WebSVN – HelenOS – Diff – /trunk/kernel/arch/ia32/src/ia32.c

 /*
  * Copyright (c) 2001-2004 Jakub Jermar
+ * Copyright (c) 2009 Jiri Svoboda
+ * Copyright (c) 2009 Martin Decky
  * All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
+ *
  * - Redistributions of source code must retain the above copyright
  *   notice, this list of conditions and the following disclaimer.
  * - 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.
  * - The name of the author may not be used to endorse or promote products
  *   derived from this software without specific prior written permission.
+ *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
  */
 /** @addtogroup ia32
  * @{
  */
 /** @file
  */
 #include <arch.h>
 #include <arch/types.h>
 #include <arch/pm.h>
 #include <genarch/drivers/legacy/ia32/io.h>
 #include <genarch/drivers/ega/ega.h>
 #include <arch/drivers/vesa.h>
 #include <genarch/kbd/i8042.h>
 #include <arch/drivers/i8254.h>
 #include <arch/drivers/i8259.h>
 #include <arch/context.h>
 #include <config.h>
 #include <arch/interrupt.h>
 #include <arch/asm.h>
 #include <genarch/acpi/acpi.h>
 #include <arch/bios/bios.h>
 #include <interrupt.h>
 #include <ddi/irq.h>
 #include <arch/debugger.h>
 #include <proc/thread.h>
 #include <syscall/syscall.h>
 #include <console/console.h>
 #include <ddi/device.h>
 #include <sysinfo/sysinfo.h>
+#include <arch/boot/boot.h>
+#include <string.h>
+#include <macros.h>
 #ifdef CONFIG_SMP
 #include <arch/smp/apic.h>
 #endif
+/** Extract command name from the multiboot module command line.
+ *
+ * @param buf      Destination buffer (will always null-terminate).
+ * @param n        Size of destination buffer.
+ * @param cmd_line Input string (the command line).
+ *
+ */
+static void extract_command(char *buf, size_t n, const char *cmd_line)
+{
+    const char *start, *end, *cp;
+    size_t max_len;
+    /* Find the first space. */
+    end = strchr(cmd_line, ' ');
+    if (end == NULL)
+        end = cmd_line + strlen(cmd_line);
+    /*
+     * Find last occurence of '/' before 'end'. If found, place start at
+     * next character. Otherwise, place start at beginning of buffer.
+     */
+    cp = end;
+    start = buf;
+    while (cp != start) {
+        if (*cp == '/') {
+            start = cp + 1;
+            break;
+        }
+        --cp;
+    }
+    /* Copy the command and null-terminate the string. */
+    max_len = min(n - 1, (size_t) (end - start));
+    strncpy(buf, start, max_len + 1);
+    buf[max_len] = '\0';
+}
+/** C part of ia32 boot sequence.
+ *
+ * @param signature Should contain the multiboot signature.
+ * @param mi        Pointer to the multiboot information structure.
