7.13.5. 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
7.13.5.1. Mandatory functions
- marvell_get_amb_memory_map
Returns the AMB windows configuration and the number of windows
7.13.5.2. 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
7.13.5.3. Examples
struct addr_map_win amb_memory_map[] = {
{0xf900, AMB_DEV_CS0_ID},
};