oxmc/ipxe
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

[disklog] Generalise disk log console mechanism

Browse Source 
Split out the generic portions of the INT13 disk log console support
to a separate file that can be shared between BIOS and UEFI platforms.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2026-04-07 13:22:10 +01:00
parent ec38e98d40
commit 480b6f021f
5 changed files with 264 additions and 89 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/include/ipxe/disklog.h
+92
View File
@@ -0,0 +1,92 @@
#ifndef _IPXE_DISKLOG_H
#define _IPXE_DISKLOG_H
/** @file
*
* Disk log console
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
FILE_SECBOOT ( PERMITTED );
#ifndef ASSEMBLY
#include <stdint.h>
#include <ipxe/console.h>
/** Disk log partition header */
struct disklog_header {
/** Magic signature */
char magic[10];
} __attribute__ (( packed ));
/** A disk log */
struct disklog {
/** Console device */
struct console_driver *console;
/** Disk log operations */
struct disklog_operations *op;
/** Logical block data buffer */
uint8_t *buffer;
/** Logical block size */
size_t blksize;
/** Current logical block index */
uint64_t lba;
/** Maximum logical block index */
uint64_t max_lba;
/** Current offset within logical block */
unsigned int offset;
/** Current number of unwritten characters */
unsigned int unwritten;
};
/** Disk log operations */
struct disklog_operations {
/**
* Write current logical block
*
* @ret rc Return status code
*/
int ( * write ) ( void );
};
/**
* Initialise disk log console
*
* @v disklog Disk log
* @v op Disk log operations
* @v console Console device
* @v buffer Data buffer
* @v blksize Logical block size
* @v lba Starting logical block index
* @v max_lba Maximum logical block index
*/
static inline __attribute__ (( always_inline )) void
disklog_init ( struct disklog *disklog, struct disklog_operations *op,
struct console_driver *console, void *buffer, size_t blksize,
uint64_t lba, uint64_t max_lba ) {
disklog->op = op;
disklog->console = console;
disklog->buffer = buffer;
disklog->blksize = blksize;
disklog->lba = lba;
disklog->max_lba = max_lba;
}
extern int disklog_open ( struct disklog *disklog );
extern void disklog_putchar ( struct disklog *disklog, int character );
#endif /* ASSEMBLY */
/** Disk log partition type */
#define DISKLOG_PARTITION_TYPE 0xe0
/** Disk log partition magic signature */
#define DISKLOG_MAGIC "iPXE LOG\n\n"
/** Maximum number of outstanding unwritten characters */
#define DISKLOG_MAX_UNWRITTEN 64
#endif /* _IPXE_DISKLOG_H */
src/include/ipxe/errfile.h
+1
View File
@@ -90,6 +90,7 @@ FILE_SECBOOT ( PERMITTED );
#define ERRFILE_efi_connect ( ERRFILE_CORE | 0x00310000 )
#define ERRFILE_gpio ( ERRFILE_CORE | 0x00320000 )
#define ERRFILE_spcr ( ERRFILE_CORE | 0x00330000 )
#define ERRFILE_disklog ( ERRFILE_CORE | 0x00340000 )
#define ERRFILE_eisa ( ERRFILE_DRIVER | 0x00000000 )
#define ERRFILE_isa ( ERRFILE_DRIVER | 0x00010000 )