xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge tag 'efi-changes-for-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/core

Browse Source 
More EFI changes for v5.8:

 - Rename pr_efi/pr_efi_err to efi_info/efi_err, and use them consistently
 - Simplify and unify initrd loading
 - Parse the builtin command line on x86 (if provided)
 - Implement printk() support, including support for wide character strings
 - Some fixes for issues introduced by the first batch of v5.8 changes
 - Fix a missing prototypes warning
 - Simplify GDT handling in early mixed mode thunking code
 - Some other minor fixes and cleanups

Conflicts:
	drivers/firmware/efi/libstub/efistub.h

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar
2020-05-25 15:11:14 +02:00
parent a5d8e55b2c 9241dfe7f2
commit d1343da330
24 changed files with 1214 additions and 316 deletions
Download Patch File Download Diff File Expand all files Collapse all files

124
drivers/firmware/efi/libstub/x86-stub.c
View File

@@ -22,6 +22,7 @@
const efi_system_table_t *efi_system_table;
extern u32 image_offset;
static efi_loaded_image_t *image = NULL;
static efi_status_t
preserve_pci_rom_image(efi_pci_io_protocol_t *pci, struct pci_setup_rom **__rom)
@@ -49,7 +50,7 @@ preserve_pci_rom_image(efi_pci_io_protocol_t *pci, struct pci_setup_rom **__rom)
status = efi_bs_call(allocate_pool, EFI_LOADER_DATA, size,
(void **)&rom);
if (status != EFI_SUCCESS) {
efi_printk("Failed to allocate memory for 'rom'\n");
efi_err("Failed to allocate memory for 'rom'\n");
return status;
}
@@ -65,7 +66,7 @@ preserve_pci_rom_image(efi_pci_io_protocol_t *pci, struct pci_setup_rom **__rom)
PCI_VENDOR_ID, 1, &rom->vendor);
if (status != EFI_SUCCESS) {
efi_printk("Failed to read rom->vendor\n");
efi_err("Failed to read rom->vendor\n");
goto free_struct;
}
@@ -73,7 +74,7 @@ preserve_pci_rom_image(efi_pci_io_protocol_t *pci, struct pci_setup_rom **__rom)
PCI_DEVICE_ID, 1, &rom->devid);
if (status != EFI_SUCCESS) {
efi_printk("Failed to read rom->devid\n");
efi_err("Failed to read rom->devid\n");
goto free_struct;
}
@@ -118,7 +119,7 @@ static void setup_efi_pci(struct boot_params *params)
(void **)&pci_handle);
if (status != EFI_SUCCESS) {
efi_printk("Failed to allocate memory for 'pci_handle'\n");
efi_err("Failed to allocate memory for 'pci_handle'\n");
return;
}
@@ -172,7 +173,7 @@ static void retrieve_apple_device_properties(struct boot_params *boot_params)
return;
if (efi_table_attr(p, version) != 0x10000) {
efi_printk("Unsupported properties proto version\n");
efi_err("Unsupported properties proto version\n");
return;
}
@@ -185,7 +186,7 @@ static void retrieve_apple_device_properties(struct boot_params *boot_params)
size + sizeof(struct setup_data),
(void **)&new);
if (status != EFI_SUCCESS) {
efi_printk("Failed to allocate memory for 'properties'\n");
efi_err("Failed to allocate memory for 'properties'\n");
return;
}
@@ -355,7 +356,6 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
{
struct boot_params *boot_params;
struct setup_header *hdr;
efi_loaded_image_t *image;
void *image_base;
efi_guid_t proto = LOADED_IMAGE_PROTOCOL_GUID;
int options_size = 0;
@@ -372,20 +372,21 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
status = efi_bs_call(handle_protocol, handle, &proto, (void **)&image);
if (status != EFI_SUCCESS) {
efi_printk("Failed to get handle for LOADED_IMAGE_PROTOCOL\n");
efi_err("Failed to get handle for LOADED_IMAGE_PROTOCOL\n");
efi_exit(handle, status);
}
image_base = efi_table_attr(image, image_base);
image_offset = (void *)startup_32 - image_base;
status = efi_allocate_pages(0x4000, (unsigned long *)&boot_params, ULONG_MAX);
status = efi_allocate_pages(sizeof(struct boot_params),
(unsigned long *)&boot_params, ULONG_MAX);
if (status != EFI_SUCCESS) {
efi_printk("Failed to allocate lowmem for boot params\n");
efi_err("Failed to allocate lowmem for boot params\n");
efi_exit(handle, status);
}
memset(boot_params, 0x0, 0x4000);
memset(boot_params, 0x0, sizeof(struct boot_params));
hdr = &boot_params->hdr;
@@ -403,43 +404,21 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
hdr->type_of_loader = 0x21;
/* Convert unicode cmdline to ascii */
cmdline_ptr = efi_convert_cmdline(image, &options_size, ULONG_MAX);
cmdline_ptr = efi_convert_cmdline(image, &options_size);
if (!cmdline_ptr)
goto fail;
hdr->cmd_line_ptr = (unsigned long)cmdline_ptr;
/* Fill in upper bits of command line address, NOP on 32 bit */
boot_params->ext_cmd_line_ptr = (u64)(unsigned long)cmdline_ptr >> 32;
efi_set_u64_split((unsigned long)cmdline_ptr,
&hdr->cmd_line_ptr, &boot_params->ext_cmd_line_ptr);
hdr->ramdisk_image = 0;
