diff options
Diffstat (limited to 'sys/boot/ia64/ski/elf_freebsd.c')
| -rw-r--r-- | sys/boot/ia64/ski/elf_freebsd.c | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/sys/boot/ia64/ski/elf_freebsd.c b/sys/boot/ia64/ski/elf_freebsd.c new file mode 100644 index 0000000..336048e --- /dev/null +++ b/sys/boot/ia64/ski/elf_freebsd.c @@ -0,0 +1,240 @@ +/* $FreeBSD$ */ +/* $NetBSD: loadfile.c,v 1.10 1998/06/25 06:45:46 ross Exp $ */ + +/*- + * Copyright (c) 1997 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, + * NASA Ames Research Center. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * Copyright (c) 1992, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Ralph Campbell. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)boot.c 8.1 (Berkeley) 6/10/93 + */ + +#include <stand.h> +#include <string.h> + +#include <sys/param.h> +#include <sys/linker.h> +#include <machine/elf.h> +#include <machine/bootinfo.h> + +#include "bootstrap.h" +#include "libski.h" + +#define _KERNEL + +static int elf_exec(struct preloaded_file *amp); +int bi_load(struct bootinfo *, struct preloaded_file *); + +struct file_format ia64_elf = { elf_loadfile, elf_exec }; + +#define PTE_MA_WB 0 +#define PTE_MA_UC 4 +#define PTE_MA_UCE 5 +#define PTE_MA_WC 6 +#define PTE_MA_NATPAGE 7 + +#define PTE_PL_KERN 0 +#define PTE_PL_USER 3 + +#define PTE_AR_R 0 +#define PTE_AR_RX 1 +#define PTE_AR_RW 2 +#define PTE_AR_RWX 3 +#define PTE_AR_R_RW 4 +#define PTE_AR_RX_RWX 5 +#define PTE_AR_RWX_RW 6 +#define PTE_AR_X_RX 7 + +/* + * A short-format VHPT entry. Also matches the TLB insertion format. + */ +struct ia64_pte { + u_int64_t pte_p :1; /* bits 0..0 */ + u_int64_t pte_rv1 :1; /* bits 1..1 */ + u_int64_t pte_ma :3; /* bits 2..4 */ + u_int64_t pte_a :1; /* bits 5..5 */ + u_int64_t pte_d :1; /* bits 6..6 */ + u_int64_t pte_pl :2; /* bits 7..8 */ + u_int64_t pte_ar :3; /* bits 9..11 */ + u_int64_t pte_ppn :38; /* bits 12..49 */ + u_int64_t pte_rv2 :2; /* bits 50..51 */ + u_int64_t pte_ed :1; /* bits 52..52 */ + u_int64_t pte_ig :11; /* bits 53..63 */ +}; + +void +enter_kernel(const char* filename, u_int64_t start) +{ + printf("Entering %s at 0x%lx...\n", filename, start); + + while (*filename == '/') + filename++; + ssc(0, (u_int64_t) filename, 0, 0, SSC_LOAD_SYMBOLS); + + __asm __volatile("mov cr.ipsr=%0" + :: "r"(IA64_PSR_IC + | IA64_PSR_DT + | IA64_PSR_RT + | IA64_PSR_IT + | IA64_PSR_BN)); + __asm __volatile("mov cr.iip=%0" :: "r"(start)); + __asm __volatile("mov cr.ifs=r0;;"); + __asm __volatile("rfi;;"); +} + +static int +elf_exec(struct preloaded_file *fp) +{ + struct file_metadata *md; + Elf_Ehdr *hdr; + struct ia64_pte pte; + struct bootinfo *bi; + + if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) + return(EFTYPE); /* XXX actually EFUCKUP */ + hdr = (Elf_Ehdr *)&(md->md_data); + + /* + * Ugly hack, similar to linux. Dump the bootinfo into a + * special page reserved in the link map. + */ + bi = (struct bootinfo *) 0x508000; + bzero(bi, sizeof(struct bootinfo)); + bi_load(bi, fp); + + /* + * Region 6 is direct mapped UC and region 7 is direct mapped + * WC. The details of this is controlled by the Alt {I,D}TLB + * handlers. Here we just make sure that they have the largest + * possible page size to minimise TLB usage. + */ + ia64_set_rr(IA64_RR_BASE(6), (6 << 8) | (28 << 2)); + ia64_set_rr(IA64_RR_BASE(7), (7 << 8) | (28 << 2)); + + bzero(&pte, sizeof(pte)); + pte.pte_p = 1; + pte.pte_ma = PTE_MA_WB; + pte.pte_a = 1; + pte.pte_d = 1; + pte.pte_pl = PTE_PL_KERN; + pte.pte_ar = PTE_AR_RWX; + pte.pte_ppn = 0; + + __asm __volatile("mov cr.ifa=%0" :: "r"(IA64_RR_BASE(7))); + __asm __volatile("mov cr.itir=%0" :: "r"(28 << 2)); + __asm __volatile("srlz.i;;"); + __asm __volatile("itr.i itr[%0]=%1;;" + :: "r"(0), "r"(*(u_int64_t*)&pte)); + __asm __volatile("itr.d dtr[%0]=%1;;" + :: "r"(0), "r"(*(u_int64_t*)&pte)); + __asm __volatile("srlz.i;;"); + + enter_kernel(fp->f_name, hdr->e_entry); + +#if 0 + static struct bootinfo_v1 bootinfo_v1; + struct file_metadata *md; + Elf_Ehdr *hdr; + int err; + + if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) + return(EFTYPE); /* XXX actually EFUCKUP */ + hdr = (Elf_Ehdr *)&(md->md_data); + + /* XXX ffp_save does not appear to be used in the kernel.. */ + bzero(&bootinfo_v1, sizeof(bootinfo_v1)); + err = bi_load(&bootinfo_v1, &ffp_save, fp); + if (err) + return(err); + + /* + * Fill in the bootinfo for the kernel. + */ + strncpy(bootinfo_v1.booted_kernel, fp->f_name, + sizeof(bootinfo_v1.booted_kernel)); + prom_getenv(PROM_E_BOOTED_OSFLAGS, bootinfo_v1.boot_flags, + sizeof(bootinfo_v1.boot_flags)); + bootinfo_v1.hwrpb = (void *)HWRPB_ADDR; + bootinfo_v1.hwrpbsize = ((struct rpb *)HWRPB_ADDR)->rpb_size; + bootinfo_v1.cngetc = NULL; + bootinfo_v1.cnputc = NULL; + bootinfo_v1.cnpollc = NULL; + + printf("Entering %s at 0x%lx...\n", fp->f_name, hdr->e_entry); + exit(0); + closeall(); + alpha_pal_imb(); + (*(void (*)())hdr->e_entry)(ffp_save, ptbr_save, + BOOTINFO_MAGIC, &bootinfo_v1, 1, 0); +#endif +} + + + |
