X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=disk%2Fpart.c;h=43485c9148b0f404e91cb0f45f9a3c76b2267578;hb=5735540fd97f0d3167e34f4280f375126aedccd1;hp=f0afd89553345b974c828bde34425da61c9ee9ef;hpb=99d2c205d4a151faf5f9a406316b9dd960f43475;p=oweals%2Fu-boot.git diff --git a/disk/part.c b/disk/part.c index f0afd89553..43485c9148 100644 --- a/disk/part.c +++ b/disk/part.c @@ -2,28 +2,13 @@ * (C) Copyright 2001 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA + * SPDX-License-Identifier: GPL-2.0+ */ #include #include #include +#include #include #undef PART_DEBUG @@ -34,16 +19,10 @@ #define PRINTF(fmt,args...) #endif -#if (defined(CONFIG_CMD_IDE) || \ - defined(CONFIG_CMD_SATA) || \ - defined(CONFIG_CMD_SCSI) || \ - defined(CONFIG_CMD_USB) || \ - defined(CONFIG_MMC) || \ - defined(CONFIG_SYSTEMACE) ) - struct block_drvr { char *name; block_dev_desc_t* (*get_dev)(int dev); + int (*select_hwpart)(int dev_num, int hwpart); }; static const struct block_drvr block_drvr[] = { @@ -60,21 +39,31 @@ static const struct block_drvr block_drvr[] = { { .name = "usb", .get_dev = usb_stor_get_dev, }, #endif #if defined(CONFIG_MMC) - { .name = "mmc", .get_dev = mmc_get_dev, }, + { + .name = "mmc", + .get_dev = mmc_get_dev, + .select_hwpart = mmc_select_hwpart, + }, #endif #if defined(CONFIG_SYSTEMACE) { .name = "ace", .get_dev = systemace_get_dev, }, +#endif +#if defined(CONFIG_SANDBOX) + { .name = "host", .get_dev = host_get_dev, }, #endif { }, }; DECLARE_GLOBAL_DATA_PTR; -block_dev_desc_t *get_dev(const char *ifname, int dev) +#ifdef HAVE_BLOCK_DEVICE +static block_dev_desc_t *get_dev_hwpart(const char *ifname, int dev, int hwpart) { const struct block_drvr *drvr = block_drvr; block_dev_desc_t* (*reloc_get_dev)(int dev); + int (*select_hwpart)(int dev_num, int hwpart); char *name; + int ret; if (!ifname) return NULL; @@ -86,29 +75,48 @@ block_dev_desc_t *get_dev(const char *ifname, int dev) while (drvr->name) { name = drvr->name; reloc_get_dev = drvr->get_dev; + select_hwpart = drvr->select_hwpart; #ifdef CONFIG_NEEDS_MANUAL_RELOC name += gd->reloc_off; reloc_get_dev += gd->reloc_off; -#endif - if (strncmp(ifname, name, strlen(name)) == 0) - return reloc_get_dev(dev); + if (select_hwpart) + select_hwpart += gd->reloc_off; +#endif + if (strncmp(ifname, name, strlen(name)) == 0) { + block_dev_desc_t *dev_desc = reloc_get_dev(dev); + if (!dev_desc) + return NULL; + if (hwpart == 0 && !select_hwpart) + return dev_desc; + if (!select_hwpart) + return NULL; + ret = select_hwpart(dev_desc->dev, hwpart); + if (ret < 0) + return NULL; + return dev_desc; + } drvr++; } return NULL; } + +block_dev_desc_t *get_dev(const char *ifname, int dev) +{ + return get_dev_hwpart(ifname, dev, 0); +} #else +block_dev_desc_t *get_dev_hwpart(const char *ifname, int dev, int hwpart) +{ + return NULL; +} + block_dev_desc_t *get_dev(const char *ifname, int dev) { return NULL; } #endif -#if (defined(CONFIG_CMD_IDE) || \ - defined(CONFIG_CMD_SATA) || \ - defined(CONFIG_CMD_SCSI) || \ - defined(CONFIG_CMD_USB) || \ - defined(CONFIG_MMC) || \ - defined(CONFIG_SYSTEMACE) ) +#ifdef HAVE_BLOCK_DEVICE /* ------------------------------------------------------------------------- */ /* @@ -125,7 +133,7 @@ typedef lbaint_t lba512_t; * Overflowless variant of (block_count * mul_by / div_by) * when div_by > mul_by */ -static lba512_t lba512_muldiv (lba512_t block_count, lba512_t mul_by, lba512_t div_by) +static lba512_t