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-rw-r--r--roms/u-boot/disk/part_iso.c244
1 files changed, 244 insertions, 0 deletions
diff --git a/roms/u-boot/disk/part_iso.c b/roms/u-boot/disk/part_iso.c
new file mode 100644
index 000000000..822f2c4d9
--- /dev/null
+++ b/roms/u-boot/disk/part_iso.c
@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2001
+ * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch.
+ */
+
+#include <common.h>
+#include <blk.h>
+#include <command.h>
+#include <part.h>
+#include <asm/cache.h>
+#include <asm/unaligned.h>
+#include "part_iso.h"
+
+#ifdef CONFIG_HAVE_BLOCK_DEVICE
+
+/* #define ISO_PART_DEBUG */
+
+#ifdef ISO_PART_DEBUG
+#define PRINTF(fmt,args...) printf (fmt ,##args)
+#else
+#define PRINTF(fmt,args...)
+#endif
+
+/* enable this if CDs are written with the PowerPC Platform ID */
+#undef CHECK_FOR_POWERPC_PLATTFORM
+#define CD_SECTSIZE 2048
+
+static unsigned char tmpbuf[CD_SECTSIZE] __aligned(ARCH_DMA_MINALIGN);
+
+unsigned long iso_dread(struct blk_desc *block_dev, lbaint_t start,
+ lbaint_t blkcnt, void *buffer)
+{
+ unsigned long ret;
+
+ if (block_dev->blksz == 512) {
+ /* Convert from 2048 to 512 sector size */
+ start *= 4;
+ blkcnt *= 4;
+ }
+
+ ret = blk_dread(block_dev, start, blkcnt, buffer);
+
+ if (block_dev->blksz == 512)
+ ret /= 4;
+
+ return ret;
+}
+
+/* only boot records will be listed as valid partitions */
+int part_get_info_iso_verb(struct blk_desc *dev_desc, int part_num,
+ struct disk_partition *info, int verb)
+{
+ int i,offset,entry_num;
+ unsigned short *chksumbuf;
+ unsigned short chksum;
+ unsigned long newblkaddr,blkaddr,lastsect,bootaddr;
+ iso_boot_rec_t *pbr = (iso_boot_rec_t *)tmpbuf; /* boot record */
+ iso_pri_rec_t *ppr = (iso_pri_rec_t *)tmpbuf; /* primary desc */
+ iso_val_entry_t *pve = (iso_val_entry_t *)tmpbuf;
+ iso_init_def_entry_t *pide;
+
+ if ((dev_desc->blksz != CD_SECTSIZE) && (dev_desc->blksz != 512))
+ return -1;
+
+ /* the first sector (sector 0x10) must be a primary volume desc */
+ blkaddr=PVD_OFFSET;
+ if (iso_dread(dev_desc, PVD_OFFSET, 1, (ulong *)tmpbuf) != 1)
+ return -1;
+ if(ppr->desctype!=0x01) {
+ if(verb)
+ printf ("** First descriptor is NOT a primary desc on %d:%d **\n",
+ dev_desc->devnum, part_num);
+ return (-1);
+ }
+ if(strncmp((char *)ppr->stand_ident,"CD001",5)!=0) {
+ if(verb)
+ printf ("** Wrong ISO Ident: %s on %d:%d **\n",
+ ppr->stand_ident, dev_desc->devnum, part_num);
+ return (-1);
+ }
+ lastsect = le32_to_cpu(ppr->firstsek_LEpathtab1_LE);
+ /* assuming same block size for all entries */
+ info->blksz = be16_to_cpu(ppr->secsize_BE);
+ PRINTF(" Lastsect:%08lx\n",lastsect);
+ for(i=blkaddr;i<lastsect;i++) {
+ PRINTF("Reading block %d\n", i);
+ if (iso_dread(dev_desc, i, 1, (ulong *)tmpbuf) != 1)
+ return -1;
+ if(ppr->desctype==0x00)
+ break; /* boot entry found */
+ if(ppr->desctype==0xff) {
+ if(verb)
+ printf ("** No valid boot catalog found on %d:%d **\n",
+ dev_desc->devnum, part_num);
+ return (-1);
+ }
+ }
+ /* boot entry found */
+ if(strncmp(pbr->ident_str,"EL TORITO SPECIFICATION",23)!=0) {
+ if(verb)
+ printf ("** Wrong El Torito ident: %s on %d:%d **\n",
+ pbr->ident_str, dev_desc->devnum, part_num);
+ return (-1);
+ }
+ bootaddr = get_unaligned_le32(pbr->pointer);
+ PRINTF(" Boot Entry at: %08lX\n",bootaddr);
+ if (iso_dread(dev_desc, bootaddr, 1, (ulong *)tmpbuf) != 1) {
+ if(verb)
+ printf ("** Can't read Boot Entry at %lX on %d:%d **\n",
+ bootaddr, dev_desc->devnum, part_num);
+ return (-1);
+ }
+ chksum=0;
+ chksumbuf = (unsigned short *)tmpbuf;
+ for(i=0;i<0x10;i++)
+ chksum += le16_to_cpu(chksumbuf[i]);
