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authorDave Airlie <airlied@redhat.com>2011-03-14 14:15:13 +1000
committerDave Airlie <airlied@redhat.com>2011-03-14 14:15:13 +1000
commit34db18abd376b2075c760c38f0b861aed379415d (patch)
treec4174e39a2f445f17c25ab206d45c66217bbbf85 /arch/microblaze/kernel
parente73f88af66fcc50083fae4b7e1c39b469179a97a (diff)
parent47ae63e0c2e5fdb582d471dc906eb29be94c732f (diff)
downloadtalos-obmc-linux-34db18abd376b2075c760c38f0b861aed379415d.tar.gz
talos-obmc-linux-34db18abd376b2075c760c38f0b861aed379415d.zip
Merge remote branch 'intel/drm-intel-next' of ../drm-next into drm-core-next
* 'intel/drm-intel-next' of ../drm-next: (755 commits) drm/i915: Only wait on a pending flip if we intend to write to the buffer drm/i915/dp: Sanity check eDP existence drm/i915: Rebind the buffer if its alignment constraints changes with tiling drm/i915: Disable GPU semaphores by default drm/i915: Do not overflow the MMADDR write FIFO Revert "drm/i915: fix corruptions on i8xx due to relaxed fencing" drm/i915: Don't save/restore hardware status page address register drm/i915: don't store the reg value for HWS_PGA drm/i915: fix memory corruption with GM965 and >4GB RAM Linux 2.6.38-rc7 Revert "TPM: Long default timeout fix" drm/i915: Re-enable GPU semaphores for SandyBridge mobile drm/i915: Replace vblank PM QoS with "Interrupt-Based AGPBUSY#" Revert "drm/i915: Use PM QoS to prevent C-State starvation of gen3 GPU" drm/i915: Allow relocation deltas outside of target bo drm/i915: Silence an innocuous compiler warning for an unused variable fs/block_dev.c: fix new kernel-doc warning ACPI: Fix build for CONFIG_NET unset mm: <asm-generic/pgtable.h> must include <linux/mm_types.h> x86: Use u32 instead of long to set reset vector back to 0 ... Conflicts: drivers/gpu/drm/i915/i915_gem.c
Diffstat (limited to 'arch/microblaze/kernel')
-rw-r--r--arch/microblaze/kernel/cpu/pvr.c4
-rw-r--r--arch/microblaze/kernel/head.S15
-rw-r--r--arch/microblaze/kernel/setup.c4
3 files changed, 11 insertions, 12 deletions
diff --git a/arch/microblaze/kernel/cpu/pvr.c b/arch/microblaze/kernel/cpu/pvr.c
index e01afa68273e..488c1ed24e38 100644
--- a/arch/microblaze/kernel/cpu/pvr.c
+++ b/arch/microblaze/kernel/cpu/pvr.c
@@ -27,7 +27,7 @@
register unsigned tmp __asm__("r3"); \
tmp = 0x0; /* Prevent warning about unused */ \
__asm__ __volatile__ ( \
- "mfs %0, rpvr" #pvrid ";" \
+ "mfs %0, rpvr" #pvrid ";" \
: "=r" (tmp) : : "memory"); \
val = tmp; \
}
@@ -54,7 +54,7 @@ int cpu_has_pvr(void)
if (!(flags & PVR_MSR_BIT))
return 0;
- get_single_pvr(0x00, pvr0);
+ get_single_pvr(0, pvr0);
pr_debug("%s: pvr0 is 0x%08x\n", __func__, pvr0);
if (pvr0 & PVR0_PVR_FULL_MASK)
diff --git a/arch/microblaze/kernel/head.S b/arch/microblaze/kernel/head.S
index 0db20b5abb54..778a5ce2e4fc 100644
--- a/arch/microblaze/kernel/head.S
+++ b/arch/microblaze/kernel/head.S
@@ -62,15 +62,14 @@ real_start:
andi r1, r1, ~2
mts rmsr, r1
/*
- * Here is checking mechanism which check if Microblaze has msr instructions
- * We load msr and compare it with previous r1 value - if is the same,
- * msr instructions works if not - cpu don't have them.
+ * According to Xilinx, msrclr instruction behaves like 'mfs rX,rpc'
+ * if the msrclr instruction is not enabled. We use this to detect
+ * if the opcode is available, by issuing msrclr and then testing the result.
+ * r8 == 0 - msr instructions are implemented
+ * r8 != 0 - msr instructions are not implemented
*/
- /* r8=0 - I have msr instr, 1 - I don't have them */
- rsubi r0, r0, 1 /* set the carry bit */
- msrclr r0, 0x4 /* try to clear it */
- /* read the carry bit, r8 will be '0' if msrclr exists */
- addik r8, r0, 0
+ msrclr r8, 0 /* clear nothing - just read msr for test */
+ cmpu r8, r8, r1 /* r1 must contain msr reg content */
/* r7 may point to an FDT, or there may be one linked in.
if it's in r7, we've got to save it away ASAP.
diff --git a/arch/microblaze/kernel/setup.c b/arch/microblaze/kernel/setup.c
index bb1558e4b283..9312fbb37efd 100644
--- a/arch/microblaze/kernel/setup.c
+++ b/arch/microblaze/kernel/setup.c
@@ -161,11 +161,11 @@ void __init machine_early_init(const char *cmdline, unsigned int ram,
#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
if (msr)
eprintk("!!!Your kernel has setup MSR instruction but "
- "CPU don't have it %d\n", msr);
+ "CPU don't have it %x\n", msr);
#else
if (!msr)
eprintk("!!!Your kernel not setup MSR instruction but "
- "CPU have it %d\n", msr);
+ "CPU have it %x\n", msr);
#endif
for (src = __ivt_start; src < __ivt_end; src++, dst++)
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