a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * GRUB -- GRand Unified Bootloader
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * Copyright (c) 2013 Joyent, Inc. All rights reserved.
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * This program is free software; you can redistribute it and/or modify
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * it under the terms of the GNU General Public License as published by
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * the Free Software Foundation; either version 2 of the License, or
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * (at your option) any later version.
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * This program is distributed in the hope that it will be useful,
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * but WITHOUT ANY WARRANTY; without even the implied warranty of
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * GNU General Public License for more details.
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * You should have received a copy of the GNU General Public License
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * along with this program; if not, write to the Free Software
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski char v_value[220]; /* 256 - EV_NAMELEN - sizeof (fields) */
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowskiset_variable(const char *name, const char *value)
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski unsigned int i;
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski if (strlen(name) >= sizeof (expvars[0].v_name))
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski if (value != NULL && strlen(value) >= sizeof (expvars[0].v_value))
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski for (i = 0; i < nexpvars; i++) {
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski if (grub_strcmp(expvars[i].v_name, name) == 0)
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski } else if (i < avail) {
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski (void) grub_strcpy(expvars[i].v_name, name);
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski (void) grub_strcpy(expvars[i].v_value, value);
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski unsigned int i;
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski for (i = 0; i < nexpvars; i++) {
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski if (grub_strcmp(expvars[i].v_name, name) == 0) {
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * This function returns 16 bits. The upper 8 are the value of %ah
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * after calling int 15/ec00. The lower 8 bits are zero if the BIOS
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * call left CF clear, nonzero otherwise.
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("[BIOS 'Detect Target Operating Mode' "
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski "callback unsupported on this platform]\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("[BIOS accepted mixed-mode target setting!]\n");
7232236b5511ebe9b3343a5e1ab57a898e709218Andriy Gapon return (1); /* told the bios what we're up to */
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("fatal: BIOS reports this machine CANNOT run in "
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski "mixed 32/64-bit mode!\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("warning: BIOS Detect Target Operating Mode callback "
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski "confused.\n %%ax >> 8 = 0x%x, carry = %d\n", ah, ret);
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski struct amd64_cpuid_regs __vcr, *vcr = &__vcr;
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski uint32_t stdfeatures = 0, xtdfeatures = 0;
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * This check may seem silly, but if the C preprocesor symbol __amd64
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * is #defined during compilation, something that may outwardly seem
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * like a good idea, uts/common/sys/isa_defs.h will #define _LP64,
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * which will cause uts/common/sys/int_types.h to typedef uint64_t as
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * an unsigned long - which is only 4 bytes in size when using a 32-bit
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * If that happens, all the page table translation routines will fail
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * horribly, so check the size of uint64_t just to insure some degree
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * of sanity in future operations.
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski /*LINTED [sizeof result is invarient]*/
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski prom_panic("grub compiled improperly, unable to boot "
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski "64-bit AMD64 executables");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * If the CPU doesn't support the CPUID instruction, it's definitely
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * not an AMD64.
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski /*LINTED [vendor string from cpuid data]*/
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("cpu: warning, maxeax was 0x%x -> 0x%x\n",
7232236b5511ebe9b3343a5e1ab57a898e709218Andriy Gapon return (0); /* no additional functions, not an AMD64 */
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * All AMD64/IA32e processors technically SHOULD report
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * themselves as being in family 0xf, but for some reason
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * Simics doesn't, and this may change in the future, so
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * don't error out if it's not true.
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski if ((family = BITX(vcr->r_eax, 11, 8)) == 0xf)
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski if ((model = BITX(vcr->r_eax, 7, 4)) == 0xf)
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("cpu: '%s' family %d model %d step %d\n",
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: warning, xmaxeax was "
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: CPU does NOT support long mode\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: CPU does NOT support FPU\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: CPU does NOT support TSC\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: CPU does NOT support MSRs\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: CPU does NOT support PAE\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: CPU does NOT support CX8\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: CPU does NOT support PGE\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: CPU does NOT support CLFSH\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: CPU does NOT support MMX\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: CPU does NOT support FXSR\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: CPU does NOT support SSE\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: CPU does NOT support SSE2\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: CPU does not support amd64 executables.\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: EFER_SCE (syscall/sysret) already "
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: EFER_NXE (no-exec prot) already enabled\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski grub_printf("amd64: EFER_LME (long mode) already enabled\n");
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski if ((mbi.mem_upper / 10240) * 11 >= min_mem64)
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * Given the nul-terminated input string s, expand all variable references
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * within that string into the buffer pointed to by d, which must be of length
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * not less than len bytes.
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * We also expand the special case tokens "$ISADIR" and "$ZFS-BOOTFS" here.
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * If the string will not fit, returns ERR_WONT_FIT.
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * If a nonexistent variable is referenced, returns ERR_NOVAR.
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * Otherwise, returns 0. The resulting string is nul-terminated. On error,
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * the contents of the destination buffer are undefined.
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowskiexpand_string(const char *s, char *d, unsigned int len)
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski unsigned int i;
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski const char *p;
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski for (p = s, q = d; *p != '\0' && q < d + len; ) {
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski /* Special case: $ISADIR */
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski if (grub_strncmp(p, "$ISADIR", 7) == 0) {
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski /* Special case: $ZFS-BOOTFS */
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski if (grub_strncmp(p, "$ZFS-BOOTFS", 11) == 0 &&
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski /* zfs-bootfs=%s/%u */
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski vlen = (current_bootfs_obj > 0) ? 10 : 0;
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski /* ,bootpath=\"%s\" */
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski /* ,diskdevid=\"%s\" */
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski q += grub_sprintf(q, ",diskdevid=\"%s\"",
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski for (p = start; *p != '\0' && *p != '}' &&
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski * Unterminated reference. Copy verbatim.
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski if (p - start >= sizeof (name) - 1 || *p != '}') {
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski if ((vlen = grub_strlen(val)) >= q + len - d)
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski unsigned int i;
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski for (i = 0; i < nexpvars; i++) {
a5602e1bdcf9570fa24684b54cf57a3f22e05ae1Keith M Wesolowski (void) grub_printf("[%u] '%s' => '%s'\n", i, expvars[i].v_name,