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>
diff --git a/board/tqc/tqm85xx/tlb.c b/board/tqc/tqm85xx/tlb.c
index 7f4efc1..380448a 100644
--- a/board/tqc/tqm85xx/tlb.c
+++ b/board/tqc/tqm85xx/tlb.c
@@ -44,6 +44,7 @@
MAS3_SX | MAS3_SW | MAS3_SR, 0,
0, 0, BOOKE_PAGESZ_4K, 0),
+#ifndef CONFIG_TQM_BIGFLASH
/*
* TLB 0, 1: 128M Non-cacheable, guarded
* 0xf8000000 128M FLASH
@@ -146,6 +147,102 @@
0, 9, BOOKE_PAGESZ_16M, 1),
#endif /* CONFIG_PCIE */
+#else /* CONFIG_TQM_BIGFLASH */
+
+ /*
+ * TLB 0,1,2,3: 1G Non-cacheable, guarded
+ * 0xc0000000 1G FLASH
+ * Out of reset this entry is only 4K.
+ */
+ SET_TLB_ENTRY (1, CFG_FLASH_BASE, CFG_FLASH_BASE,
+ MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
+ 0, 3, BOOKE_PAGESZ_256M, 1),
+ SET_TLB_ENTRY (1, CFG_FLASH_BASE + 0x10000000,
+ CFG_FLASH_BASE + 0x10000000,
+ MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
+ 0, 2, BOOKE_PAGESZ_256M, 1),
+ SET_TLB_ENTRY (1, CFG_FLASH_BASE + 0x20000000,
+ CFG_FLASH_BASE + 0x20000000,
+ MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
+ 0, 1, BOOKE_PAGESZ_256M, 1),
+ SET_TLB_ENTRY (1, CFG_FLASH_BASE + 0x30000000,
+ CFG_FLASH_BASE + 0x30000000,
+ MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
+ 0, 0, BOOKE_PAGESZ_256M, 1),
+
+ /*
+ * TLB 4: 256M Non-cacheable, guarded
+ * 0x80000000 256M PCI1 MEM First half
+ */
+ SET_TLB_ENTRY (1, CFG_PCI1_MEM_PHYS, CFG_PCI1_MEM_PHYS,
+ MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
+ 0, 4, BOOKE_PAGESZ_256M, 1),
+
+ /*
+ * TLB 5: 256M Non-cacheable, guarded
+ * 0x90000000 256M PCI1 MEM Second half
+ */
+ SET_TLB_ENTRY (1, CFG_PCI1_MEM_PHYS + 0x10000000,
+ CFG_PCI1_MEM_PHYS + 0x10000000,
+ MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
+ 0, 5, BOOKE_PAGESZ_256M, 1),
+
+#ifdef CONFIG_PCIE1
+ /*
+ * TLB 6: 256M Non-cacheable, guarded
+ * 0xc0000000 256M PCI express MEM First half
+ */
+ SET_TLB_ENTRY (1, CFG_PCIE1_MEM_BASE, CFG_PCIE1_MEM_BASE,
+ MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
+ 0, 6, BOOKE_PAGESZ_256M, 1),
+#else /* !CONFIG_PCIE */
+ /*
+ * TLB 6: 256M Non-cacheable, guarded
+ * 0xb0000000 256M Rapid IO MEM First half
+ */
+ SET_TLB_ENTRY (1, CFG_RIO_MEM_BASE, CFG_RIO_MEM_BASE,
+ MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
+ 0, 6, BOOKE_PAGESZ_256M, 1),
+
+#endif /* CONFIG_PCIE */
+
+ /*
+ * TLB 7: 64M Non-cacheable, guarded
+ * 0xa0000000 1M CCSRBAR
+ * 0xa2000000 16M PCI1 IO
+ * 0xa3000000 16M CAN and NAND Flash
+ */
+ SET_TLB_ENTRY (1, CFG_CCSRBAR, CFG_CCSRBAR_PHYS,
+ MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
+ 0, 7, BOOKE_PAGESZ_64M, 1),
+
+ /*
+ * TLB 8+9: 512M DDR, cache disabled (needed for memory test)
+ * 0x00000000 512M DDR System memory
+ * Without SPD EEPROM configured DDR, this must be setup manually.
+ * Make sure the TLB count at the top of this table is correct.
+ * Likely it needs to be increased by two for these entries.
+ */
+ SET_TLB_ENTRY (1, CFG_DDR_SDRAM_BASE, CFG_DDR_SDRAM_BASE,
+ MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
+ 0, 8, BOOKE_PAGESZ_256M, 1),
+
+ SET_TLB_ENTRY (1, CFG_DDR_SDRAM_BASE + 0x10000000,
+ CFG_DDR_SDRAM_BASE + 0x10000000,
+ MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
+ 0, 9, BOOKE_PAGESZ_256M, 1),
+
+#ifdef CONFIG_PCIE1
+ /*
+ * TLB 10: 16M Non-cacheable, guarded
+ * 0xaf000000 16M PCI express IO
+ */
+ SET_TLB_ENTRY (1, CFG_PCIE1_IO_BASE, CFG_PCIE1_IO_BASE,
+ MAS3_SX | MAS3_SW | MAS3_SR, MAS2_I | MAS2_G,
+ 0, 10, BOOKE_PAGESZ_16M, 1),
+#endif /* CONFIG_PCIE */
+
+#endif /* CONFIG_TQM_BIGFLASH */
};
int num_tlb_entries = ARRAY_SIZE (tlb_table);