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Diffstat (limited to 'qemu/roms/seabios/src/hw/ramdisk.c')
-rw-r--r--qemu/roms/seabios/src/hw/ramdisk.c108
1 files changed, 0 insertions, 108 deletions
diff --git a/qemu/roms/seabios/src/hw/ramdisk.c b/qemu/roms/seabios/src/hw/ramdisk.c
deleted file mode 100644
index adec1d1b3..000000000
--- a/qemu/roms/seabios/src/hw/ramdisk.c
+++ /dev/null
@@ -1,108 +0,0 @@
-// Code for emulating a drive via high-memory accesses.
-//
-// Copyright (C) 2009 Kevin O'Connor <kevin@koconnor.net>
-//
-// This file may be distributed under the terms of the GNU LGPLv3 license.
-
-#include "biosvar.h" // GET_GLOBALFLAT
-#include "block.h" // struct drive_s
-#include "bregs.h" // struct bregs
-#include "e820map.h" // e820_add
-#include "malloc.h" // memalign_tmphigh
-#include "memmap.h" // PAGE_SIZE
-#include "output.h" // dprintf
-#include "romfile.h" // romfile_findprefix
-#include "stacks.h" // call16_int
-#include "std/disk.h" // DISK_RET_SUCCESS
-#include "string.h" // memset
-#include "util.h" // process_ramdisk_op
-
-void
-ramdisk_setup(void)
-{
- if (!CONFIG_FLASH_FLOPPY)
- return;
-
- // Find image.
- struct romfile_s *file = romfile_findprefix("floppyimg/", NULL);
- if (!file)
- return;
- const char *filename = file->name;
- u32 size = file->size;
- dprintf(3, "Found floppy file %s of size %d\n", filename, size);
- int ftype = find_floppy_type(size);
- if (ftype < 0) {
- dprintf(3, "No floppy type found for ramdisk size\n");
- return;
- }
-
- // Allocate ram for image.
- void *pos = memalign_tmphigh(PAGE_SIZE, size);
- if (!pos) {
- warn_noalloc();
- return;
- }
- e820_add((u32)pos, size, E820_RESERVED);
-
- // Copy image into ram.
- int ret = file->copy(file, pos, size);
- if (ret < 0)
- return;
-
- // Setup driver.
- struct drive_s *drive = init_floppy((u32)pos, ftype);
- if (!drive)
- return;
- drive->type = DTYPE_RAMDISK;
- dprintf(1, "Mapping floppy %s to addr %p\n", filename, pos);
- char *desc = znprintf(MAXDESCSIZE, "Ramdisk [%s]", &filename[10]);
- boot_add_floppy(drive, desc, bootprio_find_named_rom(filename, 0));
-}
-
-static int
-ramdisk_copy(struct disk_op_s *op, int iswrite)
-{
- u32 offset = GET_GLOBALFLAT(op->drive_gf->cntl_id);
- offset += (u32)op->lba * DISK_SECTOR_SIZE;
- u64 opd = GDT_DATA | GDT_LIMIT(0xfffff) | GDT_BASE((u32)op->buf_fl);
- u64 ramd = GDT_DATA | GDT_LIMIT(0xfffff) | GDT_BASE(offset);
-
- u64 gdt[6];
- if (iswrite) {
- gdt[2] = opd;
- gdt[3] = ramd;
- } else {
- gdt[2] = ramd;
- gdt[3] = opd;
- }
-
- // Call int 1587 to copy data.
- struct bregs br;
- memset(&br, 0, sizeof(br));
- br.flags = F_CF|F_IF;
- br.ah = 0x87;
- br.es = GET_SEG(SS);
- br.si = (u32)gdt;
- br.cx = op->count * DISK_SECTOR_SIZE / 2;
- call16_int(0x15, &br);
-
- if (br.flags & F_CF)
- return DISK_RET_EBADTRACK;
- return DISK_RET_SUCCESS;
-}
-
-int
-ramdisk_process_op(struct disk_op_s *op)
-{
- if (!CONFIG_FLASH_FLOPPY)
- return 0;
-
- switch (op->command) {
- case CMD_READ:
- return ramdisk_copy(op, 0);
- case CMD_WRITE:
- return ramdisk_copy(op, 1);
- default:
- return default_process_op(op);
- }
-}