From 3651c28569ba2fa8e959b89681118642162273da Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Mon, 20 Feb 2017 15:35:55 +0000 Subject: armv7m: Abstract out the "load kernel" code MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Abstract the "load kernel" code out of armv7m_init() into its own function. This includes the registration of the CPU reset function, to parallel how we handle this for A profile cores. We make the function public so that boards which choose to directly instantiate an ARMv7M device object can call it. Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Alistair Francis Reviewed-by: Alex Bennée Message-id: 1487604965-23220-2-git-send-email-peter.maydell@linaro.org --- hw/arm/armv7m.c | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) (limited to 'hw/arm') diff --git a/hw/arm/armv7m.c b/hw/arm/armv7m.c index 0c9ca7b..b2cc6e9 100644 --- a/hw/arm/armv7m.c +++ b/hw/arm/armv7m.c @@ -176,10 +176,6 @@ DeviceState *armv7m_init(MemoryRegion *system_memory, int mem_size, int num_irq, ARMCPU *cpu; CPUARMState *env; DeviceState *nvic; - int image_size; - uint64_t entry; - uint64_t lowaddr; - int big_endian; if (cpu_model == NULL) { cpu_model = "cortex-m3"; @@ -199,6 +195,16 @@ DeviceState *armv7m_init(MemoryRegion *system_memory, int mem_size, int num_irq, qdev_init_nofail(nvic); sysbus_connect_irq(SYS_BUS_DEVICE(nvic), 0, qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_IRQ)); + armv7m_load_kernel(cpu, kernel_filename, mem_size); + return nvic; +} + +void armv7m_load_kernel(ARMCPU *cpu, const char *kernel_filename, int mem_size) +{ + int image_size; + uint64_t entry; + uint64_t lowaddr; + int big_endian; #ifdef TARGET_WORDS_BIGENDIAN big_endian = 1; @@ -224,8 +230,15 @@ DeviceState *armv7m_init(MemoryRegion *system_memory, int mem_size, int num_irq, } } + /* CPU objects (unlike devices) are not automatically reset on system + * reset, so we must always register a handler to do so. Unlike + * A-profile CPUs, we don't need to do anything special in the + * handler to arrange that it starts correctly. + * This is arguably the wrong place to do this, but it matches the + * way A-profile does it. Note that this means that every M profile + * board must call this function! + */ qemu_register_reset(armv7m_reset, cpu); - return nvic; } static Property bitband_properties[] = { -- cgit v1.1