microblaze: Add checking mechanism for MSR instruction

It was necessary to use fourth parameter(r8) in early_printk
to show messages on console.

Signed-off-by: Michal Simek <monstr@monstr.eu>

1 files changed, 11 insertions, 1 deletions

diff --git a/arch/microblaze/kernel/setup.c b/arch/microblaze/kernel/setup.c
index 2a97bf513b64..8c1e0f4dcf18 100644
--- a/arch/microblaze/kernel/setup.c
+++ b/arch/microblaze/kernel/setup.c
@@ -94,7 +94,7 @@ inline unsigned get_romfs_len(unsigned *addr)
 #endif  /* CONFIG_MTD_UCLINUX_EBSS */
 
 void __init machine_early_init(const char *cmdline, unsigned int ram,
-                unsigned int fdt)
+                unsigned int fdt, unsigned int msr)
 {
         unsigned long *src, *dst = (unsigned long *)0x0;
 
@@ -157,6 +157,16 @@ void __init machine_early_init(const char *cmdline, unsigned int ram,
         early_printk("New klimit: 0x%08x\n", (unsigned)klimit);
 #endif
 
+#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
+        if (msr)
+                early_printk("!!!Your kernel has setup MSR instruction but "
+                                "CPU don't have it %d\n", msr);
+#else
+        if (!msr)
+                early_printk("!!!Your kernel not setup MSR instruction but "
+                                "CPU have it %d\n", msr);
+#endif
+
         for (src = __ivt_start; src < __ivt_end; src++, dst++)
                 *dst = *src;