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authorStefan Reinauer <stepan@coresystems.de>2008-02-15 18:16:06 +0000
committerStefan Reinauer <stepan@openbios.org>2008-02-15 18:16:06 +0000
commitb34eea348cb7d6d9c93d17d51a1f322114b8f15d (patch)
tree38dd85932dacaa7c7a174d87307baff6210d70c4 /util/mkelfImage/linux-i386
parent46fc14dcc8cdba1d66ae6fa9fdcbbf33265d676e (diff)
Importing mkelfimage from
ftp://ftp.lnxi.com/pub/mkelfImage/mkelfImage-2.7.tar.gz Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3103 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'util/mkelfImage/linux-i386')
-rw-r--r--util/mkelfImage/linux-i386/Makefile35
-rw-r--r--util/mkelfImage/linux-i386/convert.bin.c284
-rw-r--r--util/mkelfImage/linux-i386/convert.h29
-rw-r--r--util/mkelfImage/linux-i386/convert.lds36
-rw-r--r--util/mkelfImage/linux-i386/convert_params.c1555
-rw-r--r--util/mkelfImage/linux-i386/head.S476
-rw-r--r--util/mkelfImage/linux-i386/mkelf-linux-i386.c388
-rw-r--r--util/mkelfImage/linux-i386/uniform_boot.h67
-rw-r--r--util/mkelfImage/linux-i386/x86-linux.h162
9 files changed, 3032 insertions, 0 deletions
diff --git a/util/mkelfImage/linux-i386/Makefile b/util/mkelfImage/linux-i386/Makefile
new file mode 100644
index 0000000000..51531d6f4b
--- /dev/null
+++ b/util/mkelfImage/linux-i386/Makefile
@@ -0,0 +1,35 @@
+LI386_DIR:=linux-i386
+LI386_OBJ:=$(OBJDIR)/$(LI386_DIR)
+LI386_DEP=Makefile Makefile.conf $(LI386_DIR)/Makefile
+
+$(LI386_OBJ)/mkelf-linux-i386.o: $(LI386_DIR)/mkelf-linux-i386.c $(LI386_DIR)/convert.bin.c $(LI386_DEP)
+ $(MKDIR) -p $(@D)
+ $(HOST_CC) $(HOST_CFLAGS) -c -g $< -o $@
+
+
+ifdef I386_CC
+
+$(LI386_DIR)/convert.bin.c: $(LI386_OBJ)/convert.bin $(OBJDIR)/bin/bin-to-hex $(LI386_DEP)
+ $(MKDIR) -p $(@D)
+ $(OBJDIR)/bin/bin-to-hex < $(LI386_OBJ)/convert.bin > $@
+
+$(LI386_OBJ)/convert.bin: $(LI386_OBJ)/convert $(LI386_DEP)
+ $(MKDIR) -p $(@D)
+ $(I386_OBJCOPY) -O binary $< $@
+
+CONVERT_LI386_OBJS=$(LI386_OBJ)/head.o $(LI386_OBJ)/convert_params.o
+
+$(LI386_OBJ)/convert: $(LI386_DIR)/convert.lds $(CONVERT_LI386_OBJS) $(LI386_DEP)
+ $(MKDIR) -p $(@D)
+ $(I386_LD) $(I386_LDFLAGS) -T $(LI386_DIR)/convert.lds -o $@ $(CONVERT_LI386_OBJS)
+
+$(LI386_OBJ)/head.o: $(LI386_DIR)/head.S $(LI386_DIR)/convert.h
+ $(MKDIR) -p $(@D)
+ $(I386_CPP) $(I386_CPPFLAGS) -DASSEMBLY $< | $(I386_AS) $(I386_ASFLAGS) -o $@
+
+$(LI386_OBJ)/convert_params.o: $(LI386_DIR)/convert_params.c $(LI386_DIR)/convert.h $(LI386_DEP)
+ $(MKDIR) -p $(@D)
+ $(I386_CC) $(I386_CFLAGS) -c -o $@ $<
+
+endif
+
diff --git a/util/mkelfImage/linux-i386/convert.bin.c b/util/mkelfImage/linux-i386/convert.bin.c
new file mode 100644
index 0000000000..7cf0eb5e72
--- /dev/null
+++ b/util/mkelfImage/linux-i386/convert.bin.c
@@ -0,0 +1,284 @@
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diff --git a/util/mkelfImage/linux-i386/convert.h b/util/mkelfImage/linux-i386/convert.h
new file mode 100644
index 0000000000..369829f78f
--- /dev/null
+++ b/util/mkelfImage/linux-i386/convert.h
@@ -0,0 +1,29 @@
+
+/* Hard coded locations */
+#define CONVERTLOC 0x10000
+#define REAL_MODE_DATA_LOC 0x20000
+#define GDTLOC 0x21000
+
