diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2019-02-01 14:55:43 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2019-02-01 14:55:43 +0000 |
| commit | 5aeb36896600ff92aee1083ed17e80f069befb93 (patch) | |
| tree | 306ba784eb755b101d8a7c0b887bb537aa9a63a7 /include/hw | |
| parent | c1f572579eefe18e56c7135e2a7c0698f0488b92 (diff) | |
hw/misc/armsse-cpuid: Implement SSE-200 CPU_IDENTITY register block
The SSE-200 has a CPU_IDENTITY register block, which is a set of
read-only registers. As well as the usual PID/CID registers, there
is a single CPUID register which indicates whether the CPU is CPU 0
or CPU 1. Implement a model of this register block.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190121185118.18550-20-peter.maydell@linaro.org
Diffstat (limited to 'include/hw')
| -rw-r--r-- | include/hw/misc/armsse-cpuid.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/include/hw/misc/armsse-cpuid.h b/include/hw/misc/armsse-cpuid.h new file mode 100644 index 0000000000..0ef33fcaba --- /dev/null +++ b/include/hw/misc/armsse-cpuid.h @@ -0,0 +1,41 @@ +/* + * ARM SSE-200 CPU_IDENTITY register block + * + * Copyright (c) 2019 Linaro Limited + * Written by Peter Maydell + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 or + * (at your option) any later version. + */ + +/* + * This is a model of the "CPU_IDENTITY" register block which is part of the + * Arm SSE-200 and documented in + * http://infocenter.arm.com/help/topic/com.arm.doc.101104_0100_00_en/corelink_sse200_subsystem_for_embedded_technical_reference_manual_101104_0100_00_en.pdf + * + * QEMU interface: + * + QOM property "CPUID": the value to use for the CPUID register + * + sysbus MMIO region 0: the system information register bank + */ + +#ifndef HW_MISC_ARMSSE_CPUID_H +#define HW_MISC_ARMSSE_CPUID_H + +#include "hw/sysbus.h" + +#define TYPE_ARMSSE_CPUID "armsse-cpuid" +#define ARMSSE_CPUID(obj) OBJECT_CHECK(ARMSSECPUID, (obj), TYPE_ARMSSE_CPUID) + +typedef struct ARMSSECPUID { + /*< private >*/ + SysBusDevice parent_obj; + + /*< public >*/ + MemoryRegion iomem; + + /* Properties */ + uint32_t cpuid; +} ARMSSECPUID; + +#endif |