diff options
Diffstat (limited to 'arch/i386')
| -rw-r--r-- | arch/i386/include/asm/bootparam.h | 123 | ||||
| -rw-r--r-- | arch/i386/include/asm/e820.h | 155 | ||||
| -rw-r--r-- | arch/i386/include/asm/ioctl.h | 1 | ||||
| -rw-r--r-- | arch/i386/include/asm/ist.h | 34 | ||||
| -rw-r--r-- | arch/i386/include/asm/video/edid.h | 16 | ||||
| -rw-r--r-- | arch/i386/lib/zimage.c | 127 |
6 files changed, 424 insertions, 32 deletions
diff --git a/arch/i386/include/asm/bootparam.h b/arch/i386/include/asm/bootparam.h new file mode 100644 index 0000000..64d2e1f --- /dev/null +++ b/arch/i386/include/asm/bootparam.h @@ -0,0 +1,123 @@ +#ifndef _ASM_X86_BOOTPARAM_H +#define _ASM_X86_BOOTPARAM_H + +#include <linux/types.h> +#include <linux/screen_info.h> +#include <linux/apm_bios.h> +#include <linux/edd.h> +#include <asm/e820.h> +#include <asm/ist.h> +#include <asm/video/edid.h> + +/* setup data types */ +#define SETUP_NONE 0 +#define SETUP_E820_EXT 1 + +/* extensible setup data list node */ +struct setup_data { + __u64 next; + __u32 type; + __u32 len; + __u8 data[0]; +}; + +struct setup_header { + __u8 setup_sects; + __u16 root_flags; + __u32 syssize; + __u16 ram_size; +#define RAMDISK_IMAGE_START_MASK 0x07FF +#define RAMDISK_PROMPT_FLAG 0x8000 +#define RAMDISK_LOAD_FLAG 0x4000 + __u16 vid_mode; + __u16 root_dev; + __u16 boot_flag; + __u16 jump; + __u32 header; + __u16 version; + __u32 realmode_swtch; + __u16 start_sys; + __u16 kernel_version; + __u8 type_of_loader; + __u8 loadflags; +#define LOADED_HIGH (1<<0) +#define QUIET_FLAG (1<<5) +#define KEEP_SEGMENTS (1<<6) +#define CAN_USE_HEAP (1<<7) + __u16 setup_move_size; + __u32 code32_start; + __u32 ramdisk_image; + __u32 ramdisk_size; + __u32 bootsect_kludge; + __u16 heap_end_ptr; + __u8 ext_loader_ver; + __u8 ext_loader_type; + __u32 cmd_line_ptr; + __u32 initrd_addr_max; + __u32 kernel_alignment; + __u8 relocatable_kernel; + __u8 _pad2[3]; + __u32 cmdline_size; + __u32 hardware_subarch; + __u64 hardware_subarch_data; + __u32 payload_offset; + __u32 payload_length; + __u64 setup_data; +} __attribute__((packed)); + +struct sys_desc_table { + __u16 length; + __u8 table[14]; +}; + +struct efi_info { + __u32 efi_loader_signature; + __u32 efi_systab; + __u32 efi_memdesc_size; + __u32 efi_memdesc_version; + __u32 efi_memmap; + __u32 efi_memmap_size; + __u32 efi_systab_hi; + __u32 efi_memmap_hi; +}; + +/* The so-called "zeropage" */ +struct boot_params { + struct screen_info screen_info; /* 0x000 */ + struct apm_bios_info apm_bios_info; /* 0x040 */ + __u8 _pad2[4]; /* 0x054 */ + __u64 tboot_addr; /* 0x058 */ + struct ist_info ist_info; /* 0x060 */ + __u8 _pad3[16]; /* 0x070 */ + __u8 hd0_info[16]; /* obsolete! */ /* 0x080 */ + __u8 hd1_info[16]; /* obsolete! */ /* 0x090 */ + struct sys_desc_table sys_desc_table; /* 0x0a0 */ + __u8 _pad4[144]; /* 0x0b0 */ + struct edid_info edid_info; /* 0x140 */ + struct efi_info efi_info; /* 0x1c0 */ + __u32 alt_mem_k; /* 0x1e0 */ + __u32 scratch; /* Scratch field! */ /* 0x1e4 */ + __u8 e820_entries; /* 0x1e8 */ + __u8 eddbuf_entries; /* 0x1e9 */ + __u8 edd_mbr_sig_buf_entries; /* 0x1ea */ + __u8 _pad6[6]; /* 0x1eb */ + struct setup_header hdr; /* setup header */ /* 0x1f1 */ + __u8 _pad7[0x290-0x1f1-sizeof(struct setup_header)]; + __u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */ + struct e820entry e820_map[E820MAX]; /* 0x2d0 */ + __u8 _pad8[48]; /* 0xcd0 */ + struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */ + __u8 _pad9[276]; /* 0xeec */ +} __attribute__((packed)); + +enum { + X86_SUBARCH_PC = 0, + X86_SUBARCH_LGUEST, + X86_SUBARCH_XEN, + X86_SUBARCH_MRST, + X86_NR_SUBARCHS, +}; + + + +#endif /* _ASM_X86_BOOTPARAM_H */ diff --git a/arch/i386/include/asm/e820.h b/arch/i386/include/asm/e820.h new file mode 100644 index 0000000..d155ce9 --- /dev/null +++ b/arch/i386/include/asm/e820.h @@ -0,0 +1,155 @@ +#ifndef _ASM_X86_E820_H +#define _ASM_X86_E820_H +#define E820MAP 0x2d0 /* our map */ +#define E820MAX 128 /* number of entries in E820MAP */ + +/* + * Legacy E820 BIOS limits us to 128 (E820MAX) nodes due to the + * constrained space in the zeropage. If we have more nodes than + * that, and if we've booted off EFI firmware, then the EFI tables + * passed us from the EFI firmware can list more nodes. Size our + * internal memory map tables to have room for these additional + * nodes, based on up to three entries per node for which the + * kernel was built: MAX_NUMNODES == (1 << CONFIG_NODES_SHIFT), + * plus E820MAX, allowing space for the possible duplicate E820 + * entries that might need room in the same arrays, prior to the + * call to sanitize_e820_map() to remove duplicates. The allowance + * of three memory map entries per node is "enough" entries for + * the initial hardware platform motivating this mechanism to make + * use of additional EFI map entries. Future platforms may want + * to allow more than three entries per node or otherwise refine + * this size. + */ + +/* + * Odd: 'make headers_check' complains about numa.h if I try + * to collapse the next two #ifdef lines to a single line: + * #if defined(__KERNEL__) && defined(CONFIG_EFI) + */ +#ifdef __KERNEL__ +#ifdef CONFIG_EFI +#include <linux/numa.h> +#define E820_X_MAX (E820MAX + 3 * MAX_NUMNODES) +#else /* ! CONFIG_EFI */ +#define E820_X_MAX E820MAX +#endif +#else /* ! __KERNEL__ */ +#define E820_X_MAX E820MAX +#endif + +#define E820NR 0x1e8 /* # entries in E820MAP */ + +#define E820_RAM 1 +#define E820_RESERVED 2 +#define E820_ACPI 3 +#define E820_NVS 4 +#define E820_UNUSABLE 5 + +/* reserved RAM used by kernel itself */ +#define E820_RESERVED_KERN 128 + +#ifndef __ASSEMBLY__ +#include <linux/types.h> +struct e820entry { + __u64 addr; /* start of memory segment */ + __u64 size; /* size of memory segment */ + __u32 type; /* type of memory segment */ +} __attribute__((packed)); + +struct e820map { + __u32 nr_map; + struct e820entry map[E820_X_MAX]; +}; + +#define ISA_START_ADDRESS 0xa0000 +#define ISA_END_ADDRESS 0x100000 + +#define BIOS_BEGIN 0x000a0000 +#define BIOS_END 0x00100000 + +#ifdef __KERNEL__ +/* see comment in arch/x86/kernel/e820.c */ +extern struct e820map e820; +extern struct e820map e820_saved; + +extern unsigned long pci_mem_start; +extern int e820_any_mapped(u64 start, u64 end, unsigned type); +extern int e820_all_mapped(u64 start, u64 end, unsigned type); +extern void e820_add_region(u64 start, u64 size, int type); +extern void e820_print_map(char *who); +extern int +sanitize_e820_map(struct e820entry *biosmap, int max_nr_map, u32 *pnr_map); +extern u64 e820_update_range(u64 start, u64 size, unsigned old_type, + unsigned new_type); +extern u64 e820_remove_range(u64 start, u64 size, unsigned old_type, + int checktype); +extern void update_e820(void); +extern