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x86/efi: Build our own EFI services pointer table

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It's not possible to dereference the EFI System table directly when
booting a 64-bit kernel on a 32-bit EFI firmware because the size of
pointers don't match.

In preparation for supporting the above use case, build a list of
function pointers on boot so that callers don't have to worry about
converting pointer sizes through multiple levels of indirection.

Signed-off-by: Matt Fleming <matt.fleming@intel.com>
This commit is contained in:
Matt Fleming 2014-01-10 15:27:14 +00:00
parent 677703cef0
commit 54b52d8726
5 changed files with 378 additions and 212 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

293
arch/x86/boot/compressed/eboot.c
View File

@ -19,11 +19,146 @@
static efi_system_table_t *sys_table;
static struct efi_config *efi_early;
#define BOOT_SERVICES(bits) \
static void setup_boot_services##bits(struct efi_config *c) \
{ \
efi_system_table_##bits##_t *table; \
efi_boot_services_##bits##_t *bt; \
\
table = (typeof(table))sys_table; \
\
c->text_output = table->con_out; \
\
bt = (typeof(bt))(unsigned long)(table->boottime); \
\
c->allocate_pool = bt->allocate_pool; \
c->allocate_pages = bt->allocate_pages; \
c->get_memory_map = bt->get_memory_map; \
c->free_pool = bt->free_pool; \
c->free_pages = bt->free_pages; \
c->locate_handle = bt->locate_handle; \
c->handle_protocol = bt->handle_protocol; \
c->exit_boot_services = bt->exit_boot_services; \
}
BOOT_SERVICES(32);
BOOT_SERVICES(64);
static void efi_printk(efi_system_table_t *, char *);
static void efi_char16_printk(efi_system_table_t *, efi_char16_t *);
static efi_status_t
efi_file_size(efi_system_table_t *sys_table, void *__fh,
efi_char16_t *filename_16, void **handle, u64 *file_sz)
{
efi_file_handle_t *h, *fh = __fh;
efi_file_info_t *info;
efi_status_t status;
efi_guid_t info_guid = EFI_FILE_INFO_ID;
u32 info_sz;
status = efi_early->call((unsigned long)fh->open, fh, &h, filename_16,
EFI_FILE_MODE_READ, (u64)0);
if (status != EFI_SUCCESS) {
efi_printk(sys_table, "Failed to open file: ");
efi_char16_printk(sys_table, filename_16);
efi_printk(sys_table, "\n");
return status;
}
*handle = h;
info_sz = 0;
status = efi_early->call((unsigned long)h->get_info, h, &info_guid,
&info_sz, NULL);
if (status != EFI_BUFFER_TOO_SMALL) {
efi_printk(sys_table, "Failed to get file info size\n");
return status;
}
grow:
status = efi_early->call(efi_early->allocate_pool, EFI_LOADER_DATA,
info_sz, (void **)&info);
if (status != EFI_SUCCESS) {
efi_printk(sys_table, "Failed to alloc mem for file info\n");
return status;
}
status = efi_early->call((unsigned long)h->get_info, h, &info_guid,
&info_sz, info);
if (status == EFI_BUFFER_TOO_SMALL) {
efi_early->call(efi_early->free_pool, info);
goto grow;
}
*file_sz = info->file_size;
efi_early->call(efi_early->free_pool, info);
if (status != EFI_SUCCESS)
efi_printk(sys_table, "Failed to get initrd info\n");
return status;
}
static inline efi_status_t
efi_file_read(void *__fh, void *handle, unsigned long *size, void *addr)
{
efi_file_handle_t *fh = __fh;
return efi_early->call((unsigned long)fh->read, handle, size, addr);
}
static inline efi_status_t efi_file_close(void *__fh, void *handle)