hdr->ramdisk_size = 0;
if (efi_is_native()) {
status = efi_parse_options(cmdline_ptr);
if (status != EFI_SUCCESS)
goto fail2;
if (!efi_noinitrd) {
status = efi_load_initrd(image, &ramdisk_addr,
&ramdisk_size,
hdr->initrd_addr_max,
ULONG_MAX);
if (status != EFI_SUCCESS)
goto fail2;
hdr->ramdisk_image = ramdisk_addr & 0xffffffff;
hdr->ramdisk_size = ramdisk_size & 0xffffffff;
boot_params->ext_ramdisk_image = (u64)ramdisk_addr >> 32;
boot_params->ext_ramdisk_size = (u64)ramdisk_size >> 32;
}
}
efi_stub_entry(handle, sys_table_arg, boot_params);
/* not reached */
fail2:
efi_free(options_size, (unsigned long)cmdline_ptr);
fail:
efi_free(0x4000, (unsigned long)boot_params);
efi_free(sizeof(struct boot_params), (unsigned long)boot_params);
efi_exit(handle, status);
}
@@ -632,17 +611,14 @@ static efi_status_t exit_boot_func(struct efi_boot_memmap *map,
: EFI32_LOADER_SIGNATURE;
memcpy(&p->efi->efi_loader_signature, signature, sizeof(__u32));
p->efi->efi_systab = (unsigned long)efi_system_table;
efi_set_u64_split((unsigned long)efi_system_table,
&p->efi->efi_systab, &p->efi->efi_systab_hi);
p->efi->efi_memdesc_size = *map->desc_size;
p->efi->efi_memdesc_version = *map->desc_ver;
p->efi->efi_memmap = (unsigned long)*map->map;
efi_set_u64_split((unsigned long)*map->map,
&p->efi->efi_memmap, &p->efi->efi_memmap_hi);
p->efi->efi_memmap_size = *map->map_size;
#ifdef CONFIG_X86_64
p->efi->efi_systab_hi = (unsigned long)efi_system_table >> 32;
p->efi->efi_memmap_hi = (unsigned long)*map->map >> 32;
#endif
return EFI_SUCCESS;
}
@@ -698,7 +674,6 @@ unsigned long efi_main(efi_handle_t handle,
unsigned long buffer_start, buffer_end;
struct setup_header *hdr = &boot_params->hdr;
efi_status_t status;
unsigned long cmdline_paddr;
efi_system_table = sys_table_arg;
@@ -746,7 +721,7 @@ unsigned long efi_main(efi_handle_t handle,
hdr->kernel_alignment,
LOAD_PHYSICAL_ADDR);
if (status != EFI_SUCCESS) {
efi_printk("efi_relocate_kernel() failed!\n");
efi_err("efi_relocate_kernel() failed!\n");
goto fail;
}
/*
@@ -757,35 +732,46 @@ unsigned long efi_main(efi_handle_t handle,
image_offset = 0;
}
/*
* efi_pe_entry() may have been called before efi_main(), in which
* case this is the second time we parse the cmdline. This is ok,
* parsing the cmdline multiple times does not have side-effects.
*/
cmdline_paddr = ((u64)hdr->cmd_line_ptr |
((u64)boot_params->ext_cmd_line_ptr << 32));
efi_parse_options((char *)cmdline_paddr);
#ifdef CONFIG_CMDLINE_BOOL
status = efi_parse_options(CONFIG_CMDLINE);
if (status != EFI_SUCCESS) {
efi_err("Failed to parse options\n");
goto fail;
}
#endif
if (!IS_ENABLED(CONFIG_CMDLINE_OVERRIDE)) {
unsigned long cmdline_paddr = ((u64)hdr->cmd_line_ptr |
((u64)boot_params->ext_cmd_line_ptr << 32));
status = efi_parse_options((char *)cmdline_paddr);
if (status != EFI_SUCCESS) {
efi_err("Failed to parse options\n");
goto fail;
}
}
/*
* At this point, an initrd may already have been loaded, either by
* the bootloader and passed via bootparams, or loaded from a initrd=
* command line option by efi_pe_entry() above. In either case, we
* permit an initrd loaded from the LINUX_EFI_INITRD_MEDIA_GUID device
* path to supersede it.
* At this point, an initrd may already have been loaded by the
* bootloader and passed via bootparams. We permit an initrd loaded
* from the LINUX_EFI_INITRD_MEDIA_GUID device path to supersede it.
*
* If the device path is not present, any command-line initrd=
* arguments will be processed only if image is not NULL, which will be
* the case only if we were loaded via the PE entry point.
*/
if (!efi_noinitrd) {
unsigned long addr, size;
status = efi_load_initrd_dev_path(&addr, &size, ULONG_MAX);
if (status == EFI_SUCCESS) {
hdr->ramdisk_image = (u32)addr;
hdr->ramdisk_size = (u32)size;
boot_params->ext_ramdisk_image = (u64)addr >> 32;
boot_params->ext_ramdisk_size = (u64)size >> 32;
} else if (status != EFI_NOT_FOUND) {
efi_printk("efi_load_initrd_dev_path() failed!\n");
status = efi_load_initrd(image, &addr, &size,
hdr->initrd_addr_max, ULONG_MAX);
if (status != EFI_SUCCESS) {
efi_err("Failed to load initrd!\n");
goto fail;
}
efi_set_u64_split(addr, &hdr->ramdisk_image,
&boot_params->ext_ramdisk_image);
efi_set_u64_split(size, &hdr->ramdisk_size,
&boot_params->ext_ramdisk_size);
}
/*
@@ -810,13 +796,13 @@ unsigned long efi_main(efi_handle_t handle,
status = exit_boot(boot_params, handle);
if (status != EFI_SUCCESS) {
efi_printk("exit_boot() failed!\n");
efi_err("exit_boot() failed!\n");
goto fail;
}
return bzimage_addr;
fail:
efi_printk("efi_main() failed!\n");
efi_err("efi_main() failed!\n");
efi_exit(handle, status);
}