Add support for decompressing the initrd before using it as the RAM Disk.
For now, only LZ4 compression is supported.
It is advised to use smaller block sizes for the compressed initrd to
reduce the size of heap memory required for decompression.
Requires adding the lz4 external module on application layer.
Signed-off-by: Svitlana Drozd <svitlana_drozd@epam.com>
Signed-off-by: Mykyta Poturai <mykyta_poturai@epam.com>
Ramdisk access fails with data abort when MMU is enabled, due to
using a physical address for the buffer instead of a mapped virtual
address.
Add support for MMU configurations by mapping the ramdisk
buffer to a virtual address space and storing this pointer in
the device's private data (`struct ram_disk_data`). Update all accesses
to use this virtual address when MMU is enabled.
With MMU disabled, the ramdisk continues to use
the original physical addressing as before.
Signed-off-by: Mykyta Poturai <mykyta_poturai@epam.com>
Signed-off-by: Svitlana Drozd <svitlana_drozd@epam.com>
Refactored RAM disk device instantiation to use a ram_disk_data struct
as the device data, instead of assigning disk_info directly.
This change was made to enable adding additional device-specific data
in the future, improving flexibility for RAM disk devices.
Signed-off-by: Svitlana Drozd <svitlana_drozd@epam.com>
Implement `disk_access_erase` by setting all bytes to 0x00, with the
same bounds checking as `disk_access_write`.
Signed-off-by: Jordan Yates <jordan@embeint.com>
Add DISK_IOCTL_CTRL_DEINIT ioctl command to disk subsystem. When
disk_access_ioctl() is called with this command, the disk will be
de-initialized. After this IOCTL completes, the disk can safely be
reinitialized.
Fixes#60628
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
Add DISK_IOCTL_CTRL_INIT IOCTL to initialize a disk. This IOCTL is
intended to replace disk_access_init() for new applications, but
disk_access_init() is kept for legacy compatibility. The INIT IOCTL is
added to better match the path that will be used for disk
de-initialization. Like the disk_access_init() calls,
DISK_IOCTL_CTRL_INIT calls are reference counted
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
Rework RAM disk driver to be configured using devicetree and
support multiple instances.
This patch also removes a copy of the RAM disk driver,
tests/subsys/fs/fat_fs_dual_drive/src/disk_access_test_drv.c,
that was there for testing multiple disk drivers support.
Bonus: one SYS_INIT() less and a memory region can be exported to the
host.
Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
The init infrastructure, found in `init.h`, is currently used by:
- `SYS_INIT`: to call functions before `main`
- `DEVICE_*`: to initialize devices
They are all sorted according to an initialization level + a priority.
`SYS_INIT` calls are really orthogonal to devices, however, the required
function signature requires a `const struct device *dev` as a first
argument. The only reason for that is because the same init machinery is
used by devices, so we have something like:
```c
struct init_entry {
int (*init)(const struct device *dev);
/* only set by DEVICE_*, otherwise NULL */
const struct device *dev;
}
```
As a result, we end up with such weird/ugly pattern:
```c
static int my_init(const struct device *dev)
{
/* always NULL! add ARG_UNUSED to avoid compiler warning */
ARG_UNUSED(dev);
...
}
```
This is really a result of poor internals isolation. This patch proposes
a to make init entries more flexible so that they can accept sytem
initialization calls like this:
```c
static int my_init(void)
{
...
}
```
This is achieved using a union:
```c
union init_function {
/* for SYS_INIT, used when init_entry.dev == NULL */
int (*sys)(void);
/* for DEVICE*, used when init_entry.dev != NULL */
int (*dev)(const struct device *dev);
};
struct init_entry {
/* stores init function (either for SYS_INIT or DEVICE*)
union init_function init_fn;
/* stores device pointer for DEVICE*, NULL for SYS_INIT. Allows
* to know which union entry to call.
*/
const struct device *dev;
}
```
This solution **does not increase ROM usage**, and allows to offer clean
public APIs for both SYS_INIT and DEVICE*. Note that however, init
machinery keeps a coupling with devices.
**NOTE**: This is a breaking change! All `SYS_INIT` functions will need
to be converted to the new signature. See the script offered in the
following commit.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
init: convert SYS_INIT functions to the new signature
Conversion scripted using scripts/utils/migrate_sys_init.py.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
manifest: update projects for SYS_INIT changes
Update modules with updated SYS_INIT calls:
- hal_ti
- lvgl
- sof
- TraceRecorderSource
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
tests: devicetree: devices: adjust test
Adjust test according to the recently introduced SYS_INIT
infrastructure.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
tests: kernel: threads: adjust SYS_INIT call
Adjust to the new signature: int (*init_fn)(void);
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
In order to bring consistency in-tree, migrate all drivers to the new
prefix <zephyr/...>. Note that the conversion has been scripted, refer
to #45388 for more details.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Add checks for the upper boundary in access_read/access_write
instead of the homeopathic ASSERTS.
Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
Move disk driver interface to own header and
separate disk access interface and disk driver interface.
Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
The files disk_access_usdhc.c, disk_access_spi_sdhc.c,
disk_access_stm32_sdmmc.c, disk_access_ram.c and
disk_access_flash.c are actually drivers for block devices and SD/MMC
controllers. This patch moves this drivers to drivers/disk and
reworks the configuration so that the drivers are selected when
the corresponding node is enabled.
Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
2021-03-23 12:16:01 +01:00
Renamed from subsys/disk/disk_access_ram.c (Browse further)