lba512_muldiv(lba512_t block_count, lba512_t mul_by, lba512_t div_by) { lba512_t bc_quot, bc_rem; @@ -199,7 +207,7 @@ void dev_print (block_dev_desc_t *dev_desc) break; } puts ("\n"); - if ((dev_desc->lba * dev_desc->blksz)>0L) { + if (dev_desc->lba > 0L && dev_desc->blksz > 0L) { ulong mb, mb_quot, mb_rem, gb, gb_quot, gb_rem; lbaint_t lba; @@ -207,7 +215,8 @@ void dev_print (block_dev_desc_t *dev_desc) lba512 = (lba * (dev_desc->blksz/512)); /* round to 1 digit */ - mb = lba512_muldiv(lba512, 10, 2048); /* 2048 = (1024 * 1024) / 512 MB */ + /* 2048 = (1024 * 1024) / 512 MB */ + mb = lba512_muldiv(lba512, 10, 2048); mb_quot = mb / 10; mb_rem = mb - (10 * mb_quot); @@ -238,20 +247,9 @@ void dev_print (block_dev_desc_t *dev_desc) } #endif -#if (defined(CONFIG_CMD_IDE) || \ - defined(CONFIG_CMD_SATA) || \ - defined(CONFIG_CMD_SCSI) || \ - defined(CONFIG_CMD_USB) || \ - defined(CONFIG_MMC) || \ - defined(CONFIG_SYSTEMACE) ) +#ifdef HAVE_BLOCK_DEVICE -#if defined(CONFIG_MAC_PARTITION) || \ - defined(CONFIG_DOS_PARTITION) || \ - defined(CONFIG_ISO_PARTITION) || \ - defined(CONFIG_AMIGA_PARTITION) || \ - defined(CONFIG_EFI_PARTITION) - -void init_part (block_dev_desc_t * dev_desc) +void init_part(block_dev_desc_t *dev_desc) { #ifdef CONFIG_ISO_PARTITION if (test_part_iso(dev_desc) == 0) { @@ -292,7 +290,13 @@ void init_part (block_dev_desc_t * dev_desc) } -static void print_part_header (const char *type, block_dev_desc_t * dev_desc) +#if defined(CONFIG_MAC_PARTITION) || \ + defined(CONFIG_DOS_PARTITION) || \ + defined(CONFIG_ISO_PARTITION) || \ + defined(CONFIG_AMIGA_PARTITION) || \ + defined(CONFIG_EFI_PARTITION) + +static void print_part_header(const char *type, block_dev_desc_t *dev_desc) { puts ("\nPartition Map for "); switch (dev_desc->if_type) { @@ -317,6 +321,9 @@ static void print_part_header (const char *type, block_dev_desc_t * dev_desc) case IF_TYPE_MMC: puts ("MMC"); break; + case IF_TYPE_HOST: + puts("HOST"); + break; default: puts ("UNKNOWN"); break; @@ -325,7 +332,9 @@ static void print_part_header (const char *type, block_dev_desc_t * dev_desc) dev_desc->dev, type); } -void print_part (block_dev_desc_t * dev_desc) +#endif /* any CONFIG_..._PARTITION */ + +void print_part(block_dev_desc_t * dev_desc) { switch (dev_desc->part_type) { @@ -371,25 +380,18 @@ void print_part (block_dev_desc_t * dev_desc) puts ("## Unknown partition table\n"); } +#endif /* HAVE_BLOCK_DEVICE */ -#else /* neither MAC nor DOS nor ISO nor AMIGA nor EFI partition configured */ -# error neither CONFIG_MAC_PARTITION nor CONFIG_DOS_PARTITION -# error nor CONFIG_ISO_PARTITION nor CONFIG_AMIGA_PARTITION -# error nor CONFIG_EFI_PARTITION configured! -#endif +int get_partition_info(block_dev_desc_t *dev_desc, int part, + disk_partition_t *info) +{ +#ifdef HAVE_BLOCK_DEVICE +#ifdef CONFIG_PARTITION_UUIDS + /* The common case is no UUID support */ + info->uuid[0] = 0; #endif -int get_partition_info(block_dev_desc_t *dev_desc, int part - , disk_partition_t *info) -{ -#if defined(CONFIG_CMD_IDE) || \ - defined(CONFIG_CMD_SATA) || \ - defined(CONFIG_CMD_SCSI) || \ - defined(CONFIG_CMD_USB) || \ - defined(CONFIG_MMC) || \ - defined(CONFIG_SYSTEMACE) - switch (dev_desc->part_type) { #ifdef CONFIG_MAC_PARTITION case PART_TYPE_MAC: @@ -438,71 +440,256 @@ int get_partition_info(block_dev_desc_t *dev_desc, int part default: break; } -#endif +#endif /* HAVE_BLOCK_DEVICE */ return -1; } -int get_device_and_partition(const