diff options
Diffstat (limited to 'qemu/hw/arm/armv7m.c')
| -rw-r--r-- | qemu/hw/arm/armv7m.c | 265 |
1 files changed, 0 insertions, 265 deletions
diff --git a/qemu/hw/arm/armv7m.c b/qemu/hw/arm/armv7m.c deleted file mode 100644 index bb2a22d96..000000000 --- a/qemu/hw/arm/armv7m.c +++ /dev/null @@ -1,265 +0,0 @@ -/* - * ARMV7M System emulation. - * - * Copyright (c) 2006-2007 CodeSourcery. - * Written by Paul Brook - * - * This code is licensed under the GPL. - */ - -#include "qemu/osdep.h" -#include "qapi/error.h" -#include "qemu-common.h" -#include "cpu.h" -#include "hw/sysbus.h" -#include "hw/arm/arm.h" -#include "hw/loader.h" -#include "elf.h" -#include "sysemu/qtest.h" -#include "qemu/error-report.h" - -/* Bitbanded IO. Each word corresponds to a single bit. */ - -/* Get the byte address of the real memory for a bitband access. */ -static inline uint32_t bitband_addr(void * opaque, uint32_t addr) -{ - uint32_t res; - - res = *(uint32_t *)opaque; - res |= (addr & 0x1ffffff) >> 5; - return res; - -} - -static uint32_t bitband_readb(void *opaque, hwaddr offset) -{ - uint8_t v; - cpu_physical_memory_read(bitband_addr(opaque, offset), &v, 1); - return (v & (1 << ((offset >> 2) & 7))) != 0; -} - -static void bitband_writeb(void *opaque, hwaddr offset, - uint32_t value) -{ - uint32_t addr; - uint8_t mask; - uint8_t v; - addr = bitband_addr(opaque, offset); - mask = (1 << ((offset >> 2) & 7)); - cpu_physical_memory_read(addr, &v, 1); - if (value & 1) - v |= mask; - else - v &= ~mask; - cpu_physical_memory_write(addr, &v, 1); -} - -static uint32_t bitband_readw(void *opaque, hwaddr offset) -{ - uint32_t addr; - uint16_t mask; - uint16_t v; - addr = bitband_addr(opaque, offset) & ~1; - mask = (1 << ((offset >> 2) & 15)); - mask = tswap16(mask); - cpu_physical_memory_read(addr, &v, 2); - return (v & mask) != 0; -} - -static void bitband_writew(void *opaque, hwaddr offset, - uint32_t value) -{ - uint32_t addr; - uint16_t mask; - uint16_t v; - addr = bitband_addr(opaque, offset) & ~1; - mask = (1 << ((offset >> 2) & 15)); - mask = tswap16(mask); - cpu_physical_memory_read(addr, &v, 2); - if (value & 1) - v |= mask; - else - v &= ~mask; - cpu_physical_memory_write(addr, &v, 2); -} - -static uint32_t bitband_readl(void *opaque, hwaddr offset) -{ - uint32_t addr; - uint32_t mask; - uint32_t v; - addr = bitband_addr(opaque, offset) & ~3; - mask = (1 << ((offset >> 2) & 31)); - mask = tswap32(mask); - cpu_physical_memory_read(addr, &v, 4); - return (v & mask) != 0; -} - -static void bitband_writel(void *opaque, hwaddr offset, - uint32_t value) -{ - uint32_t addr; - uint32_t mask; - uint32_t v; - addr = bitband_addr(opaque, offset) & ~3; - mask = (1 << ((offset >> 2) & 31)); - mask = tswap32(mask); - cpu_physical_memory_read(addr, &v, 4); - if (value & 1) - v |= mask; - else - v &= ~mask; - cpu_physical_memory_write(addr, &v, 4); -} - -static const MemoryRegionOps bitband_ops = { - .old_mmio = { - .read = { bitband_readb, bitband_readw, bitband_readl, }, - .write = { bitband_writeb, bitband_writew, bitband_writel, }, - }, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -#define TYPE_BITBAND "ARM,bitband-memory" -#define BITBAND(obj) OBJECT_CHECK(BitBandState, (obj), TYPE_BITBAND) - -typedef struct { - /*< private >*/ - SysBusDevice parent_obj; - /*< public >*/ - - MemoryRegion iomem; - uint32_t base; -} BitBandState; - -static int bitband_init(SysBusDevice *dev) -{ - BitBandState *s = BITBAND(dev); - - memory_region_init_io(&s->iomem, OBJECT(s), &bitband_ops, &s->base, - "bitband", 0x02000000); - sysbus_init_mmio(dev, &s->iomem); - return 0; -} - -static void armv7m_bitband_init(void) -{ - DeviceState *dev; - - dev = qdev_create(NULL, TYPE_BITBAND); - qdev_prop_set_uint32(dev, "base", 0x20000000); - qdev_init_nofail(dev); - sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0x22000000); - - dev = qdev_create(NULL, TYPE_BITBAND); - qdev_prop_set_uint32(dev, "base", 0x40000000); - qdev_init_nofail(dev); - sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0x42000000); -} - -/* Board init. */ - -static void armv7m_reset(void *opaque) -{ - ARMCPU *cpu = opaque; - - cpu_reset(CPU(cpu)); -} - -/* Init CPU and memory for a v7-M based board. - mem_size is in bytes. - Returns the NVIC array. */ - -DeviceState *armv7m_init(MemoryRegion *system_memory, int mem_size, int num_irq, - const char *kernel_filename, const char *cpu_model) -{ - ARMCPU *cpu; - CPUARMState *env; - DeviceState *nvic; - int image_size; - uint64_t entry; - uint64_t lowaddr; - int big_endian; - MemoryRegion *hack = g_new(MemoryRegion, 1); - - if (cpu_model == NULL) { - cpu_model = "cortex-m3"; - } - cpu = cpu_arm_init(cpu_model); - if (cpu == NULL) { - fprintf(stderr, "Unable to find CPU definition\n"); - exit(1); - } - env = &cpu->env; - - armv7m_bitband_init(); - - nvic = qdev_create(NULL, "armv7m_nvic"); - qdev_prop_set_uint32(nvic, "num-irq", num_irq); - env->nvic = nvic; - qdev_init_nofail(nvic); - sysbus_connect_irq(SYS_BUS_DEVICE(nvic), 0, - qdev_get_gpio_in(DEVICE(cpu), ARM_CPU_IRQ)); - -#ifdef TARGET_WORDS_BIGENDIAN - big_endian = 1; -#else - big_endian = 0; -#endif - - if (!kernel_filename && !qtest_enabled()) { - fprintf(stderr, "Guest image must be specified (using -kernel)\n"); - exit(1); - } - - if (kernel_filename) { - image_size = load_elf(kernel_filename, NULL, NULL, &entry, &lowaddr, - NULL, big_endian, EM_ARM, 1, 0); - if (image_size < 0) { - image_size = load_image_targphys(kernel_filename, 0, mem_size); - lowaddr = 0; - } - if (image_size < 0) { - error_report("Could not load kernel '%s'", kernel_filename); - exit(1); - } - } - - /* Hack to map an additional page of ram at the top of the address - space. This stops qemu complaining about executing code outside RAM - when returning from an exception. */ - memory_region_init_ram(hack, NULL, "armv7m.hack", 0x1000, &error_fatal); - vmstate_register_ram_global(hack); - memory_region_add_subregion(system_memory, 0xfffff000, hack); - - qemu_register_reset(armv7m_reset, cpu); - return nvic; -} - -static Property bitband_properties[] = { - DEFINE_PROP_UINT32("base", BitBandState, base, 0), - DEFINE_PROP_END_OF_LIST(), -}; - -static void bitband_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); - - k->init = bitband_init; - dc->props = bitband_properties; -} - -static const TypeInfo bitband_info = { - .name = TYPE_BITBAND, - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(BitBandState), - .class_init = bitband_class_init, -}; - -static void armv7m_register_types(void) -{ - type_register_static(&bitband_info); -} - -type_init(armv7m_register_types) |