omap: Remap L3, L4 to get more kernel io address space

This patch remap L3 and L4 io space to get more kernel address space.
With this patch, 512 MB of IO space is reclaimed.
Some more combinations are possible but to make it uniform across
OMAP24XX, OMAP34XX and OMAP4430, these io combinations are chosen

Once this is reviewed and tested sufficiently, a documentation entry can
be created to ease up reading and debugging.
Like "Documentation/arm/omap/io_map.txt"

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 59 insertions, 38 deletions

diff --git a/arch/arm/plat-omap/include/mach/io.h b/arch/arm/plat-omap/include/mach/io.h
index c475be75267e..a8f931a58f80 100644
--- a/arch/arm/plat-omap/include/mach/io.h
+++ b/arch/arm/plat-omap/include/mach/io.h
@@ -66,8 +66,18 @@
 #define OMAP2_L3_IO_OFFSET      0x90000000
 #define OMAP2_L3_IO_ADDRESS(pa) IOMEM((pa) + OMAP2_L3_IO_OFFSET) /* L3 */
 
-#define OMAP2_L4_IO_OFFSET      0x90000000
+#define OMAP4_L3_IO_OFFSET      0xb4000000
+#define OMAP4_L3_IO_ADDRESS(pa) IOMEM((pa) + OMAP4_L3_IO_OFFSET) /* L3 */
+
+#define OMAP4_GPMC_IO_OFFSET            0xa9000000
+#define OMAP4_GPMC_IO_ADDRESS(pa)       IOMEM((pa) + OMAP4_GPMC_IO_OFFSET)
+
+#define OMAP2_L4_IO_OFFSET      0xb2000000
 #define OMAP2_L4_IO_ADDRESS(pa) IOMEM((pa) + OMAP2_L4_IO_OFFSET) /* L4 */
+
+#define OMAP2_EMU_IO_OFFSET             0xaa800000      /* Emulation */
+#define OMAP2_EMU_IO_ADDRESS(pa)        IOMEM((pa) + OMAP2_EMU_IO_OFFSET)
+
 /*
  * ----------------------------------------------------------------------------
  * Omap1 specific IO mapping
@@ -85,24 +95,27 @@
  */
 
 /* We map both L3 and L4 on OMAP2 */
-#define L3_24XX_PHYS    L3_24XX_BASE    /* 0x68000000 */
-#define L3_24XX_VIRT    0xf8000000
+#define L3_24XX_PHYS    L3_24XX_BASE    /* 0x68000000 --> 0xf8000000*/
+#define L3_24XX_VIRT    (L3_24XX_PHYS + OMAP2_L3_IO_OFFSET)
 #define L3_24XX_SIZE    SZ_1M           /* 44kB of 128MB used, want 1MB sect */
-#define L4_24XX_PHYS    L4_24XX_BASE    /* 0x48000000 */
-#define L4_24XX_VIRT    0xd8000000
+#define L4_24XX_PHYS    L4_24XX_BASE    /* 0x48000000 --> 0xfa000000 */
+#define L4_24XX_VIRT    (L4_24XX_PHYS + OMAP2_L4_IO_OFFSET)
 #define L4_24XX_SIZE    SZ_1M           /* 1MB of 128MB used, want 1MB sect */
 