+#define DEFAULT_ROOT_DEV ((0x3<<8)| 0)
+
+#define CMDLINE_MAX 256
+
+#ifdef ASSEMBLY
+#define CONVERT_MAGIC 0xA5A5A5A5
+#else
+#define CONVERT_MAGIC 0xA5A5A5A5UL
+#endif
+
+#ifndef ASSEMBLY
+struct image_parameters {
+ uint32_t convert_magic; /* a signature to verify mkelfImage was built properly */
+ uint32_t gdt_size;
+ uint32_t bss_size;
+ uint16_t ramdisk_flags;
+ uint16_t root_dev;
+ uint32_t entry;
+ uint32_t initrd_start;
+ uint32_t initrd_size;
+ uint8_t cmdline[CMDLINE_MAX];
+};
+#endif
diff --git a/util/mkelfImage/linux-i386/convert.lds b/util/mkelfImage/linux-i386/convert.lds
new file mode 100644
index 0000000000..2195fe435d
--- /dev/null
+++ b/util/mkelfImage/linux-i386/convert.lds
@@ -0,0 +1,36 @@
+OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
+OUTPUT_ARCH(i386)
+
+
+ENTRY(startup_32)
+SECTIONS
+{
+ . = 0x10000;
+ _text = .; /* Text and read-only data */
+ .text . : {
+ *(.text)
+ *(.text.*)
+ } = 0x9090
+ .rodata (.): {
+ *(.rodata)
+ *(.rodata.*)
+ }
+ _etext = .; /* End of text section */
+ .data (.): { /* Data */
+ *(.data)
+ *(.data.*)
+ *(.trailer)
+ }
+ _edata = .; /* End of data section */
+ _bss = .; /* BSS */
+ .bss (.): {
+ *(.bss)
+ }
+ _end = . ;
+ bss_size = _end - _bss;
+
+ /DISCARD/ : {
+ *(.comment)
+ *(.note)
+ }
+}
diff --git a/util/mkelfImage/linux-i386/convert_params.c b/util/mkelfImage/linux-i386/convert_params.c
new file mode 100644
index 0000000000..501adfbb11
--- /dev/null
+++ b/util/mkelfImage/linux-i386/convert_params.c
@@ -0,0 +1,1555 @@
+#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 */
+ uint8_t reserved15[0x2d0 - 0x230]; /* 0x230 */
+
+ 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) {
+ 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;
+
+ /* 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;
+}
+
diff --git a/util/mkelfImage/linux-i386/head.S b/util/mkelfImage/linux-i386/head.S
new file mode 100644
index 0000000000..c3990ac801
--- /dev/null
+++ b/util/mkelfImage/linux-i386/head.S
@@ -0,0 +1,476 @@
+/*
+ * exec_kernel/user_space/head.S
+ *
+ * Copyright (C) 2000, 2002, 2003 Eric Biederman
+ *
+ * Parts of this code were take from the linux startup
+ * code of linux-2.4.0-test9
+ *
+ * Other parts were taken from etherboot-5.0.5
+ */
+
+#define ASSEMBLY 1
+
+#define RELOC 0x10000
+#define PROT_CODE_SEG 0x10
+#define PROT_DATA_SEG 0x18
+#define REAL_CODE_SEG 0x08
+#define REAL_DATA_SEG 0x20
+
+ .equ CR0_PE,1
+
+.text
+.code32
+
+
+#include "convert.h"
+
+ .globl startup_32
+startup_32:
+ cld
+ cli
+
+ # Save the arguments safely out of the way
+ movl %eax, boot_type
+ movl %ebx, boot_data
+ cmp $0,%esp
+ jz 1f
+ movl 4(%esp), %eax
+ movl %eax, boot_param
+1:
+
+ movl stack_start, %esp
+
+ # Clear eflags
+ pushl $0
+ popfl
+
+ # Clear BSS
+ xorl %eax,%eax
+ movl $ _edata,%edi
+ movl $ _end,%ecx
+ subl %edi,%ecx
+ cld
+ rep
+ stosb
+
+ # Move the gdt where Linux will not smash it during decompression
+ movl $gdt, %esi
+ movl $GDTLOC, %edi
+ movl $(gdt_end - gdt), %ecx
+ rep movsb
+
+ # Linux makes stupid assumptions about the segments
+ # that are already setup, so setup a new gdt & ldt
+ # and then reload the segment registers.
