motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-08 10:13:56 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

hw/arm: xlnx-versal-virt: Add Xilinx eFUSE device

Browse source 
Connect the support for Versal eFUSE one-time field-programmable
bit array.

The command argument:
  -drive if=pflash,index=1,...
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 3072 bytes or larger. A file with all
binary 0's is a 'blank'.

Signed-off-by: Tong Ho <tong.ho@xilinx.com>
Message-id: 20210917052400.1249094-7-tong.ho@xilinx.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Tong Ho 2021-09-16 22:23:57 -07:00 • committed by Peter Maydell
parent 393185bc9d
commit 5f4910ff12
4 changed files with 102 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

39
hw/arm/xlnx-versal.c
View file

@ -331,6 +331,44 @@ static void versal_create_bbram(Versal *s, qemu_irq *pic)
sysbus_connect_irq(sbd, 0, pic[VERSAL_BBRAM_APB_IRQ_0]);
}
static void versal_realize_efuse_part(Versal *s, Object *dev, hwaddr base)
{
SysBusDevice *part = SYS_BUS_DEVICE(dev);
object_property_set_link(OBJECT(part), "efuse",
OBJECT(&s->pmc.efuse), &error_abort);
sysbus_realize(part, &error_abort);
memory_region_add_subregion(&s->mr_ps, base,
sysbus_mmio_get_region(part, 0));
}
static void versal_create_efuse(Versal *s, qemu_irq *pic)
{
Object *bits = OBJECT(&s->pmc.efuse);
Object *ctrl = OBJECT(&s->pmc.efuse_ctrl);
Object *cache = OBJECT(&s->pmc.efuse_cache);
object_initialize_child(OBJECT(s), "efuse-ctrl", &s->pmc.efuse_ctrl,
TYPE_XLNX_VERSAL_EFUSE_CTRL);
object_initialize_child(OBJECT(s), "efuse-cache", &s->pmc.efuse_cache,
TYPE_XLNX_VERSAL_EFUSE_CACHE);
object_initialize_child_with_props(ctrl, "xlnx-efuse@0", bits,
sizeof(s->pmc.efuse),
TYPE_XLNX_EFUSE, &error_abort,
"efuse-nr", "3",
"efuse-size", "8192",
NULL);
qdev_realize(DEVICE(bits), NULL, &error_abort);
versal_realize_efuse_part(s, ctrl, MM_PMC_EFUSE_CTRL);
versal_realize_efuse_part(s, cache, MM_PMC_EFUSE_CACHE);
sysbus_connect_irq(SYS_BUS_DEVICE(ctrl), 0, pic[VERSAL_EFUSE_IRQ]);
}
/* This takes the board allocated linear DDR memory and creates aliases
* for each split DDR range/aperture on the Versal address map.
*/
@ -420,6 +458,7 @@ static void versal_realize(DeviceState *dev, Error **errp)
versal_create_rtc(s, pic);
versal_create_xrams(s, pic);
versal_create_bbram(s, pic);
versal_create_efuse(s, pic);
versal_map_ddr(s);
versal_unimp(s);