From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40073) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eieSy-000685-BF for qemu-devel@nongnu.org; Mon, 05 Feb 2018 05:57:41 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eieSx-0007H6-N5 for qemu-devel@nongnu.org; Mon, 05 Feb 2018 05:57:40 -0500 From: Peter Maydell Date: Mon, 5 Feb 2018 10:57:14 +0000 Message-Id: <20180205105720.14620-3-peter.maydell@linaro.org> In-Reply-To: <20180205105720.14620-1-peter.maydell@linaro.org> References: <20180205105720.14620-1-peter.maydell@linaro.org> Subject: [Qemu-devel] [PATCH 2/8] hw/intc/armv7m_nvic: Fix ICSR PENDNMISET/CLR handling List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: patches@linaro.org The PENDNMISET/CLR bits in the ICSR should be RAZ/WI from NonSecure state if the AIRCR.BFHFNMINS bit is zero. We had misimplemented this as making the bits RAZ/WI from both Secure and NonSecure states. Fix this bug by checking attrs.secure so that Secure code can pend and unpend NMIs. Signed-off-by: Peter Maydell --- hw/intc/armv7m_nvic.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c index 63da0fee34..06b9598fbe 100644 --- a/hw/intc/armv7m_nvic.c +++ b/hw/intc/armv7m_nvic.c @@ -830,8 +830,8 @@ static uint32_t nvic_readl(NVICState *s, uint32_t offset, MemTxAttrs attrs) } } /* NMIPENDSET */ - if ((cpu->env.v7m.aircr & R_V7M_AIRCR_BFHFNMINS_MASK) && - s->vectors[ARMV7M_EXCP_NMI].pending) { + if ((attrs.secure || (cpu->env.v7m.aircr & R_V7M_AIRCR_BFHFNMINS_MASK)) + && s->vectors[ARMV7M_EXCP_NMI].pending) { val |= (1 << 31); } /* ISRPREEMPT: RES0 when halting debug not implemented */ @@ -1193,7 +1193,7 @@ static void nvic_writel(NVICState *s, uint32_t offset, uint32_t value, break; } case 0xd04: /* Interrupt Control State (ICSR) */ - if (cpu->env.v7m.aircr & R_V7M_AIRCR_BFHFNMINS_MASK) { + if (attrs.secure || cpu->env.v7m.aircr & R_V7M_AIRCR_BFHFNMINS_MASK) { if (value & (1 << 31)) { armv7m_nvic_set_pending(s, ARMV7M_EXCP_NMI, false); } else if (value & (1 << 30) && -- 2.16.1