TQM85xx: Change memory map to support Flash memory > 128 MiB

Some TQM85xx boards could be equipped with up to 1 GiB (NOR) Flash
memory. The current memory map only supports up to 128 MiB Flash.
This patch adds the configuration option CONFIG_TQM_BIGFLASH. If
set, up to 1 GiB flash is supported. To achieve this, the memory
map has to be adjusted in great parts (for example the CCSRBAR is
moved from 0xE0000000 to 0xA0000000).

If you want to boot Linux with CONFIG_TQM_BIGFLASH set, the new
memory map also has to be considered in the kernel (changed
CCSRBAR address, changed PCI IO base address, ...). Please use
an appropriate Flat Device Tree blob (tqm8548.dtb).

Signed-off-by: Martin Krause <martin.krause@tqs.de>
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>

1 files changed, 45 insertions, 7 deletions

diff --git a/include/configs/TQM85xx.h b/include/configs/TQM85xx.h
index b188adf232..d18f2346c6 100644
--- a/include/configs/TQM85xx.h
+++ b/include/configs/TQM85xx.h
@@ -54,6 +54,16 @@
 
 #define CONFIG_MISC_INIT_R	1	/* Call misc_init_r		*/
 
+ /*
+ * Configuration for big NOR Flashes
+ *
+ * Define CONFIG_TQM_BIGFLASH for boards with more than 128 MiB NOR Flash.
+ * Please be aware, that this changes the whole memory map (new CCSRBAR
+ * address, etc). You have to use an adapted Linux kernel or FDT blob
+ * if this option is set.
+ */
+#undef CONFIG_TQM_BIGFLASH
+
 /*
  * NAND flash support (disabled by default)
  *
@@ -109,7 +119,11 @@
  * actual resources get mapped (not physical addresses)
  */
 #define CFG_CCSRBAR_DEFAULT	0xFF700000	/* CCSRBAR Default	*/
+#ifdef CONFIG_TQM_BIGFLASH
+#define CFG_CCSRBAR	 	0xA0000000	/* relocated CCSRBAR	*/
+#else /* !CONFIG_TQM_BIGFLASH */
 #define CFG_CCSRBAR		0xE0000000	/* relocated CCSRBAR	*/
+#endif /* CONFIG_TQM_BIGFLASH */
 #define CFG_CCSRBAR_PHYS	CFG_CCSRBAR	/* physical addr of CCSRBAR */
 #define CFG_IMMR		CFG_CCSRBAR	/* PQII uses CFG_IMMR	*/
 
@@ -146,8 +160,13 @@
 /*
  * Flash on the Local Bus
  */
+#ifdef CONFIG_TQM_BIGFLASH
+#define CFG_FLASH0		0xE0000000
+#define CFG_FLASH1		0xC0000000
+#else /* !CONFIG_TQM_BIGFLASH */
 #define CFG_FLASH0		0xFC000000
 #define CFG_FLASH1		0xF8000000
+#endif /* CONFIG_TQM_BIGFLASH */
 #define CFG_FLASH_BANKS_LIST	{ CFG_FLASH1, CFG_FLASH0 }
 
 #define CFG_LBC_FLASH_BASE	CFG_FLASH1	/* Localbus flash start	*/
@@ -172,10 +191,17 @@
  *  25         0x.....020
  *
  */
+#ifdef CONFIG_TQM_BIGFLASH
+#define CFG_BR0_PRELIM		0xE0001801	/* port size 32bit	*/
+#define CFG_OR0_PRELIM		0xE0000040	/* 512MB Flash		*/
+#define CFG_BR1_PRELIM		0xC0001801	/* port size 32bit	*/
+#define CFG_OR1_PRELIM		0xE0000040	/* 512MB Flash		*/
+#else /* !CONFIG_TQM_BIGFLASH */
 #define CFG_BR0_PRELIM		0xfc001801	/* port size 32bit	*/
 #define CFG_OR0_PRELIM		0xfc000040	/* 64MB Flash		*/
 #define CFG_BR1_PRELIM		0xf8001801	/* port size 32bit	*/
 #define CFG_OR1_PRELIM		0xfc000040	/* 64MB Flash		*/
+#endif /* CONFIG_TQM_BIGFLASH */
 
 #define CFG_FLASH_CFI			/* flash is CFI compat.		*/
 #define CFG_FLASH_CFI_DRIVER		/* Use common CFI driver	*/
@@ -206,7 +232,8 @@
 
