From f03965490e4e4223903e79a4ec97139ccdd48e1b Mon Sep 17 00:00:00 2001 From: Martin Kaiser Date: Fri, 17 Jan 2020 14:09:31 +0000 Subject: i.MX: add an emulation for RNGC Add an emulation for the RNGC random number generator and the compatible RNGB variant. These peripherals are included (at least) in imx25 and imx35 chipsets. The emulation supports the initial self test, reseeding the prng and reading random numbers. Signed-off-by: Martin Kaiser Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- include/hw/misc/imx_rngc.h | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 include/hw/misc/imx_rngc.h (limited to 'include/hw/misc/imx_rngc.h') diff --git a/include/hw/misc/imx_rngc.h b/include/hw/misc/imx_rngc.h new file mode 100644 index 0000000000..f0d2b44d4f --- /dev/null +++ b/include/hw/misc/imx_rngc.h @@ -0,0 +1,35 @@ +/* + * Freescale i.MX RNGC emulation + * + * Copyright (C) 2020 Martin Kaiser + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#ifndef IMX_RNGC_H +#define IMX_RNGC_H + +#include "hw/sysbus.h" + +#define TYPE_IMX_RNGC "imx.rngc" +#define IMX_RNGC(obj) OBJECT_CHECK(IMXRNGCState, (obj), TYPE_IMX_RNGC) + +typedef struct IMXRNGCState { + /*< private >*/ + SysBusDevice parent_obj; + + /*< public >*/ + MemoryRegion iomem; + + uint8_t op_self_test; + uint8_t op_seed; + uint8_t mask; + bool auto_seed; + + QEMUBH *self_test_bh; + QEMUBH *seed_bh; + qemu_irq irq; +} IMXRNGCState; + +#endif /* IMX_RNGC_H */ -- cgit 1.4.1