+ */
+void arch_pre_main(uint32_t signature, const mb_info_t *mi)
+{
+    uint32_t flags;
+    mb_mod_t *mods;
+    uint32_t i;
+    if (signature == MULTIBOOT_LOADER_MAGIC)
+        flags = mi->flags;
+    else {
+        /* No multiboot info available. */
+        flags = 0;
+    }
+    /* Copy module information. */
+    if ((flags & MBINFO_FLAGS_MODS) != 0) {
+        init.cnt = mi->mods_count;
+        mods = mi->mods_addr;
+        for (i = 0; i < init.cnt; i++) {
+            init.tasks[i].addr = mods[i].start + 0x80000000;
+            init.tasks[i].size = mods[i].end - mods[i].start;
+            /* Copy command line, if available. */
+            if (mods[i].string) {
+                extract_command(init.tasks[i].name,
+                    CONFIG_TASK_NAME_BUFLEN,
+                    mods[i].string);
+            } else
+                init.tasks[i].name[0] = '\0';
+        }
+    } else
+        init.cnt = 0;
+    /* Copy memory map. */
+    int32_t mmap_length;
+    mb_mmap_t *mme;
+    uint32_t size;
+    if ((flags & MBINFO_FLAGS_MMAP) != 0) {
+        mmap_length = mi->mmap_length;
+        mme = mi->mmap_addr;
+        e820counter = 0;
+        i = 0;
+        while (mmap_length > 0) {
+            e820table[i++] = mme->mm_info;
+            /* Compute address of next structure. */
+            size = sizeof(mme->size) + mme->size;
+            mme = ((void *) mme) + size;
+            mmap_length -= size;
+        }
+        e820counter = i;
+    } else
+        e820counter = 0;
+#ifdef CONFIG_SMP
+    /* Copy AP bootstrap routines below 1 MB. */
+    memcpy((void *) AP_BOOT_OFFSET, (void *) BOOT_OFFSET,
+        (size_t) &_hardcoded_unmapped_size);
+#endif
+}
 void arch_pre_mm_init(void)
+{
     pm_init();
     if (config.cpu_active == 1) {
         interrupt_init();
         bios_init();
         /* PIC */
         i8259_init();
+    }
+}
 void arch_post_mm_init(void)
+{
     if (config.cpu_active == 1) {
         /* Initialize IRQ routing */
         irq_init(IRQ_COUNT, IRQ_COUNT);
         /* hard clock */
         i8254_init();
 #ifdef CONFIG_FB
         if (vesa_present())
             vesa_init();
         else
 #endif
             ega_init(EGA_BASE, EGA_VIDEORAM);   /* video */
         /* Enable debugger */
         debugger_init();
         /* Merge all memory zones to 1 big zone */
         zone_merge_all();
+    }
+}
 void arch_post_cpu_init()
+{
 #ifdef CONFIG_SMP
         if (config.cpu_active > 1) {
         l_apic_init();
         l_apic_debug();
+    }
 #endif
+}
 void arch_pre_smp_init(void)
+{
     if (config.cpu_active == 1) {
 #ifdef CONFIG_SMP
         acpi_init();
 #endif /* CONFIG_SMP */
+    }
+}
 void arch_post_smp_init(void)
+{
     devno_t devno = device_assign_devno();
     /* keyboard controller */
     (void) i8042_init((i8042_t *) I8042_BASE, devno, IRQ_KBD);
     /*
      * This is the necessary evil until the userspace driver is entirely
      * self-sufficient.
      */
     sysinfo_set_item_val("kbd", NULL, true);
     sysinfo_set_item_val("kbd.devno", NULL, devno);
     sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD);
+}
 void calibrate_delay_loop(void)
+{
     i8254_calibrate_delay_loop();
     if (config.cpu_active == 1) {
         /*
          * This has to be done only on UP.
          * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
          */
         i8254_normal_operation();
+    }
+}
 /** Set thread-local-storage pointer
+ *
  * TLS pointer is set in GS register. That means, the GS contains
  * selector, and the descriptor->base is the correct address.
  */
 unative_t sys_tls_set(unative_t addr)
+{
     THREAD->arch.tls = addr;
     set_tls_desc(addr);
     return 0;
+}
 /** Acquire console back for kernel
+ *
  */
 void arch_grab_console(void)
+{
 #ifdef CONFIG_FB
     vesa_redraw();
 #else
     ega_redraw();
 #endif
+}
 /** Return console to userspace
+ *
  */
 void arch_release_console(void)
+{
+}
 /** Construct function pointer
+ *
  * @param fptr   function pointer structure
  * @param addr   function address
  * @param caller calling function address
+ *
  * @return address of the function pointer
+ *
  */
 void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
+{
     return addr;
+}
 /** @}
  */

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/ia32/src/ia32.c @ 2071 – Rev 3982 → 4015