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[block] Allow for additional SAN boot parameters alongside filename

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The drive specification alone does not necessarily contain enough
information to perform a SAN boot (or local disk boot) under UEFI.  If
the next-stage bootloader is installed in the EFI system partition
under a non-standard name (e.g. "\EFI\debian\grubx64.efi") then this
explicit boot filename must also be specified.

Generalise this concept to use a "SAN boot configuration parameters"
structure (currently containing only the optional explicit boot
filename), to allow for easy expansion to provide other parameters
such as the partition UUID or volume label.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2024-03-05 20:20:10 +00:00
parent b1c13cc43e
commit 636ccb4ca5
8 changed files with 45 additions and 23 deletions
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5
src/arch/x86/interface/pcbios/int13.c
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@@ -1511,7 +1511,7 @@ static int int13_load_eltorito ( unsigned int drive, struct segoff *address ) {
* Attempt to boot from an INT 13 drive
*
* @v drive Drive number
* @v filename Filename (or NULL to use default)
* @v config Boot configuration parameters
* @ret rc Return status code
*
* This boots from the specified INT 13 drive by loading the Master
@@ -1521,7 +1521,8 @@ static int int13_load_eltorito ( unsigned int drive, struct segoff *address ) {
*
* Note that this function can never return success, by definition.
*/
static int int13_boot ( unsigned int drive, const char *filename __unused ) {
static int int13_boot ( unsigned int drive,
struct san_boot_config *config __unused ) {
struct memory_map memmap;
struct segoff address;
int rc;