u-boot/board/netstal/hcu4
Niklaus Giger a079494853 ppc4xx: HCU4/5. Use FLASH_CFI_LEGACY
Cleanup: Remove custom flash driver for 8 bit boot-eprom and replace it with
the FLASH_CFI_LEGACY et al. config options.

Signed-off-by: Niklaus Giger <niklaus.giger@netstal.com>
2008-03-15 07:25:50 +01:00
..
config.mk ppc4xx: Netstal HCU4 board. Added POST. Various fixes 2008-01-17 13:49:51 +01:00
hcu4.c ppc4xx: HCU4/5. Use FLASH_CFI_LEGACY 2008-03-15 07:25:50 +01:00
Makefile ppc4xx: HCU4/5. Use FLASH_CFI_LEGACY 2008-03-15 07:25:50 +01:00
README.txt Add PPC4xx-HCU4 and HCU5 boards: READMEs 2007-08-10 09:09:19 +02:00
u-boot.lds Fix linker scripts: add NOLOAD atribute to .bss/.sbss sections 2008-01-12 20:31:39 +01:00

HCU4 Configuration Details

Memory Bank 0 -- Flash chip
---------------------------

0xfff00000 - 0xffffffff

The flash chip is really only 512Kbytes, but the high address bit of
the 1Meg region is ignored, so the flash is replicated through the
region. Thus, this is consistent with a flash base address 0xfff80000.

The placement at the end is to be consistent with reset behavior,
where the processor itself initially uses this bus to load the branch
vector and start running.

On-Chip Memory
--------------

0xf4000000 - 0xf4000fff

The 405GPr includes a 4K on-chip memory that can be placed however
software chooses. I choose to place the memory at this address, to
keep it out of the cachable areas.


Internal Peripherals
--------------------

0xef600300 - 0xef6008ff

These are scattered various peripherals internal to the PPC405GPr
chip.

Chip-Select 2: Flash Memory
---------------------------

0x70000000

Chip-Select 3: CAN Interface
----------------------------
0x7800000


Chip-Select 4: IMC-bus standard
-------------------------------

Our IO-Bus (slow version)


Chip-Select 5: IMC-bus fast (inactive)
--------------------------------------

Our IO-Bus (fast, but not yet use)


Memory Bank 1 -- SDRAM
-------------------------------------

0x00000000 - 0x1ffffff   # Default 32 MB