void e820_setup_gap(void); +extern int e820_search_gap(unsigned long *gapstart, unsigned long *gapsize, + unsigned long start_addr, unsigned long long end_addr); +struct setup_data; +extern void parse_e820_ext(struct setup_data *data, unsigned long pa_data); + +#if defined(CONFIG_X86_64) || \ + (defined(CONFIG_X86_32) && defined(CONFIG_HIBERNATION)) +extern void e820_mark_nosave_regions(unsigned long limit_pfn); +#else +static inline void e820_mark_nosave_regions(unsigned long limit_pfn) +{ +} +#endif + +#ifdef CONFIG_MEMTEST +extern void early_memtest(unsigned long start, unsigned long end); +#else +static inline void early_memtest(unsigned long start, unsigned long end) +{ +} +#endif + +extern unsigned long end_user_pfn; + +extern u64 find_e820_area(u64 start, u64 end, u64 size, u64 align); +extern u64 find_e820_area_size(u64 start, u64 *sizep, u64 align); +extern void reserve_early(u64 start, u64 end, char *name); +extern void reserve_early_overlap_ok(u64 start, u64 end, char *name); +extern void free_early(u64 start, u64 end); +extern void early_res_to_bootmem(u64 start, u64 end); +extern u64 early_reserve_e820(u64 startt, u64 sizet, u64 align); + +extern unsigned long e820_end_of_ram_pfn(void); +extern unsigned long e820_end_of_low_ram_pfn(void); +extern int e820_find_active_region(const struct e820entry *ei, + unsigned long start_pfn, + unsigned long last_pfn, + unsigned long *ei_startpfn, + unsigned long *ei_endpfn); +extern void e820_register_active_regions(int nid, unsigned long start_pfn, + unsigned long end_pfn); +extern u64 e820_hole_size(u64 start, u64 end); +extern void finish_e820_parsing(void); +extern void e820_reserve_resources(void); +extern void e820_reserve_resources_late(void); +extern void setup_memory_map(void); +extern char *default_machine_specific_memory_setup(void); + +/* + * Returns true iff the specified range [s,e) is completely contained inside + * the ISA region. + */ +/* +static inline bool is_ISA_range(u64 s, u64 e) +{ + return s >= ISA_START_ADDRESS && e <= ISA_END_ADDRESS; +} +*/ +#endif /* __KERNEL__ */ +#endif /* __ASSEMBLY__ */ + +#ifdef __KERNEL__ +/* #include <linux/ioport.h> */ + +#define HIGH_MEMORY (1024*1024) +#endif /* __KERNEL__ */ + +#endif /* _ASM_X86_E820_H */ diff --git a/arch/i386/include/asm/ioctl.h b/arch/i386/include/asm/ioctl.h new file mode 100644 index 0000000..b279fe0 --- /dev/null +++ b/arch/i386/include/asm/ioctl.h @@ -0,0 +1 @@ +#include <asm-generic/ioctl.h> diff --git a/arch/i386/include/asm/ist.h b/arch/i386/include/asm/ist.h new file mode 100644 index 0000000..7e5dff1 --- /dev/null +++ b/arch/i386/include/asm/ist.h @@ -0,0 +1,34 @@ +#ifndef _ASM_X86_IST_H +#define _ASM_X86_IST_H + +/* + * Include file for the interface to IST BIOS + * Copyright 2002 Andy Grover <andrew.grover@intel.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + + +#include <linux/types.h> + +struct ist_info { + __u32 signature; + __u32 command; + __u32 event; + __u32 perf_level; +}; + +#ifdef __KERNEL__ + +extern struct ist_info ist_info; + +#endif /* __KERNEL__ */ +#endif /* _ASM_X86_IST_H */ diff --git a/arch/i386/include/asm/video/edid.h b/arch/i386/include/asm/video/edid.h new file mode 100644 index 0000000..928c342 --- /dev/null +++ b/arch/i386/include/asm/video/edid.h @@ -0,0 +1,16 @@ +#ifndef __linux_video_edid_h__ +#define __linux_video_edid_h__ + +#if !defined(__KERNEL__) || defined(CONFIG_X86) + +struct edid_info { + unsigned char dummy[128]; +}; + +#ifdef __KERNEL__ +extern struct edid_info edid_info; +#endif /* __KERNEL__ */ + +#endif + +#endif /* __linux_video_edid_h__ */ diff --git a/arch/i386/lib/zimage.c b/arch/i386/lib/zimage.c index c3b4e59..b39615a 100644 --- a/arch/i386/lib/zimage.c +++ b/arch/i386/lib/zimage.c @@ -34,6 +34,8 @@ #include <asm/zimage.h> #include <asm/realmode.h> #include <asm/byteorder.h> +#include <asm/bootparam.h> +#include <asm/ic/sc520.h> /* * Memory lay-out: @@ -90,48 +92,56 @@ void *load_zimage(char *image, unsigned long kernel_size, int big_image; void *load_address; + struct setup_header *hdr = (struct setup_header *)(image + SETUP_SECTS_OFF); setup_base = (void*)DEFAULT_SETUP_BASE; /* base address for real-mode segment */ - if (KERNEL_MAGIC != *(u16*)(image + BOOT_FLAG_OFF)) { - printf("Error: Invalid kernel magic (found 0x%04x, expected 0xaa55)\n", - *(u16*)(image + BOOT_FLAG_OFF)); + if (KERNEL_MAGIC != hdr->boot_flag) { + printf("Error: Invalid Boot Flag (found 0x%04x, expected 0x%04x)\n", + hdr->boot_flag, KERNEL_MAGIC); return 0; + } else { + printf("Valid Boot Flag\n"); } - /* determine boot protocol version */ - if (KERNEL_V2_MAGIC == *(u32*)(image+HEADER_OFF)) { - bootproto = *(u16*)(image+VERSION_OFF); + if (KERNEL_V2_MAGIC == hdr->header) { + printf("Magic signature found\n"); + + bootproto = hdr->version; } else { /* Very old kernel */ + printf("Magic signature not found\n"); bootproto = 0x0100; } /* determine size of setup */ - if (0 == *(u8*)(image + SETUP_SECTS_OFF)) { + if (0 == hdr->setup_sects) { + printf("Setup Sectors = 0 (defaulting to 4)\n"); setup_size = 5 * 512; } else { - setup_size = (*(u8*)(image + SETUP_SECTS_OFF) + 1) * 512; + setup_size = (hdr->setup_sects + 1) * 512; } + printf("Setup Size = 0x%8.8lx\n", (ulong)setup_size); + if (setup_size > SETUP_MAX_SIZE) { printf("Error: Setup is too large (%d bytes)\n", setup_size); } /* Determine image type */ - big_image = (bootproto >= 0x0200) && (*(u8*)(image + LOADFLAGS_OFF) & BIG_KERNEL_FLAG); + big_image = (bootproto >= 0x0200) && (hdr->loadflags & BIG_KERNEL_FLAG); - /* Derermine load address */ - load_address = (void*)(big_image ? BZIMAGE_LOAD_ADDR:ZIMAGE_LOAD_ADDR); + /* Determine load address */ + load_address = (void*)(big_image ? BZIMAGE_LOAD_ADDR : ZIMAGE_LOAD_ADDR); /* load setup */ + printf("Moving Real-Mode Code to 0x%8.8lx (%d bytes)\n", (ulong)setup_base, setup_size); memmove(setup_base, image, setup_size); printf("Using boot protocol version %x.%02x\n", (bootproto & 0xff00) >> 8, bootproto & 0xff); - if (bootproto == 0x0100) { *(u16*)(setup_base + CMD_LINE_MAGIC_OFF) = COMMAND_LINE_MAGIC; @@ -154,48 +164,58 @@ void *load_zimage(char *image, unsigned long kernel_size, memset((void*)0x90000 + setup_size, 0, SETUP_MAX_SIZE-setup_size); } + /* We are now setting up the real-mode version of the header */ + hdr = (struct setup_header *)(setup_base + SETUP_SECTS_OFF); + if (bootproto >= 0x0200) { - *(u8*)(setup_base + TYPE_OF_LOADER_OFF) = 0xff; - printf("Linux kernel version %s\n", - (char*)(setup_base + SETUP_START_OFFSET + - *(u16*)(setup_base + START_SYS_OFF + 2))); + hdr->type_of_loader = 8; + + if (hdr->setup_sects >= 15) + printf("Linux kernel version %s\n", (char *) + (setup_base + (hdr->kernel_version + 0x200))); + else + printf("Setup Sectors < 15 - Cannot print kernel version.