efi/x86: Clean up the eboot code
Various small cleanups: - Standardize printk messages: 'alloc' => 'allocate' 'mem' => 'memory' also put variable names in printk messages between quotes. - Align mass-assignments vertically for better readability - Break multi-line function prototypes at the name where possible, not in the middle of the parameter list - Use a newline before return statements consistently. - Use curly braces in a balanced fashion. - Remove stray newlines. No change in functionality. Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/20180711094040.12506-2-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
parent
9d3cce1e8b
commit
90a2186b7d
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@ -34,9 +34,9 @@ static void setup_boot_services##bits(struct efi_config *c) \
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\
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table = (typeof(table))sys_table; \
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\
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c->runtime_services = table->runtime; \
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c->boot_services = table->boottime; \
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c->text_output = table->con_out; \
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c->runtime_services = table->runtime; \
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c->boot_services = table->boottime; \
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c->text_output = table->con_out; \
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}
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BOOT_SERVICES(32);
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BOOT_SERVICES(64);
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@ -64,6 +64,7 @@ static inline efi_status_t __open_volume32(void *__image, void **__fh)
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efi_printk(sys_table, "Failed to open volume\n");
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*__fh = fh;
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return status;
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}
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@ -90,6 +91,7 @@ static inline efi_status_t __open_volume64(void *__image, void **__fh)
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efi_printk(sys_table, "Failed to open volume\n");
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*__fh = fh;
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return status;
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}
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@ -134,16 +136,16 @@ __setup_efi_pci(efi_pci_io_protocol_t *pci, struct pci_setup_rom **__rom)
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status = efi_call_early(allocate_pool, EFI_LOADER_DATA, size, &rom);
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if (status != EFI_SUCCESS) {
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efi_printk(sys_table, "Failed to alloc mem for rom\n");
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efi_printk(sys_table, "Failed to allocate memory for 'rom'\n");
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return status;
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}
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memset(rom, 0, sizeof(*rom));
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rom->data.type = SETUP_PCI;
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rom->data.len = size - sizeof(struct setup_data);
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rom->data.next = 0;
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rom->pcilen = pci->romsize;
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rom->data.type = SETUP_PCI;
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rom->data.len = size - sizeof(struct setup_data);
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rom->data.next = 0;
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rom->pcilen = pci->romsize;
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*__rom = rom;
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status = efi_call_proto(efi_pci_io_protocol, pci.read, pci,
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@ -180,8 +182,7 @@ free_struct:
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}
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static void
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setup_efi_pci32(struct boot_params *params, void **pci_handle,
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unsigned long size)
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setup_efi_pci32(struct boot_params *params, void **pci_handle, unsigned long size)
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{
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efi_pci_io_protocol_t *pci = NULL;
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efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID;
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@ -220,13 +221,11 @@ setup_efi_pci32(struct boot_params *params, void **pci_handle,
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params->hdr.setup_data = (unsigned long)rom;
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data = (struct setup_data *)rom;
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}
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}
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static void
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setup_efi_pci64(struct boot_params *params, void **pci_handle,
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unsigned long size)
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setup_efi_pci64(struct boot_params *params, void **pci_handle, unsigned long size)
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{
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efi_pci_io_protocol_t *pci = NULL;
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efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID;
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@ -265,7 +264,6 @@ setup_efi_pci64(struct boot_params *params, void **pci_handle,
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params->hdr.setup_data = (unsigned long)rom;
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data = (struct setup_data *)rom;
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}
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}
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@ -295,7 +293,7 @@ static void setup_efi_pci(struct boot_params *params)
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size, (void **)&pci_handle);
