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linux/arch/powerpc/boot
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Paul Mackerras aca95fb6bb powerpc/microwatt: Add SMP support 
This adds support for Microwatt systems with more than one core, and
updates the device tree for a 2-core version.

The secondary CPUs are started and sent to spin in __secondary_hold
very early on, in the platform probe function.  The reason for doing
this is so that they are there when smp_release_cpus() gets called,
which is before the platform init_smp function or even the platform
setup_arch function gets called.

Note that having two CPUs in the device tree doesn't preclude
operation with only one CPU.  The SYSCON_CPU_CTRL register has a
read-only field which indicates the number of CPU cores, so
microwatt_init_smp() will only start as many CPU cores as are present
in the system, and any extra CPU device-tree nodes will just be
ignored.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/Z5xt8aooKyXZv6Kf@thinks.paulus.ozlabs.org
2025-02-26 21:16:48 +05:30
..
dts powerpc/microwatt: Add SMP support 2025-02-26 21:16:48 +05:30
.gitignore powerpc/64: Remove maple platform 2024-10-29 23:01:52 +11:00
4xx.c powerpc/boot: Remove all 40x platforms from boot 2024-06-28 22:28:47 +10:00
4xx.h powerpc/boot: Remove all 40x platforms from boot 2024-06-28 22:28:47 +10:00
44x.h powerpc/boot: Convert more files to use SPDX tags 2022-08-26 11:02:17 +10:00
addnote.c
bamboo.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
cpm-serial.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
crt0.S powerpc/boot: Fix crt0.S current address branch form 2023-04-12 10:58:10 +10:00
crtsavres.S powerpc/64: Do not link crtsaveres.o in boot 2017-05-30 14:59:51 +10:00
cuboot-8xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cuboot-52xx.c
cuboot-83xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cuboot-85xx-cpm2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cuboot-85xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cuboot-824x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cuboot-amigaone.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cuboot-bamboo.c
cuboot-ebony.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cuboot-katmai.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cuboot-pq2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cuboot-rainier.c
cuboot-sam440ep.c
cuboot-sequoia.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
cuboot-taishan.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cuboot-warp.c
cuboot-yosemite.c
cuboot.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cuboot.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dcr.h powerpc/boot: Remove all 40x platforms from boot 2024-06-28 22:28:47 +10:00
decompress.c powerpc: boot: Fix kernel-doc param for partial_decompress 2024-05-07 23:16:13 +10:00
devtree.c powerpc/boot: Fixup device-tree on little endian 2021-06-21 21:16:32 +10:00
div64.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ebony.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
elf.h
elf_util.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ep88xc.c
ep8248e.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
epapr-wrapper.c
epapr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
fixed-head.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fixup-headers.sed powerpc/boot: Add sed script 2016-09-28 14:20:44 +10:00
fsl-soc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
fsl-soc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gamecube-head.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gamecube.c
hack-coff.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
holly.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
install.sh powerpc/boot: Add version to install filenames 2023-10-20 17:34:26 +11:00
io.h
libfdt-wrapper.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 161 2019-05-30 11:26:38 -07:00
libfdt_env.h
main.c powerpc: Fix typos 2024-05-08 00:21:30 +10:00
Makefile powerpc: Remove IBM_CELL_BLADE & SPIDER_NET references 2025-02-26 21:15:07 +05:30
microwatt.c powerpc/boot: Add a boot wrapper for Microwatt 2021-06-21 21:16:32 +10:00
mktree.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
motload-head.S
mpc8xx.c
mpc8xx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mpc52xx-psc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mvme5100.c
mvme7100.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ns16550.c powerpc/boot: Fixup device-tree on little endian 2021-06-21 21:16:32 +10:00
of.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
of.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ofconsole.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
oflib.c
opal-calls.S powerpc/64: asm use consistent global variable declaration and access 2022-09-28 19:22:12 +10:00
opal.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ops.h powerpc/boot: Convert more files to use SPDX tags 2022-08-26 11:02:17 +10:00
page.h
planetcore.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
planetcore.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ppc_asm.h powerpc/64: switch asm helpers from GOT to TOC relative addressing 2022-09-28 19:22:12 +10:00
ppcboot.h powerpc/boot: Remove all 40x platforms from boot 2024-06-28 22:28:47 +10:00
pq2.c
pq2.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ps3-head.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167 2019-05-30 11:26:39 -07:00
ps3-hvcall.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167 2019-05-30 11:26:39 -07:00
ps3.c powerpc: Fix typos 2024-05-08 00:21:30 +10:00
pseries-head.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
README powerpc: Move ppc64 boot wrapper code over to arch/powerpc 2005-11-16 13:52:21 +11:00
redboot-8xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
redboot-83xx.c
redboot.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
reg.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rs6000.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
serial.c powerpc/boot: Convert more files to use SPDX tags 2022-08-26 11:02:17 +10:00
simple_alloc.c powerpc/boot: Only free if realloc() succeeds 2024-03-03 22:20:29 +11:00
simpleboot.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
stdbool.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
stdint.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
stdio.c
stdio.h
stdlib.c
stdlib.h
string.h
string.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
swab.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
treeboot-akebono.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
treeboot-bamboo.c
treeboot-currituck.c
treeboot-ebony.c
treeboot-iss4xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
types.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ugecon.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ugecon.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
util.S powerpc/boot: Make use of REL16 relocs in powerpc/boot/util.S 2020-12-04 01:00:44 +11:00
wii-head.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
wii.c
wrapper powerpc/64: Remove maple platform 2024-10-29 23:01:52 +11:00
xz_config.h xz: remove XZ_EXTERN and extern from functions 2024-09-01 20:43:27 -07:00
zImage.coff.lds.S
zImage.lds.S powerpc/toc: Future proof kernel toc 2021-12-23 22:35:01 +11:00
zImage.ps3.lds.S powerpc/ps3: Re-align DTB in image 2021-06-10 21:44:57 +10:00

README 

To extract the kernel vmlinux, System.map, .config or initrd from the zImage binary:

objcopy -j .kernel:vmlinux -O binary zImage vmlinux.gz
objcopy -j .kernel:System.map -O binary zImage System.map.gz
objcopy -j .kernel:.config -O binary zImage config.gz
objcopy -j .kernel:initrd -O binary zImage.initrd initrd.gz


	Peter