[ARM] 3279/1: OMAP: 1/3 Fix low-level io init

[linux-2.6-omap-h63xx.git] / arch / arm / mach-omap1 / io.c

diff --git a/arch/arm/mach-omap1/io.c b/arch/arm/mach-omap1/io.c
index a7a19f75b9e1ad119434cb001c96d5c4a79b28f2..82d556be79c51d24418c7da9198f91ccba5986d6 100644 (file)
--- a/arch/arm/mach-omap1/io.c
+++ b/arch/arm/mach-omap1/io.c
@@ -13,6 +13,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 
+#include <asm/tlb.h>
 #include <asm/mach/map.h>
 #include <asm/io.h>
 #include <asm/arch/mux.h>
@@ -83,15 +84,24 @@ static struct map_desc omap16xx_io_desc[] __initdata = {
 };
 #endif
 
-static int initialized = 0;
-
-static void __init _omap_map_io(void)
+/*
+ * Maps common IO regions for omap1. This should only get called from
+ * board specific init.
+ */
+void __init omap1_map_common_io(void)
 {
-       initialized = 1;
-
-       /* We have to initialize the IO space mapping before we can run
-        * cpu_is_omapxxx() macros. */
        iotable_init(omap_io_desc, ARRAY_SIZE(omap_io_desc));
+
+       /* Normally devicemaps_init() would flush caches and tlb after
+        * mdesc->map_io(), but we must also do it here because of the CPU
+        * revision check below.
+        */
+       local_flush_tlb_all();
+       flush_cache_all();
+
+       /* We want to check CPU revision early for cpu_is_omapxxxx() macros.
+        * IO space mapping must be initialized before we can do that.
+        */
        omap_check_revision();
 
 #ifdef CONFIG_ARCH_OMAP730
@@ -111,7 +121,14 @@ static void __init _omap_map_io(void)
 #endif
 
        omap_sram_init();
+}
 
+/*
+ * Common low-level hardware init for omap1. This should only get called from
+ * board specific init.
+ */
+void __init omap1_init_common_hw()
+{
        /* REVISIT: Refer to OMAP5910 Errata, Advisory SYS_1: "Timeout Abort
         * on a Posted Write in the TIPB Bridge".
         */
@@ -121,16 +138,7 @@ static void __init _omap_map_io(void)
        /* Must init clocks early to assure that timer interrupt works
         */
        omap1_clk_init();
-}
 
-/*
- * This should only get called from board specific init
- */
-void __init omap_map_common_io(void)
-{
-       if (!initialized) {
-               _omap_map_io();
-               omap1_mux_init();
-       }
+       omap1_mux_init();
 }