diff options
| -rw-r--r-- | arch/x86/kernel/Makefile_32 | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/e820_32.c | 5 | ||||
| -rw-r--r-- | arch/x86/kernel/efi_32.c | 430 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_32.c | 11 | ||||
| -rw-r--r-- | include/asm-x86/efi.h | 42 |
5 files changed, 47 insertions, 443 deletions
diff --git a/arch/x86/kernel/Makefile_32 b/arch/x86/kernel/Makefile_32 index cc2651bcc07f..a854e23eac0b 100644 --- a/arch/x86/kernel/Makefile_32 +++ b/arch/x86/kernel/Makefile_32 @@ -38,7 +38,7 @@ obj-$(CONFIG_X86_SUMMIT_NUMA) += summit_32.o obj-$(CONFIG_KPROBES) += kprobes_32.o obj-$(CONFIG_MODULES) += module_32.o obj-$(CONFIG_ACPI_SRAT) += srat_32.o -obj-$(CONFIG_EFI) += efi_32.o efi_stub_32.o +obj-$(CONFIG_EFI) += efi.o efi_32.o efi_stub_32.o obj-$(CONFIG_DOUBLEFAULT) += doublefault_32.o obj-$(CONFIG_VM86) += vm86_32.o obj-$(CONFIG_EARLY_PRINTK) += early_printk.o diff --git a/arch/x86/kernel/e820_32.c b/arch/x86/kernel/e820_32.c index 87cadc86d5ee..56335a85a15a 100644 --- a/arch/x86/kernel/e820_32.c +++ b/arch/x86/kernel/e820_32.c @@ -17,11 +17,6 @@ #include <asm/e820.h> #include <asm/setup.h> -#ifdef CONFIG_EFI -int efi_enabled = 0; -EXPORT_SYMBOL(efi_enabled); -#endif - struct e820map e820; struct change_member { struct e820entry *pbios; /* pointer to original bios entry */ diff --git a/arch/x86/kernel/efi_32.c b/arch/x86/kernel/efi_32.c index 863e8926f2bb..1df13725e519 100644 --- a/arch/x86/kernel/efi_32.c +++ b/arch/x86/kernel/efi_32.c @@ -39,21 +39,8 @@ #include <asm/desc.h> #include <asm/tlbflush.h> -#define EFI_DEBUG 0 #define PFX "EFI: " -extern efi_status_t asmlinkage efi_call_phys(void *, ...); - -struct efi efi; -EXPORT_SYMBOL(efi); -static struct efi efi_phys; -struct efi_memory_map memmap; - -/* - * We require an early boot_ioremap mapping mechanism initially - */ -extern void * boot_ioremap(unsigned long, unsigned long); - /* * To make EFI call EFI runtime service in physical addressing mode we need * prelog/epilog before/after the invocation to disable interrupt, to @@ -65,7 +52,7 @@ static unsigned long efi_rt_eflags; static DEFINE_SPINLOCK(efi_rt_lock); static pgd_t efi_bak_pg_dir_pointer[2]; -static void efi_call_phys_prelog(void) __acquires(efi_rt_lock) +void efi_call_phys_prelog(void) __acquires(efi_rt_lock) { unsigned long cr4; unsigned long temp; @@ -108,7 +95,7 @@ static void efi_call_phys_prelog(void) __acquires(efi_rt_lock) load_gdt(&gdt_descr); } -static void efi_call_phys_epilog(void) __releases(efi_rt_lock) +void efi_call_phys_epilog(void) __releases(efi_rt_lock) { unsigned long cr4; struct desc_ptr gdt_descr; @@ -138,87 +125,6 @@ static void efi_call_phys_epilog(void) __releases(efi_rt_lock) spin_unlock(&efi_rt_lock); } -static efi_status_t -phys_efi_set_virtual_address_map(unsigned long memory_map_size, - unsigned long descriptor_size, - u32 descriptor_version, - efi_memory_desc_t *virtual_map) -{ - efi_status_t status; - - efi_call_phys_prelog(); - status = efi_call_phys(efi_phys.set_virtual_address_map, - memory_map_size, descriptor_size, - descriptor_version, virtual_map); - efi_call_phys_epilog(); - return status; -} - -static efi_status_t -phys_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc) -{ - efi_status_t status; - - efi_call_phys_prelog(); - status = efi_call_phys(efi_phys.get_time, tm, tc); - efi_call_phys_epilog(); - return status; -} - -inline int efi_set_rtc_mmss(unsigned long nowtime) -{ - int real_seconds, real_minutes; - efi_status_t status; - efi_time_t eft; - efi_time_cap_t cap; - - spin_lock(&efi_rt_lock); - status = efi.get_time(&eft, &cap); - spin_unlock(&efi_rt_lock); - if (status != EFI_SUCCESS) - panic("Ooops, efitime: can't read time!