a94b36ddd6
We use the rom infrastructure to write firmware and/or initial kernel blobs into guest address space. So we're basically emulating the cache off phase on very early system bootup. That phase is usually responsible for clearing the instruction cache for anything it writes into cachable memory, to ensure that after reboot we don't happen to execute stale bits from the instruction cache. So we need to invalidate the icache every time we write a rom into guest address space. We do not need to do this for every DMA since the guest expects it has to flush the icache manually in that case. This fixes random reboot issues on e5500 (booke ppc) for me. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
#ifndef CPU_COMMON_H
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#define CPU_COMMON_H 1
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/* CPU interfaces that are target independent. */
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#ifndef CONFIG_USER_ONLY
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#include "exec/hwaddr.h"
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#endif
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#ifndef NEED_CPU_H
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#include "exec/poison.h"
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#endif
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#include "qemu/bswap.h"
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#include "qemu/queue.h"
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/**
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* CPUListState:
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* @cpu_fprintf: Print function.
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* @file: File to print to using @cpu_fprint.
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*
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* State commonly used for iterating over CPU models.
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*/
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typedef struct CPUListState {
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fprintf_function cpu_fprintf;
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FILE *file;
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} CPUListState;
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#if !defined(CONFIG_USER_ONLY)
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enum device_endian {
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DEVICE_NATIVE_ENDIAN,
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DEVICE_BIG_ENDIAN,
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DEVICE_LITTLE_ENDIAN,
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};
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/* address in the RAM (different from a physical address) */
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#if defined(CONFIG_XEN_BACKEND)
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typedef uint64_t ram_addr_t;
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# define RAM_ADDR_MAX UINT64_MAX
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# define RAM_ADDR_FMT "%" PRIx64
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#else
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typedef uintptr_t ram_addr_t;
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# define RAM_ADDR_MAX UINTPTR_MAX
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# define RAM_ADDR_FMT "%" PRIxPTR
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#endif
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/* memory API */
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typedef void CPUWriteMemoryFunc(void *opaque, hwaddr addr, uint32_t value);
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typedef uint32_t CPUReadMemoryFunc(void *opaque, hwaddr addr);
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void qemu_ram_remap(ram_addr_t addr, ram_addr_t length);
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/* This should not be used by devices. */
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MemoryRegion *qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr);
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void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev);
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void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf,
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int len, int is_write);
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static inline void cpu_physical_memory_read(hwaddr addr,
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void *buf, int len)
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{
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cpu_physical_memory_rw(addr, buf, len, 0);
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}
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static inline void cpu_physical_memory_write(hwaddr addr,
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const void *buf, int len)
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{
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cpu_physical_memory_rw(addr, (void *)buf, len, 1);
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}
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void *cpu_physical_memory_map(hwaddr addr,
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hwaddr *plen,
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int is_write);
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void cpu_physical_memory_unmap(void *buffer, hwaddr len,
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int is_write, hwaddr access_len);
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void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque));
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bool cpu_physical_memory_is_io(hwaddr phys_addr);
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/* Coalesced MMIO regions are areas where write operations can be reordered.
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* This usually implies that write operations are side-effect free. This allows
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* batching which can make a major impact on performance when using
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* virtualization.
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*/
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void qemu_flush_coalesced_mmio_buffer(void);
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uint32_t ldub_phys(hwaddr addr);
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uint32_t lduw_le_phys(hwaddr addr);
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uint32_t lduw_be_phys(hwaddr addr);
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uint32_t ldl_le_phys(hwaddr addr);
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uint32_t ldl_be_phys(hwaddr addr);
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uint64_t ldq_le_phys(hwaddr addr);
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uint64_t ldq_be_phys(hwaddr addr);
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void stb_phys(hwaddr addr, uint32_t val);
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void stw_le_phys(hwaddr addr, uint32_t val);
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void stw_be_phys(hwaddr addr, uint32_t val);
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void stl_le_phys(hwaddr addr, uint32_t val);
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void stl_be_phys(hwaddr addr, uint32_t val);
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void stq_le_phys(hwaddr addr, uint64_t val);
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void stq_be_phys(hwaddr addr, uint64_t val);
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#ifdef NEED_CPU_H
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uint32_t lduw_phys(hwaddr addr);
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uint32_t ldl_phys(hwaddr addr);
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uint64_t ldq_phys(hwaddr addr);
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void stl_phys_notdirty(hwaddr addr, uint32_t val);
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void stw_phys(hwaddr addr, uint32_t val);
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void stl_phys(hwaddr addr, uint32_t val);
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void stq_phys(hwaddr addr, uint64_t val);
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#endif
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void cpu_physical_memory_write_rom(hwaddr addr,
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const uint8_t *buf, int len);
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void cpu_flush_icache_range(hwaddr start, int len);
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extern struct MemoryRegion io_mem_rom;
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extern struct MemoryRegion io_mem_notdirty;
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typedef void (RAMBlockIterFunc)(void *host_addr,
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ram_addr_t offset, ram_addr_t length, void *opaque);
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void qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque);
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#endif
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#endif /* !CPU_COMMON_H */
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