diff options
Diffstat (limited to 'util/mkelfImage/linux-i386/convert_params.c')
| -rw-r--r-- | util/mkelfImage/linux-i386/convert_params.c | 1568 |
1 files changed, 0 insertions, 1568 deletions
diff --git a/util/mkelfImage/linux-i386/convert_params.c b/util/mkelfImage/linux-i386/convert_params.c deleted file mode 100644 index f39e8e027c..0000000000 --- a/util/mkelfImage/linux-i386/convert_params.c +++ /dev/null @@ -1,1568 +0,0 @@ -#include <stdarg.h> -#include <limits.h> -#include "arch/io.h" -#include "stdint.h" -#include "uniform_boot.h" -#include "linuxbios_tables.h" -#include "elf_boot.h" -#include "convert.h" -#define STACK_SIZE (4096) - -#define __unused __attribute__ ((unused)) - -long user_stack [STACK_SIZE] = { 0 }; - -unsigned long * stack_start = & user_stack[STACK_SIZE]; - -/* FIXME expand on drive_info_)struct... */ -struct drive_info_struct { - uint8_t dummy[32]; -}; -struct sys_desc_table { - uint16_t length; - uint8_t table[318]; -}; - -/* - * These are set up by the setup-routine at boot-time: - */ - -struct screen_info { - uint8_t orig_x; /* 0x00 */ - uint8_t orig_y; /* 0x01 */ - uint16_t dontuse1; /* 0x02 -- EXT_MEM_K sits here */ - uint16_t orig_video_page; /* 0x04 */ - uint8_t orig_video_mode; /* 0x06 */ - uint8_t orig_video_cols; /* 0x07 */ - uint16_t unused2; /* 0x08 */ - uint16_t orig_video_ega_bx; /* 0x0a */ - uint16_t unused3; /* 0x0c */ - uint8_t orig_video_lines; /* 0x0e */ - uint8_t orig_video_isVGA; /* 0x0f */ - uint16_t orig_video_points; /* 0x10 */ - - /* VESA graphic mode -- linear frame buffer */ - uint16_t lfb_width; /* 0x12 */ - uint16_t lfb_height; /* 0x14 */ - uint16_t lfb_depth; /* 0x16 */ - uint32_t lfb_base; /* 0x18 */ - uint32_t lfb_size; /* 0x1c */ - uint16_t dontuse2, dontuse3; /* 0x20 -- CL_MAGIC and CL_OFFSET here */ - uint16_t lfb_linelength; /* 0x24 */ - uint8_t red_size; /* 0x26 */ - uint8_t red_pos; /* 0x27 */ - uint8_t green_size; /* 0x28 */ - uint8_t green_pos; /* 0x29 */ - uint8_t blue_size; /* 0x2a */ - uint8_t blue_pos; /* 0x2b */ - uint8_t rsvd_size; /* 0x2c */ - uint8_t rsvd_pos; /* 0x2d */ - uint16_t vesapm_seg; /* 0x2e */ - uint16_t vesapm_off; /* 0x30 */ - uint16_t pages; /* 0x32 */ -}; - - -#define PAGE_SIZE 4096 - - -#define E820MAP 0x2d0 /* our map */ -#define E820MAX 32 /* number of entries in E820MAP */ -#define E820NR 0x1e8 /* # entries in E820MAP */ - - -struct e820entry { - unsigned long long addr; /* start of memory segment */ - unsigned long long size; /* size of memory segment */ - unsigned long type; /* type of memory segment */ -#define E820_RAM 1 -#define E820_RESERVED 2 -#define E820_ACPI 3 /* usable as RAM once ACPI tables have been read */ -#define E820_NVS 4 -}; - -struct e820map { - int nr_map; - struct e820entry map[E820MAX]; -}; - - -struct apm_bios_info { - uint16_t version; /* 0x40 */ - uint16_t cseg; /* 0x42 */ - uint32_t offset; /* 0x44 */ - uint16_t cseg_16; /* 0x48 */ - uint16_t dseg; /* 0x4a */ - uint16_t flags; /* 0x4c */ - uint16_t cseg_len; /* 0x4e */ - uint16_t cseg_16_len; /* 0x50 */ - uint16_t dseg_len; /* 0x52 */ - uint8_t reserved[44]; /* 0x54 */ -}; - - -struct parameters { - uint8_t orig_x; /* 0x00 */ - uint8_t orig_y; /* 0x01 */ - uint16_t ext_mem_k; /* 0x02 -- EXT_MEM_K sits here */ - uint16_t orig_video_page; /* 0x04 */ - uint8_t orig_video_mode; /* 0x06 */ - uint8_t orig_video_cols; /* 0x07 */ - uint16_t unused2; /* 0x08 */ - uint16_t orig_video_ega_bx; /* 0x0a */ - uint16_t unused3; /* 0x0c */ - uint8_t orig_video_lines; /* 0x0e */ - uint8_t orig_video_isVGA; /* 0x0f */ - uint16_t orig_video_points; /* 0x10 */ - - /* VESA graphic mode -- linear frame buffer */ - uint16_t lfb_width; /* 0x12 */ - uint16_t lfb_height; /* 0x14 */ - uint16_t lfb_depth; /* 0x16 */ - uint32_t lfb_base; /* 0x18 */ - uint32_t lfb_size; /* 0x1c */ - uint16_t cl_magic; /* 0x20 */ -#define CL_MAGIC_VALUE 0xA33F - uint16_t cl_offset; /* 0x22 */ - uint16_t lfb_linelength; /* 0x24 */ - uint8_t red_size; /* 0x26 */ - uint8_t red_pos; /* 0x27 */ - uint8_t green_size; /* 0x28 */ - uint8_t green_pos; /* 0x29 */ - uint8_t blue_size; /* 0x2a */ - uint8_t blue_pos; /* 0x2b */ - uint8_t rsvd_size; /* 0x2c */ - uint8_t rsvd_pos; /* 0x2d */ - uint16_t vesapm_seg; /* 0x2e */ - uint16_t vesapm_off; /* 0x30 */ - uint16_t pages; /* 0x32 */ - uint8_t reserved4[12]; /* 0x34 -- 0x3f reserved for future expansion */ - - struct apm_bios_info apm_bios_info; /* 0x40 */ - struct drive_info_struct drive_info; /* 0x80 */ - struct sys_desc_table sys_desc_table; /* 0xa0 */ - uint32_t alt_mem_k; /* 0x1e0 */ - uint8_t reserved5[4]; /* 0x1e4 */ - uint8_t e820_map_nr; /* 0x1e8 */ - uint8_t reserved6[9]; /* 0x1e9 */ - uint16_t mount_root_rdonly; /* 0x1f2 */ - uint8_t reserved7[4]; /* 0x1f4 */ - uint16_t ramdisk_flags; /* 0x1f8 */ -#define RAMDISK_IMAGE_START_MASK 0x07FF -#define RAMDISK_PROMPT_FLAG 0x8000 -#define RAMDISK_LOAD_FLAG 0x4000 - uint8_t reserved8[2]; /* 0x1fa */ - uint16_t orig_root_dev; /* 0x1fc */ - uint8_t reserved9[1]; /* 0x1fe */ - uint8_t aux_device_info; /* 0x1ff */ - uint8_t reserved10[2]; /* 0x200 */ - uint8_t param_block_signature[4]; /* 0x202 */ - uint16_t param_block_version; /* 0x206 */ - uint8_t reserved11[8]; /* 0x208 */ - uint8_t loader_type; /* 0x210 */ -#define LOADER_TYPE_LOADLIN 1 -#define LOADER_TYPE_BOOTSECT_LOADER 2 -#define LOADER_TYPE_SYSLINUX 3 -#define LOADER_TYPE_ETHERBOOT 4 -#define LOADER_TYPE_KERNEL 5 - uint8_t loader_flags; /* 0x211 */ - uint8_t reserved12[2]; /* 0x212 */ - uint32_t kernel_start; /* 0x214 */ - uint32_t initrd_start; /* 0x218 */ - uint32_t initrd_size; /* 0x21c */ - uint8_t reserved13[4]; /* 0x220 */ - /* 2.01+ */ - uint16_t heap_end_ptr; /* 0x224 */ - uint8_t reserved14[2]; /* 0x226 */ - /* 2.02+ */ - uint32_t cmd_line_ptr; /* 0x228 */ - /* 2.03+ */ - uint32_t initrd_addr_max; /* 0x22c */ - /* 2.05+ */ - uint32_t kernel_alignment; /* 0x230 */ - uint8_t relocateable_kernel; /* 0x234 */ - uint8_t reserved15[0x2d0 - 0x235]; /* 0x235 */ - - struct e820entry e820_map[E820MAX]; /* 0x2d0 */ - uint8_t reserved16[688]; /* 0x550 */ -#define COMMAND_LINE_SIZE 256 - uint8_t command_line[COMMAND_LINE_SIZE]; /* 0x800 */ - uint8_t reserved17[1792]; /* 0x900 - 0x1000 */ -}; - -/* Keep track of which information I need to acquire. */ -struct param_info { - unsigned type; - void *data; - Elf_Bhdr *param; - struct image_parameters *image; - struct parameters *real_mode; - /* bootloader type */ - int has_multiboot; - int has_uniform_boot; - int has_elf_boot; - /* firmware type */ - int has_pcbios; - int has_linuxbios; - struct lb_header *lb_table; - /* machine information needed */ - int need_mem_sizes; -}; -/* - * This is set up by the setup-routine at boot-time - */ - - -#undef memcmp -#undef memset -#undef memcpy -#define memzero(s, n) memset ((s), 0, (n)) - - -/* FIXME handle systems with large EBDA's */ -static struct parameters *faked_real_mode = (void *)REAL_MODE_DATA_LOC; - - - -/* - * Output - * ============================================================================= - */ - -/* Base Address */ -#define TTYS0 0x3f8 -#define TTYS0_LSR (TTYS0+0x05) -#define TTYS0_TBR (TTYS0+0x00) - -static void ttys0_tx_byte(unsigned byte) -{ - /* Wait until I can send a byte */ - while((inb(TTYS0_LSR) & 0x20) == 0) - ; - outb(byte, TTYS0_TBR); - /* Wait until the byte is transmitted */ - while(!(inb(TTYS0_LSR) & 0x40)) - ; -} -static void put_char_serial(int c) -{ - if (c == '\n') { - ttys0_tx_byte('\r'); - } - ttys0_tx_byte(c); -} - -static void putchar(int c) -{ -#if 0 - put_char_video(c); -#endif - put_char_serial(c); -} - -#define LONG_LONG_SHIFT ((int)((sizeof(unsigned long long)*CHAR_BIT) - 4)) -#define LONG_SHIFT ((int)((sizeof(unsigned long)*CHAR_BIT) - 4)) -#define INT_SHIFT ((int)((sizeof(unsigned int)*CHAR_BIT) - 4)) -#define SHRT_SHIFT ((int)((sizeof(unsigned short)*CHAR_BIT) - 4)) -#define CHAR_SHIFT ((int)((sizeof(unsigned char)*CHAR_BIT) - 4)) - -/************************************************************************** -PRINTF and friends - - Formats: - %x - 4 bytes int (8 hex digits, lower case) - %X - 4 bytes int (8 hex digits, upper case) - %lx - 8 bytes long (16 hex digits, lower case) - %lX - 8 bytes long (16 hex digits, upper case) - %hx - 2 bytes int (4 hex digits, lower case) - %hX - 2 bytes int (4 hex digits, upper case) - %hhx - 1 byte int (2 hex digits, lower case) - %hhX - 1 byte int (2 hex digits, upper case) - - optional # prefixes 0x or 0X - %d - decimal int - %c - char - %s - string - Note: width specification not supported -**************************************************************************/ -static void printf(const char *fmt, ...) -{ - va_list args; - char *p; - va_start(args, fmt); - for ( ; *fmt != '\0'; ++fmt) { - if (*fmt != '%') { - putchar(*fmt); - continue; - } - if (*++fmt == 's') { - for(p = va_arg(args, char *); *p != '\0'; p++) - putchar(*p); - } - else { /* Length of item is bounded */ - char tmp[40], *q = tmp; - int shift = INT_SHIFT; - if (*fmt == 'L') { - shift = LONG_LONG_SHIFT; - fmt++; - } - else if (*fmt == 'l') { - shift = LONG_SHIFT; - fmt++; - } - else if (*fmt == 'h') { - shift = SHRT_SHIFT; - fmt++; - if (*fmt == 'h') { - shift = CHAR_SHIFT; - fmt++; - } - } - - /* - * Before each format q points to tmp buffer - * After each format q points past end of item - */ - if ((*fmt | 0x20) == 'x') { - /* With x86 gcc, sizeof(long) == sizeof(int) */ - unsigned long long h; - int ncase; - if (shift > LONG_SHIFT) { - h = va_arg(args, unsigned long long); - } - else if (shift > INT_SHIFT) { - h = va_arg(args, unsigned long); - } else { - h = va_arg(args, unsigned int); - } - ncase = (*fmt & 0x20); - for ( ; shift >= 0; shift -= 4) - *q++ = "0123456789ABCDEF"[(h >> shift) & 0xF] | ncase; - } - else if (*fmt == 'd') { - char *r; - long i; - if (shift > LONG_SHIFT) { - i = va_arg(args, long long); - } - else if (shift > INT_SHIFT) { - i = va_arg(args, long); - } else { - i = va_arg(args, int); - } - if (i < 0) { - *q++ = '-'; - i = -i; - } - p = q; /* save beginning of digits */ - do { - *q++ = '0' + (i % 10); - i /= 10; - } while (i); - /* reverse digits, stop in middle */ - r = q; /* don't alter q */ - while (--r > p) { - i = *r; - *r = *p; - *p++ = i; - } - } - else if (*fmt == 'c') - *q++ = va_arg(args, int); - else - *q++ = *fmt; - /* now output the saved string */ - for (p = tmp; p < q; ++p) - putchar(*p); - } - } - va_end(args); -} - -/* - * String Functions - * ============================================================================= - */ - - -size_t strnlen(const char *s, size_t max) -{ - size_t len = 0; - while(len < max && *s) { - len++; - s++; - } - return len; -} - -void* memset(void* s, int c, size_t n) -{ - size_t i; - char *ss = (char*)s; - - for (i=0;i<n;i++) ss[i] = c; - return s; -} - -void* memcpy(void *dest, const void *src, size_t len) -{ - size_t i; - unsigned char *d; - const unsigned char *s; - d = dest; - s = src; - - for (i=0; i < len; i++) - d[i] = s[i]; - - return dest; -} - -int memcmp(void *src1, void *src2, size_t len) -{ - unsigned char *s1, *s2; - size_t i; - s1 = src1; - s2 = src2; - for(i = 0; i < len; i++) { - if (*s1 != *s2) { - return *s2 - *s1; - } - } - return 0; - -} - -/* - * Checksum functions - * ============================================================================= - */ - - -static unsigned long checksum_partial(unsigned long sum, - void *addr, unsigned long length) -{ - uint8_t *ptr; - volatile union { - uint8_t byte[2]; - uint16_t word; - } value; - unsigned long i; - /* In the most straight forward way possible, - * compute an ip style checksum. - */ - sum = 0; - ptr = addr; - for(i = 0; i < length; i++) { - unsigned long value; - value = ptr[i]; - if (i & 1) { - value <<= 8; - } - /* Add the new value */ - sum += value; - /* Wrap around the carry */ - if (sum > 0xFFFF) { - sum = (sum + (sum >> 16)) & 0xFFFF; - } - } - value.byte[0] = sum & 0xff; - value.byte[1] = (sum >> 8) & 0xff; - return value.word & 0xFFFF; - -} - -static unsigned long checksum_final(unsigned long partial) -{ - return (~partial) & 0xFFFF; -} - -static unsigned long compute_checksum(void *vaddr, unsigned long length) -{ - return checksum_final(checksum_partial(0, vaddr, length)); -} - -/* - * Helper functions - * ============================================================================= - */ - - -void append_command_line(struct parameters *real_mode, char *arg, int arg_bytes) -{ - int len, max; - char *dest; - /* skip over what has already been set */ - len = strnlen(real_mode->command_line, sizeof(real_mode->command_line)); - dest = real_mode->command_line + len; - max = sizeof(real_mode->command_line) - 1; - if (max < 1) { - /* No room to append anything :( */ - return; - } - /* Add a space in between strings */ - *dest++ = ' '; - /* Append the added command line */ - max = sizeof(real_mode->command_line) - 1; - if (max > arg_bytes) { - max = arg_bytes; - } - len = strnlen(arg, max); - memcpy(dest, arg, len); - dest += len; - /* Null terminate the string */ - *dest++ = '\0'; -} - -static void set_memsize_k(struct parameters *real_mode, unsigned long mem_k) -{ - /* ALT_MEM_K maxes out at 4GB */ - if (mem_k > 0x3fffff) { - mem_k = 0x3fffff; - } - if (mem_k > (real_mode->alt_mem_k + (1 << 10))) { - /* Use our memory size less 1M */ - real_mode->alt_mem_k = mem_k - (1 << 10); - real_mode->ext_mem_k = mem_k - (1 << 10); - if ((mem_k - (1 << 10)) > 0xFFFF) { - real_mode->ext_mem_k = 0xFC00; /* 64 M */ - } - } -} - -static void add_e820_map(struct parameters *real_mode, - unsigned long long addr, unsigned long long size, - unsigned long type) -{ - unsigned long long high; - unsigned long mem_k; - int i; - i = real_mode->e820_map_nr; - if (i < E820MAX) { - real_mode->e820_map[i].addr = addr; - real_mode->e820_map[i].size = size; - real_mode->e820_map[i].type = type; - real_mode->e820_map_nr++; - } - /* policy I assume that for the legacy memory - * variables memory is contiguous. - */ - if (type == E820_RAM) { - high = addr + size; - if (high >= 0x40000000000ULL) { - mem_k = 0xFFFFFFFF; - } else { - mem_k = high >> 10; - } - set_memsize_k(real_mode, mem_k); - } -} - -/* - * Multiboot - * ============================================================================= - */ - -#define MULTI_MEM_DEBUG 0 -#if MULTI_MEM_DEBUG -#define multi_puts(x) printf("%s", x) -#define multi_put_hex(x) printf("%x", x) -#define multi_put_lhex(x) printf("%Lx", x) -#else -#define multi_puts(x) -#define multi_put_hex(x) -#define multi_put_lhex(x) -#endif /* MULTI_MEM_DEBUG */ - -/* Multiboot Specification */ -struct multiboot_mods { - unsigned mod_start; - unsigned mod_end; - unsigned char *string; - unsigned reserved; -}; - -struct memory_segment { - unsigned long long addr; - unsigned long long size; - unsigned type; -}; - -struct multiboot_info { - unsigned flags; -#define MULTIBOOT_MEM_VALID 0x01 -#define MULTIBOOT_BOOT_DEV_VALID 0x02 -#define MULTIBOOT_CMDLINE_VALID 0x04 -#define MULTIBOOT_MODS_VALID 0x08 -#define MULTIBOOT_AOUT_SYMS_VALID 0x10 -#define MULTIBOOT_ELF_SYMS_VALID 0x20 -#define MULTIBOOT_MMAP_VALID 0x40 - unsigned mem_lower; - unsigned mem_upper; - unsigned char boot_device[4]; - void *command_line; - unsigned mods_count; - struct multiboot_mods *mods_addr; - unsigned syms_num; - unsigned syms_size; - unsigned syms_addr; - unsigned syms_shndx; - unsigned mmap_length; - struct memory_segment *mmap_addr; -}; - -#define MULTIBOOT_MAX_COMMAND_LINE 0xFFFFFFFF - -static void convert_multiboot_memmap( - struct parameters *real_mode, - struct multiboot_info *info) -{ - unsigned size; - unsigned *size_addr; -#define next_seg(seg, size) ((struct memory_segment *)((char *)(seg) + (size))) - struct memory_segment *seg, *end; - - seg = info->mmap_addr; - end = (void *)(((char *)seg) + info->mmap_length); - size_addr = (unsigned *)(((char *)seg) - 4); - size = *size_addr; - multi_puts("mmap_addr: "); multi_put_hex((unsigned)info->mmap_addr); multi_puts("\n"); - multi_puts("mmap_length: "); multi_put_hex(info->mmap_length); multi_puts("\n"); - multi_puts("size_addr: "); multi_put_hex((unsigned)size_addr); multi_puts("\n"); - multi_puts("size: "); multi_put_hex(size); multi_puts("\n"); - multi_puts("end: "); multi_put_hex((unsigned)end); multi_puts("\n"); - for(seg = info->mmap_addr; (seg < end); seg = next_seg(seg,size)) { - multi_puts("multi-mem: "); - multi_put_lhex(seg->size); - multi_puts(" @ "); - multi_put_lhex(seg->addr); - multi_puts(" ("); - switch(seg->type) { - case E820_RAM: - multi_puts("ram"); - break; - case E820_ACPI: - multi_puts("ACPI data"); - break; - case E820_NVS: - multi_puts("ACPI NVS"); - break; - case E820_RESERVED: - default: - multi_puts("reserved"); - break; - } - multi_puts(")\n"); - add_e820_map(real_mode, seg->addr, seg->size, seg->type); - } -#undef next_seg -} - -static void convert_multiboot( - struct param_info *info, struct multiboot_info *mb_info) -{ - if (info->need_mem_sizes && (mb_info->flags & MULTIBOOT_MEM_VALID)) { - /* info->memory is short 1M */ - set_memsize_k(info->real_mode, mb_info->mem_upper + (1 << 10)); - } - if (mb_info->flags & MULTIBOOT_CMDLINE_VALID) { - append_command_line(info->real_mode, mb_info->command_line, - MULTIBOOT_MAX_COMMAND_LINE); - } - if (info->need_mem_sizes && (mb_info->flags & MULTIBOOT_MMAP_VALID)) { - convert_multiboot_memmap(info->real_mode, mb_info); - } - if (mb_info->flags & (MULTIBOOT_MEM_VALID | MULTIBOOT_MMAP_VALID)) { - info->need_mem_sizes = 0; - } -} - - -/* - * Uniform Boot Environment - * ============================================================================= - */ - -#define UBE_MEM_DEBUG 0 -#if UBE_MEM_DEBUG -#define ube_puts(x) printf("%s", x) -#define ube_put_hex(x) printf("%x", x) -#define ube_put_lhex(x) printf("%Lx", x) -#else -#define ube_puts(x) -#define ube_put_hex(x) -#define ube_put_lhex(x) -#endif /* UBE_MEM_DEBUG */ -static void convert_uniform_boot_memory( - struct parameters *real_mode, struct ube_memory *mem) -{ - int i; - int entries; - unsigned long mem_k; - mem_k = 0; - entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]); - for(i = 0; (i < entries) && (i < E820MAX); i++) { - unsigned long type; - ube_puts("ube-mem: "); - ube_put_lhex(mem->map[i].size); - ube_puts(" @ "); - ube_put_lhex(mem->map[i].start); - ube_puts(" ("); - switch(mem->map[i].type) { - case UBE_MEM_RAM: - type = E820_RAM; - ube_puts("ram"); - break; - case UBE_MEM_ACPI: - type = E820_ACPI; - ube_puts("ACPI data"); - break; - case UBE_MEM_NVS: - type = E820_NVS; - ube_puts("ACPI NVS"); - break; - case UBE_MEM_RESERVED: - default: - type = E820_RESERVED; - ube_puts("reserved"); - break; - } - ube_puts(")\n"); - add_e820_map(real_mode, - mem->map[i].start, mem->map[i].size, type); - } -} - -static void convert_uniform_boot(struct param_info *info, - struct uniform_boot_header *header) -{ - /* Uniform boot environment */ - unsigned long env_bytes; - char *env; - if (header->arg_bytes) { - append_command_line(info->real_mode, (void *)(header->arg), header->arg_bytes); - } - env = (void *)(header->env); - env_bytes = header->env_bytes; - while(env_bytes) { - struct ube_record *record; - record = (void *)env; - if (record->tag == UBE_TAG_MEMORY) { - if (info->need_mem_sizes) { - convert_uniform_boot_memory(info->real_mode, (void *)record); - info->need_mem_sizes = 0; - } - } - env += record->size; - env_bytes -= record->size; - } -} - - - - -/* - * Hardware - * ============================================================================= - */ - -/* we're getting screwed again and again by this problem of the 8259. - * so we're going to leave this lying around for inclusion into - * crt0.S on an as-needed basis. - * well, that went ok, I hope. Now we have to reprogram the interrupts :-( - * we put them right after the intel-reserved hardware interrupts, at - * int 0x20-0x2F. There they won't mess up anything. Sadly IBM really - * messed this up with the original PC, and they haven't been able to - * rectify it afterwards. Thus the bios puts interrupts at 0x08-0x0f, - * which is used for the internal hardware interrupts as well. We just - * have to reprogram the 8259's, and it isn't fun. - */ - -static void setup_i8259(void) -{ - outb(0x11, 0x20); /*! initialization sequence to 8259A-1*/ - outb(0x11, 0xA0); /*! and to 8259A-2*/ - - outb(0x20, 0x21); /*! start of hardware int's (0x20)*/ - outb(0x28, 0xA1); /*! start of hardware int's 2 (0x28)*/ - - outb(0x04, 0x21); /*! 8259-1 is master*/ - outb(0x02, 0xA1); /*! 8259-2 is slave*/ - - outb(0x01, 0x21); /*! 8086 mode for both*/ - outb(0x01, 0xA1); - - outb(0xFF, 0xA1); /*! mask off all interrupts for now*/ - outb(0xFB, 0x21); /*! mask all irq's but irq2 which is cascaded*/ -} - -static void hardware_setup(struct param_info *info __unused) -{ - /* Disable nmi */ - outb(0x80, 0x70); - - /* Make sure any coprocessor is properly reset.. */ - outb(0, 0xf0); - outb(0, 0xf1); - - setup_i8259(); -} - - -/* - * ELF Boot loader - * ============================================================================= - */ - -static int count_elf_notes(Elf_Bhdr *bhdr) -{ - unsigned char *note, *end; - int count; - count = 0; - note = ((char *)bhdr) + sizeof(*bhdr); - end = ((char *)bhdr) + bhdr->b_size; -#if 0 - printf("count_elf_notes %lx\n", (unsigned long)bhdr); -#endif - while (note < end) { - Elf_Nhdr *hdr; - unsigned char *n_name, *n_desc, *next; - hdr = (Elf_Nhdr *)note; - n_name = note + sizeof(*hdr); - n_desc = n_name + ((hdr->n_namesz + 3) & ~3); - next = n_desc + ((hdr->n_descsz + 3) & ~3); -#if 0 - printf("elf_note = %lx\n", (unsigned long)note); - printf("elf_namesz = %x\n", hdr->n_namesz); - printf("elf_descsz = %x\n", hdr->n_descsz); - printf("elf_type = %x\n", hdr->n_type); - printf("elf_name = %lx\n", (unsigned long)n_name); - printf("elf_desc = %lx\n", (unsigned long)n_desc); -#endif - if (next > end) - break; - count++; - note = next; - } - return