char *ifname, const char *dev_str, - block_dev_desc_t **dev_desc, - disk_partition_t *info) +int get_device(const char *ifname, const char *dev_hwpart_str, + block_dev_desc_t **dev_desc) { - int ret; char *ep; - int dev; - block_dev_desc_t *desc; - int part = 0; - char *part_str; - - if (dev_str) - dev = simple_strtoul(dev_str, &ep, 16); - - if (!dev_str || (dev_str == ep)) { - dev_str = getenv("bootdevice"); - if (dev_str) - dev = simple_strtoul(dev_str, &ep, 16); - if (!dev_str || (dev_str == ep)) - goto err; + char *dup_str = NULL; + const char *dev_str, *hwpart_str; + int dev, hwpart; + + hwpart_str = strchr(dev_hwpart_str, '.'); + if (hwpart_str) { + dup_str = strdup(dev_hwpart_str); + dup_str[hwpart_str - dev_hwpart_str] = 0; + dev_str = dup_str; + hwpart_str++; + } else { + dev_str = dev_hwpart_str; + hwpart = 0; } - desc = get_dev(ifname, dev); - if (!desc || (desc->type == DEV_TYPE_UNKNOWN)) - goto err; + dev = simple_strtoul(dev_str, &ep, 16); + if (*ep) { + printf("** Bad device specification %s %s **\n", + ifname, dev_str); + dev = -1; + goto cleanup; + } - if (desc->part_type == PART_TYPE_UNKNOWN) { - /* disk doesn't use partition table */ - if (!desc->lba) { - printf("**Bad disk size - %s %d:0 **\n", ifname, dev); - return -1; + if (hwpart_str) { + hwpart = simple_strtoul(hwpart_str, &ep, 16); + if (*ep) { + printf("** Bad HW partition specification %s %s **\n", + ifname, hwpart_str); + dev = -1; + goto cleanup; } + } + + *dev_desc = get_dev_hwpart(ifname, dev, hwpart); + if (!(*dev_desc) || ((*dev_desc)->type == DEV_TYPE_UNKNOWN)) { + printf("** Bad device %s %s **\n", ifname, dev_hwpart_str); + dev = -1; + goto cleanup; + } + +cleanup: + free(dup_str); + return dev; +} + +#define PART_UNSPECIFIED -2 +#define PART_AUTO -1 +#define MAX_SEARCH_PARTITIONS 16 +int get_device_and_partition(const char *ifname, const char *dev_part_str, + block_dev_desc_t **dev_desc, + disk_partition_t *info, int allow_whole_dev) +{ + int ret = -1; + const char *part_str; + char *dup_str = NULL; + const char *dev_str; + int dev; + char *ep; + int p; + int part; + disk_partition_t tmpinfo; + + /* + * Special-case a pseudo block device "hostfs", to allow access to the + * host's own filesystem. + */ + if (0 == strcmp(ifname, "hostfs")) { + *dev_desc = NULL; info->start = 0; - info->size = desc->lba; - info->blksz = desc->blksz; + info->size = 0; + info->blksz = 0; + info->bootable = 0; + strcpy((char *)info->type, BOOT_PART_TYPE); + strcpy((char *)info->name, "Sandbox host"); +#ifdef CONFIG_PARTITION_UUIDS + info->uuid[0] = 0; +#endif - *dev_desc = desc; return 0; } - part_str = strchr(dev_str, ':'); - if (part_str) - part = (int)simple_strtoul(++part_str, NULL, 16); + /* If no dev_part_str, use bootdevice environment variable */ + if (!dev_part_str || !strlen(dev_part_str) || + !strcmp(dev_part_str, "-")) + dev_part_str = getenv("bootdevice"); - ret = get_partition_info(desc, part, info); - if (ret) { - printf("** Invalid partition %d, use `dev[:part]' **\n", part); - return -1; + /* If still no dev_part_str, it's an error */ + if (!dev_part_str) { + printf("** No device specified **\n"); + goto cleanup; + } + + /* Separate device and partition ID specification */ + part_str = strchr(dev_part_str, ':'); + if (part_str) { + dup_str = strdup(dev_part_str); + dup_str[part_str - dev_part_str] = 0; + dev_str = dup_str; + part_str++; + } else { + dev_str = dev_part_str; + } + + /* Look up the device */ + dev = get_device(ifname, dev_str, dev_desc); + if (dev < 0) + goto cleanup; + + /* Convert partition ID string to number */ + if (!part_str || !