{
efi_file_handle_t *fh = __fh;
return efi_early->call((unsigned long)fh->close, handle);
}
static inline efi_status_t
efi_open_volume(efi_system_table_t *sys_table, void *__image, void **__fh)
{
efi_file_io_interface_t *io;
efi_loaded_image_t *image = __image;
efi_file_handle_t *fh;
efi_guid_t fs_proto = EFI_FILE_SYSTEM_GUID;
efi_status_t status;
void *handle = (void *)(unsigned long)image->device_handle;
u32 func;
status = efi_early->call(efi_early->handle_protocol, handle,
&fs_proto, (void **)&io);
if (status != EFI_SUCCESS) {
efi_printk(sys_table, "Failed to handle fs_proto\n");
return status;
}
func = (unsigned long)io->open_volume;
status = efi_early->call(func, io, &fh);
if (status != EFI_SUCCESS)
efi_printk(sys_table, "Failed to open volume\n");
*__fh = fh;
return status;
}
static inline void
efi_char16_printk(efi_system_table_t *table, efi_char16_t *str)
{
struct efi_simple_text_output_protocol *out;
unsigned long output_string;
size_t offset;
unsigned long *func;
offset = offsetof(typeof(*out), output_string);
output_string = efi_early->text_output + offset;
func = (unsigned long *)output_string;
efi_early->call(*func, efi_early->text_output, str);
}
#include "../../../../drivers/firmware/efi/efi-stub-helper.c"
static void find_bits(unsigned long mask, u8 *pos, u8 *size)
{
u8 first, len;
@ -51,7 +186,7 @@ static efi_status_t setup_efi_pci(struct boot_params *params)
{
efi_pci_io_protocol *pci;
efi_status_t status;
void **pci_handle;
void **pci_handle = NULL;
efi_guid_t pci_proto = EFI_PCI_IO_PROTOCOL_GUID;
unsigned long nr_pci, size = 0;
int i;
@ -62,18 +197,19 @@ static efi_status_t setup_efi_pci(struct boot_params *params)
while (data && data->next)
data = (struct setup_data *)(unsigned long)data->next;
status = efi_call_phys5(sys_table->boottime->locate_handle,
EFI_LOCATE_BY_PROTOCOL, &pci_proto,
NULL, &size, pci_handle);
status = efi_early->call(efi_early->locate_handle,
EFI_LOCATE_BY_PROTOCOL,
&pci_proto, NULL, &size, pci_handle);
if (status == EFI_BUFFER_TOO_SMALL) {
status = efi_call_phys3(sys_table->boottime->allocate_pool,
EFI_LOADER_DATA, size, &pci_handle);
status = efi_early->call(efi_early->allocate_pool,
EFI_LOADER_DATA,
size, (void **)&pci_handle);
if (status != EFI_SUCCESS)
return status;
status = efi_call_phys5(sys_table->boottime->locate_handle,
status = efi_early->call(efi_early->locate_handle,
EFI_LOCATE_BY_PROTOCOL, &pci_proto,
NULL, &size, pci_handle);
}
@ -87,8 +223,8 @@ static efi_status_t setup_efi_pci(struct boot_params *params)
uint64_t attributes;
struct pci_setup_rom *rom;
status = efi_call_phys3(sys_table->boottime->handle_protocol,
h, &pci_proto, &pci);
status = efi_early->call(efi_early->handle_protocol, h,
&pci_proto, (void **)&pci);
if (status != EFI_SUCCESS)
continue;
@ -97,11 +233,11 @@ static efi_status_t setup_efi_pci(struct boot_params *params)
continue;
#ifdef CONFIG_X86_64
status = efi_call_phys4(pci->attributes, pci,
status = efi_early->call((unsigned long)pci->attributes, pci,
EfiPciIoAttributeOperationGet, 0,
&attributes);
#else
status = efi_call_phys5(pci->attributes, pci,
status = efi_early->call((unsigned long)pci->attributes, pci,
EfiPciIoAttributeOperationGet, 0, 0,
&attributes);
#endif
@ -113,7 +249,7 @@ static efi_status_t setup_efi_pci(struct boot_params *params)