\n"); if (initrd_addr) { printf("Initial RAM disk at linear address 0x%08lx, size %ld bytes\n", initrd_addr, initrd_size); - *(u32*)(setup_base + RAMDISK_IMAGE_OFF) = initrd_addr; - *(u32*)(setup_base + RAMDISK_SIZE_OFF)=initrd_size; + hdr->ramdisk_image = initrd_addr; + hdr->ramdisk_size = initrd_size; } } if (bootproto >= 0x0201) { - *(u16*)(setup_base + HEAP_END_PTR_OFF) = HEAP_END_OFFSET; - - /* CAN_USE_HEAP */ - *(u8*)(setup_base + LOADFLAGS_OFF) = - *(u8*)(setup_base + LOADFLAGS_OFF) | HEAP_FLAG; + hdr->heap_end_ptr = HEAP_END_OFFSET; + hdr->loadflags |= HEAP_FLAG; } if (bootproto >= 0x0202) { - *(u32*)(setup_base + CMD_LINE_PTR_OFF) = (u32)setup_base + COMMAND_LINE_OFFSET; + hdr->cmd_line_ptr = (u32)setup_base + COMMAND_LINE_OFFSET; } else if (bootproto >= 0x0200) { + *(u16*)(setup_base + CMD_LINE_MAGIC_OFF) = COMMAND_LINE_MAGIC; *(u16*)(setup_base + CMD_LINE_OFFSET_OFF) = COMMAND_LINE_OFFSET; - *(u16*)(setup_base + SETUP_MOVE_SIZE_OFF) = 0x9100; + + hdr->setup_move_size = 0x9100; } + if (bootproto >= 0x0204) + kernel_size = hdr->syssize * 16; + else + kernel_size -= setup_size; + if (big_image) { - if ((kernel_size - setup_size) > BZIMAGE_MAX_SIZE) { + if ((kernel_size) > BZIMAGE_MAX_SIZE) { printf("Error: bzImage kernel too big! (size: %ld, max: %d)\n", - kernel_size - setup_size, BZIMAGE_MAX_SIZE); + kernel_size, BZIMAGE_MAX_SIZE); return 0; } - } else if ((kernel_size - setup_size) > ZIMAGE_MAX_SIZE) { + } else if ((kernel_size) > ZIMAGE_MAX_SIZE) { printf("Error: zImage kernel too big! (size: %ld, max: %d)\n", - kernel_size - setup_size, ZIMAGE_MAX_SIZE); + kernel_size, ZIMAGE_MAX_SIZE); return 0; } @@ -203,10 +223,10 @@ void *load_zimage(char *image, unsigned long kernel_size, build_command_line(setup_base + COMMAND_LINE_OFFSET, auto_boot); printf("Loading %czImage at address 0x%08x (%ld bytes)\n", big_image ? 'b' : ' ', - (u32)load_address, kernel_size - setup_size); + (u32)load_address, kernel_size); - memmove(load_address, image + setup_size, kernel_size - setup_size); + memmove(load_address, image + setup_size, kernel_size); /* ready for booting */ return setup_base; @@ -218,8 +238,51 @@ void boot_zimage(void *setup_base) memset(®s, 0, sizeof(struct pt_regs)); regs.xds = (u32)setup_base >> 4; - regs.xss = 0x9000; + regs.xes = regs.xds; + regs.xss = regs.xds; regs.esp = 0x9000; regs.eflags = 0; enter_realmode(((u32)setup_base+SETUP_START_OFFSET)>>4, 0, ®s, ®s); } + +int do_zboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + void *base_ptr; + void *bzImage_addr; + ulong bzImage_size = 0; + + disable_interrupts(); + + /* Setup board for maximum PC/AT Compatibility */ + setup_pcat_compatibility(); + + /* argv[1] holds the address of the bzImage */ + bzImage_addr = (void *)simple_strtoul(argv[1], NULL, 16); + + if (argc == 3) + bzImage_size = simple_strtoul(argv[2], NULL, 16); + + /* Lets look for*/ + base_ptr = load_zimage (bzImage_addr, bzImage_size, 0, 0, 0); + + if (NULL == base_ptr) { + printf ("## Kernel loading failed ...\n"); + } else { + printf ("## Transferring control to Linux (at address %08x) ...\n", + (u32)base_ptr); + + /* we assume that the kernel is in place */ + printf("\nStarting kernel ...\n\n"); + + boot_zimage(base_ptr); + /* does not return */ + } + + return -1; +} + +U_BOOT_CMD( + zboot, 3, 0, do_zboot, + "Boot bzImage", + "" +); |