GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
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+Marvell IOB address decoding bindings
+=====================================
+
+IO bridge configuration driver (3rd stage address translation) for Marvell Armada 8K and 8K+ SoCs.
+
+The IOB includes a description of the address decoding configuration.
+
+IOB supports up to n (in CP110 n=24) windows for external memory transaction.
+When a transaction passes through the IOB, its address is compared to each of
+the enabled windows. If there is a hit and it passes the security checks, it is
+advanced to the target port.
+
+Mandatory functions
+-------------------
+
+- marvell_get_iob_memory_map
+     Returns the IOB windows configuration and the number of windows
+
+Mandatory structures
+--------------------
+
+- iob_memory_map
+     Array that includes the configuration of the windows. Every window/entry is
+     a struct which has 3 parameters:
+
+       - Base address of the window
+       - Size of the window
+       - Target-ID of the window
+
+Target ID options
+-----------------
+
+- **0x0** = Internal configuration space
+- **0x1** = MCI0
+- **0x2** = PEX1_X1
+- **0x3** = PEX2_X1
+- **0x4** = PEX0_X4
+- **0x5** = NAND flash
+- **0x6** = RUNIT (NOR/SPI/BootRoom)
+- **0x7** = MCI1
+
+Example
+-------
+
+.. code:: c
+
+	struct addr_map_win iob_memory_map[] = {
+		{0x00000000f7000000,	0x0000000001000000,	PEX1_TID}, /* PEX1_X1 window */
+		{0x00000000f8000000,	0x0000000001000000,	PEX2_TID}, /* PEX2_X1 window */
+		{0x00000000f6000000,	0x0000000001000000,	PEX0_TID}, /* PEX0_X4 window */
+		{0x00000000f9000000,	0x0000000001000000,	NAND_TID}  /* NAND window */
+	};