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if (status != EFI_SUCCESS) {
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efi_printk(sys_table, "Failed to alloc mem for pci_handle\n");
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efi_printk(sys_table, "Failed to allocate memory for 'pci_handle'\n");
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return;
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}
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@ -341,8 +339,7 @@ static void retrieve_apple_device_properties(struct boot_params *boot_params)
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status = efi_call_early(allocate_pool, EFI_LOADER_DATA,
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size + sizeof(struct setup_data), &new);
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if (status != EFI_SUCCESS) {
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efi_printk(sys_table,
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"Failed to alloc mem for properties\n");
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efi_printk(sys_table, "Failed to allocate memory for 'properties'\n");
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return;
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}
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@ -358,9 +355,9 @@ static void retrieve_apple_device_properties(struct boot_params *boot_params)
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new->next = 0;
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data = (struct setup_data *)(unsigned long)boot_params->hdr.setup_data;
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if (!data)
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if (!data) {
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boot_params->hdr.setup_data = (unsigned long)new;
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else {
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} else {
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while (data->next)
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data = (struct setup_data *)(unsigned long)data->next;
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data->next = (unsigned long)new;
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@ -473,8 +470,8 @@ setup_uga64(void **uga_handle, unsigned long size, u32 *width, u32 *height)
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/*
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* See if we have Universal Graphics Adapter (UGA) protocol
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*/
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static efi_status_t setup_uga(struct screen_info *si, efi_guid_t *uga_proto,
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unsigned long size)
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static efi_status_t
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setup_uga(struct screen_info *si, efi_guid_t *uga_proto, unsigned long size)
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{
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efi_status_t status;
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u32 width, height;
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@ -503,23 +500,24 @@ static efi_status_t setup_uga(struct screen_info *si, efi_guid_t *uga_proto,
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goto free_handle;
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/* EFI framebuffer */
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si->orig_video_isVGA = VIDEO_TYPE_EFI;
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si->orig_video_isVGA = VIDEO_TYPE_EFI;
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si->lfb_depth = 32;
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si->lfb_width = width;
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si->lfb_height = height;
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si->lfb_depth = 32;
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si->lfb_width = width;
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si->lfb_height = height;
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si->red_size = 8;
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si->red_pos = 16;
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si->green_size = 8;
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si->green_pos = 8;
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si->blue_size = 8;
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si->blue_pos = 0;
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si->rsvd_size = 8;
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si->rsvd_pos = 24;
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si->red_size = 8;
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si->red_pos = 16;
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si->green_size = 8;
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si->green_pos = 8;
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si->blue_size = 8;
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si->blue_pos = 0;
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si->rsvd_size = 8;
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si->rsvd_pos = 24;
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free_handle:
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efi_call_early(free_pool, uga_handle);
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return status;
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}
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@ -601,7 +599,7 @@ struct boot_params *make_boot_params(struct efi_config *c)
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status = efi_low_alloc(sys_table, 0x4000, 1,
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(unsigned long *)&boot_params);
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if (status != EFI_SUCCESS) {
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efi_printk(sys_table, "Failed to alloc lowmem for boot params\n");
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efi_printk(sys_table, "Failed to allocate lowmem for boot params\n");
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return NULL;
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}
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@ -617,9 +615,9 @@ struct boot_params *make_boot_params(struct efi_config *c)
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* Fill out some of the header fields ourselves because the
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* EFI firmware loader doesn't load the first sector.
