Date: Sun, 19 Jul 2020 06:59:09 +0000 (UTC) From: Toomas Soome <tsoome@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r363318 - head/stand/i386/loader Message-ID: <202007190659.06J6x9mA044576@repo.freebsd.org>
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Author: tsoome Date: Sun Jul 19 06:59:09 2020 New Revision: 363318 URL: https://svnweb.freebsd.org/changeset/base/363318 Log: loader: cstyle cleanup No functional changes intended. Sponsored by: Netflix, Klara Inc. Modified: head/stand/i386/loader/main.c Modified: head/stand/i386/loader/main.c ============================================================================== --- head/stand/i386/loader/main.c Sun Jul 19 03:02:46 2020 (r363317) +++ head/stand/i386/loader/main.c Sun Jul 19 06:59:09 2020 (r363318) @@ -95,163 +95,171 @@ ptov(uintptr_t x) int main(void) { - int i; + int i; - /* Pick up arguments */ - kargs = (void *)__args; - initial_howto = kargs->howto; - initial_bootdev = kargs->bootdev; - initial_bootinfo = kargs->bootinfo ? (struct bootinfo *)PTOV(kargs->bootinfo) : NULL; + /* Pick up arguments */ + kargs = (void *)__args; + initial_howto = kargs->howto; + initial_bootdev = kargs->bootdev; + initial_bootinfo = kargs->bootinfo ? + (struct bootinfo *)PTOV(kargs->bootinfo) : NULL; - /* Initialize the v86 register set to a known-good state. */ - bzero(&v86, sizeof(v86)); - v86.efl = PSL_RESERVED_DEFAULT | PSL_I; + /* Initialize the v86 register set to a known-good state. */ + bzero(&v86, sizeof(v86)); + v86.efl = PSL_RESERVED_DEFAULT | PSL_I; - /* - * Initialise the heap as early as possible. Once this is done, malloc() is usable. - */ - bios_getmem(); + /* + * Initialise the heap as early as possible. + * Once this is done, malloc() is usable. + */ + bios_getmem(); #if defined(LOADER_BZIP2_SUPPORT) || defined(LOADER_FIREWIRE_SUPPORT) || \ defined(LOADER_GPT_SUPPORT) || defined(LOADER_ZFS_SUPPORT) - if (high_heap_size > 0) { - heap_top = PTOV(high_heap_base + high_heap_size); - heap_bottom = PTOV(high_heap_base); - if (high_heap_base < memtop_copyin) - memtop_copyin = high_heap_base; - } else + if (high_heap_size > 0) { + heap_top = PTOV(high_heap_base + high_heap_size); + heap_bottom = PTOV(high_heap_base); + if (high_heap_base < memtop_copyin) + memtop_copyin = high_heap_base; + } else #endif - { - heap_top = (void *)PTOV(bios_basemem); - heap_bottom = (void *)end; - } - setheap(heap_bottom, heap_top); + { + heap_top = (void *)PTOV(bios_basemem); + heap_bottom = (void *)end; + } + setheap(heap_bottom, heap_top); - /* - * XXX Chicken-and-egg problem; we want to have console output early, but some - * console attributes may depend on reading from eg. the boot device, which we - * can't do yet. - * - * We can use printf() etc. once this is done. - * If the previous boot stage has requested a serial console, prefer that. - */ - bi_setboothowto(initial_howto); - if (initial_howto & RB_MULTIPLE) { - if (initial_howto & RB_SERIAL) - setenv("console", "comconsole vidconsole", 1); - else - setenv("console", "vidconsole comconsole", 1); - } else if (initial_howto & RB_SERIAL) - setenv("console", "comconsole", 1); - else if (initial_howto & RB_MUTE) - setenv("console", "nullconsole", 1); - cons_probe(); + /* + * XXX Chicken-and-egg problem; we want to have console output early, + * but some console attributes may depend on reading from eg. the boot + * device, which we can't do yet. + * + * We can use printf() etc. once this is done. + * If the previous boot stage has requested a serial console, + * prefer that. + */ + bi_setboothowto(initial_howto); + if (initial_howto & RB_MULTIPLE) { + if (initial_howto & RB_SERIAL) + setenv("console", "comconsole vidconsole", 1); + else + setenv("console", "vidconsole comconsole", 1); + } else if (initial_howto & RB_SERIAL) { + setenv("console", "comconsole", 1); + } else if (initial_howto & RB_MUTE) { + setenv("console", "nullconsole", 1); + } + cons_probe(); - /* - * Initialise the block cache. Set the upper limit. - */ - bcache_init(32768, 512); + /* + * Initialise the block cache. Set the upper limit. + */ + bcache_init(32768, 512); - /* - * Special handling for PXE and CD booting. - */ - if (kargs->bootinfo == 0) { /* - * We only want the PXE disk to try to init itself in the below - * walk through devsw if we actually booted off of PXE. + * Special handling for PXE and CD booting. */ - if (kargs->bootflags & KARGS_FLAGS_PXE) - pxe_enable(kargs->pxeinfo ? PTOV(kargs->pxeinfo) : NULL); - else if (kargs->bootflags & KARGS_FLAGS_CD) - bc_add(initial_bootdev); - } + if (kargs->bootinfo == 0) { + /* + * We only want the PXE disk to try to init itself in the below + * walk through devsw if we actually booted off of PXE. + */ + if (kargs->bootflags & KARGS_FLAGS_PXE) + pxe_enable(kargs->pxeinfo ? + PTOV(kargs->pxeinfo) : NULL); + else if (kargs->bootflags & KARGS_FLAGS_CD) + bc_add(initial_bootdev); + } - archsw.arch_autoload = i386_autoload; - archsw.arch_getdev = i386_getdev; - archsw.arch_copyin = i386_copyin; - archsw.arch_copyout = i386_copyout; - archsw.arch_readin = i386_readin; - archsw.arch_isainb = isa_inb; - archsw.arch_isaoutb = isa_outb; - archsw.arch_hypervisor = x86_hypervisor; + archsw.arch_autoload = i386_autoload; + archsw.arch_getdev = i386_getdev; + archsw.arch_copyin = i386_copyin; + archsw.arch_copyout = i386_copyout; + archsw.arch_readin = i386_readin; + archsw.arch_isainb = isa_inb; + archsw.arch_isaoutb = isa_outb; + archsw.arch_hypervisor = x86_hypervisor; #ifdef LOADER_ZFS_SUPPORT - archsw.arch_zfs_probe = i386_zfs_probe; + archsw.arch_zfs_probe = i386_zfs_probe; - /* - * zfsboot and gptzfsboot have always passed KARGS_FLAGS_ZFS, so if that is - * set along with KARGS_FLAGS_EXTARG we know we can interpret the extarg - * data as a struct zfs_boot_args. - */ + /* + * zfsboot and gptzfsboot have always passed KARGS_FLAGS_ZFS, + * so if that is set along with KARGS_FLAGS_EXTARG we know we + * can interpret the extarg data as a struct zfs_boot_args. + */ #define KARGS_EXTARGS_ZFS (KARGS_FLAGS_EXTARG | KARGS_FLAGS_ZFS) - if ((kargs->bootflags & KARGS_EXTARGS_ZFS) == KARGS_EXTARGS_ZFS) { - zargs = (struct zfs_boot_args *)(kargs + 1); - } + if ((kargs->bootflags & KARGS_EXTARGS_ZFS) == KARGS_EXTARGS_ZFS) { + zargs = (struct zfs_boot_args *)(kargs + 1); + } #endif /* LOADER_ZFS_SUPPORT */ #ifdef LOADER_GELI_SUPPORT - /* - * If we decided earlier that we have zfs_boot_args extarg data, and it is - * big enough to contain the embedded geli data (the early zfs_boot_args - * structs weren't), then init the gbdata pointer accordingly. If there is - * extarg data which isn't zfs_boot_args data, determine whether it is - * geli_boot_args data. Recent versions of gptboot set KARGS_FLAGS_GELI to - * indicate that. Earlier versions didn't, but we presume that's what we - * have if the extarg size exactly matches the size of the geli_boot_args - * struct during that pre-flag era. - */ + /* + * If we decided earlier that we have zfs_boot_args extarg data, + * and it is big enough to contain the embedded geli data + * (the early zfs_boot_args structs weren't), then init the gbdata + * pointer accordingly. If there is extarg data which isn't + * zfs_boot_args data, determine whether it is geli_boot_args data. + * Recent versions of gptboot set KARGS_FLAGS_GELI to indicate that. + * Earlier versions didn't, but we presume that's what we + * have if the extarg size