+
+ lgdt gdt_48
+ lidt idt_48
+
+ # Load the data segment registers
+ movl $ PROT_DATA_SEG, %eax
+ movl %eax, %ds
+ movl %eax, %es
+ movl %eax, %fs
+ movl %eax, %gs
+ movl %eax, %ss
+
+ pushl $image_params # image build time parameters as forth arg
+ pushl boot_param # boot_param pointer as third arg
+ pushl boot_data # boot data pointer as second arg
+ pushl boot_type # boot data type as first argument
+ call convert_params
+
+ movl %eax, %esi # put the real mode pointer in a safe place
+ addl $16, %esp # pop the arguments
+
+
+ # Setup the registers before jumping to linux
+
+
+ # clear eflags
+ pushl $0
+ popfl
+
+ # Flag to indicate we are the bootstrap processor
+ xorl %ebx, %ebx
+
+ # Clear the unspecified registers for good measure
+ xorl %eax, %eax
+ xorl %ecx, %ecx
+ xorl %edx, %edx
+ xorl %edi, %edi
+ xorl %esp, %esp
+ xorl %ebp, %ebp
+
+
+ # Jump to the linux kernel
+ ljmp $ PROT_CODE_SEG , $ 0x100000
+
+
+ /* Routines to query the BIOS... */
+
+
+/**************************************************************************
+E820_MEMSIZE - Get a listing of memory regions
+**************************************************************************/
+#define SMAP 0x534d4150
+ .globl meme820
+meme820:
+ pushl %ebp
+ movl %esp, %ebp
+ pushl %ebx
+ pushl %esi
+ pushl %edi
+ movl 8(%ebp), %edi /* Address to return e820 structures at */
+ subl $RELOC, %edi
+ movl 12(%ebp), %esi /* Maximum number of e820 structurs to return */
+ pushl %esi
+ call _prot_to_real
+ .code16
+ xorl %ebx, %ebx
+jmpe820:
+ movl $0xe820, %eax
+ movl $SMAP, %edx
+ movl $20, %ecx
+ /* %di was setup earlier */
+ int $0x15
+ jc bail820
+
+ cmpl $SMAP, %eax
+ jne bail820
+
+good820:
+ /* If this is useable memory, we save it by simply advancing %di by
+ * sizeof(e820rec)
+ */
+ decl %esi
+ testl %esi,%esi
+ jz bail820
+
+ addw $20, %di
+again820:
+ cmpl $0, %ebx /* check to see if %ebx is set to EOF */
+ jne jmpe820
+
+bail820:
+ data32 call _real_to_prot
+ .code32
+ popl %eax
+ subl %esi, %eax /* Compute how many structure we read */
+
+ /* Restore everything else */
+ popl %edi
+ popl %esi
+ popl %ebx
+ movl %ebp, %esp
+ popl %ebp
+ ret
+
+
+/**************************************************************************
+MEME801 - Determine size of extended memory
+**************************************************************************/
+ .globl meme801
+meme801:
+ pushl %ebx
+ pushl %esi
+ pushl %edi
+ call _prot_to_real
+ .code16
+
+ stc # fix to work around buggy
+ xorw %cx,%cx # BIOSes which dont clear/set
+ xorw %dx,%dx # carry on pass/error of
+ # e801h memory size call
+ # or merely pass cx,dx though
+ # without changing them.
+ movw $0xe801,%ax
+ int $0x15
+ jc e801absent
+
+ cmpw $0x0, %cx # Kludge to handle BIOSes
+ jne e801usecxdx # which report their extended
+ cmpw $0x0, %dx # memory in AX/BX rather than
+ jne e801usecxdx # CX/DX. The spec I have read
+ movw %ax, %cx # seems to indicate AX/BX
+ movw %bx, %dx # are more reasonable anyway...
+
+e801usecxdx:
+ andl $0xffff, %edx # clear sign extend
+ shll $6, %edx # and go from 64k to 1k chunks
+ movl %edx, %eax # store extended memory size
+ andl $0xffff, %ecx # clear sign extend
+ addl %ecx, %eax # and add lower memory into
+
+ jmp e801out
+e801absent:
+ xorl %eax,%eax
+
+e801out:
+ data32 call _real_to_prot
+ .code32
+ /* Restore Everything */
+ popl %edi
+ popl %esi
+ popl %ebx
+ ret
+
+/**************************************************************************
+MEM88 - Determine size of extended memory
+**************************************************************************/
+ .globl mem88
+mem88:
+ pushl %ebx
+ pushl %esi
+ pushl %edi
+ call _prot_to_real
+ .code16
+
+ movb $0x88, %ah
+ int $0x15
+ andl $0xffff, %eax
+
+ data32 call _real_to_prot
+ .code32
+
+ /* Restore Everything */
+ popl %edi
+ popl %esi
+ popl %ebx
+ ret
+
+
+/**************************************************************************
+BASEMEMSIZE - Get size of the conventional (base) memory
+**************************************************************************/
+ .globl basememsize
+basememsize:
+ call _prot_to_real
+ .code16
+ int $0x12
+ movw %ax,%cx
+ DATA32 call _real_to_prot
+ .code32
+ movw %cx,%ax
+ ret
+
+/**************************************************************************
+_REAL_TO_PROT - Go from REAL mode to Protected Mode
+**************************************************************************/
+ .globl _real_to_prot
+_real_to_prot:
+ .code16
+ cli
+ cs
+ addr32 lgdt gdt_48 - RELOC
+ movl %cr0,%eax
+ orl $CR0_PE,%eax
+ movl %eax,%cr0 /* turn on protected mode */
+
+ /* flush prefetch queue, and reload %cs:%eip */
+ data32 ljmp $PROT_CODE_SEG,$1f
+1:
+ .code32
+ /* reload other segment registers */
+ movl $PROT_DATA_SEG,%eax
+ movl %eax,%ds
+ movl %eax,%es
+ movl %eax,%ss
+ addl $RELOC,%esp /* Fix up stack pointer */
+ xorl %eax,%eax
+ movl %eax,%fs
+ movl %eax,%gs
+ popl %eax /* Fix up return address */
+ addl $RELOC,%eax
+ pushl %eax
+
+ /* switch to protected mode idt */
+ cs
+ lidt idt_48
+ ret
+
+/**************************************************************************
+_PROT_TO_REAL - Go from Protected Mode to REAL Mode
+**************************************************************************/
+ .globl _prot_to_real
+_prot_to_real:
+ .code32
+ popl %eax
+ subl $RELOC,%eax /* Adjust return address */
+ pushl %eax
+ subl $RELOC,%esp /* Adjust stack pointer */
+ ljmp $REAL_CODE_SEG,$1f- RELOC /* jump to a 16 bit segment */
+1:
+ .code16
+ /* clear the PE bit of CR0 */
+ movl %cr0,%eax
+ andl $0!CR0_PE,%eax
+ movl %eax,%cr0
+
+ /* make intersegment jmp to flush the processor pipeline
+ * and reload %cs:%eip (to clear upper 16 bits of %eip).
