diff options
| author | Sven Schnelle <svens@stackframe.org> | 2021-10-14 22:49:13 +0300 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2021-11-01 09:35:59 +0300 |
| commit | b5f73da500c61ad226510643222070b0ea4cf9d6 (patch) | |
| tree | a0e2342b259bc74bbce67c94699a64083e84b34b /arch/parisc/include | |
| parent | 8e0ba125c2bf1030af3267058019ba86da96863f (diff) | |
| download | linux-b5f73da500c61ad226510643222070b0ea4cf9d6.tar.xz | |
parisc: move virt_map macro to assembly.h
This macro will also be used by the TOC code, so move it
into asm/assembly.h to avoid duplication.
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc/include')
| -rw-r--r-- | arch/parisc/include/asm/assembly.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/assembly.h b/arch/parisc/include/asm/assembly.h index 365c2853eb7a..7085df079702 100644 --- a/arch/parisc/include/asm/assembly.h +++ b/arch/parisc/include/asm/assembly.h @@ -78,6 +78,7 @@ #include <asm/types.h> #include <asm/asmregs.h> +#include <asm/psw.h> sp = 30 gp = 27 @@ -504,6 +505,30 @@ nop /* 7 */ .endm + /* Switch to virtual mapping, trashing only %r1 */ + .macro virt_map + /* pcxt_ssm_bug */ + rsm PSW_SM_I, %r0 /* barrier for "Relied upon Translation */ + mtsp %r0, %sr4 + mtsp %r0, %sr5 + mtsp %r0, %sr6 + tovirt_r1 %r29 + load32 KERNEL_PSW, %r1 + + rsm PSW_SM_QUIET,%r0 /* second "heavy weight" ctl op */ + mtctl %r0, %cr17 /* Clear IIASQ tail */ + mtctl %r0, %cr17 /* Clear IIASQ head */ + mtctl %r1, %ipsw + load32 4f, %r1 + mtctl %r1, %cr18 /* Set IIAOQ tail */ + ldo 4(%r1), %r1 + mtctl %r1, %cr18 /* Set IIAOQ head */ + rfir + nop +4: + .endm + + /* * ASM_EXCEPTIONTABLE_ENTRY * |