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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=205.220.168.131; envelope-from=brian.cain@oss.qualcomm.com; helo=mx0a-0031df01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @qualcomm.com) X-ZM-MESSAGEID: 1756785039144116600 From: Brian Cain Signed-off-by: Brian Cain --- target/hexagon/op_helper.c | 47 +++++++++++++++++++++++++++++++++++++- 1 file changed, 46 insertions(+), 1 deletion(-) diff --git a/target/hexagon/op_helper.c b/target/hexagon/op_helper.c index a8b44a73bd..53bf0591ec 100644 --- a/target/hexagon/op_helper.c +++ b/target/hexagon/op_helper.c @@ -1531,7 +1531,52 @@ static bool handle_pmu_sreg_write(CPUHexagonState *e= nv, uint32_t reg, =20 static void modify_syscfg(CPUHexagonState *env, uint32_t val) { - g_assert_not_reached(); + g_assert(bql_locked()); + + uint32_t syscfg_read_only_mask =3D 0x80001c00; + uint32_t old =3D arch_get_system_reg(env, HEX_SREG_SYSCFG); + uint8_t old_en =3D GET_SYSCFG_FIELD(SYSCFG_PCYCLEEN, old); + uint8_t old_gie =3D GET_SYSCFG_FIELD(SYSCFG_GIE, old); + uint8_t new_en =3D GET_SYSCFG_FIELD(SYSCFG_PCYCLEEN, val); + uint8_t new_gie =3D GET_SYSCFG_FIELD(SYSCFG_GIE, val); + CPUState *cs; + target_ulong old_mmu_enable =3D GET_SYSCFG_FIELD(SYSCFG_MMUEN, old); + target_ulong new_mmu_enable =3D + GET_SYSCFG_FIELD(SYSCFG_MMUEN, val); + + /* clear read-only bits if they are set in the new value. */ + val &=3D ~syscfg_read_only_mask; + /* if read-only are currently set in syscfg keep them set. */ + val |=3D (old & syscfg_read_only_mask); + + arch_set_system_reg(env, HEX_SREG_SYSCFG, val); + + /* Check for change in MMU enable */ + if (new_mmu_enable && !old_mmu_enable) { + hex_mmu_on(env); + } else if (!new_mmu_enable && old_mmu_enable) { + hex_mmu_off(env); + } + + /* Changing pcycle enable from 0 to 1 resets the counters */ + if (old_en =3D=3D 0 && new_en =3D=3D 1) { + CPU_FOREACH(cs) { + cpu_env(cs)->t_cycle_count =3D 0; + } + } + + /* See if global interrupts are turned on */ + if (!old_gie && new_gie) { + qemu_log_mask(CPU_LOG_INT, "%s: global interrupts enabled\n", __fu= nc__); + hex_interrupt_update(env); + } + + if (qemu_loglevel_mask(LOG_UNIMP)) { + int new_v2x =3D GET_SYSCFG_FIELD(SYSCFG_V2X, val); + if (!new_v2x) { + qemu_log("HVX: 64 byte vector length is unsupported\n"); + } + } } =20 static uint32_t hexagon_find_last_irq(CPUHexagonState *env, uint32_t vid) --=20 2.34.1