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target/riscv: add 'parent' in profile description

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Certain S-mode profiles, like RVA22S64 and RVA23S64, mandate all the
mandatory extensions of their respective U-mode profiles. RVA22S64
includes all mandatory extensions of RVA22U64, and the same happens with
RVA23 profiles.

Add a 'parent' field to allow profiles to enable other profiles. This
will allow us to describe S-mode profiles by specifying their parent
U-mode profile, then adding just the S-mode specific extensions.

We're naming the field 'parent' to consider the possibility of other
uses (e.g. a s-mode profile including a previous s-mode profile) in the
future.

Suggested-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20231218125334.37184-25-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Daniel Henrique Barboza 2023-12-18 09:53:32 -03:00 • committed by Alistair Francis
parent 55398025e7
commit 79593ca4b0
3 changed files with 15 additions and 1 deletions
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1
target/riscv/cpu.c
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@ -1539,6 +1539,7 @@ Property riscv_cpu_options[] = {
* having a cfg offset) at this moment.
*/
static RISCVCPUProfile RVA22U64 = {
.parent = NULL,
.name = "rva22u64",
.misa_ext = RVI | RVM | RVA | RVF | RVD | RVC | RVU,
.priv_spec = RISCV_PROFILE_ATTR_UNUSED,