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cad6c91045
Since past few years, we have been using "hart features" in OpenSBI to represent all optionalities and multi-letter extensions defined by the RISC-V specifications. The RISC-V profiles specification has taken a different approach and started assigning extension names for all optionalities which did not have any extension name previously. (Refer, https://github.com/riscv/riscv-profiles/blob/main/profiles.adoc) Inspired from the RISC-V profiles specification, we convert OpenSBI hart features into hart extensions. Going forward, we align the extension naming with RISC-V profiles specification. Currently, only "time CSR" and "AIA CSR" have not been assigned extension name but for everything else we have a name. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Atish Patra <atishp@rivosinc.com>
79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2019 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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*/
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#ifndef __SBI_HART_H__
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#define __SBI_HART_H__
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#include <sbi/sbi_types.h>
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/** Possible privileged specification versions of a hart */
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enum sbi_hart_priv_versions {
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/** Unknown privileged specification */
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SBI_HART_PRIV_VER_UNKNOWN = 0,
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/** Privileged specification v1.10 */
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SBI_HART_PRIV_VER_1_10 = 1,
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/** Privileged specification v1.11 */
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SBI_HART_PRIV_VER_1_11 = 2,
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/** Privileged specification v1.12 */
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SBI_HART_PRIV_VER_1_12 = 3,
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};
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/** Possible ISA extensions of a hart */
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enum sbi_hart_extensions {
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/** Hart has Sscofpmt extension */
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SBI_HART_EXT_SSCOFPMF = 0,
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/** HART has HW time CSR (extension name not available) */
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SBI_HART_EXT_TIME,
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/** HART has AIA CSRs (extension name not available) */
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SBI_HART_EXT_AIA,
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/** HART has Smstateen CSR **/
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SBI_HART_EXT_SMSTATEEN,
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/** HART has Sstc extension */
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SBI_HART_EXT_SSTC,
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/** Maximum index of Hart extension */
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SBI_HART_EXT_MAX,
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};
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struct sbi_scratch;
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int sbi_hart_reinit(struct sbi_scratch *scratch);
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int sbi_hart_init(struct sbi_scratch *scratch, bool cold_boot);
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extern void (*sbi_hart_expected_trap)(void);
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static inline ulong sbi_hart_expected_trap_addr(void)
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{
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return (ulong)sbi_hart_expected_trap;
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}
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unsigned int sbi_hart_mhpm_count(struct sbi_scratch *scratch);
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void sbi_hart_delegation_dump(struct sbi_scratch *scratch,
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const char *prefix, const char *suffix);
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unsigned int sbi_hart_pmp_count(struct sbi_scratch *scratch);
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unsigned long sbi_hart_pmp_granularity(struct sbi_scratch *scratch);
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unsigned int sbi_hart_pmp_addrbits(struct sbi_scratch *scratch);
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unsigned int sbi_hart_mhpm_bits(struct sbi_scratch *scratch);
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int sbi_hart_pmp_configure(struct sbi_scratch *scratch);
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int sbi_hart_priv_version(struct sbi_scratch *scratch);
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void sbi_hart_get_priv_version_str(struct sbi_scratch *scratch,
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char *version_str, int nvstr);
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bool sbi_hart_has_extension(struct sbi_scratch *scratch,
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enum sbi_hart_extensions ext);
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void sbi_hart_get_extensions_str(struct sbi_scratch *scratch,
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char *extension_str, int nestr);
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void __attribute__((noreturn)) sbi_hart_hang(void);
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void __attribute__((noreturn))
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sbi_hart_switch_mode(unsigned long arg0, unsigned long arg1,
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unsigned long next_addr, unsigned long next_mode,
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bool next_virt);
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#endif
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