+ */
+ data32 ljmp $(RELOC)>>4,$2f- RELOC
+2:
+ /* we are in real mode now
+ * set up the real mode segment registers : %ds, $ss, %es
+ */
+ movw %cs,%ax
+ movw %ax,%ds
+ movw %ax,%es
+ movw %ax,%ss
+ movw %ax,%fs
+ movw %ax,%gs
+
+ /* Switch to the real mode idt */
+ cs
+ addr32 lidt idt_real - RELOC
+
+ sti
+ data32 ret /* There is a 32 bit return address on the stack */
+ .code32
+
+boot_type: .long 0
+boot_data: .long 0
+boot_param: .long 0
+
+idt_real:
+ .word 0x400 # idt limit = 256
+ .word 0, 0
+idt_48:
+ .word 0 # idt limit = 0
+ .word 0, 0 # idt base = 0L
+gdt_48:
+ .word gdt_end - gdt - 1 # gdt limit=40,
+ # (5 GDT entries)
+ .long GDTLOC # gdt base
+
+# Descriptor tables
+# These need to be in a seperate section so I can be
+# certain later activities dont stomp them
+gdt:
+ /* 0x00 */
+ .word 0, 0, 0, 0 # dummy
+
+ /* 0x08 */
+ /* 16 bit real mode code segment */
+ .word 0xffff,(RELOC&0xffff)
+ .byte (RELOC>>16),0x9b,0x00,(RELOC>>24)
+
+ /* 0x10 */
+ .word 0xFFFF # 4Gb - (0x100000*0x1000 = 4Gb)
+ .word 0 # base address = 0
+ .word 0x9A00 # code read/exec
+ .word 0x00CF # granularity = 4096, 386
+ # (+5th nibble of limit)
+
+ /* 0x18 */
+ .word 0xFFFF # 4Gb - (0x100000*0x1000 = 4Gb)
+ .word 0 # base address = 0
+ .word 0x9200 # data read/write
+ .word 0x00CF # granularity = 4096, 386
+ # (+5th nibble of limit)
+
+ /* 0x20 */
+ /* 16 bit real mode data segment */
+ .word 0xffff,(RELOC&0xffff)
+ .byte (RELOC>>16),0x93,0x00,(RELOC>>24)
+
+ /* For 2.5.x the kernel segments have moved */
+
+ /* 0x28 dummy */
+ .quad 0
+
+ /* 0x30 dummy */
+ .quad 0
+ /* 0x38 dummy */
+ .quad 0
+ /* 0x40 dummy */
+ .quad 0
+ /* 0x48 dummy */
+ .quad 0
+ /* 0x50 dummy */
+ .quad 0
+ /* 0x58 dummy */
+ .quad 0
+
+
+ /* 0x60 */
+ .word 0xFFFF # 4Gb - (0x100000*0x1000 = 4Gb)
+ .word 0 # base address = 0
+ .word 0x9A00 # code read/exec
+ .word 0x00CF # granularity = 4096, 386
+ # (+5th nibble of limit)
+
+ /* 0x68 */
+ .word 0xFFFF # 4Gb - (0x100000*0x1000 = 4Gb)
+ .word 0 # base address = 0
+ .word 0x9200 # data read/write
+ .word 0x00CF # granularity = 4096, 386
+ # (+5th nibble of limit)
+/*
+ * The layout of the per-CPU GDT under Linux:
+ *
+ * 0 - null
+ * 1 - reserved
+ * 2 - reserved
+ * 3 - reserved
+ *
+ * 4 - default user CS <==== new cacheline
+ * 5 - default user DS
+ *
+ * ------- start of TLS (Thread-Local Storage) segments:
+ *
+ * 6 - TLS segment #1 [ glibc's TLS segment ]
+ * 7 - TLS segment #2 [ Wine's %fs Win32 segment ]
+ * 8 - TLS segment #3
+ * 9 - reserved
+ * 10 - reserved
+ * 11 - reserved
+ *
+ * ------- start of kernel segments:
+ *
+ * 12 - kernel code segment <==== new cacheline
+ * 13 - kernel data segment
+ * 14 - TSS
+ * 15 - LDT
+ * 16 - PNPBIOS support (16->32 gate)
+ * 17 - PNPBIOS support
+ * 18 - PNPBIOS support
+ * 19 - PNPBIOS support
+ * 20 - PNPBIOS support
+ * 21 - APM BIOS support
+ * 22 - APM BIOS support
+ * 23 - APM BIOS support
+ */
+gdt_end:
+
+
+
+ .section ".trailer", "a"
+ /* Constants set at build time, these are at the very end of my image */
+ .balign 16
+ .global image_params
+image_params:
+
+convert_magic:
+ .long CONVERT_MAGIC
+gdt_size:
+ .long gdt_end - gdt
+bss_size:
+ .long bss_size
+ramdisk_flags:
+ .word 0
+root_dev:
+ .word DEFAULT_ROOT_DEV
+entry:
+ .long 0
+initrd_start:
+ .long 0
+initrd_size:
+ .long 0
+cmdline:
+ .asciz "BOOT_IMAGE=head.S console=ttyS0 ip=dhcp root=/dev/nfs"
+ .org cmdline + CMDLINE_MAX, 0
+cmdline_end:
diff --git a/util/mkelfImage/linux-i386/mkelf-linux-i386.c b/util/mkelfImage/linux-i386/mkelf-linux-i386.c
new file mode 100644
index 0000000000..200d4a55f9
--- /dev/null
+++ b/util/mkelfImage/linux-i386/mkelf-linux-i386.c