exactly matches the size of the + * geli_boot_args struct during that pre-flag era. + */ #define LEGACY_GELI_ARGS_SIZE 260 /* This can never change */ #ifdef LOADER_ZFS_SUPPORT - if (zargs != NULL) { - if (zargs->size > offsetof(struct zfs_boot_args, gelidata)) { - gbdata = &zargs->gelidata; - } - } else + if (zargs != NULL) { + if (zargs->size > offsetof(struct zfs_boot_args, gelidata)) { + gbdata = &zargs->gelidata; + } + } else #endif /* LOADER_ZFS_SUPPORT */ - if ((kargs->bootflags & KARGS_FLAGS_EXTARG) != 0) { - gargs = (struct geli_boot_args *)(kargs + 1); - if ((kargs->bootflags & KARGS_FLAGS_GELI) || - gargs->size == LEGACY_GELI_ARGS_SIZE) { - gbdata = &gargs->gelidata; + if ((kargs->bootflags & KARGS_FLAGS_EXTARG) != 0) { + gargs = (struct geli_boot_args *)(kargs + 1); + if ((kargs->bootflags & KARGS_FLAGS_GELI) || + gargs->size == LEGACY_GELI_ARGS_SIZE) { + gbdata = &gargs->gelidata; + } } - } - if (gbdata != NULL) - import_geli_boot_data(gbdata); + if (gbdata != NULL) + import_geli_boot_data(gbdata); #endif /* LOADER_GELI_SUPPORT */ - /* - * March through the device switch probing for things. - */ - for (i = 0; devsw[i] != NULL; i++) - if (devsw[i]->dv_init != NULL) - (devsw[i]->dv_init)(); - printf("BIOS %dkB/%dkB available memory\n", bios_basemem / 1024, bios_extmem / 1024); - if (initial_bootinfo != NULL) { - initial_bootinfo->bi_basemem = bios_basemem / 1024; - initial_bootinfo->bi_extmem = bios_extmem / 1024; - } + /* + * March through the device switch probing for things. + */ + for (i = 0; devsw[i] != NULL; i++) + if (devsw[i]->dv_init != NULL) + (devsw[i]->dv_init)(); - /* detect ACPI for future reference */ - biosacpi_detect(); + printf("BIOS %dkB/%dkB available memory\n", bios_basemem / 1024, + bios_extmem / 1024); + if (initial_bootinfo != NULL) { + initial_bootinfo->bi_basemem = bios_basemem / 1024; + initial_bootinfo->bi_extmem = bios_extmem / 1024; + } - /* detect SMBIOS for future reference */ - smbios_detect(NULL); + /* detect ACPI for future reference */ + biosacpi_detect(); - /* detect PCI BIOS for future reference */ - biospci_detect(); + /* detect SMBIOS for future reference */ + smbios_detect(NULL); - printf("\n%s", bootprog_info); + /* detect PCI BIOS for future reference */ + biospci_detect(); - extract_currdev(); /* set $currdev and $loaddev */ + printf("\n%s", bootprog_info); + + extract_currdev(); /* set $currdev and $loaddev */ - bios_getsmap(); + bios_getsmap(); - interact(); + interact(); - /* if we ever get here, it is an error */ - return (1); + /* if we ever get here, it is an error */ + return (1); } /* @@ -263,92 +271,105 @@ main(void) static void extract_currdev(void) { - struct i386_devdesc new_currdev; + struct i386_devdesc new_currdev; #ifdef LOADER_ZFS_SUPPORT - char buf[20]; + char buf[20]; #endif - int biosdev = -1; + int biosdev = -1; - /* Assume we are booting from a BIOS disk by default */ - new_currdev.dd.d_dev = &bioshd; + /* Assume we are booting from a BIOS disk by default */ + new_currdev.dd.d_dev = &bioshd; - /* new-style boot loaders such as pxeldr and cdldr */ - if (kargs->bootinfo == 0) { - if ((kargs->bootflags & KARGS_FLAGS_CD) != 0) { - /* we are booting from a CD with cdboot */ - new_currdev.dd.d_dev = &bioscd; - new_currdev.dd.d_unit = bd_bios2unit(initial_bootdev); - } else if ((kargs->bootflags & KARGS_FLAGS_PXE) != 0) { - /* we are booting from pxeldr */ - new_currdev.dd.d_dev = &pxedisk; - new_currdev.dd.d_unit = 0; - } else { - /* we don't know what our boot device is */ - new_currdev.d_kind.biosdisk.slice = -1; - new_currdev.d_kind.biosdisk.partition = 0; - biosdev = -1; - } + /* new-style boot loaders such as pxeldr and cdldr */ + if (kargs->bootinfo == 0) { + if ((kargs->bootflags & KARGS_FLAGS_CD) != 0) { + /* we are booting from a CD with cdboot */ + new_currdev.dd.d_dev = &bioscd; + new_currdev.dd.d_unit = bd_bios2unit(initial_bootdev); + } else if ((kargs->bootflags & KARGS_FLAGS_PXE) != 0) { + /* we are booting from pxeldr */ + new_currdev.dd.d_dev = &pxedisk; + new_currdev.dd.d_unit = 0; + } else { + /* we don't know what our boot device is */ + new_currdev.d_kind.biosdisk.slice = -1; + new_currdev.d_kind.biosdisk.partition = 0; + biosdev = -1; + } #ifdef LOADER_ZFS_SUPPORT - } else if ((kargs->bootflags & KARGS_FLAGS_ZFS) != 0) { - /* zargs was set in main() if we have new style extended argument */ - if (zargs != NULL && - zargs->size >= offsetof(struct zfs_boot_args, primary_pool)) { - /* sufficient data is provided */ - new_currdev.d_kind.zfs.pool_guid = zargs->pool; - new_currdev.d_kind.zfs.root_guid = zargs->root; - if (zargs->size >= sizeof(*zargs) && zargs->primary_vdev != 0) { - sprintf(buf, "%llu", zargs->primary_pool); - setenv("vfs.zfs.boot.primary_pool", buf, 1); - sprintf(buf, "%llu", zargs->primary_vdev); - setenv("vfs.zfs.boot.primary_vdev", buf, 1); - } + } else if ((kargs->bootflags & KARGS_FLAGS_ZFS) != 0) { + /* + * zargs was set in main() if we have new style extended + * argument + */ + if (zargs != NULL && + zargs->size >= + offsetof(struct zfs_boot_args, primary_pool)) { + /* sufficient data is provided */ + new_currdev.d_kind.zfs.pool_guid = zargs->pool; + new_currdev.d_kind.zfs.root_guid = zargs->root; + if (zargs->size >= sizeof(*zargs) && + zargs->primary_vdev != 0) { + sprintf(buf, "%llu", zargs->primary_pool); + setenv("vfs.zfs.boot.primary_pool", buf, 1); + sprintf(buf, "%llu", zargs->primary_vdev); + setenv("vfs.zfs.boot.primary_vdev", buf, 1); + } + } else { + /* old style zfsboot block */ + new_currdev.d_kind.zfs.pool_guid = kargs->zfspool; + new_currdev.d_kind.zfs.root_guid = 0; + } + new_currdev.dd.d_dev = &zfs_dev; +#endif + } else if ((initial_bootdev & B_MAGICMASK) != B_DEVMAGIC) { + /* The passed-in boot device is bad */ + new_currdev.d_kind.biosdisk.slice = -1; + new_currdev.d_kind.biosdisk.partition = 0; + biosdev = -1; } else { - /* old style zfsboot block */ - new_currdev.d_kind.zfs.pool_guid = kargs->zfspool; - new_currdev.d_kind.zfs.root_guid = 0; + new_currdev.d_kind.biosdisk.slice = + B_SLICE(initial_bootdev) - 1; + new_currdev.d_kind.biosdisk.partition = + B_PARTITION(initial_bootdev); + biosdev = initial_bootinfo->bi_bios_dev; + + /* + * If we are booted by an old bootstrap, we have to guess at + * the BIOS unit number. We will lose if there is more than + * one disk type and we are not booting from the + * lowest-numbered disk type (ie. SCSI when IDE also exists). + */ + if ((biosdev == 0) && (B_TYPE(initial_bootdev) != 2)) { + /* + * biosdev doesn't match major, assume harddisk + */ + biosdev = 0x80 + B_UNIT(initial_bootdev); + } } - new_currdev.dd.d_dev = &zfs_dev; -#endif - } else if ((initial_bootdev & B_MAGICMASK) != B_DEVMAGIC) { - /* The passed-in boot device is bad */ - new_currdev.d_kind.biosdisk.slice = -1; - new_currdev.d_kind.biosdisk.partition = 0; - biosdev = -1; - } else { - new_currdev.d_kind.biosdisk.slice = B_SLICE(initial_bootdev) - 1; - new_currdev.d_kind.biosdisk.partition = B_PARTITION(initial_bootdev); - biosdev = initial_bootinfo->bi_bios_dev; /* - * If we are booted by an old bootstrap, we have to guess at the BIOS - * unit number. We will lose if there is more than one disk type - * and we are not booting from the lowest-numbered disk type - * (ie. SCSI when IDE also exists). + * If we are booting off of a BIOS disk and we didn't succeed + * in determining which one we booted off of, just use disk0: + * as a reasonable default. */ - if ((biosdev == 0) && (B_TYPE(initial_bootdev) != 2)) /* biosdev doesn't match major */ - biosdev = 0x80 + B_UNIT(initial_bootdev); /* assume harddisk */ - } + if ((new_currdev.dd.d_dev->dv_type == bioshd.dv_type) && + ((new_currdev.dd.d_unit = bd_bios2unit(biosdev)) == -1)) { + printf("Can't work out which disk we are booting " + "from.