count; -} - -static Elf_Nhdr *find_elf_note(Elf_Bhdr *bhdr, - Elf_Word namesz, unsigned char *name, Elf_Word type) -{ - unsigned char *note, *end; - note = ((char *)bhdr) + sizeof(*bhdr); - end = ((char *)bhdr) + bhdr->b_size; - while(note < end) { - Elf_Nhdr *hdr; - unsigned char *n_name, *n_desc, *next; - hdr = (Elf_Nhdr *)note; - n_name = note + sizeof(*hdr); - n_desc = n_name + ((hdr->n_namesz + 3) & ~3); - next = n_desc + ((hdr->n_descsz + 3) & ~3); - if (next > end) - break; - if ((hdr->n_type == type) && - (hdr->n_namesz == namesz) && - (memcmp(n_name, name, namesz) == 0)) { - return hdr; - } - note = next; - } - return 0; -} - -static void convert_elf_command_line(struct param_info *info, - Elf_Word descsz, unsigned char *desc) -{ - append_command_line(info->real_mode, desc, descsz); -} - -struct { - Elf_Word namesz; - unsigned char *name; - Elf_Word type; - void (*convert)(struct param_info *info, Elf_Word descsz, unsigned char *desc); -} elf_notes[] = -{ - { 0, "", EBN_COMMAND_LINE, convert_elf_command_line }, -}; - -static void convert_elf_boot(struct param_info *info, Elf_Bhdr *bhdr) -{ - unsigned char *note, *end; - note = ((char *)bhdr) + sizeof(*bhdr); - end = ((char *)bhdr) + bhdr->b_size; - while(note < end) { - Elf_Nhdr *hdr; - unsigned char *n_name, *n_desc, *next; - size_t i; - hdr = (Elf_Nhdr *)note; - n_name = note + sizeof(*hdr); - n_desc = n_name + ((hdr->n_namesz + 3) & ~3); - next = n_desc + ((hdr->n_descsz + 3) & ~3); - if (next > end) - break; - for(i = 0; i < sizeof(elf_notes)/sizeof(elf_notes[0]); i++) { - if ((hdr->n_type == elf_notes[i].type) && - (hdr->n_namesz == elf_notes[i].namesz) && - (memcmp(n_name, elf_notes[i].name, elf_notes[i].namesz) == 0)) { - elf_notes[i].convert(info, hdr->n_descsz, n_desc); - break; - } - } - note = next; - } -} - -/* - * LinuxBIOS - * ============================================================================= - */ - -#define LB_MEM_DEBUG 0 -#if LB_MEM_DEBUG -#define lb_puts(x) printf("%s", x) -#define lb_put_hex(x) printf("%x", x) -#define lb_put_lhex(x) printf("%Lx", x) -#else -#define lb_puts(x) -#define lb_put_hex(x) -#define lb_put_lhex(x) -#endif /* LB_MEM_DEBUG */ - -static unsigned count_lb_records(void *start, unsigned long length) -{ - struct lb_record *rec; - void *end; - unsigned count; - count = 0; - end = ((char *)start) + length; - for(rec = start; ((void *)rec < end) && - (rec->size <= (unsigned long)(end - (void *)rec)); - rec = (void *)(((char *)rec) + rec->size)) { - count++; - } - return count; -} - -static struct lb_header *__find_lb_table(void *start, void *end) -{ - unsigned char *ptr; - /* For now be stupid.... */ - for(ptr = start; (void *)ptr < end; ptr += 16) { - struct lb_header *head = (void *)ptr; - if ((head->signature[0] == 'L') && - (head->signature[1] == 'B') && - (head->signature[2] == 'I') && - (head->signature[3] == 'O') && - (head->header_bytes == sizeof(*head)) && - (compute_checksum(head, sizeof(*head)) == 0) && - (compute_checksum(ptr + sizeof(*head), head->table_bytes) == - head->table_checksum) && - (count_lb_records(ptr + sizeof(*head), head->table_bytes) == - head->table_entries) - ) { - return head; - } - }; - return 0; -} - -static int find_lb_table(struct param_info *info) -{ - struct lb_header *head; - head = 0; - if (!head) { - /* First try at address 0 */ - head = __find_lb_table((void *)0x00000, (void *)0x1000); - } - if (!head) { - /* Then try at address 0xf0000 */ - head = __find_lb_table((void *)0xf0000, (void *)0x100000); - } - if (head) { - struct lb_forward *forward = (struct lb_forward *)(((char *)head) + head->header_bytes); - if (forward->tag == LB_TAG_FORWARD) { - head = __find_lb_table(forward->forward, - forward->forward + 0x1000); - } - } - if (head) { - info->has_linuxbios = 1; - info->lb_table = head; - return 1; - } - return 0; -} - -static void convert_lb_memory(struct param_info *info, struct lb_memory *mem) -{ - int i; - int entries; - entries = (mem->size - sizeof(*mem))/sizeof(mem->map[0]); - for(i = 0; (i < entries) && (i < E820MAX); i++) { - unsigned long type; - unsigned long long end; - end = mem->map[i].start + mem->map[i].size; - lb_puts("lb-mem: "); - lb_put_lhex(mem->map[i].start); - lb_puts(" - "); - lb_put_lhex(end); - lb_puts(" ("); - switch(mem->map[i].type) { - case LB_MEM_RAM: - type = E820_RAM; - lb_puts("ram"); - break; - default: - type = E820_RESERVED; - lb_puts("reserved"); - break; - } - lb_puts(")\n"); - add_e820_map(info->real_mode, - mem->map[i].start, mem->map[i].size, type); - } - info->need_mem_sizes = 0; -} - -static void query_lb_values(struct param_info *info) -{ - struct lb_header *head; - struct lb_record *rec; - void *start, *end; - head = info->lb_table; - start = ((unsigned char *)head) + sizeof(*head); - end = ((char *)start) + head->table_bytes; - for(rec = start; ((void *)rec < end) && - (rec->size <= (unsigned long)(end - (void *)rec)); - rec = (void *)(((char *)rec) + rec->size)) { - switch(rec->tag) { - case LB_TAG_MEMORY: - { - struct lb_memory *mem; - mem = (struct lb_memory *) rec; - convert_lb_memory(info, mem); - break; - } - default: - break; - }; - } -} - -/* - * PCBIOS - * ============================================================================= - */ -#define PC_MEM_DEBUG 0 -#if PC_MEM_DEBUG -#define pc_puts(x) printf("%s", x) -#define pc_put_hex(x) printf("%x", x) -#define pc_put_lhex(x) printf("%Lx", x) -#else -#define pc_puts(x) -#define pc_put_hex(x) -#define pc_put_lhex(x) -#endif /* PC_MEM_DEBUG */ - -/* functions for querying the pcbios */ -extern void noop(void); /* for testing purposes only */ -extern int meme820(struct e820entry *buf, int count); -extern unsigned int meme801(void); -extern unsigned short mem88(void); -extern unsigned short basememsize(void); - -struct meminfo { - int map_count; - struct e820entry map[E820MAX]; -}; - -static struct meminfo meminfo; -static void get_meminfo(struct param_info *info) -{ - int i; - pc_puts("getting meminfo...