sh: Use correct mask when comparing PMB DATA array values
Previously we were masking the PMB DATA array values with the value of
__MEMORY_START | PMB_V, which misses some PFN bits off the mask.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
diff --git a/arch/sh/kernel/head_32.S b/arch/sh/kernel/head_32.S
index 8c1fc9a..6e35f01 100644
--- a/arch/sh/kernel/head_32.S
+++ b/arch/sh/kernel/head_32.S
@@ -131,6 +131,7 @@
* r8 = scratch register
* r9 = scratch register
* r10 = number of PMB entries we've setup
+ * r11 = scratch register
*/
mov.l .LMMUCR, r1 /* Flush the TLB */
@@ -167,8 +168,9 @@
.Lvalidate_existing_mappings:
+ mov.l .LPMB_DATA_MASK, r11
mov.l @r7, r8
- and r0, r8
+ and r11, r8
cmp/eq r0, r8 /* Check for valid __MEMORY_START mappings */
bt .Lpmb_done
@@ -341,6 +343,7 @@
#ifdef CONFIG_PMB
.LPMB_ADDR: .long PMB_ADDR
.LPMB_DATA: .long PMB_DATA
+.LPMB_DATA_MASK: .long PMB_PFN_MASK | PMB_V
.LFIRST_ADDR_ENTRY: .long PAGE_OFFSET | PMB_V
.LFIRST_DATA_ENTRY: .long __MEMORY_START | PMB_V
.LMMUCR: .long MMUCR