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platform/qemu/virt: Dynamically calculate xlen

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The QEMU virt machine can be either 32 or 66 bit. Don't hard code the
CPU bit length and instead let the compiler determine it.

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Alistair Francis
2019-01-17 17:33:47 -08:00
committed by Anup Patel
parent b4c72deba9
commit 5a91fec1a8
3 changed files with 16 additions and 2 deletions
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platform/template/config.mk
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@@ -12,6 +12,8 @@ platform-cppflags-y =
# -mabi=lp64 -march=rv64imafdc -mcmodel=medany
# For a 32 bits platform, this will likely be:
# -mabi=lp32 -march=rv32imafdc -mcmodel=medlow
# You can also use the Makefile variable OPENSBI_CC_XLEN for the xlen
# See the QEMU virt machine for an example of this
platform-cflags-y = -mabi=lp64 -march=rv64imafdc -mcmodel=medany
platform-asflags-y = -mabi=lp64 -march=rv64imafdc -mcmodel=medany