[U-Boot] [PATCH 1/4] arm/ls102xa: create TLB to map PCIe region

[York Sun]

On 01/21/2015 01:29 AM, Minghuan Lian wrote:
> LS1021A's PCIe1 region begins 0x40_00000000; PCIe2 begins
> 0x48_00000000. In order to access PCIe device, we must create
> TLB to map the 40bit physical address to 32bit virtual address.
> This patch will enable MMU after DDR is available and creates MMU
> table in DRAM to map all 4G space; then, re-use the reserved space
> to map PCIe region. The following the mapping layout.
> 
> VA mapping:
>     -------  <---- 0GB
>    |       |
>    |       |
>    |-------| <---- 0x24000000
>    |///////|  ===> 192MB VA map for PCIe1 with offset 0x40_0000_0000
>    |-------| <---- 0x300000000
>    |       |
>    |-------| <---- 0x34000000
>    |///////|  ===> 192MB VA map for PCIe2 with offset 0x48_0000_0000
>    |-------| <---- 0x40000000
>    |       |
>    |-------| <---- 0x80000000 DDR0 space start
>    |\\\\\\\|
>    |\\\\\\\|  ===> 2GB VA map for 2GB DDR0 Memory space
>    |\\\\\\\|
>    -------  <---- 4GB DDR0 space end
> 
> Signed-off-by: Minghuan Lian <Minghuan.Lian at freescale.com>
> ---

Applied to u-boot-fsl-qoriq master branch, awaiting upstream.

York