f7d2df2a8a
In locore, we must detect and handle different arguments passed by loader(8) compared to what we recieve when booting directly via SBI firmware. Currently we receive the hart ID in a0 and a pointer to the device tree blob in a1. loader(8) provides only a pointer to its metadata in a0. The solution to this is to add an additional entry point, _alt_start. This will be placed first in the .text section, so SBI firmware will enter here, and jump to the common pagetable setup shortly after. Since loader(8) understands our ELF kernel, it will enter at the ELF's entry address, which points to _start. This approach leads to very little guesswork as to which way we booted. Fix-up initriscv() to parse the loader's metadata, continuing to use fake_preload_metadata() in the SBI direct boot case. Reviewed by: markj, jrtc27 (asm portion) Differential Revision: https://reviews.freebsd.org/D24912 |
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bin | ||
cddl | ||
contrib | ||
crypto | ||
etc | ||
gnu | ||
include | ||
kerberos5 | ||
lib | ||
libexec | ||
release | ||
rescue | ||
sbin | ||
secure | ||
share | ||
stand | ||
sys | ||
targets | ||
tests | ||
tools | ||
usr.bin | ||
usr.sbin | ||
.arcconfig | ||
.arclint | ||
.cirrus.yml | ||
.clang-format | ||
.gitattributes | ||
.gitignore | ||
COPYRIGHT | ||
LOCKS | ||
MAINTAINERS | ||
Makefile | ||
Makefile.inc1 | ||
Makefile.libcompat | ||
Makefile.sys.inc | ||
ObsoleteFiles.inc | ||
README | ||
README.md | ||
RELNOTES | ||
UPDATING |
FreeBSD Source:
This is the top level of the FreeBSD source directory. This file
was last revised on:
FreeBSD
FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.
For copyright information, please see the file COPYRIGHT in this directory. Additional copyright information also exists for some sources in this tree - please see the specific source directories for more information.
The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7), config(8), https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html, and https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information, including setting make(1) variables.
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and Distribution License.
contrib Packages contributed by 3rd parties.
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gnu Various commands and libraries under the GNU Public License.
Please see gnu/COPYING* for more information.
include System include files.
kerberos5 Kerberos5 (Heimdal) package.
lib System libraries.
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release Release building Makefile & associated tools.
rescue Build system for statically linked /rescue utilities.
sbin System commands.
secure Cryptographic libraries and commands.
share Shared resources.
stand Boot loader sources.
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used in release builds. NOTES contains documentation of
all possible entries.
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