\n"); - real_seconds = nowtime % 60; - real_minutes = nowtime / 60; - - if (((abs(real_minutes - eft.minute) + 15)/30) & 1) - real_minutes += 30; - real_minutes %= 60; - - eft.minute = real_minutes; - eft.second = real_seconds; - - if (status != EFI_SUCCESS) { - printk("Ooops: efitime: can't read time!\n"); - return -1; - } - return 0; -} -/* - * This is used during kernel init before runtime - * services have been remapped and also during suspend, therefore, - * we'll need to call both in physical and virtual modes. - */ -inline unsigned long efi_get_time(void) -{ - efi_status_t status; - efi_time_t eft; - efi_time_cap_t cap; - - if (efi.get_time) { - /* if we are in virtual mode use remapped function */ - status = efi.get_time(&eft, &cap); - } else { - /* we are in physical mode */ - status = phys_efi_get_time(&eft, &cap); - } - - if (status != EFI_SUCCESS) - printk("Oops: efitime: can't read time status: 0x%lx\n",status); - - return mktime(eft.year, eft.month, eft.day, eft.hour, - eft.minute, eft.second); -} - int is_available_memory(efi_memory_desc_t * md) { if (!(md->attribute & EFI_MEMORY_WB)) @@ -250,24 +156,6 @@ void __init efi_map_memmap(void) memmap.map_end = memmap.map + (memmap.nr_map * memmap.desc_size); } -#if EFI_DEBUG -static void __init print_efi_memmap(void) -{ - efi_memory_desc_t *md; - void *p; - int i; - - for (p = memmap.map, i = 0; p < memmap.map_end; p += memmap.desc_size, i++) { - md = p; - printk(KERN_INFO "mem%02u: type=%u, attr=0x%llx, " - "range=[0x%016llx-0x%016llx) (%lluMB)\n", - i, md->type, md->attribute, md->phys_addr, - md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT), - (md->num_pages >> (20 - EFI_PAGE_SHIFT))); - } -} -#endif /* EFI_DEBUG */ - /* * Walks the EFI memory map and calls CALLBACK once for each EFI * memory descriptor that has memory that is available for kernel use. @@ -319,288 +207,6 @@ void efi_memmap_walk(efi_freemem_callback_t callback, void *arg) } } -void __init efi_init(void) -{ - efi_config_table_t *config_tables; - efi_runtime_services_t *runtime; - efi_char16_t *c16; - char vendor[100] = "unknown"; - unsigned long num_config_tables; - int i = 0; - - memset(&efi, 0, sizeof(efi) ); - memset(&efi_phys, 0, sizeof(efi_phys)); - - efi_phys.systab = - (efi_system_table_t *)boot_params.efi_info.efi_systab; - memmap.phys_map = (void *)boot_params.efi_info.efi_memmap; - memmap.nr_map = boot_params.efi_info.efi_memmap_size/ - boot_params.efi_info.efi_memdesc_size; - memmap.desc_version = boot_params.efi_info.efi_memdesc_version; - memmap.desc_size = boot_params.efi_info.efi_memdesc_size; - - efi.systab = (efi_system_table_t *) - boot_ioremap((unsigned long) efi_phys.systab, - sizeof(efi_system_table_t)); - /* - * Verify the EFI Table - */ - if (efi.systab == NULL) - printk(KERN_ERR PFX "Woah! Couldn't map the EFI system table.\n"); - if (efi.systab->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE) - printk(KERN_ERR PFX "Woah! EFI system table signature incorrect\n"); - if ((efi.systab->hdr.revision >> 16) == 0) - printk(KERN_ERR PFX "Warning: EFI system table version " - "%d.%02d, expected 1.00 or greater\n", - efi.systab->hdr.revision >> 16, - efi.systab->hdr.revision & 0xffff); - - /* - * Grab some details from the system table - */ - num_config_tables = efi.systab->nr_tables; - config_tables = (efi_config_table_t *)efi.systab->tables; - runtime = efi.systab->runtime; - - /* - * Show what we know for posterity - */ - c16 = (efi_char16_t *) boot_ioremap(efi.systab->fw_vendor, 2); - if (c16) { - for (i = 0; i < (sizeof(vendor) - 1) && *c16; ++i) - vendor[i] = *c16++; - vendor[i] = '\0'; - } else - printk(KERN_ERR PFX "Could not map the firmware vendor!