Fix PCI I/O space mapping on Freescale MPC85x0ADS

The PCI I/O space mapping for Freescale MPC8540ADS board was broken by commit
52c7a68b8d587ebcf5a6b051b58b3d3ffa377ddc which failed to update the #define's
describing the local address window used for the PCI I/O space accesses -- fix
this and carry over the necessary changes into the MPC8560ADS code since the
PCI I/O space mapping was also broken for this board (by the earlier commit
087454609e47295443af793a282cddcd91a5f49c).  Add the comments clarifying how
the PCI I/O space must be mapped to all the MPC85xx board config. headers.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>

 board/mpc8540ads/init.S      |    4 ++--
 board/mpc8560ads/init.S      |    4 ++--
 include/configs/MPC8540ADS.h |    5 ++---
 include/configs/MPC8541CDS.h |    2 +-
 include/configs/MPC8548CDS.h |    2 +-
 include/configs/MPC8560ADS.h |    8 ++++----
 6 files changed, 12 insertions(+), 13 deletions(-)

board/mpc8540ads/init.S

@@ -260,8 +260,8 @@ tlb1_entry:
 #define LAWBAR2 ((CFG_LBC_SDRAM_BASE>>12) & 0xfffff)
 #define LAWAR2	(LAWAR_EN | LAWAR_TRGT_IF_LBC | (LAWAR_SIZE & LAWAR_SIZE_256M))
 
-#define LAWBAR3 ((CFG_PCI1_IO_BASE>>12) & 0xfffff)
-#define LAWAR3	(LAWAR_EN | LAWAR_TRGT_IF_PCIX | (LAWAR_SIZE & LAWAR_SIZE_16M))
+#define LAWBAR3 ((CFG_PCI1_IO_PHYS>>12) & 0xfffff)
+#define LAWAR3	(LAWAR_EN | LAWAR_TRGT_IF_PCIX | (LAWAR_SIZE & LAWAR_SIZE_1M))
 
 /*
  * Rapid IO at 0xc000_0000 for 512 M

board/mpc8560ads/init.S

@@ -260,8 +260,8 @@ tlb1_entry:
 #define LAWBAR2 ((CFG_LBC_SDRAM_BASE>>12) & 0xfffff)
 #define LAWAR2	(LAWAR_EN | LAWAR_TRGT_IF_LBC | (LAWAR_SIZE & LAWAR_SIZE_256M))
 
-#define LAWBAR3 ((CFG_PCI1_IO_BASE>>12) & 0xfffff)
-#define LAWAR3	(LAWAR_EN | LAWAR_TRGT_IF_PCIX | (LAWAR_SIZE & LAWAR_SIZE_16M))
+#define LAWBAR3 ((CFG_PCI1_IO_PHYS>>12) & 0xfffff)
+#define LAWAR3	(LAWAR_EN | LAWAR_TRGT_IF_PCIX | (LAWAR_SIZE & LAWAR_SIZE_1M))
 
 /*
  * Rapid IO at 0xc000_0000 for 512 M

include/configs/MPC8540ADS.h

@@ -330,13 +330,12 @@
 
 /*
  * General PCI
- * Addresses are mapped 1-1.
+ * Memory space is mapped 1-1, but I/O space must start from 0.
  */
 #define CFG_PCI1_MEM_BASE	0x80000000
 #define CFG_PCI1_MEM_PHYS	CFG_PCI1_MEM_BASE
 #define CFG_PCI1_MEM_SIZE	0x20000000	/* 512M */
-
-#define CFG_PCI1_IO_BASE	0x0
+#define CFG_PCI1_IO_BASE	0x00000000
 #define CFG_PCI1_IO_PHYS	0xe2000000
 #define CFG_PCI1_IO_SIZE	0x100000	/* 1M */
 

include/configs/MPC8541CDS.h

@@ -334,7 +334,7 @@ extern unsigned long get_clock_freq(void);
 
 /*
  * General PCI
- * Addresses are mapped 1-1.
+ * Memory space is mapped 1-1, but I/O space must start from 0.
  */
 #define CFG_PCI1_MEM_BASE	0x80000000
 #define CFG_PCI1_MEM_PHYS	CFG_PCI1_MEM_BASE

include/configs/MPC8548CDS.h

@@ -340,7 +340,7 @@ extern unsigned long get_clock_freq(void);
 
 /*
  * General PCI
- * Addresses are mapped 1-1.
+ * Memory space is mapped 1-1, but I/O space must start from 0.
  */
 #define CFG_PCI1_MEM_BASE	0x80000000
 #define CFG_PCI1_MEM_PHYS	CFG_PCI1_MEM_BASE

include/configs/MPC8560ADS.h

@@ -320,14 +320,14 @@
 
 /*
  * General PCI
- * Addresses are mapped 1-1.
+ * Memory space is mapped 1-1, but I/O space must start from 0.
  */
 #define CFG_PCI1_MEM_BASE	0x80000000
 #define CFG_PCI1_MEM_PHYS	CFG_PCI1_MEM_BASE
 #define CFG_PCI1_MEM_SIZE	0x20000000	/* 512M */
-#define CFG_PCI1_IO_BASE	0xe2000000
-#define CFG_PCI1_IO_PHYS	CFG_PCI1_IO_BASE
-#define CFG_PCI1_IO_SIZE	0x1000000	/* 16M */
+#define CFG_PCI1_IO_BASE	0x00000000
+#define CFG_PCI1_IO_PHYS	0xe2000000
+#define CFG_PCI1_IO_SIZE	0x100000	/* 1M */
 
 #if defined(CONFIG_PCI)