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| author | Tong Ho <tong.ho@amd.com> | 2023-10-31 11:46:10 -0700 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2023-11-02 14:42:03 +0000 |
| commit | 3b22376ba48fff06039c90f56372610448fe60e8 (patch) | |
| tree | 3d887c70e2e4938c3499c465e5751cd2e4710921 /hw/arm | |
| parent | 921923583fb2583a277e3b3d6cb8e8e13c622d48 (diff) | |
| download | qemu-3b22376ba48fff06039c90f56372610448fe60e8.zip qemu-3b22376ba48fff06039c90f56372610448fe60e8.tar.gz qemu-3b22376ba48fff06039c90f56372610448fe60e8.tar.bz2 | |
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 <tong.ho@amd.com>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20231031184611.3029156-3-tong.ho@amd.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/arm')
| -rw-r--r-- | hw/arm/Kconfig | 1 | ||||
| -rw-r--r-- | hw/arm/xlnx-versal.c | 16 |
2 files changed, 17 insertions, 0 deletions
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); |