import Unicorn2

qemu/target/riscv/pmp.h

@@ -0,0 +1,64 @@
+/*
+ * QEMU RISC-V PMP (Physical Memory Protection)
+ *
+ * Author: Daire McNamara, daire.mcnamara@emdalo.com
+ *         Ivan Griffin, ivan.griffin@emdalo.com
+ *
+ * This provides a RISC-V Physical Memory Protection interface
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2 or later, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef RISCV_PMP_H
+#define RISCV_PMP_H
+
+typedef enum {
+    PMP_READ  = 1 << 0,
+    PMP_WRITE = 1 << 1,
+    PMP_EXEC  = 1 << 2,
+    PMP_LOCK  = 1 << 7
+} pmp_priv_t;
+
+typedef enum {
+    PMP_AMATCH_OFF,  /* Null (off)                            */
+    PMP_AMATCH_TOR,  /* Top of Range                          */
+    PMP_AMATCH_NA4,  /* Naturally aligned four-byte region    */
+    PMP_AMATCH_NAPOT /* Naturally aligned power-of-two region */
+} pmp_am_t;
+
+typedef struct {
+    target_ulong addr_reg;
+    uint8_t  cfg_reg;
+} pmp_entry_t;
+
+typedef struct {
+    target_ulong sa;
+    target_ulong ea;
+} pmp_addr_t;
+
+typedef struct {
+    pmp_entry_t pmp[MAX_RISCV_PMPS];
+    pmp_addr_t  addr[MAX_RISCV_PMPS];
+    uint32_t num_rules;
+} pmp_table_t;
+
+void pmpcfg_csr_write(CPURISCVState *env, uint32_t reg_index,
+    target_ulong val);
+target_ulong pmpcfg_csr_read(CPURISCVState *env, uint32_t reg_index);
+void pmpaddr_csr_write(CPURISCVState *env, uint32_t addr_index,
+    target_ulong val);
+target_ulong pmpaddr_csr_read(CPURISCVState *env, uint32_t addr_index);
+bool pmp_hart_has_privs(CPURISCVState *env, target_ulong addr,
+    target_ulong size, pmp_priv_t priv, target_ulong mode);
+
+#endif