From 3b22376ba48fff06039c90f56372610448fe60e8 Mon Sep 17 00:00:00 2001 From: Tong Ho Date: Tue, 31 Oct 2023 11:46:10 -0700 Subject: hw/arm: xlnx-versal-virt: Add AMD/Xilinx TRNG device Connect the support for Versal True Random Number Generator (TRNG) device. Warning: unlike the TRNG component in a real device from the Versal device familiy, the connected TRNG model is not of cryptographic grade and is not intended for use cases when cryptograpically strong TRNG is needed. Signed-off-by: Tong Ho Reviewed-by: Francisco Iglesias Reviewed-by: Peter Maydell Message-id: 20231031184611.3029156-3-tong.ho@amd.com Signed-off-by: Peter Maydell --- hw/arm/Kconfig | 1 + hw/arm/xlnx-versal.c | 16 ++++++++++++++++ 2 files changed, 17 insertions(+) (limited to 'hw/arm') diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig index 841f313..e35007e 100644 --- a/hw/arm/Kconfig +++ b/hw/arm/Kconfig @@ -482,6 +482,7 @@ config XLNX_VERSAL select XLNX_BBRAM select XLNX_EFUSE_VERSAL select XLNX_USB_SUBSYS + select XLNX_VERSAL_TRNG config NPCM7XX bool diff --git a/hw/arm/xlnx-versal.c b/hw/arm/xlnx-versal.c index fa556d8..4f74a64 100644 --- a/hw/arm/xlnx-versal.c +++ b/hw/arm/xlnx-versal.c @@ -373,6 +373,21 @@ static void versal_create_rtc(Versal *s, qemu_irq *pic) qdev_get_gpio_in(DEVICE(&s->pmc.apb_irq_orgate), 0)); } +static void versal_create_trng(Versal *s, qemu_irq *pic) +{ + SysBusDevice *sbd; + MemoryRegion *mr; + + object_initialize_child(OBJECT(s), "trng", &s->pmc.trng, + TYPE_XLNX_VERSAL_TRNG); + sbd = SYS_BUS_DEVICE(&s->pmc.trng); + sysbus_realize(sbd, &error_fatal); + + mr = sysbus_mmio_get_region(sbd, 0); + memory_region_add_subregion(&s->mr_ps, MM_PMC_TRNG, mr); + sysbus_connect_irq(sbd, 0, pic[VERSAL_TRNG_IRQ]); +} + static void versal_create_xrams(Versal *s, qemu_irq *pic) { int nr_xrams = ARRAY_SIZE(s->lpd.xram.ctrl); @@ -909,6 +924,7 @@ static void versal_realize(DeviceState *dev, Error **errp) versal_create_sds(s, pic); versal_create_pmc_apb_irq_orgate(s, pic); versal_create_rtc(s, pic); + versal_create_trng(s, pic); versal_create_xrams(s, pic); versal_create_bbram(s, pic); versal_create_efuse(s, pic); -- cgit v1.1