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From: <pbhagavatula@marvell.com>
To: <jerinj@marvell.com>, <juraj.linkes@pantheon.tech>, Jan Viktorin
<viktorin@rehivetech.com>, Ruifeng Wang <ruifeng.wang@arm.com>, "Bruce
Richardson" <bruce.richardson@intel.com>
CC: <dev@dpdk.org>, Pavan Nikhilesh <pbhagavatula@marvell.com>
Date: Wed, 5 May 2021 17:44:22 +0530
Message-ID: <20210505121423.850-1-pbhagavatula@marvell.com>
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Subject: [dpdk-dev] [PATCH] config/arm: add ability to express arch
extensions
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From: Pavan Nikhilesh <pbhagavatula@marvell.com>
The ARM architecture allows SoCs to have extensions in addition
to base profiles such as Large System Extension (LSE), CRC etc.
Add ability to declare SoC specific extensions.
Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---
More details about ARM extensions
https://developer.arm.com/documentation/102378/0200
config/arm/meson.build | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/config/arm/meson.build b/config/arm/meson.build
index 22cd81319..8aa961e5b 100644
--- a/config/arm/meson.build
+++ b/config/arm/meson.build
@@ -230,6 +230,7 @@ soc_cn10k = {
['RTE_MAX_LCORE', 24],
['RTE_MAX_NUMA_NODES', 1]
],
+ 'extensions' : ['lse', 'crc'],
'part_number': '0xd49',
'numa': false
}
@@ -387,6 +388,7 @@ else
endif
soc_flags = []
+ soc_extensions = []
if soc_config.has_key('not_supported')
error('SoC @0@ not supported.'.format(soc))
elif soc_config != {}
@@ -394,6 +396,7 @@ else
implementer_config = implementers[implementer_id]
part_number = soc_config['part_number']
soc_flags = soc_config.get('flags', [])
+ soc_extensions = soc_config.get('extensions', [])
if not soc_config.get('numa', true)
has_libnuma = 0
endif
@@ -431,6 +434,11 @@ else
# apply supported machine args
machine_args = [] # Clear previous machine args
foreach flag: part_number_config['machine_args']
+ if flag.startswith('-march') and soc_extensions.length() != 0
+ foreach ex: soc_extensions
+ flag += '+' + ex
+ endforeach
+ endif
if cc.has_argument(flag)
machine_args += flag
endif
--
2.17.1