\n"); - - printk(KERN_INFO PFX "EFI v%u.%.02u by %s \n", - efi.systab->hdr.revision >> 16, - efi.systab->hdr.revision & 0xffff, vendor); - - /* - * Let's see what config tables the firmware passed to us. - */ - config_tables = (efi_config_table_t *) - boot_ioremap((unsigned long) config_tables, - num_config_tables * sizeof(efi_config_table_t)); - - if (config_tables == NULL) - printk(KERN_ERR PFX "Could not map EFI Configuration Table!\n"); - - efi.mps = EFI_INVALID_TABLE_ADDR; - efi.acpi = EFI_INVALID_TABLE_ADDR; - efi.acpi20 = EFI_INVALID_TABLE_ADDR; - efi.smbios = EFI_INVALID_TABLE_ADDR; - efi.sal_systab = EFI_INVALID_TABLE_ADDR; - efi.boot_info = EFI_INVALID_TABLE_ADDR; - efi.hcdp = EFI_INVALID_TABLE_ADDR; - efi.uga = EFI_INVALID_TABLE_ADDR; - - for (i = 0; i < num_config_tables; i++) { - if (efi_guidcmp(config_tables[i].guid, MPS_TABLE_GUID) == 0) { - efi.mps = config_tables[i].table; - printk(KERN_INFO " MPS=0x%lx ", config_tables[i].table); - } else - if (efi_guidcmp(config_tables[i].guid, ACPI_20_TABLE_GUID) == 0) { - efi.acpi20 = config_tables[i].table; - printk(KERN_INFO " ACPI 2.0=0x%lx ", config_tables[i].table); - } else - if (efi_guidcmp(config_tables[i].guid, ACPI_TABLE_GUID) == 0) { - efi.acpi = config_tables[i].table; - printk(KERN_INFO " ACPI=0x%lx ", config_tables[i].table); - } else - if (efi_guidcmp(config_tables[i].guid, SMBIOS_TABLE_GUID) == 0) { - efi.smbios = config_tables[i].table; - printk(KERN_INFO " SMBIOS=0x%lx ", config_tables[i].table); - } else - if (efi_guidcmp(config_tables[i].guid, HCDP_TABLE_GUID) == 0) { - efi.hcdp = config_tables[i].table; - printk(KERN_INFO " HCDP=0x%lx ", config_tables[i].table); - } else - if (efi_guidcmp(config_tables[i].guid, UGA_IO_PROTOCOL_GUID) == 0) { - efi.uga = config_tables[i].table; - printk(KERN_INFO " UGA=0x%lx ", config_tables[i].table); - } - } - printk("\n"); - - /* - * Check out the runtime services table. We need to map - * the runtime services table so that we can grab the physical - * address of several of the EFI runtime functions, needed to - * set the firmware into virtual mode. - */ - - runtime = (efi_runtime_services_t *) boot_ioremap((unsigned long) - runtime, - sizeof(efi_runtime_services_t)); - if (runtime != NULL) { - /* - * We will only need *early* access to the following - * two EFI runtime services before set_virtual_address_map - * is invoked. - */ - efi_phys.get_time = (efi_get_time_t *) runtime->get_time; - efi_phys.set_virtual_address_map = - (efi_set_virtual_address_map_t *) - runtime->set_virtual_address_map; - } else - printk(KERN_ERR PFX "Could not map the runtime service table!\n"); - - /* Map the EFI memory map for use until paging_init() */ - memmap.map = boot_ioremap(boot_params.efi_info.efi_memmap, - boot_params.efi_info.efi_memmap_size); - if (memmap.map == NULL) - printk(KERN_ERR PFX "Could not map the EFI memory map!