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*/
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hdr->root_flags = 1;
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hdr->vid_mode = 0xffff;
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hdr->boot_flag = 0xAA55;
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hdr->root_flags = 1;
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hdr->vid_mode = 0xffff;
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hdr->boot_flag = 0xAA55;
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hdr->type_of_loader = 0x21;
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@ -627,6 +625,7 @@ struct boot_params *make_boot_params(struct efi_config *c)
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cmdline_ptr = efi_convert_cmdline(sys_table, image, &options_size);
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if (!cmdline_ptr)
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goto fail;
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hdr->cmd_line_ptr = (unsigned long)cmdline_ptr;
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/* Fill in upper bits of command line address, NOP on 32 bit */
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boot_params->ext_cmd_line_ptr = (u64)(unsigned long)cmdline_ptr >> 32;
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@ -663,10 +662,12 @@ struct boot_params *make_boot_params(struct efi_config *c)
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boot_params->ext_ramdisk_size = (u64)ramdisk_size >> 32;
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return boot_params;
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fail2:
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efi_free(sys_table, options_size, hdr->cmd_line_ptr);
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fail:
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efi_free(sys_table, 0x4000, (unsigned long)boot_params);
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return NULL;
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}
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@ -678,7 +679,7 @@ static void add_e820ext(struct boot_params *params,
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unsigned long size;
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e820ext->type = SETUP_E820_EXT;
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e820ext->len = nr_entries * sizeof(struct boot_e820_entry);
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e820ext->len = nr_entries * sizeof(struct boot_e820_entry);
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e820ext->next = 0;
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data = (struct setup_data *)(unsigned long)params->hdr.setup_data;
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@ -692,8 +693,8 @@ static void add_e820ext(struct boot_params *params,
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params->hdr.setup_data = (unsigned long)e820ext;
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}
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static efi_status_t setup_e820(struct boot_params *params,
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struct setup_data *e820ext, u32 e820ext_size)
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static efi_status_t
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setup_e820(struct boot_params *params, struct setup_data *e820ext, u32 e820ext_size)
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{
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struct boot_e820_entry *entry = params->e820_table;
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struct efi_info *efi = ¶ms->efi_info;
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}
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struct exit_boot_struct {
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struct boot_params *boot_params;
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struct efi_info *efi;
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struct setup_data *e820ext;
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__u32 e820ext_size;
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bool is64;
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struct boot_params *boot_params;
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struct efi_info *efi;
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struct setup_data *e820ext;
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__u32 e820ext_size;
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bool is64;
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};
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static efi_status_t exit_boot_func(efi_system_table_t *sys_table_arg,
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signature = p->is64 ? EFI64_LOADER_SIGNATURE : EFI32_LOADER_SIGNATURE;
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memcpy(&p->efi->efi_loader_signature, signature, sizeof(__u32));
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p->efi->efi_systab = (unsigned long)sys_table_arg;
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p->efi->efi_memdesc_size = *map->desc_size;
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p->efi->efi_memdesc_version = *map->desc_ver;
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p->efi->efi_memmap = (unsigned long)*map->map;
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p->efi->efi_memmap_size = *map->map_size;
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p->efi->efi_systab = (unsigned long)sys_table_arg;
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p->efi->efi_memdesc_size = *map->desc_size;
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p->efi->efi_memdesc_version = *map->desc_ver;
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p->efi->efi_memmap = (unsigned long)*map->map;
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p->efi->efi_memmap_size = *map->map_size;
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#ifdef CONFIG_X86_64
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p->efi->efi_systab_hi = (unsigned long)sys_table_arg >> 32;
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p->efi->efi_memmap_hi = (unsigned long)*map->map >> 32;
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p->efi->efi_systab_hi = (unsigned long)sys_table_arg >> 32;
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p->efi->efi_memmap_hi = (unsigned long)*map->map >> 32;
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#endif
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return EFI_SUCCESS;
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@ -874,17 +875,17 @@ static efi_status_t exit_boot(struct boot_params *boot_params,
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struct efi_boot_memmap map;
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struct exit_boot_struct priv;
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map.map = &mem_map;
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map.map_size = &map_sz;
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map.desc_size = &desc_size;
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map.desc_ver = &desc_version;
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map.key_ptr = &key;
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map.buff_size = &buff_size;
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priv.boot_params = boot_params;
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priv.efi = &boot_params->efi_info;
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priv.e820ext = NULL;
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priv.e820ext_size = 0;
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priv.is64 = is64;
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map.map = &mem_map;
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map.map_size = &map_sz;
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map.desc_size = &desc_size;
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map.desc_ver = &desc_version;
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map.key_ptr = &key;
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map.buff_size = &buff_size;
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priv.boot_params = boot_params;
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priv.efi = &boot_params->efi_info;
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priv.e820ext = NULL;
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priv.e820ext_size = 0;
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priv.is64 = is64;
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/* Might as well exit boot services now */
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status = efi_exit_boot_services(sys_table, handle, &map, &priv,
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@ -892,10 +893,11 @@ static efi_status_t exit_boot(struct boot_params *boot_params,
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if (status != EFI_SUCCESS)
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return status;
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e820ext = priv.e820ext;
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e820ext_size = priv.e820ext_size;
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e820ext = priv.e820ext;
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e820ext_size = priv.e820ext_size;
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/* Historic? */
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boot_params->alt_mem_k = 32 * 1024;
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boot_params->alt_mem_k = 32 * 1024;
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status = setup_e820(boot_params, e820ext, e820ext_size);
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if (status != EFI_SUCCESS)
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@ -908,8 +910,8 @@ static efi_status_t exit_boot(struct boot_params *boot_params,
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* On success we return a pointer to a boot_params structure, and NULL
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* on failure.