@@ -0,0 +1,388 @@
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#define _GNU_SOURCE
+#include <getopt.h>
+#include "elf.h"
+#include "elf_boot.h"
+#include "convert.h"
+#include "x86-linux.h"
+#include "mkelfImage.h"
+
+static unsigned char payload[] = {
+#include "convert.bin.c"
+};
+
+struct kernel_info;
+static void (*parse_kernel_type)(struct kernel_info *info, char *kernel_buf, size_t kernel_size);
+static void parse_bzImage_kernel(struct kernel_info *info, char *kernel_buf, size_t kernel_size);
+static void parse_elf32_kernel(struct kernel_info *info, char *kernel_buf, size_t kernel_size);
+
+char *vmlinux_i386_probe(char *kernel_buf, off_t kernel_size)
+{
+ Elf32_Ehdr *ehdr;
+ Elf32_Phdr *phdr;
+ int i;
+ int hdr1, hdr2;
+ ehdr = (Elf32_Ehdr *)kernel_buf;
+ if (
+ (ehdr->e_ident[EI_MAG0] != ELFMAG0) ||
+ (ehdr->e_ident[EI_MAG1] != ELFMAG1) ||
+ (ehdr->e_ident[EI_MAG2] != ELFMAG2) ||
+ (ehdr->e_ident[EI_MAG3] != ELFMAG3)) {
+ return "No ELF signature found on kernel\n";
+ }
+ if (ehdr->e_ident[EI_CLASS] != ELFCLASS32) {
+ return "Not a 32bit ELF kernel\n";
+ }
+ if (ehdr->e_ident[EI_DATA] != ELFDATA2LSB) {
+ return "Not a little endian ELF kernel\n";
+ }
+ if (le16_to_cpu(ehdr->e_type) != ET_EXEC) {
+ return "Not an executable kernel\n";
+ }
+ if (le16_to_cpu(ehdr->e_machine) != EM_386) {
+ return "Not an i386 kernel\n";
+ }
+ if ( (ehdr->e_ident[EI_VERSION] != EV_CURRENT) ||
+ (le32_to_cpu(ehdr->e_version) != EV_CURRENT)) {
+ return "Kernel not using ELF version 1.\n";
+ }
+ if (le16_to_cpu(ehdr->e_phentsize) != sizeof(*phdr)) {
+ return "Kernel uses bad program header size.\n";
+ }
+ phdr = (Elf32_Phdr *)(kernel_buf + le32_to_cpu(ehdr->e_phoff));
+ hdr1 = hdr2 = -1;
+ for(i = 0; i < le32_to_cpu(ehdr->e_phnum); i++) {
+ if (le32_to_cpu(phdr[i].p_type) != PT_LOAD)
+ continue;
+ if (((hdr1 != -1) &&
+ ((le32_to_cpu(phdr[hdr1].p_paddr) & 0xfffffff) != 0x100000)) ||
+ (hdr2 != -1)) {
+ return "Too many PT_LOAD segments to be a linux kernel\n";
+ }
+ if (hdr1 == -1) {
+ hdr1 = i;
+ } else {
+ hdr2 = i;
+ }
+ }
+ if (hdr1 == -1) {
+ return "No PT_LOAD segments!\n";
+ }
+ parse_kernel_type = parse_elf32_kernel;
+ return 0;
+}
+
+char *bzImage_i386_probe(char *kernel_buf, off_t kernel_size)
+{
+ struct x86_linux_header *hdr;
+ unsigned long offset;
+ int setup_sects;
+ hdr = (struct x86_linux_header *)kernel_buf;
+
+ if (le16_to_cpu(hdr->boot_sector_magic) != 0xaa55) {
+ return "No bootsector magic";
+ }
+ if (memcmp(hdr->header_magic, "HdrS", 4) != 0) {
+ return "Not a linux kernel";
+ }
+
+ if (le16_to_cpu(hdr->protocol_version) < 0x202) {
+ return "Kernel protcols version before 2.02 not supported";
+ }
+
+ setup_sects = hdr->setup_sects;
+ if (setup_sects == 0) {
+ setup_sects = 4;
+ }
+ offset = 512 + (512 *setup_sects);
+ if (offset > kernel_size) {
+ return "Not enough bytes";
+ }
+ parse_kernel_type = parse_bzImage_kernel;
+ return 0;
+}
+
+char *linux_i386_probe(char *kernel_buf, off_t kernel_size)
+{
+ char *result;
+ result = "";
+ if (result) result = bzImage_i386_probe(kernel_buf, kernel_size);
+ if (result) result = vmlinux_i386_probe(kernel_buf, kernel_size);
+ if (result) result = bzImage_i386_probe(kernel_buf, kernel_size);
+ return result;
+}
+
+struct kernel_info
+{
+ void *kernel;
+ size_t filesz;
+ size_t memsz;
+ size_t paddr;
+ size_t vaddr;
+ void *kernel2;
+ size_t filesz2;
+ size_t memsz2;
+ size_t paddr2;
+ size_t vaddr2;
+ size_t entry;
+ char *version;
+};
+
+static void parse_elf32_kernel(struct kernel_info *info, char *kernel_buf, size_t kernel_size)
+{
+ Elf32_Ehdr *ehdr;
+ Elf32_Phdr *phdr;
+ int i;
+ int hdr1, hdr2;
+ ehdr = (Elf32_Ehdr *)kernel_buf;
