Searched hist:ab74206b605eb6e8d573de15161bb14971556714 (Results 1 – 4 of 4) sorted by relevance
| /rk3399_ARM-atf/plat/allwinner/common/ |
| H A D | sunxi_scpi_pm.c | ab74206b605eb6e8d573de15161bb14971556714 Mon Dec 14 02:45:49 UTC 2020 Samuel Holland <samuel@sholland.org> refactor(plat/allwinner): map SRAM as device memory by default
The SRAM on Allwinner platforms is shared between BL31 and coprocessor
firmware. Previously, SRAM was mapped as normal memory by default.
This scheme requires carveouts and cache maintenance code for proper
synchronization with the coprocessor.
A better scheme is to only map pages owned by BL31 as normal memory,
and leave everything else as device memory. This removes the need for
cache maintenance, and it makes the mapping for BL31 RW data explicit
instead of magic.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Change-Id: I820ddeba2dfa2396361c2322308c0db51b55c348
|
| H A D | sunxi_common.c | ab74206b605eb6e8d573de15161bb14971556714 Mon Dec 14 02:45:49 UTC 2020 Samuel Holland <samuel@sholland.org> refactor(plat/allwinner): map SRAM as device memory by default
The SRAM on Allwinner platforms is shared between BL31 and coprocessor
firmware. Previously, SRAM was mapped as normal memory by default.
This scheme requires carveouts and cache maintenance code for proper
synchronization with the coprocessor.
A better scheme is to only map pages owned by BL31 as normal memory,
and leave everything else as device memory. This removes the need for
cache maintenance, and it makes the mapping for BL31 RW data explicit
instead of magic.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Change-Id: I820ddeba2dfa2396361c2322308c0db51b55c348
|
| /rk3399_ARM-atf/plat/allwinner/common/include/ |
| H A D | platform_def.h | ab74206b605eb6e8d573de15161bb14971556714 Mon Dec 14 02:45:49 UTC 2020 Samuel Holland <samuel@sholland.org> refactor(plat/allwinner): map SRAM as device memory by default
The SRAM on Allwinner platforms is shared between BL31 and coprocessor
firmware. Previously, SRAM was mapped as normal memory by default.
This scheme requires carveouts and cache maintenance code for proper
synchronization with the coprocessor.
A better scheme is to only map pages owned by BL31 as normal memory,
and leave everything else as device memory. This removes the need for
cache maintenance, and it makes the mapping for BL31 RW data explicit
instead of magic.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Change-Id: I820ddeba2dfa2396361c2322308c0db51b55c348
|
| /rk3399_ARM-atf/plat/allwinner/sun50i_a64/ |
| H A D | sunxi_power.c | ab74206b605eb6e8d573de15161bb14971556714 Mon Dec 14 02:45:49 UTC 2020 Samuel Holland <samuel@sholland.org> refactor(plat/allwinner): map SRAM as device memory by default
The SRAM on Allwinner platforms is shared between BL31 and coprocessor
firmware. Previously, SRAM was mapped as normal memory by default.
This scheme requires carveouts and cache maintenance code for proper
synchronization with the coprocessor.
A better scheme is to only map pages owned by BL31 as normal memory,
and leave everything else as device memory. This removes the need for
cache maintenance, and it makes the mapping for BL31 RW data explicit
instead of magic.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Change-Id: I820ddeba2dfa2396361c2322308c0db51b55c348
|