diff options
| author | Chris Metcalf <cmetcalf@tilera.com> | 2010-10-14 16:23:03 -0400 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2010-10-15 15:38:09 -0400 |
| commit | a78c942df64ef4cf495fd4d8715e48501bd7f8a4 (patch) | |
| tree | fe44212d36e6ca23dbe9f2c633824389216a3d1d /arch/tile/kernel/head_32.S | |
| parent | bf65e440e8248f22b2eacf8d47961bb9d52260f7 (diff) | |
arch/tile: parameterize system PLs to support KVM port
While not a port to KVM (yet), this change modifies the kernel
to be able to build either at PL1 or at PL2 with a suitable
config switch. Pushing up this change avoids handling branch
merge issues going forward with the KVM work.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/kernel/head_32.S')
| -rw-r--r-- | arch/tile/kernel/head_32.S | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/tile/kernel/head_32.S b/arch/tile/kernel/head_32.S index 2b4f6c09170..90e7c443569 100644 --- a/arch/tile/kernel/head_32.S +++ b/arch/tile/kernel/head_32.S @@ -23,6 +23,7 @@ #include <asm/asm-offsets.h> #include <hv/hypervisor.h> #include <arch/chip.h> +#include <arch/spr_def.h> /* * This module contains the entry code for kernel images. It performs the @@ -76,7 +77,7 @@ ENTRY(_start) } 1: - /* Get our processor number and save it away in SAVE_1_0. */ + /* Get our processor number and save it away in SAVE_K_0. */ jal hv_inquire_topology mulll_uu r4, r1, r2 /* r1 == y, r2 == width */ add r4, r4, r0 /* r0 == x, so r4 == cpu == y*width + x */ @@ -124,7 +125,7 @@ ENTRY(_start) lw r0, r0 lw sp, r1 or r4, sp, r4 - mtspr SYSTEM_SAVE_1_0, r4 /* save ksp0 + cpu */ + mtspr SPR_SYSTEM_SAVE_K_0, r4 /* save ksp0 + cpu */ addi sp, sp, -STACK_TOP_DELTA { move lr, zero /* stop backtraces in the called function */ |