+ phdr = (Elf32_Phdr *)(kernel_buf + ehdr->e_phoff);
+ hdr1 = hdr2 = -1;
+ for(i = 0; i < le16_to_cpu(ehdr->e_phnum); i++) {
+ if (le32_to_cpu(phdr[i].p_type) != PT_LOAD)
+ continue;
+ if (hdr2 != -1) {
+ die("Too many PT_LOAD segments to be a linux kernel\n");
+ }
+ if (hdr1 == -1) {
+ hdr1 = i;
+ } else {
+ hdr2 = i;
+ }
+ }
+ if (hdr1 == -1) {
+ die("No PT_LOAD segments!\n");
+ }
+ info->kernel = kernel_buf + le32_to_cpu(phdr[hdr1].p_offset);
+ info->filesz = le32_to_cpu(phdr[hdr1].p_filesz);
+ info->memsz = le32_to_cpu(phdr[hdr1].p_memsz);
+ info->paddr = le32_to_cpu(phdr[hdr1].p_paddr) & 0xfffffff;
+ info->vaddr = le32_to_cpu(phdr[hdr1].p_vaddr);
+
+ if (hdr2 != -1) {
+ info->kernel2 = kernel_buf + le32_to_cpu(phdr[hdr2].p_offset);
+ info->filesz2 = le32_to_cpu(phdr[hdr2].p_filesz);
+ info->memsz2 = le32_to_cpu(phdr[hdr2].p_memsz);
+ info->paddr2 = le32_to_cpu(phdr[hdr2].p_paddr) & 0xfffffff;
+ info->vaddr2 = le32_to_cpu(phdr[hdr2].p_vaddr);
+ }
+
+ info->entry = 0x100000;
+ info->version = "unknown";
+}
+
+static void parse_bzImage_kernel(struct kernel_info *info, char *kernel_buf, size_t kernel_size)
+{
+ struct x86_linux_header *hdr;
+ unsigned long offset;
+ int setup_sects;
+ hdr = (struct x86_linux_header *)kernel_buf;
+ setup_sects = hdr->setup_sects;
+ if (setup_sects == 0) {
+ setup_sects = 4;
+ }
+ offset = 512 + (512 *setup_sects);
+
+ info->kernel = kernel_buf + offset;
+ info->filesz = kernel_size - offset;
+ info->memsz = 0x700000;
+ info->paddr = 0x100000;
+ info->vaddr = 0x100000;
+ info->entry = info->paddr;
+ info->version = kernel_buf + 512 + le16_to_cpu(hdr->kver_addr);
+}
+
+static void parse_kernel(struct kernel_info *info, char *kernel_buf, size_t kernel_size)
+{
+ memset(info, 0, sizeof(*info));
+ if (parse_kernel_type) {
+ parse_kernel_type(info, kernel_buf, kernel_size);
+ }
+ else {
+ die("Unknown kernel format");
+ }
+}
+
+void linux_i386_usage(void)
+{
+ printf(
+ " --command-line=<string> Set the command line to <string>\n"
+ " --append=<string> Set the command line to <string>\n"
+ " --initrd=<filename> Set the initrd to <filename>\n"
+ " --ramdisk=<filename> Set the initrd to <filename>\n"
+ " --ramdisk-base=<addr> Set the initrd load address to <addr>\n"
+ );
+ return;
+}
+
+
+#define OPT_CMDLINE OPT_MAX+0
+#define OPT_RAMDISK OPT_MAX+1
+#define OPT_RAMDISK_BASE OPT_MAX+2
+
+#define DEFAULT_RAMDISK_BASE (8*1024*1024)
+
+int linux_i386_mkelf(int argc, char **argv,
+ struct memelfheader *ehdr, char *kernel_buf, off_t kernel_size)
+{
+ const char *ramdisk, *cmdline;
+ unsigned long ramdisk_base;
+ char *payload_buf, *ramdisk_buf;
+ off_t payload_size, ramdisk_size;
+ struct memelfphdr *phdr;
+ struct memelfnote *note;
+ struct kernel_info kinfo;
+ struct image_parameters *params;
+ int index;
+
+ int opt;
+ static const struct option options[] = {
+ MKELF_OPTIONS
+ { "command-line", 1, 0, OPT_CMDLINE },
+ { "append", 1, 0, OPT_CMDLINE },
+ { "initrd", 1, 0, OPT_RAMDISK },
+ { "ramdisk", 1, 0, OPT_RAMDISK },
+ { "ramdisk-base", 1, 0, OPT_RAMDISK_BASE },
+ { 0 , 0, 0, 0 },
+ };
+ static const char short_options[] = MKELF_OPT_STR;
+
+ ramdisk_base = DEFAULT_RAMDISK_BASE;
+ ramdisk = 0;
+ cmdline="";
+
+ while((opt = getopt_long(argc, argv, short_options, options, 0)) != -1) {
+ switch(opt) {
+ case '?':
+ error("Unknown option %s\n", argv[optind]);
+ break;
+ case OPT_RAMDISK_BASE:
+ {
+ char *end;
+ unsigned long base;
+ base = strtoul(optarg, &end, 0);
+ if ((end == optarg) || (*end != '\0')) {
+ error("Invalid ramdisk base\n");
+ }
+ ramdisk_base = base;
+ }
+ case OPT_RAMDISK:
+ ramdisk = optarg;
+ break;
+ case OPT_CMDLINE:
+ cmdline = optarg;
+ break;
+ default:
+ break;