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*/
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struct boot_params *efi_main(struct efi_config *c,
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struct boot_params *boot_params)
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struct boot_params *
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efi_main(struct efi_config *c, struct boot_params *boot_params)
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{
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struct desc_ptr *gdt = NULL;
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efi_loaded_image_t *image;
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@ -957,7 +959,7 @@ struct boot_params *efi_main(struct efi_config *c,
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status = efi_call_early(allocate_pool, EFI_LOADER_DATA,
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sizeof(*gdt), (void **)&gdt);
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if (status != EFI_SUCCESS) {
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efi_printk(sys_table, "Failed to alloc mem for gdt structure\n");
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efi_printk(sys_table, "Failed to allocate memory for 'gdt' structure\n");
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goto fail;
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}
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@ -965,7 +967,7 @@ struct boot_params *efi_main(struct efi_config *c,
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status = efi_low_alloc(sys_table, gdt->size, 8,
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(unsigned long *)&gdt->address);
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if (status != EFI_SUCCESS) {
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efi_printk(sys_table, "Failed to alloc mem for gdt\n");
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efi_printk(sys_table, "Failed to allocate memory for 'gdt'\n");
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goto fail;
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}
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@ -1002,19 +1004,20 @@ struct boot_params *efi_main(struct efi_config *c,
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if (IS_ENABLED(CONFIG_X86_64)) {
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/* __KERNEL32_CS */
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desc->limit0 = 0xffff;
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desc->base0 = 0x0000;
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desc->base1 = 0x0000;
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desc->type = SEG_TYPE_CODE | SEG_TYPE_EXEC_READ;
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desc->s = DESC_TYPE_CODE_DATA;
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desc->dpl = 0;
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desc->p = 1;
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desc->limit1 = 0xf;
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desc->avl = 0;
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desc->l = 0;
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desc->d = SEG_OP_SIZE_32BIT;
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desc->g = SEG_GRANULARITY_4KB;
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desc->base2 = 0x00;
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desc->limit0 = 0xffff;
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desc->base0 = 0x0000;
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desc->base1 = 0x0000;
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desc->type = SEG_TYPE_CODE | SEG_TYPE_EXEC_READ;
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desc->s = DESC_TYPE_CODE_DATA;
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desc->dpl = 0;
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desc->p = 1;
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desc->limit1 = 0xf;
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desc->avl = 0;
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desc->l = 0;
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desc->d = SEG_OP_SIZE_32BIT;
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desc->g = SEG_GRANULARITY_4KB;
