From e8ab26c48475e746d0aa0c4da2128c626dc00c0a Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Thu, 15 Feb 2018 18:29:37 +0000 Subject: [PATCH] hw/intc/armv7m_nvic: Implement M profile cache maintenance ops For M profile cores, cache maintenance operations are done by writing to special registers in the system register space. For QEMU, cache operations are always NOPs, since we don't implement the cache. Implementing these explicitly avoids a spurious LOG_GUEST_ERROR when the guest uses them. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20180209165810.6668-4-peter.maydell@linaro.org --- hw/intc/armv7m_nvic.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c index 06b9598fbe..74b25ce92c 100644 --- a/hw/intc/armv7m_nvic.c +++ b/hw/intc/armv7m_nvic.c @@ -1594,6 +1594,18 @@ static void nvic_writel(NVICState *s, uint32_t offset, uint32_t value, } break; } + case 0xf50: /* ICIALLU */ + case 0xf58: /* ICIMVAU */ + case 0xf5c: /* DCIMVAC */ + case 0xf60: /* DCISW */ + case 0xf64: /* DCCMVAU */ + case 0xf68: /* DCCMVAC */ + case 0xf6c: /* DCCSW */ + case 0xf70: /* DCCIMVAC */ + case 0xf74: /* DCCISW */ + case 0xf78: /* BPIALL */ + /* Cache and branch predictor maintenance: for QEMU these always NOP */ + break; default: bad_offset: qemu_log_mask(LOG_GUEST_ERROR,