diff options
| author |   Jayachandran C <jchandra@broadcom.com> | 2014-05-09 16:35:14 +0530 |
|---|---|---|
| committer |   Ralf Baechle <ralf@linux-mips.org> | 2014-05-30 16:47:56 +0200 |
| commit | a3deecfaa36662ca2e2104be3c305236cf03efcc (patch) | |
| tree | 64c90d95f734fc75ded54103e9c94ab23e35bc71 /arch/mips/netlogic/common/smpboot.S | |
| parent | MIPS: Netlogic: Use cpumask_scnprintf for wakeup_mask (diff) | |
| download | linux-dev-a3deecfaa36662ca2e2104be3c305236cf03efcc.tar.xz linux-dev-a3deecfaa36662ca2e2104be3c305236cf03efcc.zip | |
MIPS: Netlogic: Reduce size of reset code
Update thread wakeup function to use scratch registers for saving SP and
RA. Move the register restore code needed for thread 0 to the calling
function. This reduces the size of code copied to the reset vector.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/6910/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/netlogic/common/smpboot.S')
| -rw-r--r-- | arch/mips/netlogic/common/smpboot.S | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/mips/netlogic/common/smpboot.S b/arch/mips/netlogic/common/smpboot.S index 8597657c27fc..805355b0bd05 100644 --- a/arch/mips/netlogic/common/smpboot.S +++ b/arch/mips/netlogic/common/smpboot.S @@ -54,8 +54,9 @@ .set noat .set arch=xlr /* for mfcr/mtcr, XLR is sufficient */ -FEXPORT(xlp_boot_core0_siblings) /* "Master" cpu starts from here */ - dmtc0 sp, $4, 2 /* SP saved in UserLocal */ +/* Called by the boot cpu to wake up its sibling threads */ +NESTED(xlp_boot_core0_siblings, PT_SIZE, sp) + /* CPU register contents lost when enabling threads, save them first */ SAVE_ALL sync /* find the location to which nlm_boot_siblings was relocated */ @@ -65,9 +66,12 @@ FEXPORT(xlp_boot_core0_siblings) /* "Master" cpu starts from here */ dsubu t2, t1 daddu t2, t0 /* call it */ - jr t2 + jalr t2 nop - /* not reached */ + RESTORE_ALL + jr ra + nop +END(xlp_boot_core0_siblings) NESTED(nlm_boot_secondary_cpus, 16, sp) /* Initialize CP0 Status */ |