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target/riscv: remove RISCV_FEATURE_MMU

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RISCV_FEATURE_MMU is set whether cpu->cfg.mmu is set, so let's just use
the flag directly instead.

With this change the enum is also removed. It is worth noticing that
this enum, and all the RISCV_FEATURES_* that were contained in it,
predates the existence of the cpu->cfg object. Today, using cpu->cfg is
an easier way to retrieve all the features and extensions enabled in the
hart.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Weiwei Li <liweiwei@iscas.ac.cn>
Reviewed-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Message-ID: <20230222185205.355361-10-dbarboza@ventanamicro.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Daniel Henrique Barboza 2023-02-22 15:52:04 -03:00 • committed by Palmer Dabbelt
parent c95c9d200e
commit dcf654a3e8
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GPG key ID: 2E1319F35FBB1889
6 changed files with 5 additions and 16 deletions
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2
target/riscv/cpu_helper.c
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@ -796,7 +796,7 @@ static int get_physical_address(CPURISCVState *env, hwaddr *physical,
mode = PRV_U;
}
if (mode == PRV_M || !riscv_feature(env, RISCV_FEATURE_MMU)) {
if (mode == PRV_M || !riscv_cpu_cfg(env)->mmu) {
*physical = addr;
*prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
return TRANSLATE_SUCCESS;