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

2026-09-06 03:52:57 +08:00
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+AMB - AXI MBUS address decoding
+===============================
+
+AXI to M-bridge decoding unit driver for Marvell Armada 8K and 8K+ SoCs.
+
+The Runit offers a second level of address windows lookup. It is used to map
+transaction towards the CD BootROM, SPI0, SPI1 and Device bus (NOR).
+
+The Runit contains eight configurable windows. Each window defines a contiguous,
+address space and the properties associated with that address space.
+
+::
+
+  Unit        Bank         ATTR
+  Device-Bus  DEV_BOOT_CS  0x2F
+              DEV_CS0      0x3E
+              DEV_CS1      0x3D
+              DEV_CS2      0x3B
+              DEV_CS3      0x37
+  SPI-0       SPI_A_CS0    0x1E
+              SPI_A_CS1    0x5E
+              SPI_A_CS2    0x9E
+              SPI_A_CS3    0xDE
+              SPI_A_CS4    0x1F
+              SPI_A_CS5    0x5F
+              SPI_A_CS6    0x9F
+              SPI_A_CS7    0xDF
+  SPI         SPI_B_CS0    0x1A
+              SPI_B_CS1    0x5A
+              SPI_B_CS2    0x9A
+              SPI_B_CS3    0xDA
+  BOOT_ROM    BOOT_ROM     0x1D
+  UART        UART         0x01
+
+Mandatory functions
+-------------------
+
+- marvell_get_amb_memory_map
+    Returns the AMB windows configuration and the number of windows
+
+Mandatory structures
+--------------------
+
+- amb_memory_map
+    Array that include the configuration of the windows. Every window/entry is a
+    struct which has 2 parameters:
+
+      - Base address of the window
+      - Attribute of the window
+
+Examples
+--------
+
+.. code:: c
+
+    struct addr_map_win amb_memory_map[] = {
+        {0xf900,	AMB_DEV_CS0_ID},
+    };