+ }
+ }
+ ehdr->ei_class = ELFCLASS32;
+ ehdr->ei_data = ELFDATA2LSB;
+ ehdr->e_type = ET_EXEC;
+ ehdr->e_machine = EM_386;
+
+ /* locate the payload buffer */
+ payload_buf = payload;
+ payload_size = sizeof(payload);
+
+ /* slurp the input files */
+ ramdisk_buf = slurp_file(ramdisk, &ramdisk_size);
+
+ /* parse the kernel */
+ parse_kernel(&kinfo, kernel_buf, kernel_size);
+
+ /* Find the parameters */
+ params = (void *)(payload_buf + (payload_size - sizeof(*params)));
+
+ /* A sanity check against bad versions of binutils */
+ if (params->convert_magic != CONVERT_MAGIC) {
+ die("Internal error convert_magic %08x != %08x\n",
+ params->convert_magic, CONVERT_MAGIC);
+ }
+
+ /* Copy the command line */
+ strncpy(params->cmdline, cmdline, sizeof(params->cmdline));
+ params->cmdline[sizeof(params->cmdline)-1]= '\0';
+
+
+ /* Add a program header for the note section */
+ index = 4;
+ index += kinfo.kernel2 ? 1:0;
+ index += ramdisk_size ? 1:0;
+ phdr = add_program_headers(ehdr, index);
+
+ /* Fill in the program headers*/
+ phdr[0].p_type = PT_NOTE;
+
+ /* Fill in the converter program headers */
+ phdr[1].p_paddr = CONVERTLOC;
+ phdr[1].p_vaddr = CONVERTLOC;
+ phdr[1].p_filesz = payload_size;
+ phdr[1].p_memsz = payload_size + params->bss_size;
+ phdr[1].p_data = payload;
+
+ /* Reserve space for the REAL MODE DATA segment AND the GDT segment */
+ phdr[2].p_paddr = REAL_MODE_DATA_LOC;
+ phdr[2].p_vaddr = REAL_MODE_DATA_LOC;
+ phdr[2].p_filesz = 0;
+ phdr[2].p_memsz = (GDTLOC - REAL_MODE_DATA_LOC) + params->gdt_size;
+ phdr[2].p_data = 0;
+
+ phdr[3].p_paddr = kinfo.paddr;
+ phdr[3].p_vaddr = kinfo.vaddr;
+ phdr[3].p_filesz = kinfo.filesz;
+ phdr[3].p_memsz = kinfo.memsz;
+ phdr[3].p_data = kinfo.kernel;
+
+ index = 4;
+ /* Put the second kernel frament if present */
+ if (kinfo.kernel2) {
+ phdr[index].p_paddr = kinfo.paddr2;
+ phdr[index].p_vaddr = kinfo.vaddr2;
+ phdr[index].p_filesz = kinfo.filesz2;
+ phdr[index].p_memsz = kinfo.memsz2;
+ phdr[index].p_data = kinfo.kernel2;
+ index++;
+ }
+
+ /* Put the ramdisk at ramdisk base.
+ */
+ params->initrd_start = params->initrd_size = 0;
+ if (ramdisk_size) {
+ phdr[index].p_paddr = ramdisk_base;
+ phdr[index].p_vaddr = ramdisk_base;
+ phdr[index].p_filesz = ramdisk_size;
+ phdr[index].p_memsz = ramdisk_size;
+ phdr[index].p_data = ramdisk_buf;
+ params->initrd_start = phdr[index].p_paddr;
+ params->initrd_size = phdr[index].p_filesz;
+ index++;
+ }
+
+ /* Set the start location */
+ params->entry = kinfo.entry;
+ ehdr->e_entry = phdr[1].p_paddr;
+
+ /* Setup the elf notes */
+ note = add_notes(ehdr, 3);
+ note[0].n_type = EIN_PROGRAM_NAME;
+ note[0].n_name = "ELFBoot";
+ note[0].n_desc = "Linux";
+ note[0].n_descsz = strlen(note[0].n_desc)+1;
+
+ note[1].n_type = EIN_PROGRAM_VERSION;
+ note[1].n_name = "ELFBoot";
+ note[1].n_desc = kinfo.version;
+ note[1].n_descsz = strlen(note[1].n_desc);
+
+ note[2].n_type = EIN_PROGRAM_CHECKSUM;
+ note[2].n_name = "ELFBoot";
+ note[2].n_desc = 0;
+ note[2].n_descsz = 2;
+
+ return 0;
+}
+
diff --git a/util/mkelfImage/linux-i386/uniform_boot.h b/util/mkelfImage/linux-i386/uniform_boot.h
new file mode 100644
index 0000000000..5291fa66bb
--- /dev/null
+++ b/util/mkelfImage/linux-i386/uniform_boot.h
@@ -0,0 +1,67 @@
+#ifndef _LINUX_UNIFORM_BOOT_H
+#define _LINUX_UNIFORM_BOOT_H
+
+/* The uniform boot environment information is restricted to
+ * hardware information. In particular for a simple enough machine
+ * all of the environment information should be able to reside in
+ * a rom and not need to be moved. This information is the
+ * information a trivial boot room can pass to linux to let it
+ * run the hardware.