\n"); - - memmap.map_end = memmap.map + (memmap.nr_map * memmap.desc_size); - -#if EFI_DEBUG - print_efi_memmap(); -#endif -} - -static inline void __init check_range_for_systab(efi_memory_desc_t *md) -{ - if (((unsigned long)md->phys_addr <= (unsigned long)efi_phys.systab) && - ((unsigned long)efi_phys.systab < md->phys_addr + - ((unsigned long)md->num_pages << EFI_PAGE_SHIFT))) { - unsigned long addr; - - addr = md->virt_addr - md->phys_addr + - (unsigned long)efi_phys.systab; - efi.systab = (efi_system_table_t *)addr; - } -} - -/* - * Wrap all the virtual calls in a way that forces the parameters on the stack. - */ - -#define efi_call_virt(f, args...) \ - ((efi_##f##_t __attribute__((regparm(0)))*)efi.systab->runtime->f)(args) - -static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc) -{ - return efi_call_virt(get_time, tm, tc); -} - -static efi_status_t virt_efi_set_time (efi_time_t *tm) -{ - return efi_call_virt(set_time, tm); -} - -static efi_status_t virt_efi_get_wakeup_time (efi_bool_t *enabled, - efi_bool_t *pending, - efi_time_t *tm) -{ - return efi_call_virt(get_wakeup_time, enabled, pending, tm); -} - -static efi_status_t virt_efi_set_wakeup_time (efi_bool_t enabled, - efi_time_t *tm) -{ - return efi_call_virt(set_wakeup_time, enabled, tm); -} - -static efi_status_t virt_efi_get_variable (efi_char16_t *name, - efi_guid_t *vendor, u32 *attr, - unsigned long *data_size, void *data) -{ - return efi_call_virt(get_variable, name, vendor, attr, data_size, data); -} - -static efi_status_t virt_efi_get_next_variable (unsigned long *name_size, - efi_char16_t *name, - efi_guid_t *vendor) -{ - return efi_call_virt(get_next_variable, name_size, name, vendor); -} - -static efi_status_t virt_efi_set_variable (efi_char16_t *name, - efi_guid_t *vendor, - unsigned long attr, - unsigned long data_size, void *data) -{ - return efi_call_virt(set_variable, name, vendor, attr, data_size, data); -} - -static efi_status_t virt_efi_get_next_high_mono_count (u32 *count) -{ - return efi_call_virt(get_next_high_mono_count, count); -} - -static void virt_efi_reset_system (int reset_type, efi_status_t status, - unsigned long data_size, - efi_char16_t *data) -{ - efi_call_virt(reset_system, reset_type, status, data_size, data); -} - -/* - * This function will switch the EFI runtime services to virtual mode. - * Essentially, look through the EFI memmap and map every region that - * has the runtime attribute bit set in its memory descriptor and update - * that memory descriptor with the virtual address obtained from ioremap(). - * This enables the runtime services to be called without having to - * thunk back into physical mode for every invocation. - */ - -void __init efi_enter_virtual_mode(void) -{ - efi_memory_desc_t *md; - efi_status_t status; - void *p; - - efi.systab = NULL; - - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { - md = p; - - if (!(md->attribute & EFI_MEMORY_RUNTIME)) - continue; - - md->virt_addr = (unsigned long)ioremap(md->phys_addr, - md->num_pages << EFI_PAGE_SHIFT); - if (!(unsigned long)md->virt_addr) { - printk(KERN_ERR PFX "ioremap of 0x%lX failed\n", - (unsigned long)md->phys_addr); - } - /* update the virtual address of the EFI system table */ - check_range_for_systab(md); - } - - BUG_ON(!efi.systab); - - status = phys_efi_set_virtual_address_map( - memmap.desc_size * memmap.nr_map, - memmap.desc_size, - memmap.desc_version, - memmap.phys_map); - - if (status != EFI_SUCCESS) { - printk (KERN_ALERT "You are screwed! " - "Unable to switch EFI into virtual mode " - "(status=%lx)\n", status); - panic("EFI call to SetVirtualAddressMap() failed!"); - } - - /* - * Now that EFI is in virtual mode, update the function - * pointers in the runtime service table to the new virtual addresses. - */ - - efi.get_time = virt_efi_get_time; - efi.set_time = virt_efi_set_time; - efi.get_wakeup_time = virt_efi_get_wakeup_time; - efi.set_wakeup_time = virt_efi_set_wakeup_time; - efi.get_variable = virt_efi_get_variable; - efi.get_next_variable = virt_efi_get_next_variable; - efi.set_variable = virt_efi_set_variable; - efi.get_next_high_mono_count = virt_efi_get_next_high_mono_count; - efi.reset_system = virt_efi_reset_system; -} - void __init efi_initialize_iomem_resources(struct resource *code_resource, struct resource *data_resource, @@ -683,35 +289,3 @@ efi_initialize_iomem_resources(struct resource *code_resource, } } } - -/* - * Convenience functions to obtain memory types and attributes - */ - -u32 efi_mem_type(unsigned long phys_addr) -{ - efi_memory_desc_t *md; - void *p; - - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { - md = p; - if ((md->phys_addr <= phys_addr) && (phys_addr < - (md->phys_addr + (md-> num_pages << EFI_PAGE_SHIFT)) )) - return md->type; - } - return 0; -} - -u64 efi_mem_attributes(unsigned long phys_addr) -{ - efi_memory_desc_t *md; - void *p; - - for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) { - md = p; - if ((md->phys_addr <= phys_addr) && (phys_addr < - (md->phys_addr + (md-> num_pages << EFI_PAGE_SHIFT)) )) - return md->attribute; - } - return 0; -} diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c index e9ede0fc585a..32fc87adc4a3 100644 --- a/arch/x86/kernel/setup_32.c +++ b/arch/x86/kernel/setup_32.c @@ -618,16 +618,9 @@ void __init setup_arch(char **cmdline_p) pre_setup_arch_hook(); early_cpu_init(); - /* - * FIXME: This isn't an official loader_type right - * now but does currently work with elilo. - * If we were configured as an EFI kernel, check to make - * sure that we were loaded correctly from elilo and that - * the system table is valid. If not, then initialize normally. - */ #ifdef CONFIG_EFI - if ((boot_params.hdr.type_of_loader == 0x50) && - boot_params.efi_info.efi_systab) + if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature, + "EL32", 4)) efi_enabled = 1; #endif diff --git a/include/asm-x86/efi.h b/include/asm-x86/efi.h index 1459d3d58653..6d54502755aa 100644 --- a/include/asm-x86/efi.h +++ b/include/asm-x86/efi.h @@ -2,6 +2,48 @@ #define _ASM_X86_EFI_H #ifdef CONFIG_X86_32 + +extern unsigned long asmlinkage efi_call_phys(void *, ...); + +#define efi_call_phys0(f) efi_call_phys(f) +#define efi_call_phys1(f, a1) efi_call_phys(f, a1) +#define efi_call_phys2(f, a1, a2) efi_call_phys(f, a1, a2) +#define efi_call_phys3(f, a1, a2, a3) efi_call_phys(f, a1, a2, a3) +#define efi_call_phys4(f, a1, a2, a3, a4) \ + efi_call_phys(f, a1, a2, a3, a4) +#define efi_call_phys5(f, a1, a2, a3, a4, a5) \ + efi_call_phys(f, a1, a2, a3, a4, a5) +#define efi_call_phys6(f, a1, a2, a3, a4, a5, a6) \ + efi_call_phys(f, a1, a2, a3, a4, a5, a6) +/* + * Wrap all the virtual calls in a way that forces the parameters on the stack. + */ + +#define efi_call_virt(f, args...) \ + ((efi_##f##_t __attribute__((regparm(0)))*)efi.systab->runtime->f)(args) + +#define efi_call_virt0(f) efi_call_virt(f) +#define efi_call_virt1(f, a1) efi_call_virt(f, a1) +#define efi_call_virt2(f, a1, a2) efi_call_virt(f, a1, a2) +#define efi_call_virt3(f, a1, a2, a3) efi_call_virt(f, a1, a2, a3) +#define efi_call_virt4(f, a1, a2, a3, a4) \ + efi_call_virt(f, a1, a2, a3, a4) +#define efi_call_virt5(f, a1, a2, a3, a4, a5) \ + efi_call_virt(f, a1, a2, a3, a4, a5) +#define efi_call_virt6(f, a1, a2, a3, a4, a5, a6) \ + efi_call_virt(f, a1, a2, a3, a4, a5, a6) +/* + * We require an early boot_ioremap mapping mechanism initially + */ +extern void *boot_ioremap(unsigned long, unsigned long); + +#define efi_early_ioremap(addr, size) boot_ioremap(addr, size) +#define efi_early_iounmap(vaddr, size) + +#define efi_ioremap(addr, size) ioremap(addr, size) + +#define end_pfn_map max_low_pfn + #else /* !CONFIG_X86_32 */ #define MAX_EFI_IO_PAGES 100 |