+ if(chksum!=0) {
+ if(verb)
+ printf("** Checksum Error in booting catalog validation entry on %d:%d **\n",
+ dev_desc->devnum, part_num);
+ return (-1);
+ }
+ if((pve->key[0]!=0x55)||(pve->key[1]!=0xAA)) {
+ if(verb)
+ printf ("** Key 0x55 0xAA error on %d:%d **\n",
+ dev_desc->devnum, part_num);
+ return(-1);
+ }
+#ifdef CHECK_FOR_POWERPC_PLATTFORM
+ if(pve->platform!=0x01) {
+ if(verb)
+ printf ("** No PowerPC platform CD on %d:%d **\n",
+ dev_desc->devnum, part_num);
+ return(-1);
+ }
+#endif
+ /* the validation entry seems to be ok, now search the "partition" */
+ entry_num=1;
+ offset=0x20;
+ strcpy((char *)info->type, "U-Boot");
+ part_set_generic_name(dev_desc, part_num, (char *)info->name);
+ /* the bootcatalog (including validation Entry) is limited to 2048Bytes
+ * (63 boot entries + validation entry) */
+ while(offset<2048) {
+ pide=(iso_init_def_entry_t *)&tmpbuf[offset];
+ if ((pide->boot_ind==0x88) ||
+ (pide->boot_ind==0x00)) { /* Header Id for default Sections Entries */
+ if(entry_num==part_num) { /* part found */
+ goto found;
+ }
+ entry_num++; /* count partitions Entries (boot and non bootables */
+ offset+=0x20;
+ continue;
+ }
+ if ((pide->boot_ind==0x90) || /* Section Header Entry */
+ (pide->boot_ind==0x91) || /* Section Header Entry (last) */
+ (pide->boot_ind==0x44)) { /* Extension Indicator */
+ offset+=0x20; /* skip unused entries */
+ }
+ else {
+ if(verb)
+ printf ("** Partition %d not found on device %d **\n",
+ part_num, dev_desc->devnum);
+ return(-1);
+ }
+ }
+ /* if we reach this point entire sector has been
+ * searched w/o succsess */
+ if(verb)
+ printf ("** Partition %d not found on device %d **\n",
+ part_num, dev_desc->devnum);
+ return(-1);
+found:
+ if(pide->boot_ind!=0x88) {
+ if(verb)
+ printf("** Partition %d is not bootable on device %d **\n",
+ part_num, dev_desc->devnum);
+ return (-1);
+ }
+ switch(pide->boot_media) {
+ case 0x00: /* no emulation */
+ info->size = get_unaligned_le16(pide->sec_cnt)>>2;
+ break;
+ case 0x01: info->size=2400>>2; break; /* 1.2MByte Floppy */
+ case 0x02: info->size=2880>>2; break; /* 1.44MByte Floppy */
+ case 0x03: info->size=5760>>2; break; /* 2.88MByte Floppy */
+ case 0x04: info->size=2880>>2; break; /* dummy (HD Emulation) */
+ default: info->size=0; break;
+ }
+ newblkaddr = get_unaligned_le32(pide->rel_block_addr);
+ info->start=newblkaddr;
+
+ if (dev_desc->blksz == 512) {
+ info->size *= 4;
+ info->start *= 4;
+ info->blksz = 512;
+ }
+
+ PRINTF(" part %d found @ %lx size %lx\n",part_num,info->start,info->size);
+ return 0;
+}
+
+static int part_get_info_iso(struct blk_desc *dev_desc, int part_num,
+ struct disk_partition *info)
+{
+ return part_get_info_iso_verb(dev_desc, part_num, info, 0);
+}
+
+static void part_print_iso(struct blk_desc *dev_desc)
+{
+ struct disk_partition info;
+ int i;
+
+ if (part_get_info_iso_verb(dev_desc, 1, &info, 0) == -1) {
+ printf("** No boot partition found on device %d **\n",
+ dev_desc->devnum);
+ return;
+ }
+ printf("Part Start Sect x Size Type\n");
+ i=1;
+ do {
+ printf(" %2d " LBAFU " " LBAFU " %6ld %.32s\n",
+ i, info.start, info.size, info.blksz, info.type);
+ i++;
+ } while (part_get_info_iso_verb(dev_desc, i, &info, 0) != -1);
+}
+
+static int part_test_iso(struct blk_desc *dev_desc)
+{
+ struct disk_partition info;
+
+ return part_get_info_iso_verb(dev_desc, 1, &info, 0);
+}
+
+U_BOOT_PART_TYPE(iso) = {
+ .name = "ISO",
+ .part_type = PART_TYPE_ISO,
+ .max_entries = ISO_ENTRY_NUMBERS,
+ .get_info = part_get_info_iso,
+ .print = part_print_iso,
+ .test = part_test_iso,
+};
+#endif