 #define CONFIG_L1_INIT_RAM
 #define CFG_INIT_RAM_LOCK	1
-#define CFG_INIT_RAM_ADDR	0xe4010000	/* Initial RAM address	*/
+#define CFG_INIT_RAM_ADDR	(CFG_CCSRBAR \
+				 + 0x04010000)	/* Initial RAM address	*/
 #define CFG_INIT_RAM_END	0x4000		/* End used area in RAM	*/
 
 #define CFG_GBL_DATA_SIZE	128	/* num bytes initial data	*/
@@ -261,7 +288,8 @@
 #define CONFIG_OF_STDOUT_VIA_ALIAS	1
 
 /* CAN */
-#define CFG_CAN_BASE		0xE3000000	/* CAN base address     */
+#define CFG_CAN_BASE		(CFG_CCSRBAR \
+				 + 0x03000000)	/* CAN base address     */
 #ifdef CONFIG_CAN_DRIVER
 #define CFG_CAN_OR_AM		0xFFFF8000	/* 32 KiB address mask  */
 #define CFG_OR2_CAN		(CFG_CAN_OR_AM | OR_UPM_BI)
@@ -304,9 +332,14 @@
 
 #ifndef CONFIG_PCIE1
 /* RapidIO MMU */
+#ifdef CONFIG_TQM_BIGFLASH
+#define CFG_RIO_MEM_BASE	0xb0000000	/* base address		*/
+#define CFG_RIO_MEM_SIZE	0x10000000	/* 256M			*/
+#else /* !CONFIG_TQM_BIGFLASH */
 #define CFG_RIO_MEM_BASE	0xc0000000	/* base address		*/
-#define CFG_RIO_MEM_PHYS	CFG_RIO_MEM_BASE
 #define CFG_RIO_MEM_SIZE	0x20000000	/* 512M			*/
+#endif /* CONFIG_TQM_BIGFLASH */
+#define CFG_RIO_MEM_PHYS	CFG_RIO_MEM_BASE
 #endif /* CONFIG_PCIE1 */
 
 /* NAND FLASH */
@@ -323,7 +356,7 @@
 #define	CFG_NAND_CS_DIST	0x200
 
 #define CFG_NAND_SIZE		0x8000
-#define CFG_NAND0_BASE		0xE3010000
+#define CFG_NAND0_BASE		(CFG_CCSRBAR + 0x03010000)
 #define CFG_NAND1_BASE		(CFG_NAND0_BASE + CFG_NAND_CS_DIST)
 #define CFG_NAND2_BASE		(CFG_NAND1_BASE + CFG_NAND_CS_DIST)
 #define CFG_NAND3_BASE		(CFG_NAND2_BASE + CFG_NAND_CS_DIST)
@@ -363,7 +396,7 @@
 #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_BASE	(CFG_CCSRBAR + 0x02000000)
 #define CFG_PCI1_IO_PHYS	CFG_PCI1_IO_BASE
 #define CFG_PCI1_IO_SIZE	0x1000000	/*  16M			*/
 
@@ -377,13 +410,18 @@
  * General PCI express
  * Addresses are mapped 1-1.
  */
+#ifdef CONFIG_TQM_BIGFLASH
+#define CFG_PCIE1_MEM_BASE	0xb0000000
+#define CFG_PCIE1_MEM_SIZE	0x10000000      /* 512M                 */
+#define CFG_PCIE1_IO_BASE	0xaf000000
+#else /* !CONFIG_TQM_BIGFLASH */
 #define CFG_PCIE1_MEM_BASE	0xc0000000
-#define CFG_PCIE1_MEM_PHYS	CFG_PCIE1_MEM_BASE
 #define CFG_PCIE1_MEM_SIZE	0x20000000      /* 512M                 */
 #define CFG_PCIE1_IO_BASE	0xef000000
+#endif /* CONFIG_TQM_BIGFLASH */
+#define CFG_PCIE1_MEM_PHYS	CFG_PCIE1_MEM_BASE
 #define CFG_PCIE1_IO_PHYS	CFG_PCIE1_IO_BASE
 #define CFG_PCIE1_IO_SIZE	0x1000000       /* 16M                  */
-
 #endif /* CONFIG_PCIE1 */
 
 #if defined(CONFIG_PCI)