size = pci->romsize + sizeof(*rom);
status = efi_call_phys3(sys_table->boottime->allocate_pool,
status = efi_early->call(efi_early->allocate_pool,
EFI_LOADER_DATA, size, &rom);
if (status != EFI_SUCCESS)
@ -124,21 +260,21 @@ static efi_status_t setup_efi_pci(struct boot_params *params)
rom->data.next = 0;
rom->pcilen = pci->romsize;
status = efi_call_phys5(pci->pci.read, pci,
status = efi_early->call((unsigned long)pci->pci.read, pci,
EfiPciIoWidthUint16, PCI_VENDOR_ID,
1, &(rom->vendor));
if (status != EFI_SUCCESS)
goto free_struct;
status = efi_call_phys5(pci->pci.read, pci,
status = efi_early->call((unsigned long)pci->pci.read, pci,
EfiPciIoWidthUint16, PCI_DEVICE_ID,
1, &(rom->devid));
if (status != EFI_SUCCESS)
goto free_struct;
status = efi_call_phys5(pci->get_location, pci,
status = efi_early->call((unsigned long)pci->get_location, pci,
&(rom->segment), &(rom->bus),
&(rom->device), &(rom->function));
@ -156,11 +292,11 @@ static efi_status_t setup_efi_pci(struct boot_params *params)
continue;
free_struct:
efi_call_phys1(sys_table->boottime->free_pool, rom);
efi_early->call(efi_early->free_pool, rom);
}
free_handle:
efi_call_phys1(sys_table->boottime->free_pool, pci_handle);
efi_early->call(efi_early->free_pool, pci_handle);
return status;
}
@ -174,21 +310,21 @@ static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto,
struct efi_pixel_bitmask pixel_info;
unsigned long nr_gops;
efi_status_t status;
void **gop_handle;
void **gop_handle = NULL;
u16 width, height;
u32 fb_base, fb_size;
u32 pixels_per_scan_line;
int pixel_format;
int i;
status = efi_call_phys3(sys_table->boottime->allocate_pool,
EFI_LOADER_DATA, size, &gop_handle);
status = efi_early->call(efi_early->allocate_pool, EFI_LOADER_DATA,
size, (void **)&gop_handle);
if (status != EFI_SUCCESS)
return status;
status = efi_call_phys5(sys_table->boottime->locate_handle,
EFI_LOCATE_BY_PROTOCOL, proto,
NULL, &size, gop_handle);
status = efi_early->call(efi_early->locate_handle,
EFI_LOCATE_BY_PROTOCOL,
proto, NULL, &size, gop_handle);
if (status != EFI_SUCCESS)
goto free_handle;
@ -202,18 +338,17 @@ static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto,
void *dummy;
void *h = gop_handle[i];
status = efi_call_phys3(sys_table->boottime->handle_protocol,
h, proto, &gop);
status = efi_early->call(efi_early->handle_protocol, h,
proto, (void **)&gop);
if (status != EFI_SUCCESS)
continue;
status = efi_call_phys3(sys_table->boottime->handle_protocol,
h, &conout_proto, &dummy);
status = efi_early->call(efi_early->handle_protocol, h,
&conout_proto, &dummy);
if (status == EFI_SUCCESS)
conout_found = true;
status = efi_call_phys4(gop->query_mode, gop,
status = efi_early->call((unsigned long)gop->query_mode, gop,
gop->mode->mode, &size, &info);
if (status == EFI_SUCCESS && (!first_gop || conout_found)) {
/*
@ -303,7 +438,7 @@ static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto,
si->capabilities |= VIDEO_CAPABILITY_SKIP_QUIRKS;
free_handle:
efi_call_phys1(sys_table->boottime->free_pool, gop_handle);
efi_early->call(efi_early->free_pool, gop_handle);
return status;
}
@ -320,14 +455,14 @@ static efi_status_t setup_uga(struct screen_info *si, efi_guid_t *uga_proto,
void **uga_handle = NULL;
int i;
status = efi_call_phys3(sys_table->boottime->allocate_pool,
