microblaze_mmu_v2: Alocate TLB for early console

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

arch/microblaze/include/asm/setup.h

 /*
- * Copyright (C) 2007-2008 Michal Simek <monstr@monstr.eu>
+ * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
+ * Copyright (C) 2007-2009 PetaLogix
  * Copyright (C) 2006 Atmark Techno, Inc.
  *
  * This file is subject to the terms and conditions of the GNU General Public
@@ -18,7 +19,6 @@
 extern unsigned int boot_cpuid; /* move to smp.h */
 
 extern char cmd_line[COMMAND_LINE_SIZE];
-#  endif/* __KERNEL__ */
 
 void early_printk(const char *fmt, ...);
 
@@ -30,6 +30,11 @@ void setup_heartbeat(void);
 
 unsigned long long sched_clock(void);
 
+#   ifdef CONFIG_MMU
+extern void mmu_reset(void);
+extern void early_console_reg_tlb_alloc(unsigned int addr);
+#   endif /* CONFIG_MMU */
+
 void time_init(void);
 void init_IRQ(void);
 void machine_early_init(const char *cmdline, unsigned int ram,
@@ -40,5 +45,6 @@ void machine_shutdown(void);
 void machine_halt(void);
 void machine_power_off(void);
 
+#  endif/* __KERNEL__ */
 # endif /* __ASSEMBLY__ */
 #endif /* _ASM_MICROBLAZE_SETUP_H */

arch/microblaze/kernel/early_printk.c

@@ -87,6 +87,9 @@ int __init setup_early_printk(char *opt)
 	base_addr = early_uartlite_console();
 	if (base_addr) {
 		early_console_initialized = 1;
+#ifdef CONFIG_MMU
+		early_console_reg_tlb_alloc(base_addr);
+#endif
 		early_printk("early_printk_console is enabled at 0x%08x\n",
 							base_addr);