*part_str) { + part = PART_UNSPECIFIED; + } else if (!strcmp(part_str, "auto")) { + part = PART_AUTO; + } else { + /* Something specified -> use exactly that */ + part = (int)simple_strtoul(part_str, &ep, 16); + /* + * Less than whole string converted, + * or request for whole device, but caller requires partition. + */ + if (*ep || (part == 0 && !allow_whole_dev)) { + printf("** Bad partition specification %s %s **\n", + ifname, dev_part_str); + goto cleanup; + } + } + + /* + * No partition table on device, + * or user requested partition 0 (entire device). + */ + if (((*dev_desc)->part_type == PART_TYPE_UNKNOWN) || + (part == 0)) { + if (!(*dev_desc)->lba) { + printf("** Bad device size - %s %s **\n", ifname, + dev_str); + goto cleanup; + } + + /* + * If user specified a partition ID other than 0, + * or the calling command only accepts partitions, + * it's an error. + */ + if ((part > 0) || (!allow_whole_dev)) { + printf("** No partition table - %s %s **\n", ifname, + dev_str); + goto cleanup; + } + + (*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz); + + info->start = 0; + info->size = (*dev_desc)->lba; + info->blksz = (*dev_desc)->blksz; + info->bootable = 0; + strcpy((char *)info->type, BOOT_PART_TYPE); + strcpy((char *)info->name, "Whole Disk"); +#ifdef CONFIG_PARTITION_UUIDS + info->uuid[0] = 0; +#endif + + ret = 0; + goto cleanup; + } + + /* + * Now there's known to be a partition table, + * not specifying a partition means to pick partition 1. + */ + if (part == PART_UNSPECIFIED) + part = 1; + + /* + * If user didn't specify a partition number, or did specify something + * other than "auto", use that partition number directly. + */ + if (part != PART_AUTO) { + ret = get_partition_info(*dev_desc, part, info); + if (ret) { + printf("** Invalid partition %d **\n", part); + goto cleanup; + } + } else { + /* + * Find the first bootable partition. + * If none are bootable, fall back to the first valid partition. + */ + part = 0; + for (p = 1; p <= MAX_SEARCH_PARTITIONS; p++) { + ret = get_partition_info(*dev_desc, p, info); + if (ret) + continue; + + /* + * First valid partition, or new better partition? + * If so, save partition ID. + */ + if (!part || info->bootable) + part = p; + + /* Best possible partition? Stop searching. */ + if (info->bootable) + break; + + /* + * We now need to search further for best possible. + * If we what we just queried was the best so far, + * save the info since we over-write it next loop. + */ + if (part == p) + tmpinfo = *info; + } + /* If we found any acceptable partition */ + if (part) { + /* + * If we searched all possible partition IDs, + * return the first valid partition we found. + */ + if (p == MAX_SEARCH_PARTITIONS + 1) + *info = tmpinfo; + } else { + printf("** No valid partitions found **\n"); + ret = -1; + goto cleanup; + } } if (strncmp((char *)info->type, BOOT_PART_TYPE, sizeof(info->type)) != 0) { printf("** Invalid partition type \"%.32s\"" " (expect \"" BOOT_PART_TYPE "\")\n", info->type); - return -1; + ret = -1; + goto cleanup; } - *dev_desc = desc; - return part; + (*dev_desc)->log2blksz = LOG2((*dev_desc)->blksz); -err: - puts("** Invalid boot device, use `dev[:part]' **\n"); - return -1; + ret = part; + goto cleanup; + +cleanup: + free(dup_str); + return ret; }