\nGuessed BIOS device 0x%x not found by " + "probes, defaulting to disk0:\n", biosdev); + new_currdev.dd.d_unit = 0; + } - /* - * If we are booting off of a BIOS disk and we didn't succeed in determining - * which one we booted off of, just use disk0: as a reasonable default. - */ - if ((new_currdev.dd.d_dev->dv_type == bioshd.dv_type) && - ((new_currdev.dd.d_unit = bd_bios2unit(biosdev)) == -1)) { - printf("Can't work out which disk we are booting from.\n" - "Guessed BIOS device 0x%x not found by probes, defaulting to disk0:\n", biosdev); - new_currdev.dd.d_unit = 0; - } - #ifdef LOADER_ZFS_SUPPORT - if (new_currdev.dd.d_dev->dv_type == DEVT_ZFS) - init_zfs_bootenv(zfs_fmtdev(&new_currdev)); + if (new_currdev.dd.d_dev->dv_type == DEVT_ZFS) + init_zfs_bootenv(zfs_fmtdev(&new_currdev)); #endif - env_setenv("currdev", EV_VOLATILE, i386_fmtdev(&new_currdev), - i386_setcurrdev, env_nounset); - env_setenv("loaddev", EV_VOLATILE, i386_fmtdev(&new_currdev), env_noset, - env_nounset); + env_setenv("currdev", EV_VOLATILE, i386_fmtdev(&new_currdev), + i386_setcurrdev, env_nounset); + env_setenv("loaddev", EV_VOLATILE, i386_fmtdev(&new_currdev), + env_noset, env_nounset); } COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot); @@ -356,22 +377,22 @@ COMMAND_SET(reboot, "reboot", "reboot the system", com static int command_reboot(int argc, char *argv[]) { - int i; + int i; - for (i = 0; devsw[i] != NULL; ++i) - if (devsw[i]->dv_cleanup != NULL) - (devsw[i]->dv_cleanup)(); + for (i = 0; devsw[i] != NULL; ++i) + if (devsw[i]->dv_cleanup != NULL) + (devsw[i]->dv_cleanup)(); - printf("Rebooting...\n"); - delay(1000000); - __exit(0); + printf("Rebooting...\n"); + delay(1000000); + __exit(0); } /* provide this for panic, as it's not in the startup code */ void exit(int code) { - __exit(code); + __exit(code); } COMMAND_SET(heap, "heap", "show heap usage", command_heap); @@ -379,10 +400,10 @@ COMMAND_SET(heap, "heap", "show heap usage", command_h static int command_heap(int argc, char *argv[]) { - mallocstats(); - printf("heap base at %p, top at %p, upper limit at %p\n", heap_bottom, - sbrk(0), heap_top); - return(CMD_OK); + mallocstats(); + printf("heap base at %p, top at %p, upper limit at %p\n", heap_bottom, + sbrk(0), heap_top); + return (CMD_OK); } /* ISA bus access functions for PnP. */ @@ -390,32 +411,32 @@ static int isa_inb(int port) { - return (inb(port)); + return (inb(port)); } static void isa_outb(int port, int value) { - outb(port, value); + outb(port, value); } #ifdef LOADER_ZFS_SUPPORT static void i386_zfs_probe(void) { - char devname[32]; - struct i386_devdesc dev; + char devname[32]; + struct i386_devdesc dev; - /* - * Open all the disks we can find and see if we can reconstruct - * ZFS pools from them. - */ - dev.dd.d_dev = &bioshd; - for (dev.dd.d_unit = 0; bd_unit2bios(&dev) >= 0; dev.dd.d_unit++) { - snprintf(devname, sizeof(devname), "%s%d:", bioshd.dv_name, - dev.dd.d_unit); - zfs_probe_dev(devname, NULL); - } + /* + * Open all the disks we can find and see if we can reconstruct + * ZFS pools from them. + */ + dev.dd.d_dev = &bioshd; + for (dev.dd.d_unit = 0; bd_unit2bios(&dev) >= 0; dev.dd.d_unit++) { + snprintf(devname, sizeof(devname), "%s%d:", bioshd.dv_name, + dev.dd.d_unit); + zfs_probe_dev(devname, NULL); + } } #endif
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