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author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
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committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/u-boot/board/jse/README.txt | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/u-boot/board/jse/README.txt')
-rw-r--r-- | qemu/roms/u-boot/board/jse/README.txt | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/board/jse/README.txt b/qemu/roms/u-boot/board/jse/README.txt new file mode 100644 index 000000000..84497db70 --- /dev/null +++ b/qemu/roms/u-boot/board/jse/README.txt @@ -0,0 +1,48 @@ +JSE 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. + + +Memory Bank 1 -- SystemACE Controller +------------------------------------- + +0xf0000000 - 0xf00fffff + +The SystemACE chip is along on peripheral bank CS#1. We don't need +much space, but 1Meg is the smallest we can configure the chip to +allocate. We need it far away from the flash region, because this +region is set to be non-cached. + + +Internal Peripherals +-------------------- + +0xef600300 - 0xef6008ff + +These are scattered various peripherals internal to the PPC405GPr +chip. + +SDRAM +----- + +0x00000000 - 0x07ffffff (128 MBytes) |