ (2019 QX1000 model) & Sony Xperia XZ Premium (UNTESTED!)
7f852ec58a
The aspeed-smc can have multiple SPI devices attached to it in the device tree. If one of the devices is missing or failing the entire probe will fail and all MTD devices under the controller will be removed. On OpenBMC this results in a kernel panic due to missing rootfs: [ 0.538774] aspeed-smc 1e620000.spi: Using 50 MHz SPI frequency [ 0.540471] aspeed-smc 1e620000.spi: w25q01jv-iq (131072 Kbytes) [ 0.540750] aspeed-smc 1e620000.spi: CE0 window [ 0x20000000 - 0x28000000 ] 128MB [ 0.540943] aspeed-smc 1e620000.spi: CE1 window [ 0x28000000 - 0x2c000000 ] 64MB [ 0.541143] aspeed-smc 1e620000.spi: read control register: 203b0041 [ 0.581442] 5 fixed-partitions partitions found on MTD device bmc [ 0.581625] Creating 5 MTD partitions on "bmc": [ 0.581854] 0x000000000000-0x0000000e0000 : "u-boot" [ 0.584472] 0x0000000e0000-0x000000100000 : "u-boot-env" [ 0.586468] 0x000000100000-0x000000a00000 : "kernel" [ 0.588465] 0x000000a00000-0x000006000000 : "rofs" [ 0.590552] 0x000006000000-0x000008000000 : "rwfs" [ 0.592605] aspeed-smc 1e620000.spi: Using 50 MHz SPI frequency [ 0.592801] aspeed-smc 1e620000.spi: unrecognized JEDEC id bytes: 00 00 00 00 00 00 [ 0.593039] Deleting MTD partitions on "bmc": [ 0.593175] Deleting u-boot MTD partition [ 0.637929] Deleting u-boot-env MTD partition [ 0.829527] Deleting kernel MTD partition [ 0.856902] Freeing initrd memory: 1032K [ 0.866428] Deleting rofs MTD partition [ 0.906264] Deleting rwfs MTD partition [ 0.986628] aspeed-smc 1e620000.spi: Aspeed SMC probe failed -2 [ 0.986929] aspeed-smc: probe of 1e620000.spi failed with error -2 ... [ 2.936719] /dev/mtdblock: Can't open blockdev mount: mounting /dev/mtdblock on run/initramfs/ro failed: No such file or directory [ 2.963030] MTD: Couldn't look up '/dev/mtdblock': -2 mount: mounting /dev/mtdblock on run/initramfs/rw failed: No such file or directory Mounting read-write /dev/mtdblock filesystem failed. Please fix and run mount /dev/mtdblock run/initramfs/rw -t jffs2 -o rw or perform a factory reset with the clean-rwfs-filesystem option. Fatal error, triggering kernel panic! [ 3.013047] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000100 Many BMC designs have two flash chips so that they can handle a hardware failure of one of them. If one chip failed, it doesn't do any good to have redundancy if they all get removed anyhow. Improve the resilience of the probe function to handle one of the children being missing or failed. Only in the case where all children fail to probe should the controller be failed out. Signed-off-by: Patrick Williams <patrick@stwcx.xyz> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20211229143334.297305-1-patrick@stwcx.xyz |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.