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ab15e20ea9
Enhance the existing extension probing mechanism by adding support for more extensions and probing using the "riscv,isa" property. This patch is ported from the latest upstream linux. Signed-off-by: Mayuresh Chitale <mchitale@ventanamicro.com> Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
37 lines
1.4 KiB
C
37 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef _ASM_CPUFEATURE_H
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#define _ASM_CPUFEATURE_H
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struct riscv_isa_ext_data {
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const unsigned int id;
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const char *name;
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const char *property;
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const unsigned int *subset_ext_ids;
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const unsigned int subset_ext_size;
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int (*validate)(const struct riscv_isa_ext_data *data, const unsigned long *isa_bitmap);
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};
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#define _RISCV_ISA_EXT_DATA(_name, _id, _subset_exts, _subset_exts_size, _validate) { \
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.name = #_name, \
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.property = #_name, \
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.id = _id, \
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.subset_ext_ids = _subset_exts, \
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.subset_ext_size = _subset_exts_size, \
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.validate = _validate \
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}
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#define __RISCV_ISA_EXT_DATA(_name, _id) _RISCV_ISA_EXT_DATA(_name, _id, NULL, 0, NULL)
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#define __RISCV_ISA_EXT_DATA_VALIDATE(_name, _id, _validate) \
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_RISCV_ISA_EXT_DATA(_name, _id, NULL, 0, _validate)
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/* Used to declare pure "lasso" extension (Zk for instance) */
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#define __RISCV_ISA_EXT_BUNDLE(_name, _bundled_exts) \
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_RISCV_ISA_EXT_DATA(_name, RISCV_ISA_EXT_INVALID, _bundled_exts, \
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ARRAY_SIZE(_bundled_exts), NULL)
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/* Used to declare extensions that are a superset of other extensions (Zvbb for instance) */
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#define __RISCV_ISA_EXT_SUPERSET(_name, _id, _sub_exts) \
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_RISCV_ISA_EXT_DATA(_name, _id, _sub_exts, ARRAY_SIZE(_sub_exts), NULL)
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#define __RISCV_ISA_EXT_SUPERSET_VALIDATE(_name, _id, _sub_exts, _validate) \
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_RISCV_ISA_EXT_DATA(_name, _id, _sub_exts, ARRAY_SIZE(_sub_exts), _validate)
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#endif
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