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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>
This commit is contained in:
Tong Ho 2023-10-31 11:46:10 -07:00 committed by Peter Maydell
parent 921923583f
commit 3b22376ba4
3 changed files with 22 additions and 0 deletions

1
hw/arm/Kconfig
View File

@ -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

16
hw/arm/xlnx-versal.c
View File

@ -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);

5
include/hw/arm/xlnx-versal.h
View File

@ -30,6 +30,7 @@
#include "hw/dma/xlnx_csu_dma.h"
#include "hw/misc/xlnx-versal-crl.h"
#include "hw/misc/xlnx-versal-pmc-iou-slcr.h"
#include "hw/misc/xlnx-versal-trng.h"
#include "hw/net/xlnx-versal-canfd.h"
#include "hw/misc/xlnx-versal-cfu.h"
#include "hw/misc/xlnx-versal-cframe-reg.h"
@ -115,6 +116,7 @@ struct Versal {
} iou;
XlnxZynqMPRTC rtc;
XlnxVersalTRng trng;
XlnxBBRam bbram;
XlnxEFuse efuse;
XlnxVersalEFuseCtrl efuse_ctrl;
@ -159,6 +161,7 @@ struct Versal {
#define VERSAL_OSPI_IRQ 124
#define VERSAL_SD0_IRQ_0 126
#define VERSAL_EFUSE_IRQ 139
#define VERSAL_TRNG_IRQ 141
#define VERSAL_RTC_ALARM_IRQ 142
#define VERSAL_RTC_SECONDS_IRQ 143
@ -328,4 +331,6 @@ struct Versal {
#define MM_PMC_CRP_SIZE 0x10000
#define MM_PMC_RTC 0xf12a0000
#define MM_PMC_RTC_SIZE 0x10000
#define MM_PMC_TRNG 0xf1230000
#define MM_PMC_TRNG_SIZE 0x10000
#endif