EFI_LOADER_DATA, size, &uga_handle);
status = efi_early->call(efi_early->allocate_pool, EFI_LOADER_DATA,
size, (void **)&uga_handle);
if (status != EFI_SUCCESS)
return status;
status = efi_call_phys5(sys_table->boottime->locate_handle,
EFI_LOCATE_BY_PROTOCOL, uga_proto,
NULL, &size, uga_handle);
status = efi_early->call(efi_early->locate_handle,
EFI_LOCATE_BY_PROTOCOL,
uga_proto, NULL, &size, uga_handle);
if (status != EFI_SUCCESS)
goto free_handle;
@ -340,16 +475,16 @@ static efi_status_t setup_uga(struct screen_info *si, efi_guid_t *uga_proto,
u32 w, h, depth, refresh;
void *pciio;
status = efi_call_phys3(sys_table->boottime->handle_protocol,
handle, uga_proto, &uga);
status = efi_early->call(efi_early->handle_protocol, handle,
uga_proto, (void **)&uga);
if (status != EFI_SUCCESS)
continue;
efi_call_phys3(sys_table->boottime->handle_protocol,
handle, &pciio_proto, &pciio);
efi_early->call(efi_early->handle_protocol, handle,
&pciio_proto, &pciio);
status = efi_call_phys5(uga->get_mode, uga, &w, &h,
&depth, &refresh);
status = efi_early->call((unsigned long)uga->get_mode, uga,
&w, &h, &depth, &refresh);
if (status == EFI_SUCCESS && (!first_uga || pciio)) {
width = w;
height = h;
@ -386,7 +521,7 @@ static efi_status_t setup_uga(struct screen_info *si, efi_guid_t *uga_proto,
free_handle:
efi_call_phys1(sys_table->boottime->free_pool, uga_handle);
efi_early->call(efi_early->free_pool, uga_handle);
return status;
}
@ -404,29 +539,28 @@ void setup_graphics(struct boot_params *boot_params)
memset(si, 0, sizeof(*si));
size = 0;
status = efi_call_phys5(sys_table->boottime->locate_handle,
EFI_LOCATE_BY_PROTOCOL, &graphics_proto,
NULL, &size, gop_handle);
status = efi_early->call(efi_early->locate_handle,
EFI_LOCATE_BY_PROTOCOL,
&graphics_proto, NULL, &size, gop_handle);
if (status == EFI_BUFFER_TOO_SMALL)
status = setup_gop(si, &graphics_proto, size);
if (status != EFI_SUCCESS) {
size = 0;
status = efi_call_phys5(sys_table->boottime->locate_handle,
EFI_LOCATE_BY_PROTOCOL, &uga_proto,
NULL, &size, uga_handle);
status = efi_early->call(efi_early->locate_handle,
EFI_LOCATE_BY_PROTOCOL,
&uga_proto, NULL, &size, uga_handle);
if (status == EFI_BUFFER_TOO_SMALL)
setup_uga(si, &uga_proto, size);
}
}
/*
* Because the x86 boot code expects to be passed a boot_params we
* need to create one ourselves (usually the bootloader would create
* one for us).
*/
struct boot_params *make_boot_params(void *handle, efi_system_table_t *_table)
struct boot_params *make_boot_params(struct efi_config *c)
{
struct boot_params *boot_params;
struct sys_desc_table *sdt;
@ -434,7 +568,7 @@ struct boot_params *make_boot_params(void *handle, efi_system_table_t *_table)
struct setup_header *hdr;
struct efi_info *efi;
efi_loaded_image_t *image;
void *options;
void *options, *handle;
efi_guid_t proto = LOADED_IMAGE_PROTOCOL_GUID;
int options_size = 0;
efi_status_t status;
@ -445,14 +579,21 @@ struct boot_params *make_boot_params(void *handle, efi_system_table_t *_table)
unsigned long ramdisk_addr;
unsigned long ramdisk_size;
sys_table = _table;
efi_early = c;
sys_table = (efi_system_table_t *)(unsigned long)efi_early->table;
handle = (void *)(unsigned long)efi_early->image_handle;
/* Check if we were booted by the EFI firmware */
if (sys_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE)
return NULL;
status = efi_call_phys3(sys_table->boottime->handle_protocol,
handle, &proto, (void *)&image);
if (efi_early->is64)
setup_boot_services64(efi_early);
else
setup_boot_services32(efi_early);
status = efi_early->call(efi_early->handle_protocol, handle,
&proto, (void *)&image);
if (status != EFI_SUCCESS) {
efi_printk(sys_table, "Failed to get handle for LOADED_IMAGE_PROTOCOL\n");
return NULL;
@ -641,14 +782,13 @@ static efi_status_t alloc_e820ext(u32 nr_desc, struct setup_data **e820ext,
sizeof(struct e820entry) * nr_desc;
if (*e820ext) {
efi_call_phys1(sys_table->boottime->free_pool, *e820ext);
efi_early->call(efi_early->free_pool, *e820ext);
*e820ext = NULL;
*e820ext_size = 0;
}
status = efi_call_phys3(sys_table->boottime->allocate_pool,
EFI_LOADER_DATA, size, e820ext);
status = efi_early->call(efi_early->allocate_pool, EFI_LOADER_DATA,
size, (void **)e820ext);
if (status == EFI_SUCCESS)
*e820ext_size = size;
@ -691,7 +831,7 @@ get_map:
if (status != EFI_SUCCESS)
goto free_mem_map;
efi_call_phys1(sys_table->boottime->free_pool, mem_map);
efi_early->call(efi_early->free_pool, mem_map);
goto get_map; /* Allocated memory, get map again */
}
@ -708,8 +848,7 @@ get_map:
#endif
/* Might as well exit boot services now */
status = efi_call_phys2(sys_table->boottime->exit_boot_services,
handle, key);
status = efi_early->call(efi_early->exit_boot_services, handle, key);
if (status != EFI_SUCCESS) {
/*
* ExitBootServices() will fail if any of the event
@ -722,7 +861,7 @@ get_map:
goto free_mem_map;
called_exit = true;
efi_call_phys1(sys_table->boottime->free_pool, mem_map);
efi_early->call(efi_early->free_pool, mem_map);
goto get_map;
}
@ -736,23 +875,31 @@ get_map:
return EFI_SUCCESS;
free_mem_map:
efi_call_phys1(sys_table->boottime->free_pool, mem_map);
efi_early->call(efi_early->free_pool, mem_map);
return status;
}
/*
* On success we return a pointer to a boot_params structure, and NULL
* on failure.
*/
struct boot_params *efi_main(void *handle, efi_system_table_t *_table,
struct boot_params *efi_main(struct efi_config *c,
struct boot_params *boot_params)
{
struct desc_ptr *gdt;
struct desc_ptr *gdt = NULL;
efi_loaded_image_t *image;
struct setup_header *hdr = &boot_params->hdr;
efi_status_t status;
struct desc_struct *desc;
void *handle;
efi_system_table_t *_table;
bool is64;
efi_early = c;
_table = (efi_system_table_t *)(unsigned long)efi_early->table;
handle = (void *)(unsigned long)efi_early->image_handle;
is64 = efi_early->is64;
sys_table = _table;
@ -760,13 +907,17 @@ struct boot_params *efi_main(void *handle, efi_system_table_t *_table,
if (sys_table->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE)
goto fail;
if (is64)
setup_boot_services64(efi_early);
else
setup_boot_services32(efi_early);
setup_graphics(boot_params);
setup_efi_pci(boot_params);
status = efi_call_phys3(sys_table->boottime->allocate_pool,
EFI_LOADER_DATA, sizeof(*gdt),
(void **)&gdt);
status = efi_early->call(efi_early->allocate_pool, EFI_LOADER_DATA,
sizeof(*gdt), (void **)&gdt);
if (status != EFI_SUCCESS) {
efi_printk(sys_table, "Failed to alloc mem for gdt structure\n");
goto fail;

16
arch/x86/boot/compressed/eboot.h
View File

@ -103,4 +103,20 @@ struct efi_uga_draw_protocol {
void *blt;
};
struct efi_config {
u64 image_handle;
u64 table;
u64 allocate_pool;
u64 allocate_pages;
u64 get_memory_map;
u64 free_pool;
u64 free_pages;
u64 locate_handle;
u64 handle_protocol;
u64 exit_boot_services;
u64 text_output;
efi_status_t (*call)(unsigned long, ...);
bool is64;
} __packed;
#endif /* BOOT_COMPRESSED_EBOOT_H */

48
arch/x86/boot/compressed/head_32.S
View File

@ -42,26 +42,53 @@ ENTRY(startup_32)
ENTRY(efi_pe_entry)
add $0x4, %esp
call 1f
1: popl %esi
subl $1b, %esi
popl %ecx
movl %ecx, efi32_config(%esi) /* Handle */
popl %ecx
movl %ecx, efi32_config+8(%esi) /* EFI System table pointer */
/* Relocate efi_config->call() */
leal efi32_config(%esi), %eax
add %esi, 88(%eax)
pushl %eax
call make_boot_params
cmpl $0, %eax
je 1f
movl 0x4(%esp), %esi
movl (%esp), %ecx
je fail
popl %ecx
pushl %eax
pushl %esi
pushl %ecx
sub $0x4, %esp
jmp 2f /* Skip efi_config initialization */
ENTRY(efi_stub_entry)
add $0x4, %esp
popl %ecx
popl %edx
call 1f
1: popl %esi
subl $1b, %esi
movl %ecx, efi32_config(%esi) /* Handle */
movl %edx, efi32_config+8(%esi) /* EFI System table pointer */
/* Relocate efi_config->call() */
leal efi32_config(%esi), %eax
add %esi, 88(%eax)
pushl %eax
2:
call efi_main
cmpl $0, %eax
movl %eax, %esi
jne 2f
1:
fail:
/* EFI init failed, so hang. */
hlt
jmp 1b
jmp fail
2:
call 3f
3:
@ -202,6 +229,13 @@ relocated:
xorl %ebx, %ebx
jmp *%eax
.data
efi32_config:
.fill 11,8,0
.long efi_call_phys
.long 0
.byte 0
/*
* Stack and heap for uncompression
*/

57
arch/x86/boot/compressed/head_64.S
View File

@ -209,26 +209,55 @@ ENTRY(startup_64)
jmp preferred_addr
ENTRY(efi_pe_entry)
mov %rcx, %rdi
mov %rdx, %rsi
pushq %rdi
pushq %rsi
movq %rcx, efi64_config(%rip) /* Handle */
movq %rdx, efi64_config+8(%rip) /* EFI System table pointer */
leaq efi64_config(%rip), %rax
movq %rax, efi_config(%rip)
call 1f
1: popq %rbp
subq $1b, %rbp
/*
* Relocate efi_config->call().
*/
addq %rbp, efi64_config+88(%rip)
movq %rax, %rdi
call make_boot_params
cmpq $0,%rax
je 1f
mov %rax, %rdx
popq %rsi
popq %rdi
je fail
mov %rax, %rsi
jmp 2f /* Skip the relocation */
ENTRY(efi_stub_entry)
movq %rdi, efi64_config(%rip) /* Handle */
movq %rsi, efi64_config+8(%rip) /* EFI System table pointer */
leaq efi64_config(%rip), %rax
movq %rax, efi_config(%rip)
call 1f
1: popq %rbp
subq $1b, %rbp
/*
* Relocate efi_config->call().
*/
movq efi_config(%rip), %rax
addq %rbp, 88(%rax)
movq %rdx, %rsi
2:
movq efi_config(%rip), %rdi
call efi_main
movq %rax,%rsi
cmpq $0,%rax
jne 2f
1:
fail:
/* EFI init failed, so hang. */
hlt
jmp 1b
jmp fail
2:
call 3f
3:
@ -372,6 +401,14 @@ gdt:
.quad 0x0000000000000000 /* TS continued */
gdt_end:
efi_config:
.quad 0
.global efi64_config
efi64_config:
.fill 11,8,0
.quad efi_call6
.byte 1
/*
* Stack and heap for uncompression
*/

132
drivers/firmware/efi/efi-stub-helper.c
View File

@ -16,18 +16,6 @@ struct file_info {
u64 size;
};
static void efi_char16_printk(efi_system_table_t *sys_table_arg,
efi_char16_t *str)
{
struct efi_simple_text_output_protocol *out;
out = (struct efi_simple_text_output_protocol *)sys_table_arg->con_out;
efi_call_phys2(out->output_string, out, str);
}
static void efi_printk(efi_system_table_t *sys_table_arg, char *str)
{
char *s8;
@ -65,20 +53,23 @@ again:
* allocation which may be in a new descriptor region.
*/
*map_size += sizeof(*m);
status = efi_call_phys3(sys_table_arg->boottime->allocate_pool,
EFI_LOADER_DATA, *map_size, (void **)&m);
status = efi_early->call(efi_early->allocate_pool, EFI_LOADER_DATA,
*map_size, (void **)&m);
if (status != EFI_SUCCESS)
goto fail;
status = efi_call_phys5(sys_table_arg->boottime->get_memory_map,
map_size, m, &key, desc_size, &desc_version);
*desc_size = 0;
key = 0;
status = efi_early->call(efi_early->get_memory_map, map_size, m,
&key, desc_size, &desc_version);
if (status == EFI_BUFFER_TOO_SMALL) {
efi_call_phys1(sys_table_arg->boottime->free_pool, m);
efi_early->call(efi_early->free_pool, m);
goto again;
}
if (status != EFI_SUCCESS)
efi_call_phys1(sys_table_arg->boottime->free_pool, m);
efi_early->call(efi_early->free_pool, m);
if (key_ptr && status == EFI_SUCCESS)
*key_ptr = key;
if (desc_ver && status == EFI_SUCCESS)
@ -158,7 +149,7 @@ again:
if (!max_addr)
status = EFI_NOT_FOUND;
else {
status = efi_call_phys4(sys_table_arg->boottime->allocate_pages,
status = efi_early->call(efi_early->allocate_pages,
EFI_ALLOCATE_ADDRESS, EFI_LOADER_DATA,
nr_pages, &max_addr);
if (status != EFI_SUCCESS) {
@ -170,8 +161,7 @@ again:
*addr = max_addr;
}
efi_call_phys1(sys_table_arg->boottime->free_pool, map);
efi_early->call(efi_early->free_pool, map);
fail:
return status;
}
@ -231,7 +221,7 @@ static efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg,
if ((start + size) > end)
continue;
status = efi_call_phys4(sys_table_arg->boottime->allocate_pages,
status = efi_early->call(efi_early->allocate_pages,
EFI_ALLOCATE_ADDRESS, EFI_LOADER_DATA,
nr_pages, &start);
if (status == EFI_SUCCESS) {
@ -243,7 +233,7 @@ static efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg,
if (i == map_size / desc_size)
status = EFI_NOT_FOUND;
efi_call_phys1(sys_table_arg->boottime->free_pool, map);
efi_early->call(efi_early->free_pool, map);
fail:
return status;
}
@ -257,7 +247,7 @@ static void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,
return;
nr_pages = round_up(size, EFI_PAGE_SIZE) / EFI_PAGE_SIZE;
efi_call_phys2(sys_table_arg->boottime->free_pages, addr, nr_pages);
efi_early->call(efi_early->free_pages, addr, nr_pages);
}
@ -276,9 +266,7 @@ static efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
{
struct file_info *files;
unsigned long file_addr;
efi_guid_t fs_proto = EFI_FILE_SYSTEM_GUID;
u64 file_size_total;
efi_file_io_interface_t *io;
efi_file_handle_t *fh;
efi_status_t status;
int nr_files;
@ -319,10 +307,8 @@ static efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
if (!nr_files)
return EFI_SUCCESS;
status = efi_call_phys3(sys_table_arg->boottime->allocate_pool,
EFI_LOADER_DATA,
nr_files * sizeof(*files),
(void **)&files);
status = efi_early->call(efi_early->allocate_pool, EFI_LOADER_DATA,
nr_files * sizeof(*files), (void **)&files);
if (status != EFI_SUCCESS) {
efi_printk(sys_table_arg, "Failed to alloc mem for file handle list\n");
goto fail;
@ -331,13 +317,8 @@ static efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
str = cmd_line;
for (i = 0; i < nr_files; i++) {
struct file_info *file;
efi_file_handle_t *h;
efi_file_info_t *info;
efi_char16_t filename_16[256];
unsigned long info_sz;
efi_guid_t info_guid = EFI_FILE_INFO_ID;
efi_char16_t *p;
u64 file_sz;
str = strstr(str, option_string);
if (!str)
@ -368,71 +349,18 @@ static efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
/* Only open the volume once. */
if (!i) {
efi_boot_services_t *boottime;
boottime = sys_table_arg->boottime;
status = efi_call_phys3(boottime->handle_protocol,
image->device_handle, &fs_proto,
(void **)&io);
if (status != EFI_SUCCESS) {
efi_printk(sys_table_arg, "Failed to handle fs_proto\n");
status = efi_open_volume(sys_table_arg, image,
(void **)&fh);
if (status != EFI_SUCCESS)
goto free_files;
}
status = efi_call_phys2(io->open_volume, io, &fh);
if (status != EFI_SUCCESS) {
efi_printk(sys_table_arg, "Failed to open volume\n");
goto free_files;
}
}
status = efi_call_phys5(fh->open, fh, &h, filename_16,
EFI_FILE_MODE_READ, (u64)0);
if (status != EFI_SUCCESS) {
efi_printk(sys_table_arg, "Failed to open file: ");
efi_char16_printk(sys_table_arg, filename_16);
efi_printk(sys_table_arg, "\n");
status = efi_file_size(sys_table_arg, fh, filename_16,
(void **)&file->handle, &file->size);
if (status != EFI_SUCCESS)
goto close_handles;
}
file->handle = h;
info_sz = 0;
status = efi_call_phys4(h->get_info, h, &info_guid,
&info_sz, NULL);
if (status != EFI_BUFFER_TOO_SMALL) {
efi_printk(sys_table_arg, "Failed to get file info size\n");
goto close_handles;
}
grow:
status = efi_call_phys3(sys_table_arg->boottime->allocate_pool,
EFI_LOADER_DATA, info_sz,
(void **)&info);
if (status != EFI_SUCCESS) {
efi_printk(sys_table_arg, "Failed to alloc mem for file info\n");
goto close_handles;
}
status = efi_call_phys4(h->get_info, h, &info_guid,
&info_sz, info);
if (status == EFI_BUFFER_TOO_SMALL) {
efi_call_phys1(sys_table_arg->boottime->free_pool,
info);
goto grow;
}
file_sz = info->file_size;
efi_call_phys1(sys_table_arg->boottime->free_pool, info);
if (status != EFI_SUCCESS) {
efi_printk(sys_table_arg, "Failed to get file info\n");
goto close_handles;
}
file->size = file_sz;
file_size_total += file_sz;
file_size_total += file->size;
}
if (file_size_total) {
@ -468,8 +396,8 @@ grow:
chunksize = EFI_READ_CHUNK_SIZE;
else
chunksize = size;
status = efi_call_phys3(fh->read,
files[j].handle,
status = efi_file_read(fh, files[j].handle,
&chunksize,
(void *)addr);
if (status != EFI_SUCCESS) {
@ -480,12 +408,12 @@ grow:
size -= chunksize;
}
efi_call_phys1(fh->close, files[j].handle);
efi_file_close(fh, files[j].handle);
}
}
efi_call_phys1(sys_table_arg->boottime->free_pool, files);
efi_early->call(efi_early->free_pool, files);
*load_addr = file_addr;
*load_size = file_size_total;
@ -497,9 +425,9 @@ free_file_total:
close_handles:
for (k = j; k < i; k++)
efi_call_phys1(fh->close, files[k].handle);
efi_file_close(fh, files[k].handle);
free_files:
efi_call_phys1(sys_table_arg->boottime->free_pool, files);
efi_early->call(efi_early->free_pool, files);
fail:
*load_addr = 0;
*load_size = 0;
@ -545,7 +473,7 @@ static efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg,
* as possible while respecting the required alignment.
*/
nr_pages = round_up(alloc_size, EFI_PAGE_SIZE) / EFI_PAGE_SIZE;
status = efi_call_phys4(sys_table_arg->boottime->allocate_pages,
status = efi_early->call(efi_early->allocate_pages,
EFI_ALLOCATE_ADDRESS, EFI_LOADER_DATA,
nr_pages, &efi_addr);
new_addr = efi_addr;