diff options
Diffstat (limited to 'i386')
| -rw-r--r-- | i386/i386at/model_dep.c | 50 |
1 files changed, 22 insertions, 28 deletions
diff --git a/i386/i386at/model_dep.c b/i386/i386at/model_dep.c index f730c5b..1f7596c 100644 --- a/i386/i386at/model_dep.c +++ b/i386/i386at/model_dep.c @@ -65,7 +65,8 @@ vm_offset_t phys_last_addr; /* Virtual address of physical memory, for the kvtophys/phystokv macros. */ vm_offset_t phys_mem_va; -struct multiboot_info *boot_info; +/* A copy of the multiboot info structure passed by the boot loader. */ +struct multiboot_info boot_info; /* Command line supplied to kernel. */ char *kernel_cmdline = ""; @@ -203,9 +204,9 @@ mem_size_init() XX make it a constant. */ phys_first_addr = 0; - phys_last_addr = 0x100000 + (boot_info->mem_upper * 0x400); + phys_last_addr = 0x100000 + (boot_info.mem_upper * 0x400); avail_remaining - = phys_last_addr - (0x100000 - (boot_info->mem_lower * 0x400) + = phys_last_addr - (0x100000 - (boot_info.mem_lower * 0x400) - 0x1000); printf("AT386 boot: physical memory from 0x%x to 0x%x\n", @@ -295,7 +296,7 @@ i386at_init() void c_boot_entry(vm_offset_t bi) { /* Stash the boot_image_info pointer. */ - boot_info = (struct multiboot_info*)phystokv(bi); + boot_info = *(struct multiboot_info*)phystokv(bi); /* XXX we currently assume phys_mem_va is always 0 here - if it isn't, we must tweak the pointers in the boot_info. */ @@ -307,8 +308,8 @@ void c_boot_entry(vm_offset_t bi) printf("\n"); /* Find the kernel command line, if there is one. */ - if (boot_info->flags & MULTIBOOT_CMDLINE) - kernel_cmdline = (char*)phystokv(boot_info->cmdline); + if (boot_info.flags & MULTIBOOT_CMDLINE) + kernel_cmdline = (char*)phystokv(boot_info.cmdline); #if MACH_KDB /* @@ -316,14 +317,14 @@ void c_boot_entry(vm_offset_t bi) * We need to do this before i386at_init() * so that the symbol table's memory won't be stomped on. */ - if ((boot_info->flags & MULTIBOOT_AOUT_SYMS) - && boot_info->syms.a.addr) + if ((boot_info.flags & MULTIBOOT_AOUT_SYMS) + && boot_info.syms.a.addr) { vm_size_t symtab_size, strtab_size; - kern_sym_start = (vm_offset_t)phystokv(boot_info->syms.a.addr); - symtab_size = (vm_offset_t)phystokv(boot_info->syms.a.tabsize); - strtab_size = (vm_offset_t)phystokv(boot_info->syms.a.strsize); + kern_sym_start = (vm_offset_t)phystokv(boot_info.syms.a.addr); + symtab_size = (vm_offset_t)phystokv(boot_info.syms.a.tabsize); + strtab_size = (vm_offset_t)phystokv(boot_info.syms.a.strsize); kern_sym_end = kern_sym_start + 4 + symtab_size + strtab_size; printf("kernel symbol table at %08x-%08x (%d,%d)\n", @@ -451,18 +452,16 @@ init_alloc_aligned(vm_size_t size, vm_offset_t *addrp) int i; /* Memory regions to skip. */ - vm_offset_t boot_info_start_pa = kvtophys(boot_info); - vm_offset_t boot_info_end_pa = boot_info_start_pa + sizeof(*boot_info); - vm_offset_t cmdline_start_pa = boot_info->flags & MULTIBOOT_CMDLINE - ? boot_info->cmdline : 0; + vm_offset_t cmdline_start_pa = boot_info.flags & MULTIBOOT_CMDLINE + ? boot_info.cmdline : 0; vm_offset_t cmdline_end_pa = cmdline_start_pa ? cmdline_start_pa+strlen((char*)phystokv(cmdline_start_pa))+1 : 0; - vm_offset_t mods_start_pa = boot_info->flags & MULTIBOOT_MODS - ? boot_info->mods_addr : 0; + vm_offset_t mods_start_pa = boot_info.flags & MULTIBOOT_MODS + ? boot_info.mods_addr : 0; vm_offset_t mods_end_pa = mods_start_pa ? mods_start_pa - + boot_info->mods_count * sizeof(struct multiboot_module) + + boot_info.mods_count * sizeof(struct multiboot_module) : 0; retry: @@ -482,7 +481,7 @@ init_alloc_aligned(vm_size_t size, vm_offset_t *addrp) avail_next += size; /* Skip past the I/O and ROM area. */ - if ((avail_next > (boot_info->mem_lower * 0x400)) && (addr < 0x100000)) + if ((avail_next > (boot_info.mem_lower * 0x400)) && (addr < 0x100000)) { avail_next = 0x100000; goto retry; @@ -501,11 +500,6 @@ init_alloc_aligned(vm_size_t size, vm_offset_t *addrp) } /* Skip any areas occupied by valuable boot_info data. */ - if ((avail_next > boot_info_start_pa) && (addr < boot_info_end_pa)) - { - avail_next = boot_info_end_pa; - goto retry; - } if ((avail_next > cmdline_start_pa) && (addr < cmdline_end_pa)) { avail_next = cmdline_end_pa; @@ -521,11 +515,11 @@ init_alloc_aligned(vm_size_t size, vm_offset_t *addrp) avail_next = kern_sym_end; goto retry; } - if (boot_info->flags & MULTIBOOT_MODS) + if (boot_info.flags & MULTIBOOT_MODS) { struct multiboot_module *m = (struct multiboot_module *) - phystokv(boot_info->mods_addr); - for (i = 0; i < boot_info->mods_count; i++) + phystokv(boot_info.mods_addr); + for (i = 0; i < boot_info.mods_count; i++) { if ((avail_next > m[i].mod_start) && (addr < m[i].mod_end)) @@ -566,7 +560,7 @@ boolean_t pmap_valid_page(x) { /* XXX is this OK? What does it matter for? */ return (((phys_first_addr <= x) && (x < phys_last_addr)) && - !(((boot_info->mem_lower * 1024) <= x) && (x < 1024*1024))); + !(((boot_info.mem_lower * 1024) <= x) && (x < 1024*1024))); } #ifndef NBBY |