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| author | Michael Brown | 2025-05-23 13:13:02 +0200 |
|---|---|---|
| committer | Michael Brown | 2025-05-23 13:31:46 +0200 |
| commit | 4a39b877dd165cc903da2e15cb1c42d1d115cc80 (patch) | |
| tree | 7886a3d5fba2212561739d99c32ebaf1f66ddcaa /src/include | |
| parent | [initrd] Allow for images straddling the top of the reshuffle region (diff) | |
| download | ipxe-4a39b877dd165cc903da2e15cb1c42d1d115cc80.tar.gz ipxe-4a39b877dd165cc903da2e15cb1c42d1d115cc80.tar.xz ipxe-4a39b877dd165cc903da2e15cb1c42d1d115cc80.zip | |
[initrd] Split out initrd construction from bzimage.c
Provide a reusable function initrd_load_all() to load all initrds
(including any constructed CPIO headers) into a contiguous memory
region, and support functions to find the constructed total length and
permissible post-reshuffling load address range.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/ipxe/initrd.h | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/src/include/ipxe/initrd.h b/src/include/ipxe/initrd.h index 10533b53b..0b955a381 100644 --- a/src/include/ipxe/initrd.h +++ b/src/include/ipxe/initrd.h @@ -10,13 +10,15 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #include <stdint.h> - -extern void initrd_reshuffle ( physaddr_t bottom ); -extern int initrd_reshuffle_check ( size_t len, physaddr_t bottom ); +#include <ipxe/memmap.h> /** Initial ramdisk chunk alignment */ #define INITRD_ALIGN 4096 +extern void initrd_reshuffle ( void ); +extern int initrd_region ( size_t len, struct memmap_region *region ); +extern size_t initrd_load_all ( void *address ); + /** * Align initrd length * @@ -29,4 +31,15 @@ initrd_align ( size_t len ) { return ( ( len + INITRD_ALIGN - 1 ) & ~( INITRD_ALIGN - 1 ) ); } +/** + * Get required length for initrds + * + * @ret len Required length + */ +static inline __attribute__ (( always_inline )) size_t +initrd_len ( void ) { + + return initrd_load_all ( NULL ); +} + #endif /* _IPXE_INITRD_H */ |