diff options
Diffstat (limited to 'docs/plat/marvell/misc/mvebu-amb.rst')
| -rw-r--r-- | docs/plat/marvell/misc/mvebu-amb.rst | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/docs/plat/marvell/misc/mvebu-amb.rst b/docs/plat/marvell/misc/mvebu-amb.rst new file mode 100644 index 00000000..d734003d --- /dev/null +++ b/docs/plat/marvell/misc/mvebu-amb.rst @@ -0,0 +1,58 @@ +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}, + }; |