-#define L4_WK_243X_PHYS         L4_WK_243X_BASE         /* 0x49000000 */
-#define L4_WK_243X_VIRT         0xd9000000
+#define L4_WK_243X_PHYS         L4_WK_243X_BASE /* 0x49000000 --> 0xfb000000 */
+#define L4_WK_243X_VIRT         (L4_WK_243X_PHYS + OMAP2_L4_IO_OFFSET)
 #define L4_WK_243X_SIZE         SZ_1M
-#define OMAP243X_GPMC_PHYS      OMAP243X_GPMC_BASE      /* 0x49000000 */
-#define OMAP243X_GPMC_VIRT      0xFE000000
+#define OMAP243X_GPMC_PHYS      OMAP243X_GPMC_BASE
+#define OMAP243X_GPMC_VIRT      (OMAP243X_GPMC_PHYS + OMAP2_L3_IO_OFFSET)
+                                                /* 0x6e000000 --> 0xfe000000 */
 #define OMAP243X_GPMC_SIZE      SZ_1M
 #define OMAP243X_SDRC_PHYS      OMAP243X_SDRC_BASE
-#define OMAP243X_SDRC_VIRT      0xFD000000
+                                                /* 0x6D000000 --> 0xfd000000 */
+#define OMAP243X_SDRC_VIRT      (OMAP243X_SDRC_PHYS + OMAP2_L3_IO_OFFSET)
 #define OMAP243X_SDRC_SIZE      SZ_1M
 #define OMAP243X_SMS_PHYS       OMAP243X_SMS_BASE
-#define OMAP243X_SMS_VIRT       0xFC000000
+                                                /* 0x6c000000 --> 0xfc000000 */
+#define OMAP243X_SMS_VIRT       (OMAP243X_SMS_PHYS + OMAP2_L3_IO_OFFSET)
 #define OMAP243X_SMS_SIZE       SZ_1M
 
 /* DSP */
@@ -123,12 +136,12 @@
  */
 
 /* We map both L3 and L4 on OMAP3 */
-#define L3_34XX_PHYS            L3_34XX_BASE    /* 0x68000000 */
-#define L3_34XX_VIRT            0xf8000000
+#define L3_34XX_PHYS            L3_34XX_BASE    /* 0x68000000 --> 0xf8000000 */
+#define L3_34XX_VIRT            (L3_34XX_PHYS + OMAP2_L3_IO_OFFSET)
 #define L3_34XX_SIZE            SZ_1M   /* 44kB of 128MB used, want 1MB sect */
 
-#define L4_34XX_PHYS            L4_34XX_BASE    /* 0x48000000 */
-#define L4_34XX_VIRT            0xd8000000
+#define L4_34XX_PHYS            L4_34XX_BASE    /* 0x48000000 --> 0xfa000000 */
+#define L4_34XX_VIRT            (L4_34XX_PHYS + OMAP2_L4_IO_OFFSET)
 #define L4_34XX_SIZE            SZ_4M   /* 1MB of 128MB used, want 1MB sect */
 
 /*
@@ -136,28 +149,33 @@
  * VPOM3430 was not working for Int controller
  */
 
-#define L4_WK_34XX_PHYS         L4_WK_34XX_BASE /* 0x48300000 */
-#define L4_WK_34XX_VIRT         0xd8300000
+#define L4_WK_34XX_PHYS         L4_WK_34XX_BASE /* 0x48300000 --> 0xfa300000 */
+#define L4_WK_34XX_VIRT         (L4_WK_34XX_PHYS + OMAP2_L4_IO_OFFSET)
 #define L4_WK_34XX_SIZE         SZ_1M
 
-#define L4_PER_34XX_PHYS        L4_PER_34XX_BASE /* 0x49000000 */
-#define L4_PER_34XX_VIRT        0xd9000000
+#define L4_PER_34XX_PHYS        L4_PER_34XX_BASE
+                                                /* 0x49000000 --> 0xfb000000 */
+#define L4_PER_34XX_VIRT        (L4_PER_34XX_PHYS + OMAP2_L4_IO_OFFSET)
 #define L4_PER_34XX_SIZE        SZ_1M
 
-#define L4_EMU_34XX_PHYS        L4_EMU_34XX_BASE /* 0x54000000 */
-#define L4_EMU_34XX_VIRT        0xe4000000
-#define L4_EMU_34XX_SIZE        SZ_64M
+#define L4_EMU_34XX_PHYS        L4_EMU_34XX_BASE
+                                                /* 0x54000000 --> 0xfe800000 */
+#define L4_EMU_34XX_VIRT        (L4_EMU_34XX_PHYS + OMAP2_EMU_IO_OFFSET)
+#define L4_EMU_34XX_SIZE        SZ_8M
 
-#define OMAP34XX_GPMC_PHYS      OMAP34XX_GPMC_BASE /* 0x6E000000 */
-#define OMAP34XX_GPMC_VIRT      0xFE000000
+#define OMAP34XX_GPMC_PHYS      OMAP34XX_GPMC_BASE
+                                                /* 0x6e000000 --> 0xfe000000 */
+#define OMAP34XX_GPMC_VIRT      (OMAP34XX_GPMC_PHYS + OMAP2_L3_IO_OFFSET)
 #define OMAP34XX_GPMC_SIZE      SZ_1M
 