\n"); - meminfo.map_count = meme820(meminfo.map, E820MAX); - pc_puts("got meminfo count="); pc_put_hex(meminfo.map_count); pc_puts("\n"); - for(i = 0; i < meminfo.map_count; i++) { - unsigned long long end; - struct e820entry *seg = meminfo.map + i; - end = seg->addr + seg->size; - pc_puts("BIOS-e820: "); - pc_put_lhex(seg->addr); - pc_puts(" - "); - pc_put_lhex(end); - pc_puts(" ("); - switch(seg->type) { - case E820_RAM: - pc_puts("ram"); - info->need_mem_sizes = 0; - break; - case E820_ACPI: - pc_puts("ACPI data"); - break; - case E820_NVS: - pc_puts("ACPI NVS"); - break; - case E820_RESERVED: - default: - pc_puts("reserved"); - break; - } - pc_puts(")\n"); - add_e820_map(info->real_mode, - seg->addr, seg->size, seg->type); - } - info->real_mode->alt_mem_k = meme801(); - info->real_mode->ext_mem_k = mem88(); - if (info->real_mode->alt_mem_k || info->real_mode->ext_mem_k) { - info->need_mem_sizes = 0; - } -} - -static void query_pcbios_values(struct param_info *info) -{ - get_meminfo(info); -} - -/* - * Bootloaders - * ============================================================================= - */ - - -static void query_bootloader_param_class(struct param_info *info) -{ - int has_bootloader_type = 0; - Elf_Bhdr *hdr = 0; - if (!has_bootloader_type && (info->type == 0x2BADB002)) { - /* Orignal multiboot specification */ - info->has_multiboot = 1; - has_bootloader_type = 1; - } - if (!has_bootloader_type && (info->type == 0x0A11B007)) { - /* Uniform boot proposal */ - unsigned long checksum; - struct uniform_boot_header *header; - header = info->data; - checksum = compute_checksum(header, header->header_bytes); - if (checksum == 0) { - info->has_uniform_boot = 1; - has_bootloader_type = 1; - } else{ - printf("Bad uniform boot header checksum!\n"); - } - } - if (info->type == ELF_BHDR_MAGIC) { - hdr = info->data; - } - if (info->param && (info->param->b_signature == ELF_BHDR_MAGIC)) { - hdr = info->param; - } - if (!has_bootloader_type && hdr) { - /* Good ELF boot proposal... */ - unsigned long checksum; - int count; - checksum = 0; - if (hdr->b_checksum != 0) { - checksum = compute_checksum(hdr, hdr->b_size); - } - count = count_elf_notes(hdr); - if ((hdr->b_signature == ELF_BHDR_MAGIC) && - (checksum == 0) && - hdr->b_records == count) { - info->has_elf_boot = 1; - info->param = hdr; - has_bootloader_type = 1; - } - else { - printf("Bad ELF parameter table!\n"); - printf(" checksum = %x\n", checksum); - printf(" count = %x\n", count); - printf(" hdr = %x\n", (unsigned long)hdr); - printf(" b_size = %x\n", hdr->b_size); - printf("b_signature = %x\n", hdr->b_signature); - printf(" b_records = %x\n", hdr->b_records); - } - } - if (!has_bootloader_type) { - printf("Unknown bootloader class!\n"); - printf("type=%x\n", info->type); - printf("data=%x\n", (unsigned)info->data); - printf("param=%x\n", (unsigned)info->param); - } -} - -static void query_bootloader_values(struct param_info *info) -{ - if (info->has_multiboot) { - convert_multiboot(info, info->data); - } - else if (info->has_uniform_boot) { - convert_uniform_boot(info, info->data); - } - else if (info->has_elf_boot) { - convert_elf_boot(info, info->param); - } -} - -/* - * Firmware - * ============================================================================= - */ - -static int bootloader_query_firmware_class(struct param_info *info) -{ - Elf_Nhdr *hdr; - unsigned char *note, *n_name, *n_desc; - int detected_firmware_type; - if (!info->has_elf_boot) { - /* Only the elf boot tables gives us a firmware type */ - return 0; - } - detected_firmware_type = 0; - n_desc = 0; - - hdr = find_elf_note(info->param, 0, 0, EBN_FIRMWARE_TYPE); - if (!hdr) { - /* If I'm not explicitly told the firmware type - * do my best to guess it for myself. - */ - detected_firmware_type = 0; - } else { - note = (char *)hdr; - n_name = note + sizeof(*hdr); - n_desc = n_name + ((hdr->n_namesz + 3) & ~3); - } - if (!detected_firmware_type && hdr && - (hdr->n_descsz == 7) && - (memcmp(n_desc, "PCBIOS", 7) == 0)) { - info->has_pcbios = 1; - detected_firmware_type = 1; - } - if (!detected_firmware_type && hdr && - (hdr->n_descsz == 10) && - (memcmp(n_desc, "LinuxBIOS", 10) == 0)) { - /* Don't believe I'm linuxBIOS unless I can - * find the linuxBIOS table.. - */ - detected_firmware_type = find_lb_table(info); - } - if (!detected_firmware_type && hdr && - (hdr->n_descsz == 0)) { - /* No firmware is present */ - detected_firmware_type = 1; - } - if (!detected_firmware_type && hdr && - (hdr->n_descsz == 1) && - (memcmp(n_desc, "", 1) == 0)) { - /* No firmware is present */ - detected_firmware_type = 1; - } - if (!detected_firmware_type && hdr) { - printf("Unknown firmware type: %s\n", n_desc); - } - return detected_firmware_type; -} - -static void query_firmware_class(struct param_info *info) -{ - int detected_firmware_type = 0; - - /* First say I have no firmware at all... */ - info->has_pcbios = 0; - info->has_linuxbios = 0; - - /* See if the bootloader has told us what - * kind of firmware we are running on. - */ - detected_firmware_type = bootloader_query_firmware_class(info); - - /* See if we can detect linuxbios. */ - if (!detected_firmware_type) { - detected_firmware_type = find_lb_table(info); - } - - if (!detected_firmware_type) { - /* if all else fails assume a standard pcbios... */ - info->has_pcbios = 1; - } - - /* Now print out the firmware type... */ - printf("Firmware type:"); - if (info->has_linuxbios) { - printf(" LinuxBIOS"); - } - if (info->has_pcbios) { - printf(" PCBIOS"); - } - printf("\n"); -} - -static void query_firmware_values(struct param_info *info) -{ - if (info->has_linuxbios) { - query_lb_values(info); - } - if (info->has_pcbios) { - query_pcbios_values(info); - } - -} - -/* - * Debug - * ============================================================================= - */ - -#if 0 -static void print_offsets(void) -{ - struct parameters *real_mode = 0; - printf("print_offsets\n"); - - printf("orig_x =%x\n", (uint32_t)&real_mode->orig_x); - printf("orig_y =%x\n", (uint32_t)&real_mode->orig_y); - printf("ext_mem_k =%x\n", (uint32_t)&real_mode->ext_mem_k); - printf("orig_video_page =%x\n", (uint32_t)&real_mode->orig_video_page); - printf("orig_video_mode =%x\n", (uint32_t)&real_mode->orig_video_mode); - printf("orig_video_cols =%x\n", (uint32_t)&real_mode->orig_video_cols); - printf("unused2 =%x\n", (uint32_t)&real_mode->unused2); - printf("orig_video_ega_bx =%x\n", (uint32_t)&real_mode->orig_video_ega_bx); - printf("unused3 =%x\n", (uint32_t)&real_mode->unused3); - printf("orig_video_lines =%x\n", (uint32_t)&real_mode->orig_video_lines); - printf("orig_video_isVGA =%x\n", (uint32_t)&real_mode->orig_video_isVGA); - printf("orig_video_points =%x\n", (uint32_t)&real_mode->orig_video_points); - printf("lfb_width =%x\n", (uint32_t)&real_mode->lfb_width); - printf("lfb_height =%x\n", (uint32_t)&real_mode->lfb_height); - printf("lfb_depth =%x\n", (uint32_t)&real_mode->lfb_depth); - printf("lfb_base =%x\n", (uint32_t)&real_mode->lfb_base); - printf("lfb_size =%x\n", (uint32_t)&real_mode->lfb_size); - printf("cl_magic =%x\n", (uint32_t)&real_mode->cl_magic); - printf("cl_offset =%x\n", (uint32_t)&real_mode->cl_offset); - printf("lfb_linelength =%x\n", (uint32_t)&real_mode->lfb_linelength); - printf("red_size =%x\n", (uint32_t)&real_mode->red_size); - printf("red_pos =%x\n", (uint32_t)&real_mode->red_pos); - printf("green_size =%x\n", (uint32_t)&real_mode->green_size); - printf("green_pos =%x\n", (uint32_t)&real_mode->green_pos); - printf("blue_size =%x\n", (uint32_t)&real_mode->blue_size); - printf("blue_pos =%x\n", (uint32_t)&real_mode->blue_pos); - printf("rsvd_size =%x\n", (uint32_t)&real_mode->rsvd_size); - printf("rsvd_pos =%x\n", (uint32_t)&real_mode->rsvd_pos); - printf("vesapm_seg =%x\n", (uint32_t)&real_mode->vesapm_seg); - printf("vesapm_off =%x\n", (uint32_t)&real_mode->vesapm_off); - printf("pages =%x\n", (uint32_t)&real_mode->pages); - printf("reserved4 =%x\n", (uint32_t)&real_mode->reserved4); - printf("apm_bios_info =%x\n", (uint32_t)&real_mode->apm_bios_info); - printf("drive_info =%x\n", (uint32_t)&real_mode->drive_info); - printf("sys_desc_table =%x\n", (uint32_t)&real_mode->sys_desc_table); - printf("alt_mem_k =%x\n", (uint32_t)&real_mode->alt_mem_k); - printf("reserved5 =%x\n", (uint32_t)&real_mode->reserved5); - printf("e820_map_nr =%x\n", (uint32_t)&real_mode->e820_map_nr); - printf("reserved6 =%x\n", (uint32_t)&real_mode->reserved6); - printf("mount_root_rdonly =%x\n", (uint32_t)&real_mode->mount_root_rdonly); - printf("reserved7 =%x\n", (uint32_t)&real_mode->reserved7); - printf("ramdisk_flags =%x\n", (uint32_t)&real_mode->ramdisk_flags); - printf("reserved8 =%x\n", (uint32_t)&real_mode->reserved8); - printf("orig_root_dev =%x\n", (uint32_t)&real_mode->orig_root_dev); - printf("reserved9 =%x\n", (uint32_t)&real_mode->reserved9); - printf("aux_device_info =%x\n", (uint32_t)&real_mode->aux_device_info); - printf("reserved10 =%x\n", (uint32_t)&real_mode->reserved10); - printf("param_block_signature=%x\n", (uint32_t)&real_mode->param_block_signature); - printf("param_block_version =%x\n", (uint32_t)&real_mode->param_block_version); - printf("reserved11 =%x\n", (uint32_t)&real_mode->reserved11); - printf("loader_type =%x\n", (uint32_t)&real_mode->loader_type); - printf("loader_flags =%x\n", (uint32_t)&real_mode->loader_flags); - printf("reserved12 =%x\n", (uint32_t)&real_mode->reserved12); - printf("kernel_start =%x\n", (uint32_t)&real_mode->kernel_start); - printf("initrd_start =%x\n", (uint32_t)&real_mode->initrd_start); - printf("initrd_size =%x\n", (uint32_t)&real_mode->initrd_size); - printf("reserved13 =%x\n", (uint32_t)&real_mode->reserved13); - printf("e820_map =%x\n", (uint32_t)&real_mode->e820_map); - printf("reserved16 =%x\n", (uint32_t)&real_mode->reserved16); - printf("command_line =%x\n", (uint32_t)&real_mode->command_line); - printf("reserved17 =%x\n", (uint32_t)&real_mode->reserved17); -} - -static void print_linux_params(struct param_info *info) -{ - int i; - - printf("print_linux_params\n"); - /* Default screen size */ - printf("orig_x =%x\n", info->real_mode->orig_x); - printf("orig_y =%x\n", info->real_mode->orig_y); - printf("orig_video_page =%x\n", info->real_mode->orig_video_page); - printf("orig_video_mode =%x\n", info->real_mode->orig_video_mode); - printf("orig_video_cols =%x\n", info->real_mode->orig_video_cols); - printf("orig_video_lines =%x\n", info->real_mode->orig_video_lines); - printf("orig_video_ega_bx=%x\n", info->real_mode->orig_video_ega_bx); - printf("orig_video_isVGA =%x\n", info->real_mode->orig_video_isVGA); - printf("orig_video_points=%x\n", info->real_mode->orig_video_points); - - - /* System descriptor table... */ - printf("sys_dest_table_len=%x\n", info->real_mode->sys_desc_table.length); - - /* Memory sizes */ - printf("ext_mem_k =%x\n", info->real_mode->ext_mem_k); - printf("alt_mem_k =%x\n", info->real_mode->alt_mem_k); - printf("e820_map_nr =%x\n", info->real_mode->e820_map_nr); - for(i = 0; i < E820MAX; i++) { - printf("addr[%x] =%Lx\n", - i, info->real_mode->e820_map[i].addr); - printf("size[%x] =%Lx\n", - i, info->real_mode->e820_map[i].size); - printf("type[%x] =%Lx\n", - i, info->real_mode->e820_map[i].type); - } - printf("mount_root_rdonly=%x\n", info->real_mode->mount_root_rdonly); - printf("ramdisk_flags =%x\n", info->real_mode->ramdisk_flags); - printf("orig_root_dev =%x\n", info->real_mode->orig_root_dev); - printf("aux_device_info =%x\n", info->real_mode->aux_device_info); - printf("param_block_signature=%x\n", *((uint32_t *)info->real_mode->param_block_signature)); - printf("loader_type =%x\n", info->real_mode->loader_type); - printf("loader_flags =%x\n", info->real_mode->loader_flags); - printf("initrd_start =%x\n", info->real_mode->initrd_start); - printf("initrd_size =%x\n", info->real_mode->initrd_size); - - /* Where I'm putting the command line */ - printf("cl_magic =%x\n", info->real_mode->cl_magic); - printf("cl_offset =%x\n", info->real_mode->cl_offset); - - /* Now print the command line */ - printf("command_line =%s\n", info->real_mode->command_line); -} - - -#endif - -/* - * main - * ============================================================================= - */ - -void initialize_linux_params(struct param_info *info) -{ - int len; - /* First the defaults */ - memset(info->real_mode, 0, PAGE_SIZE); - - /* Default screen size */ - info->real_mode->orig_x = 0; - info->real_mode->orig_y = 25; - info->real_mode->orig_video_page = 0; - info->real_mode->orig_video_mode = 0; - info->real_mode->orig_video_cols = 80; - info->real_mode->orig_video_lines = 25; - info->real_mode->orig_video_ega_bx = 0; - info->real_mode->orig_video_isVGA = 1; - info->real_mode->orig_video_points = 16; - - /* Fill this in later */ - info->real_mode->ext_mem_k = 0; - - /* Fill in later... */ - info->real_mode->e820_map_nr = 0; - - /* Where I'm putting the command line */ - info->real_mode->cl_magic = CL_MAGIC_VALUE; - info->real_mode->cl_offset = 2048; - - info->real_mode->cmd_line_ptr = info->real_mode->cl_offset + (unsigned long) info->real_mode; - - /* Now set the command line */ - len = strnlen(info->image->cmdline, sizeof(info->real_mode->command_line) -1); - memcpy(info->real_mode->command_line, info->image->cmdline, len); - info->real_mode->command_line[len] = '\0'; - - /* from the bios initially */ - memset(&info->real_mode->apm_bios_info, 0, sizeof(info->real_mode->apm_bios_info)); - - memset(&info->real_mode->drive_info, 0, sizeof(info->real_mode->drive_info)); - - /* forget it for now... */ - info->real_mode->sys_desc_table.length = 0; - - /* Fill this in later */ - info->real_mode->alt_mem_k = 0; - info->real_mode->ext_mem_k = 0; - - /* default yes: this can be overridden on the command line */ - info->real_mode->mount_root_rdonly = 0xFFFF; - - /* old ramdisk options, These really should be command line - * things... - */ - info->real_mode->ramdisk_flags = info->image->ramdisk_flags; - - /* default to /dev/hda. - * Override this on the command line if necessary - */ - info->real_mode->orig_root_dev = info->image->root_dev; - - /* Originally from the bios? */ - info->real_mode->aux_device_info = 0; - - /* Boot block magic */ - memcpy(info->real_mode->param_block_signature, "HdrS", 4); - info->real_mode->param_block_version = 0x0201; - - /* Say I'm a kernel boot loader */ - info->real_mode->loader_type = (LOADER_TYPE_KERNEL << 4) + 0 /* version */; - - /* No loader flags */ - info->real_mode->loader_flags = 0; - - /* Set it to 16M, instead of 0 which means 4G */ - info->real_mode->kernel_alignment = 16*1024*1024; - - /* Ramdisk address and size ... */ - info->real_mode->initrd_start = 0; - info->real_mode->initrd_size = 0; - if (info->image->initrd_size) { - info->real_mode->initrd_start = info->image->initrd_start; - info->real_mode->initrd_size = info->image->initrd_size; - } - - /* Now remember those things that I need */ - info->need_mem_sizes = 1; -} - -void *convert_params(unsigned type, void *data, void *param, void *image) -{ - struct param_info info; -#if 0 - printf("hello world\n"); -#endif - info.real_mode = faked_real_mode; - info.type = type; - info.data = data; - info.param = param; - info.image = image; - initialize_linux_params(&info); - query_bootloader_param_class(&info); - query_firmware_class(&info); - query_firmware_values(&info); - query_bootloader_values(&info); - - /* Do the hardware setup that linux might forget... */ - hardware_setup(&info); - - /* Print some debugging information */ -#if 0 - printf("EXT_MEM_K=%x\n", info.real_mode->ext_mem_k); - printf("ALT_MEM_K=%x\n", info.real_mode->alt_mem_k); -#endif -#if 0 - print_offsets(); - print_linux_params(&info); -#endif -#if 0 - printf("info.real_mode = 0x%x\n", info.real_mode ); - printf("Jumping to Linux\n"); -#endif - return info.real_mode; -} - |