+ *
+ * Also all of the information should be Position Independent Data.
+ * That is it should be safe to relocated any of the information
+ * without it's meaning/correctnes changing. The exception is the
+ * uniform_boot_header with it's two pointers arg & env.
+ *
+ * The addresses in the arg & env pointers must be physical
+ * addresses. A physical address is an address you put in the page
+ * table.
+ *
+ * The Command line is for user policy. Things like the default
+ * root device.
+ *
+ */
+
+struct uniform_boot_header
+{
+ unsigned long header_bytes;
+ unsigned long header_checksum;
+ unsigned long arg;
+ unsigned long arg_bytes;
+ unsigned long env;
+ unsigned long env_bytes;
+};
+
+/* Every entry in the boot enviroment list will correspond to a boot
+ * info record. Encoding both type and size. The type is obviously
+ * so you can tell what it is. The size allows you to skip that
+ * boot enviroment record if you don't know what it easy. This allows
+ * forward compatibility with records not yet defined.
+ */
+struct ube_record {
+ unsigned long tag; /* tag ID */
+ unsigned long size; /* size of record (in bytes) */
+ unsigned long data[0]; /* data */
+};
+
+
+#define UBE_TAG_MEMORY 0x0001
+
+struct ube_memory_range {
+ unsigned long long start;
+ unsigned long long size;
+ unsigned long type;
+#define UBE_MEM_RAM 1
+#define UBE_MEM_RESERVED 2
+#define UBE_MEM_ACPI 3
+#define UBE_MEM_NVS 4
+
+};
+
+struct ube_memory {
+ unsigned long tag;
+ unsigned long size;
+ struct ube_memory_range map[0];
+};
+
+#endif /* _LINUX_UNIFORM_BOOT_H */
diff --git a/util/mkelfImage/linux-i386/x86-linux.h b/util/mkelfImage/linux-i386/x86-linux.h
new file mode 100644
index 0000000000..fe1673ea67
--- /dev/null
+++ b/util/mkelfImage/linux-i386/x86-linux.h
@@ -0,0 +1,162 @@
+#ifndef X86_LINUX_H
+#define X86_LINUX_H
+
+#define E820MAP 0x2d0 /* our map */
+#define E820MAX 32 /* number of entries in E820MAP */
+#define E820NR 0x1e8 /* # entries in E820MAP */
+
+#ifndef ASSEMBLY
+
+struct e820entry {
+ uint64_t addr; /* start of memory segment */
+ uint64_t size; /* size of memory segment */
+ uint32_t 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
+} __attribute__((packed));
+
+/* 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];
+};
+
+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 x86_linux_param_header {
+ 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[8]; /* 0x1e9 */
+ uint8_t setup_sects; /* 0x1f1 */
+ 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
+ uint16_t vid_mode; /* 0x1fa */
+ uint16_t root_dev; /* 0x1fc */
+ uint8_t reserved9[1]; /* 0x1fe */
+ uint8_t aux_device_info; /* 0x1ff */
+ /* 2.00+ */
+ uint8_t reserved10[2]; /* 0x200 */
+ uint8_t header_magic[4]; /* 0x202 */
+ uint16_t protocol_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_UNKNOWN 0xFF
+ 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 */
+ uint8_t reserved15[160]; /* 0x230 */
+ struct e820entry e820_map[E820MAX]; /* 0x2d0 */
+ /* 0x550 */
+#define COMMAND_LINE_SIZE 256
+};
+
+struct x86_linux_header {
+ uint8_t reserved1[0x1f1]; /* 0x000 */
+ uint8_t setup_sects; /* 0x1f1 */
+ uint16_t root_flags; /* 0x1f2 */
+ uint8_t reserved2[6]; /* 0x1f4 */
+ uint16_t vid_mode; /* 0x1fa */
+ uint16_t root_dev; /* 0x1fc */
+ uint16_t boot_sector_magic; /* 0x1fe */
+ /* 2.00+ */
+ uint8_t reserved3[2]; /* 0x200 */
+ uint8_t header_magic[4]; /* 0x202 */
+ uint16_t protocol_version; /* 0x206 */
+ uint32_t realmode_swtch; /* 0x208 */
+ uint16_t start_sys; /* 0x20c */
+ uint16_t kver_addr; /* 0x20e */
+ uint8_t type_of_loader; /* 0x210 */
+ uint8_t loadflags; /* 0x211 */
+ uint16_t setup_move_size; /* 0x212 */
+ uint32_t code32_start; /* 0x214 */
+ uint32_t ramdisk_image; /* 0x218 */
+ uint32_t ramdisk_size; /* 0x21c */
+ uint8_t reserved4[4]; /* 0x220 */
+ /* 2.01+ */
+ uint16_t heap_end_ptr; /* 0x224 */
+ uint8_t reserved5[2]; /* 0x226 */
+ /* 2.02+ */
+ uint32_t cmd_line_ptr; /* 0x228 */
+ /* 2.03+ */
+ uint32_t initrd_addr_max; /* 0x22c */
+ uint8_t tail[32*1024]; /* 0x230 */
+} __attribute__ ((packed));
+
+#endif /* ASSEMBLY */
+
+#endif /* X86_LINUX_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 04:35:12 +0000