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ArmVirtualizationPkg: VirtFdtDxe: forward FwCfg addresses from DTB to PCDs

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Qemu's firmware configuration interface for ARM consists of two MMIO
registers, a 16-bit selector, and a 64-bit data register that allows the
guest to transfer data with 8, 16, 32, and 64-bit wide accesses. Parse the
base address from the DTB, and expose the registers to the rest of DXE via
dynamic PCDs.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16566 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Laszlo Ersek
2015-01-02 12:04:05 +00:00
committed by lersek
parent 931aae946f
commit ad652d4694
4 changed files with 42 additions and 0 deletions
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3
ArmPlatformPkg/ArmVirtualizationPkg/ArmVirtualizationPkg.dec
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@@ -53,3 +53,6 @@
# PcdArmPsciMethod == 2 : use SMC
#
gArmVirtualizationTokenSpaceGuid.PcdArmPsciMethod|0|UINT32|0x00000003
gArmVirtualizationTokenSpaceGuid.PcdFwCfgSelectorAddress|0x0|UINT64|0x00000004
gArmVirtualizationTokenSpaceGuid.PcdFwCfgDataAddress|0x0|UINT64|0x00000005