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+/* $FreeBSD$ */
+/* $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
+}
+
+
+
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