-#define OMAP343X_SMS_PHYS       OMAP343X_SMS_BASE /* 0x6C000000 */
-#define OMAP343X_SMS_VIRT       0xFC000000
+#define OMAP343X_SMS_PHYS       OMAP343X_SMS_BASE
+                                                /* 0x6c000000 --> 0xfc000000 */
+#define OMAP343X_SMS_VIRT       (OMAP343X_SMS_PHYS + OMAP2_L3_IO_OFFSET)
 #define OMAP343X_SMS_SIZE       SZ_1M
 
-#define OMAP343X_SDRC_PHYS      OMAP343X_SDRC_BASE /* 0x6D000000 */
-#define OMAP343X_SDRC_VIRT      0xFD000000
+#define OMAP343X_SDRC_PHYS      OMAP343X_SDRC_BASE
+                                                /* 0x6D000000 --> 0xfd000000 */
+#define OMAP343X_SDRC_VIRT      (OMAP343X_SDRC_PHYS + OMAP2_L3_IO_OFFSET)
 #define OMAP343X_SDRC_SIZE      SZ_1M
 
 /* DSP */
@@ -178,29 +196,32 @@
  */
 
 /* We map both L3 and L4 on OMAP4 */
-#define L3_44XX_PHYS            L3_44XX_BASE
-#define L3_44XX_VIRT            0xd4000000
+#define L3_44XX_PHYS            L3_44XX_BASE    /* 0x44000000 --> 0xf8000000 */
+#define L3_44XX_VIRT            (L3_44XX_PHYS + OMAP4_L3_IO_OFFSET)
 #define L3_44XX_SIZE            SZ_1M
 
-#define L4_44XX_PHYS            L4_44XX_BASE
-#define L4_44XX_VIRT            0xda000000
+#define L4_44XX_PHYS            L4_44XX_BASE    /* 0x4a000000 --> 0xfc000000 */
+#define L4_44XX_VIRT            (L4_44XX_PHYS + OMAP2_L4_IO_OFFSET)
 #define L4_44XX_SIZE            SZ_4M
 
 
-#define L4_WK_44XX_PHYS         L4_WK_44XX_BASE
-#define L4_WK_44XX_VIRT         0xda300000
+#define L4_WK_44XX_PHYS         L4_WK_44XX_BASE /* 0x4a300000 --> 0xfc300000 */
+#define L4_WK_44XX_VIRT         (L4_WK_44XX_PHYS + OMAP2_L4_IO_OFFSET)
 #define L4_WK_44XX_SIZE         SZ_1M
 
 #define L4_PER_44XX_PHYS        L4_PER_44XX_BASE
-#define L4_PER_44XX_VIRT        0xd8000000
+                                                /* 0x48000000 --> 0xfa000000 */
+#define L4_PER_44XX_VIRT        (L4_PER_44XX_PHYS + OMAP2_L4_IO_OFFSET)
 #define L4_PER_44XX_SIZE        SZ_4M
 
 #define L4_EMU_44XX_PHYS        L4_EMU_44XX_BASE
-#define L4_EMU_44XX_VIRT        0xe4000000
-#define L4_EMU_44XX_SIZE        SZ_64M
+                                                /* 0x54000000 --> 0xfe800000 */
+#define L4_EMU_44XX_VIRT        (L4_EMU_44XX_PHYS + OMAP2_EMU_IO_OFFSET)
+#define L4_EMU_44XX_SIZE        SZ_8M
 
 #define OMAP44XX_GPMC_PHYS      OMAP44XX_GPMC_BASE
-#define OMAP44XX_GPMC_VIRT      0xe0000000
+                                                /* 0x50000000 --> 0xf9000000 */
+#define OMAP44XX_GPMC_VIRT      (OMAP44XX_GPMC_PHYS + OMAP4_GPMC_IO_OFFSET)
 #define OMAP44XX_GPMC_SIZE      SZ_1M