Move memory mapping of Xen node to Grant Table driver system init
function. After moving mapping we don't need anymore records of
xen-xen node into 'mmu_regions' array, so they were deleted from
all SoCs: Rcar Gen3/Gen4 and XenVM.
We need at least 16M of virtual address space to map memory of Xen
node, so the virtual memory sized has been increased to 32 MB, it
should be enough for basic use-cases and mapping of 16M mem region
of Xen node.
Unfortunately, after moving we also need to increase number of XLAT
tables. The previous code was more efficient if we talking about
usage of XLAT tables, because it mapped grant tables using a higher-
order table that allows mapping blocks of 2MB. And after the changes
is maps every 4KB page, so we need more XLAT tables.
Increase number of grant frames, it is needed to sync stage 1 and stage 2
memory mappings, previously we map only one page on stage 2 and further
usage of unmap regions can cause MMU translation errors.
Perform mapping stage 1 before mapping for stage 2 (add to physmap),
because right after stage 1 we can try to access memory and if it is
unmap in stage 2, error will be received during translation.
Note: Xen Grant Table driver doesn't use Zephyr Device Model.
Authored-by: Mykola Kvach <mykola_kvach@epam.com>
Co-authored-by: Oleksii Moisieiev <oleksii_moisieiev@epam.com>
Signed-off-by: Mykola Kvach <mykola_kvach@epam.com>
In some arm64 boards, MMU regions are set so userspace can access all
peripherals (MT_P_RW_U_RW), including the GIC.
This seems like a mistake, which has been copy/pasted in some boards.
Change this to no userspace access by default (MT_P_RW_U_NA),
like the other boards.
Signed-off-by: Henri Xavier <datacomos@huawei.com>
This commit introduces driver for granting access for own grant
table and for mapping/unmapping foreign gref. Grant tables are used
for data exchange between Xen domains via shared memory page(s) (e.g.
for sharing ring buffer with driver data) This functionality is
widely used and needed for implementing PV backend/frontend drivers.
Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
In order to bring consistency in-tree, migrate all soc code to the
new prefix <zephyr/...>. Note that the conversion has been scripted,
refer to zephyrproject-rtos#45388 for more details.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
This commit removes usage of Xen emulated PL011 SBSA UART in favor of
Xen PV console minimal implementation. Now boot log and application
output can be directly taken from hypervisor domain console, instead of
virtual UART.
Also Xen VM doc was updated according to these changes.
Signed-off-by: Dmytro Firsov <dmytro_firsov@epam.com>
Split ARM and ARM64 architectures.
Details:
- CONFIG_ARM64 is decoupled from CONFIG_ARM (not a subset anymore)
- Arch and include AArch64 files are in a dedicated directory
(arch/arm64 and include/arch/arm64)
- AArch64 boards and SoC are moved to soc/arm64 and boards/arm64
- AArch64-specific DTS files are moved to dts/arm64
- The A72 support for the bcm_vk/viper board is moved in the
boards/bcm_vk/viper directory
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
Mykola Kvach