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desc->base2 = 0x00;
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desc++;
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} else {
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/* Second entry is unused on 32-bit */
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@ -1022,15 +1025,16 @@ struct boot_params *efi_main(struct efi_config *c,
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}
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/* __KERNEL_CS */
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desc->limit0 = 0xffff;
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desc->base0 = 0x0000;
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desc->base1 = 0x0000;
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desc->type = SEG_TYPE_CODE | SEG_TYPE_EXEC_READ;
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desc->s = DESC_TYPE_CODE_DATA;
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desc->dpl = 0;
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desc->p = 1;
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desc->limit1 = 0xf;
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desc->avl = 0;
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desc->limit0 = 0xffff;
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desc->base0 = 0x0000;
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desc->base1 = 0x0000;
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desc->type = SEG_TYPE_CODE | SEG_TYPE_EXEC_READ;
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desc->s = DESC_TYPE_CODE_DATA;
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desc->dpl = 0;
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desc->p = 1;
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desc->limit1 = 0xf;
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desc->avl = 0;
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if (IS_ENABLED(CONFIG_X86_64)) {
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desc->l = 1;
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desc->d = 0;
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||||
|
@ -1038,41 +1042,41 @@ struct boot_params *efi_main(struct efi_config *c,
|
|||
desc->l = 0;
|
||||
desc->d = SEG_OP_SIZE_32BIT;
|
||||
}
|
||||
desc->g = SEG_GRANULARITY_4KB;
|
||||
desc->base2 = 0x00;
|
||||
desc->g = SEG_GRANULARITY_4KB;
|
||||
desc->base2 = 0x00;
|
||||
desc++;
|
||||
|
||||
/* __KERNEL_DS */
|
||||
desc->limit0 = 0xffff;
|
||||
desc->base0 = 0x0000;
|
||||
desc->base1 = 0x0000;
|
||||
desc->type = SEG_TYPE_DATA | SEG_TYPE_READ_WRITE;
|
||||
desc->s = DESC_TYPE_CODE_DATA;
|
||||
desc->dpl = 0;
|
||||
desc->p = 1;
|
||||
desc->limit1 = 0xf;
|
||||
desc->avl = 0;
|
||||
desc->l = 0;
|
||||
desc->d = SEG_OP_SIZE_32BIT;
|
||||
desc->g = SEG_GRANULARITY_4KB;
|
||||
desc->base2 = 0x00;
|
||||
desc->limit0 = 0xffff;
|
||||
desc->base0 = 0x0000;
|
||||
desc->base1 = 0x0000;
|
||||
desc->type = SEG_TYPE_DATA | SEG_TYPE_READ_WRITE;
|
||||
desc->s = DESC_TYPE_CODE_DATA;
|
||||
desc->dpl = 0;
|
||||
desc->p = 1;
|
||||
desc->limit1 = 0xf;
|
||||
desc->avl = 0;
|
||||
desc->l = 0;
|
||||
desc->d = SEG_OP_SIZE_32BIT;
|
||||
desc->g = SEG_GRANULARITY_4KB;
|
||||
desc->base2 = 0x00;
|
||||
desc++;
|
||||
|
||||
if (IS_ENABLED(CONFIG_X86_64)) {
|
||||
/* Task segment value */
|
||||
desc->limit0 = 0x0000;
|
||||
desc->base0 = 0x0000;
|
||||
desc->base1 = 0x0000;
|
||||
desc->type = SEG_TYPE_TSS;
|
||||
desc->s = 0;
|
||||
desc->dpl = 0;
|
||||
desc->p = 1;
|
||||
desc->limit1 = 0x0;
|
||||
desc->avl = 0;
|
||||
desc->l = 0;
|
||||
desc->d = 0;
|
||||
desc->g = SEG_GRANULARITY_4KB;
|
||||
desc->base2 = 0x00;
|
||||
desc->limit0 = 0x0000;
|
||||
desc->base0 = 0x0000;
|
||||
desc->base1 = 0x0000;
|
||||
desc->type = SEG_TYPE_TSS;
|
||||
desc->s = 0;
|
||||
desc->dpl = 0;
|
||||
desc->p = 1;
|
||||
desc->limit1 = 0x0;
|
||||
desc->avl = 0;
|
||||
desc->l = 0;
|
||||
desc->d = 0;
|
||||
desc->g = SEG_GRANULARITY_4KB;
|
||||
desc->base2 = 0x00;
|
||||
desc++;
|
||||
}
|
||||
|
||||
|
@ -1082,5 +1086,6 @@ struct boot_params *efi_main(struct efi_config *c,
|
|||
return boot_params;
|
||||
fail:
|
||||
efi_printk(sys_table, "efi_main() failed!\n");
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue