@@ -30,13 +30,13 @@ __efi_get_rsdp_addr(unsigned long cfg_tbl_pa, unsigned int cfg_tbl_len)
* Search EFI system tables for RSDP. Preferred is ACPI_20_TABLE_GUID to
* ACPI_TABLE_GUID because it has more features.
*/
- rsdp_addr = efi_find_vendor_table(boot_params, cfg_tbl_pa, cfg_tbl_len,
+ rsdp_addr = efi_find_vendor_table(boot_params_ptr, cfg_tbl_pa, cfg_tbl_len,
ACPI_20_TABLE_GUID);
if (rsdp_addr)
return (acpi_physical_address)rsdp_addr;
/* No ACPI_20_TABLE_GUID found, fallback to ACPI_TABLE_GUID. */
- rsdp_addr = efi_find_vendor_table(boot_params, cfg_tbl_pa, cfg_tbl_len,
+ rsdp_addr = efi_find_vendor_table(boot_params_ptr, cfg_tbl_pa, cfg_tbl_len,
ACPI_TABLE_GUID);
if (rsdp_addr)
return (acpi_physical_address)rsdp_addr;
@@ -56,15 +56,15 @@ static acpi_physical_address efi_get_rsdp_addr(void)
enum efi_type et;
int ret;
- et = efi_get_type(boot_params);
+ et = efi_get_type(boot_params_ptr);
if (et == EFI_TYPE_NONE)
return 0;
- systab_pa = efi_get_system_table(boot_params);
+ systab_pa = efi_get_system_table(boot_params_ptr);
if (!systab_pa)
error("EFI support advertised, but unable to locate system table.");
- ret = efi_get_conf_table(boot_params, &cfg_tbl_pa, &cfg_tbl_len);
+ ret = efi_get_conf_table(boot_params_ptr, &cfg_tbl_pa, &cfg_tbl_len);
if (ret || !cfg_tbl_pa)
error("EFI config table not found.");
@@ -156,7 +156,7 @@ acpi_physical_address get_rsdp_addr(void)
{
acpi_physical_address pa;
- pa = boot_params->acpi_rsdp_addr;
+ pa = boot_params_ptr->acpi_rsdp_addr;
if (!pa)
pa = efi_get_rsdp_addr();
@@ -210,7 +210,7 @@ static unsigned long get_acpi_srat_table(void)
rsdp = (struct acpi_table_rsdp *)get_cmdline_acpi_rsdp();
if (!rsdp)
rsdp = (struct acpi_table_rsdp *)(long)
- boot_params->acpi_rsdp_addr;
+ boot_params_ptr->acpi_rsdp_addr;
if (!rsdp)
return 0;
@@ -14,9 +14,9 @@ static inline char rdfs8(addr_t addr)
#include "../cmdline.c"
unsigned long get_cmd_line_ptr(void)
{
- unsigned long cmd_line_ptr = boot_params->hdr.cmd_line_ptr;
+ unsigned long cmd_line_ptr = boot_params_ptr->hdr.cmd_line_ptr;
- cmd_line_ptr |= (u64)boot_params->ext_cmd_line_ptr << 32;
+ cmd_line_ptr |= (u64)boot_params_ptr->ext_cmd_line_ptr << 32;
return cmd_line_ptr;
}
@@ -167,8 +167,9 @@ void initialize_identity_maps(void *rmode)
* or does not touch all the pages covering them.
*/
kernel_add_identity_map((unsigned long)_head, (unsigned long)_end);
- boot_params = rmode;
- kernel_add_identity_map((unsigned long)boot_params, (unsigned long)(boot_params + 1));
+ boot_params_ptr = rmode;
+ kernel_add_identity_map((unsigned long)boot_params_ptr,
+ (unsigned long)(boot_params_ptr + 1));
cmdline = get_cmd_line_ptr();
kernel_add_identity_map(cmdline, cmdline + COMMAND_LINE_SIZE);
@@ -176,7 +177,7 @@ void initialize_identity_maps(void *rmode)
* Also map the setup_data entries passed via boot_params in case they
* need to be accessed by uncompressed kernel via the identity mapping.
*/
- sd = (struct setup_data *)boot_params->hdr.setup_data;
+ sd = (struct setup_data *)boot_params_ptr->hdr.setup_data;
while (sd) {
unsigned long sd_addr = (unsigned long)sd;
@@ -63,7 +63,7 @@ static unsigned long get_boot_seed(void)
unsigned long hash = 0;
hash = rotate_xor(hash, build_str, sizeof(build_str));
- hash = rotate_xor(hash, boot_params, sizeof(*boot_params));
+ hash = rotate_xor(hash, boot_params_ptr, sizeof(*boot_params_ptr));
return hash;
}
@@ -383,7 +383,7 @@ static void handle_mem_options(void)
static void mem_avoid_init(unsigned long input, unsigned long input_size,
unsigned long output)
{
- unsigned long init_size = boot_params->hdr.init_size;
+ unsigned long init_size = boot_params_ptr->hdr.init_size;
u64 initrd_start, initrd_size;
unsigned long cmd_line, cmd_line_size;
@@ -395,10 +395,10 @@ static void mem_avoid_init(unsigned long input, unsigned long input_size,
mem_avoid[MEM_AVOID_ZO_RANGE].size = (output + init_size) - input;
/* Avoid initrd. */
- initrd_start = (u64)boot_params->ext_ramdisk_image << 32;
- initrd_start |= boot_params->hdr.ramdisk_image;
- initrd_size = (u64)boot_params->ext_ramdisk_size << 32;
- initrd_size |= boot_params->hdr.ramdisk_size;
+ initrd_start = (u64)boot_params_ptr->ext_ramdisk_image << 32;
+ initrd_start |= boot_params_ptr->hdr.ramdisk_image;
+ initrd_size = (u64)boot_params_ptr->ext_ramdisk_size << 32;
+ initrd_size |= boot_params_ptr->hdr.ramdisk_size;
mem_avoid[MEM_AVOID_INITRD].start = initrd_start;
mem_avoid[MEM_AVOID_INITRD].size = initrd_size;
/* No need to set mapping for initrd, it will be handled in VO. */
@@ -413,8 +413,8 @@ static void mem_avoid_init(unsigned long input, unsigned long input_size,
}
/* Avoid boot parameters. */
- mem_avoid[MEM_AVOID_BOOTPARAMS].start = (unsigned long)boot_params;
- mem_avoid[MEM_AVOID_BOOTPARAMS].size = sizeof(*boot_params);
+ mem_avoid[MEM_AVOID_BOOTPARAMS].start = (unsigned long)boot_params_ptr;
+ mem_avoid[MEM_AVOID_BOOTPARAMS].size = sizeof(*boot_params_ptr);
/* We don't need to set a mapping for setup_data. */
@@ -447,7 +447,7 @@ static bool mem_avoid_overlap(struct mem_vector *img,
}
/* Avoid all entries in the setup_data linked list. */
- ptr = (struct setup_data *)(unsigned long)boot_params->hdr.setup_data;
+ ptr = (struct setup_data *)(unsigned long)boot_params_ptr->hdr.setup_data;
while (ptr) {
struct mem_vector avoid;
@@ -679,7 +679,7 @@ static bool process_mem_region(struct mem_vector *region,
static bool
process_efi_entries(unsigned long minimum, unsigned long image_size)
{
- struct efi_info *e = &boot_params->efi_info;
+ struct efi_info *e = &boot_params_ptr->efi_info;
bool efi_mirror_found = false;
struct mem_vector region;
efi_memory_desc_t *md;
@@ -761,8 +761,8 @@ static void process_e820_entries(unsigned long minimum,
struct boot_e820_entry *entry;
/* Verify potential e820 positions, appending to slots list. */
- for (i = 0; i < boot_params->e820_entries; i++) {
- entry = &boot_params->e820_table[i];
+ for (i = 0; i < boot_params_ptr->e820_entries; i++) {
+ entry = &boot_params_ptr->e820_table[i];
/* Skip non-RAM entries. */
if (entry->type != E820_TYPE_RAM)
continue;
@@ -836,7 +836,7 @@ void choose_random_location(unsigned long input,
return;
}
- boot_params->hdr.loadflags |= KASLR_FLAG;
+ boot_params_ptr->hdr.loadflags |= KASLR_FLAG;
if (IS_ENABLED(CONFIG_X86_32))
mem_limit = KERNEL_IMAGE_SIZE;
@@ -46,7 +46,7 @@ void *memmove(void *dest, const void *src, size_t n);
/*
* This is set up by the setup-routine at boot-time
*/
-struct boot_params *boot_params;
+struct boot_params *boot_params_ptr;
struct port_io_ops pio_ops;
@@ -132,8 +132,8 @@ void __putstr(const char *s)
if (lines == 0 || cols == 0)
return;
- x = boot_params->screen_info.orig_x;
- y = boot_params->screen_info.orig_y;
+ x = boot_params_ptr->screen_info.orig_x;
+ y = boot_params_ptr->screen_info.orig_y;
while ((c = *s++) != '\0') {
if (c == '\n') {
@@ -154,8 +154,8 @@ void __putstr(const char *s)
}
}
- boot_params->screen_info.orig_x = x;
- boot_params->screen_info.orig_y = y;
+ boot_params_ptr->screen_info.orig_x = x;
+ boot_params_ptr->screen_info.orig_y = y;
pos = (x + cols * y) * 2; /* Update cursor position */
outb(14, vidport);
@@ -382,14 +382,14 @@ asmlinkage __visible void *extract_kernel(void *rmode, unsigned char *output)
size_t entry_offset;
/* Retain x86 boot parameters pointer passed from startup_32/64. */
- boot_params = rmode;
+ boot_params_ptr = rmode;
/* Clear flags intended for solely in-kernel use. */
- boot_params->hdr.loadflags &= ~KASLR_FLAG;
+ boot_params_ptr->hdr.loadflags &= ~KASLR_FLAG;
- sanitize_boot_params(boot_params);
+ sanitize_boot_params(boot_params_ptr);
- if (boot_params->screen_info.orig_video_mode == 7) {
+ if (boot_params_ptr->screen_info.orig_video_mode == 7) {
vidmem = (char *) 0xb0000;
vidport = 0x3b4;
} else {
@@ -397,8 +397,8 @@ asmlinkage __visible void *extract_kernel(void *rmode, unsigned char *output)
vidport = 0x3d4;
}
- lines = boot_params->screen_info.orig_video_lines;
- cols = boot_params->screen_info.orig_video_cols;
+ lines = boot_params_ptr->screen_info.orig_video_lines;
+ cols = boot_params_ptr->screen_info.orig_video_cols;
init_default_io_ops();
@@ -417,7 +417,7 @@ asmlinkage __visible void *extract_kernel(void *rmode, unsigned char *output)
* so that early debugging output from the RSDP parsing code can be
* collected.
*/
- boot_params->acpi_rsdp_addr = get_rsdp_addr();
+ boot_params_ptr->acpi_rsdp_addr = get_rsdp_addr();
debug_putstr("early console in extract_kernel\n");
@@ -52,7 +52,6 @@ extern memptr free_mem_ptr;
extern memptr free_mem_end_ptr;
void *malloc(int size);
void free(void *where);
-extern struct boot_params *boot_params;
void __putstr(const char *s);
void __puthex(unsigned long value);
#define error_putstr(__x) __putstr(__x)
@@ -28,7 +28,6 @@ static char trampoline_save[TRAMPOLINE_32BIT_SIZE];
*/
unsigned long *trampoline_32bit __section(".data");
-extern struct boot_params *boot_params;
int cmdline_find_option_bool(const char *option);
static unsigned long find_trampoline_placement(void)
@@ -49,7 +48,7 @@ static unsigned long find_trampoline_placement(void)
*
* Only look for values in the legacy ROM for non-EFI system.
*/
- signature = (char *)&boot_params->efi_info.efi_loader_signature;
+ signature = (char *)&boot_params_ptr->efi_info.efi_loader_signature;
if (strncmp(signature, EFI32_LOADER_SIGNATURE, 4) &&
strncmp(signature, EFI64_LOADER_SIGNATURE, 4)) {
ebda_start = *(unsigned short *)0x40e << 4;
@@ -65,10 +64,10 @@ static unsigned long find_trampoline_placement(void)
bios_start = round_down(bios_start, PAGE_SIZE);
/* Find the first usable memory region under bios_start. */
- for (i = boot_params->e820_entries - 1; i >= 0; i--) {
+ for (i = boot_params_ptr->e820_entries - 1; i >= 0; i--) {
unsigned long new = bios_start;
- entry = &boot_params->e820_table[i];
+ entry = &boot_params_ptr->e820_table[i];
/* Skip all entries above bios_start. */
if (bios_start <= entry->addr)
@@ -107,7 +106,7 @@ asmlinkage void configure_5level_paging(struct boot_params *bp, void *pgtable)
bool l5_required = false;
/* Initialize boot_params. Required for cmdline_find_option_bool(). */
- boot_params = bp;
+ boot_params_ptr = bp;
/*
* Check if LA57 is desired and supported.
@@ -565,7 +565,7 @@ void sev_prep_identity_maps(unsigned long top_level_pgt)
* accessed after switchover.
*/
if (sev_snp_enabled()) {
- unsigned long cc_info_pa = boot_params->cc_blob_address;
+ unsigned long cc_info_pa = boot_params_ptr->cc_blob_address;
struct cc_blob_sev_info *cc_info;
kernel_add_identity_map(cc_info_pa, cc_info_pa + sizeof(*cc_info));
@@ -85,6 +85,8 @@ extern const unsigned long kernel_total_size;
unsigned long decompress_kernel(unsigned char *outbuf, unsigned long virt_addr,
void (*error)(char *x));
+
+extern struct boot_params *boot_params_ptr;
#endif
#endif /* _ASM_X86_BOOT_H */