diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/blkmap.h | 29 | ||||
| -rw-r--r-- | include/efi.h | 13 |
2 files changed, 42 insertions, 0 deletions
diff --git a/include/blkmap.h b/include/blkmap.h index 754d8671b01..57555fda4fb 100644 --- a/include/blkmap.h +++ b/include/blkmap.h @@ -7,6 +7,7 @@ #ifndef _BLKMAP_H #define _BLKMAP_H +#include <blk.h> #include <dm/lists.h> /** @@ -104,4 +105,32 @@ int blkmap_destroy(struct udevice *dev); int blkmap_create_ramdisk(const char *label, ulong image_addr, ulong image_size, struct udevice **devp); +/** + * blkmap_get_preserved_pmem_slices() - Look for memory mapped preserved slices + * @cb: Callback function to call for the blkmap slice + * @ctx: Argument to be passed to the callback function + * + * The function is used to iterate through all the blkmap slices, looking + * specifically for memory mapped blkmap mapping which has been + * created with the preserve attribute. The function looks for such slices + * with the relevant attributes and then calls the callback function which + * then does additional configuration as needed. The callback function is + * invoked for all the discovered slices, unless there is an error returned + * by the callback, in which case the function returns that error. + * + * The callback function has the following arguments + * @ctx: Argument to be passed to the callback function + * @addr: Start address of the memory mapped slice + * @size: Size of the memory mapped slice + * + * Typically, the callback will perform some configuration needed for the + * information passed on to it. An example of this would be setting up the + * pmem node in a device-tree(passed through the ctx argument) with the + * parameters passed on to the callback. + * + * Return: 0 on success, negative error on failure + */ +int blkmap_get_preserved_pmem_slices(int (*cb)(void *ctx, u64 addr, + u64 size), void *ctx); + #endif /* _BLKMAP_H */ diff --git a/include/efi.h b/include/efi.h index d005cb6181e..f9bbb175c3a 100644 --- a/include/efi.h +++ b/include/efi.h @@ -705,4 +705,17 @@ static inline bool efi_use_host_arch(void) */ int efi_get_pxe_arch(void); +/** + * fdt_efi_pmem_setup() - Pmem setup in DT and EFI memory map + * @fdt: Devicetree to add the pmem nodes to + * + * Iterate through all the blkmap devices, look for BLKMAP_MEM devices, + * and add pmem nodes corresponding to the blkmap slice to the + * devicetree along with removing the corresponding region from the + * EFI memory map. + * + * Returns: 0 on success, negative error on failure + */ +int fdt_efi_pmem_setup(void *fdt); + #endif /* _LINUX_EFI_H */ |