diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2022-11-01 23:57:24 +0100 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2022-12-23 14:29:01 +0000 |
| commit | 4d75dbd1c1d6362c002a26a5c4e6de74b2816cdf (patch) | |
| tree | 2c396dd953e83ba55e33990cc3389129915db239 /src/arch | |
| parent | 96b49b5acbf5328ce2d317a7393db588a928926e (diff) | |
cpu/x86: Set up a separate stack for APs
APs use a lot less stack, so set up a separate stack for those in .bss.
Now that CPU_INFO_V2 is the only code path that is used, there is no
need to align stacks in c_start.S.
Change-Id: I7a681a2e3003da0400843daa5d6d6180d952abf5
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69123
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/x86/c_start.S | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/src/arch/x86/c_start.S b/src/arch/x86/c_start.S index 5b7052ef58..52aeb19b57 100644 --- a/src/arch/x86/c_start.S +++ b/src/arch/x86/c_start.S @@ -10,11 +10,9 @@ .global _estack .global _stack_size -/* Stack alignment is not enforced with rmodule loader, reserve one - * extra CPU such that alignment can be enforced on entry. */ -.align CONFIG_STACK_SIZE +.align 16 _stack: -.space (CONFIG_MAX_CPUS+1)*CONFIG_STACK_SIZE +.space CONFIG_STACK_SIZE _estack: .set _stack_size, _estack - _stack @@ -75,7 +73,7 @@ _start: /* Set new stack with enforced alignment. */ movl $_estack, %esp - andl $(~(CONFIG_STACK_SIZE-1)), %esp + andl $(0xfffffff0), %esp /* * Now we are finished. Memory is up, data is copied and |