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| author | Max Filippov <jcmvbkbc@gmail.com> | 2013-06-09 04:52:11 +0400 |
|---|---|---|
| committer | Chris Zankel <chris@zankel.net> | 2013-07-08 01:18:56 -0700 |
| commit | c5a771d0678f9613e9f89cf1a5bdcfa5b08b225b (patch) | |
| tree | c0d5ae3d94a0edb6edf9f1896ecb31666035d280 /arch/xtensa/kernel/head.S | |
| parent | 661b40b0362c16b9969bf018636fb60454f62ee5 (diff) | |
| download | linux-c5a771d0678f9613e9f89cf1a5bdcfa5b08b225b.tar.bz2 | |
xtensa: adjust boot parameters address when INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX is selected
The virtual address of boot parameters chain is passed to the kernel via
a2 register. Adjust it in case it is remapped during MMUv3 -> MMUv2
mapping change, i.e. when it is in the first 128M.
Also fix interpretation of initrd and FDT addresses passed in the boot
parameters: these are physical addresses.
Cc: stable@vger.kernel.org
Reported-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa/kernel/head.S')
| -rw-r--r-- | arch/xtensa/kernel/head.S | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/xtensa/kernel/head.S b/arch/xtensa/kernel/head.S index ef12c0e6fa25..7d740ebbe198 100644 --- a/arch/xtensa/kernel/head.S +++ b/arch/xtensa/kernel/head.S @@ -68,6 +68,15 @@ _SetupMMU: #ifdef CONFIG_INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX initialize_mmu +#if defined(CONFIG_MMU) && XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY + rsr a2, excsave1 + movi a3, 0x08000000 + bgeu a2, a3, 1f + movi a3, 0xd0000000 + add a2, a2, a3 + wsr a2, excsave1 +1: +#endif #endif .end no-absolute-literals |