fbos/kernel/string.S, branch mainA RISC-V operating system devoted to running fizz/buzz processes.
https://git.mssola.com/os/fbos/atom?h=main2024-11-26T21:38:35ZMove string.S to the lib directory2024-11-26T21:38:35ZMiquel Sabaté Solàmikisabate@gmail.com2024-11-26T21:38:35Zurn:sha1:053f93edecf6aa02ec29366621adf2de6522cdf3
It was weird enough to have it in the 'kernel' directory, as it's way
more fitting to have it on 'lib'.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
Move 'memcpy' to assembly2024-11-26T21:27:02ZMiquel Sabaté Solàmikisabate@gmail.com2024-11-26T21:27:02Zurn:sha1:fa8f9e9f44d47f5b2d0b4cc6a2cc8f328e0caa80
And apparently 'memmove' is not needed anymore, so we dodged a bullet
there.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
Initial parsing of the provided initrd file2024-11-21T12:09:21ZMiquel Sabaté Solàmikisabate@gmail.com2024-11-21T12:09:21Zurn:sha1:40ffc517e20c381ce8fdb3a881726a26a52e35db
We expect a CPIO archive with the 'newc' format for the initrd. Parse
this archive from the given initrd address and fetch the address for
each ELF executable while also pairing which task correspond to which
ELF.
This commit leaves to do the actual parsing of the ELF file for each
task, while also leaving some string utilities to be refined.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
string: Cleanup leading tabs2024-11-20T10:52:21ZMiquel Sabaté Solàmikisabate@gmail.com2024-11-20T10:52:21Zurn:sha1:bc649fa5a63c187d3bf1c5ec8813469e13e7b0fd
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
Fetch the initrd address from the DTB blob2024-11-20T10:43:08ZMiquel Sabaté Solàmikisabate@gmail.com2024-11-20T10:43:08Zurn:sha1:fb9627cc985912a57de8b4bedc98991e290e4075
The kernel entry has a pointer to the DTB blob as a parameter. From this
pointer we can parse the the DTB blob to find the properties
"chosen->linux,initrd-start" and "chosen->linux,initrd-start". These
properties are guaranteed to have 64-bit addresses which point where the
initrd is in memory, which we need to fetch the binaries to be loaded.
Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>