Connect the support for ZynqMP eFUSE one-time field-programmable
bit array.
The command argument:
-drive if=pflash,index=3,...
Can be used to optionally connect the bit array to a
backend storage, such that field-programmed values
in one invocation can be made available to next
invocation.
The backend storage must be a seekable binary file, and
its size must be 768 bytes or larger. A file with all
binary 0's is a 'blank'.
Signed-off-by: Tong Ho <tong...@xilinx.com>
---
hw/Kconfig | 1 +
hw/arm/xlnx-zcu102.c | 15 +++++++++++++++
hw/arm/xlnx-zynqmp.c | 29 +++++++++++++++++++++++++++++
include/hw/arm/xlnx-zynqmp.h | 3 +++
4 files changed, 48 insertions(+)
diff --git a/hw/Kconfig b/hw/Kconfig
index b6fb6a4507..ad20cce0a9 100644
--- a/hw/Kconfig
+++ b/hw/Kconfig
@@ -82,3 +82,4 @@ config XLNX_ZYNQMP
select CAN_BUS
select PTIMER
select XLNX_BBRAM
+ select XLNX_EFUSE_ZYNQMP
diff --git a/hw/arm/xlnx-zcu102.c b/hw/arm/xlnx-zcu102.c
index b247c5779b..3dc2b5e8ca 100644
--- a/hw/arm/xlnx-zcu102.c
+++ b/hw/arm/xlnx-zcu102.c
@@ -110,6 +110,18 @@ static void bbram_attach_drive(XlnxBBRam *dev)
}
}
+static void efuse_attach_drive(XlnxEFuse *dev)
+{
+ DriveInfo *dinfo;
+ BlockBackend *blk;
+
+ dinfo = drive_get_by_index(IF_PFLASH, 3);
+ blk = dinfo ? blk_by_legacy_dinfo(dinfo) : NULL;
+ if (blk) {
+ qdev_prop_set_drive(DEVICE(dev), "drive", blk);
+ }
+}
+
static void xlnx_zcu102_init(MachineState *machine)
{
XlnxZCU102 *s = ZCU102_MACHINE(machine);
@@ -151,6 +163,9 @@ static void xlnx_zcu102_init(MachineState *machine)
/* Attach bbram backend, if given */
bbram_attach_drive(&s->soc.bbram);
+ /* Attach efuse backend, if given */
+ efuse_attach_drive(&s->soc.efuse);
+
/* Create and plug in the SD cards */
for (i = 0; i < XLNX_ZYNQMP_NUM_SDHCI; i++) {
BusState *bus;
diff --git a/hw/arm/xlnx-zynqmp.c b/hw/arm/xlnx-zynqmp.c
index 1e8e2ddcc2..1c52a575aa 100644
--- a/hw/arm/xlnx-zynqmp.c
+++ b/hw/arm/xlnx-zynqmp.c
@@ -69,6 +69,9 @@
#define BBRAM_ADDR 0xffcd0000
#define BBRAM_IRQ 11
+#define EFUSE_ADDR 0xffcc0000
+#define EFUSE_IRQ 87
+
#define SDHCI_CAPABILITIES 0x280737ec6481 /* Datasheet: UG1085 (v1.7) */
static const uint64_t gem_addr[XLNX_ZYNQMP_NUM_GEMS] = {
@@ -245,6 +248,31 @@ static void xlnx_zynqmp_create_bbram(XlnxZynqMPState *s,
qemu_irq *gic)
sysbus_connect_irq(sbd, 0, gic[BBRAM_IRQ]);
}
+static void xlnx_zynqmp_create_efuse(XlnxZynqMPState *s, qemu_irq *gic)
+{
+ Object *bits = OBJECT(&s->efuse);
+ Object *ctrl = OBJECT(&s->efuse_ctrl);
+ SysBusDevice *sbd;
+
+ object_initialize_child(OBJECT(s), "efuse-ctrl", &s->efuse_ctrl,
+ TYPE_XLNX_ZYNQMP_EFUSE);
+
+ object_initialize_child_with_props(ctrl, "xlnx-efuse@0", bits,
+ sizeof(s->efuse),
+ TYPE_XLNX_EFUSE, &error_abort,
+ "efuse-nr", "3",
+ "efuse-size", "2048",
+ NULL);
+
+ qdev_realize(DEVICE(bits), NULL, &error_abort);
+ object_property_set_link(ctrl, "efuse", bits, &error_abort);
+
+ sbd = SYS_BUS_DEVICE(ctrl);
+ sysbus_realize(sbd, &error_abort);
+ sysbus_mmio_map(sbd, 0, EFUSE_ADDR);
+ sysbus_connect_irq(sbd, 0, gic[EFUSE_IRQ]);
+}
+
static void xlnx_zynqmp_create_unimp_mmio(XlnxZynqMPState *s)
{
static const struct UnimpInfo {
@@ -646,6 +674,7 @@ static void xlnx_zynqmp_realize(DeviceState *dev, Error
**errp)
sysbus_connect_irq(SYS_BUS_DEVICE(&s->rtc), 0, gic_spi[RTC_IRQ]);
xlnx_zynqmp_create_bbram(s, gic_spi);
+ xlnx_zynqmp_create_efuse(s, gic_spi);
xlnx_zynqmp_create_unimp_mmio(s);
for (i = 0; i < XLNX_ZYNQMP_NUM_GDMA_CH; i++) {
diff --git a/include/hw/arm/xlnx-zynqmp.h b/include/hw/arm/xlnx-zynqmp.h
index 067e8a5238..062e637fe4 100644
--- a/include/hw/arm/xlnx-zynqmp.h
+++ b/include/hw/arm/xlnx-zynqmp.h
@@ -37,6 +37,7 @@
#include "net/can_emu.h"
#include "hw/dma/xlnx_csu_dma.h"
#include "hw/nvram/xlnx-bbram.h"
+#include "hw/nvram/xlnx-zynqmp-efuse.h"
#define TYPE_XLNX_ZYNQMP "xlnx-zynqmp"
OBJECT_DECLARE_SIMPLE_TYPE(XlnxZynqMPState, XLNX_ZYNQMP)
@@ -102,6 +103,8 @@ struct XlnxZynqMPState {
MemoryRegion *ddr_ram;
MemoryRegion ddr_ram_low, ddr_ram_high;
XlnxBBRam bbram;
+ XlnxEFuse efuse;
+ XlnxZynqMPEFuse efuse_ctrl;
MemoryRegion mr_unimp[XLNX_ZYNQMP_NUM_UNIMP_AREAS];
--
2.25.1
