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Diffstat (limited to 'arch/microblaze/kernel/head.S')
-rw-r--r--arch/microblaze/kernel/head.S24
1 files changed, 16 insertions, 8 deletions
diff --git a/arch/microblaze/kernel/head.S b/arch/microblaze/kernel/head.S
index 30916193fcc..1bf73988826 100644
--- a/arch/microblaze/kernel/head.S
+++ b/arch/microblaze/kernel/head.S
@@ -28,6 +28,7 @@
* for more details.
*/
+#include <linux/init.h>
#include <linux/linkage.h>
#include <asm/thread_info.h>
#include <asm/page.h>
@@ -49,8 +50,14 @@ swapper_pg_dir:
#endif /* CONFIG_MMU */
- .text
+ __HEAD
ENTRY(_start)
+#if CONFIG_KERNEL_BASE_ADDR == 0
+ brai TOPHYS(real_start)
+ .org 0x100
+real_start:
+#endif
+
mfs r1, rmsr
andi r1, r1, ~2
mts rmsr, r1
@@ -99,8 +106,8 @@ no_fdt_arg:
tophys(r4,r4) /* convert to phys address */
ori r3, r0, COMMAND_LINE_SIZE - 1 /* number of loops */
_copy_command_line:
- lbu r7, r5, r6 /* r7=r5+r6 - r5 contain pointer to command line */
- sb r7, r4, r6 /* addr[r4+r6]= r7*/
+ lbu r2, r5, r6 /* r2=r5+r6 - r5 contain pointer to command line */
+ sb r2, r4, r6 /* addr[r4+r6]= r2*/
addik r6, r6, 1 /* increment counting */
bgtid r3, _copy_command_line /* loop for all entries */
addik r3, r3, -1 /* descrement loop */
@@ -128,7 +135,7 @@ _copy_bram:
* virtual to physical.
*/
nop
- addik r3, r0, 63 /* Invalidate all TLB entries */
+ addik r3, r0, MICROBLAZE_TLB_SIZE -1 /* Invalidate all TLB entries */
_invalidate:
mts rtlbx, r3
mts rtlbhi, r0 /* flush: ensure V is clear */
@@ -136,6 +143,11 @@ _invalidate:
addik r3, r3, -1
/* sync */
+ /* Setup the kernel PID */
+ mts rpid,r0 /* Load the kernel PID */
+ nop
+ bri 4
+
/*
* We should still be executing code at physical address area
* RAM_BASEADDR at this point. However, kernel code is at
@@ -146,10 +158,6 @@ _invalidate:
addik r3,r0, CONFIG_KERNEL_START /* Load the kernel virtual address */
tophys(r4,r3) /* Load the kernel physical address */
- mts rpid,r0 /* Load the kernel PID */
- nop
- bri 4
-
/*
* Configure and load two entries into TLB slots 0 and 1.
* In case we are pinning TLBs, these are reserved in by the