diff options
Diffstat (limited to 'lib_i386')
| -rw-r--r-- | lib_i386/Makefile | 23 | ||||
| -rw-r--r-- | lib_i386/bootm.c | 107 | ||||
| -rw-r--r-- | lib_i386/i386_linux.c | 179 | ||||
| -rw-r--r-- | lib_i386/zimage.c | 50 |
4 files changed, 123 insertions, 236 deletions
diff --git a/lib_i386/Makefile b/lib_i386/Makefile index e344da5..4cc29f4 100644 --- a/lib_i386/Makefile +++ b/lib_i386/Makefile @@ -25,13 +25,22 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(ARCH).a -SOBJS = bios.o bios_pci.o realmode_switch.o - -COBJS = board.o bios_setup.o i386_linux.o zimage.o realmode.o \ - pci_type1.o pci.o video_bios.o video.o - -SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) -OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) +SOBJS-y += bios.o +SOBJS-y += bios_pci.o +SOBJS-y += realmode_switch.o + +COBJS-y += bios_setup.o +COBJS-y += board.o +COBJS-y += bootm.o +COBJS-y += pci.o +COBJS-y += pci_type1.o +COBJS-y += realmode.o +COBJS-y += video_bios.o +COBJS-y += video.o +COBJS-y += zimage.o + +SRCS := $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c) +OBJS := $(addprefix $(obj),$(SOBJS-y) $(COBJS-y)) $(LIB): $(obj).depend $(OBJS) $(AR) $(ARFLAGS) $@ $(OBJS) diff --git a/lib_i386/bootm.c b/lib_i386/bootm.c new file mode 100644 index 0000000..107ebaa --- /dev/null +++ b/lib_i386/bootm.c @@ -0,0 +1,107 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger <mgroeger@sysgo.de> + * + * Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) + * + * 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 of the License, 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <common.h> +#include <command.h> +#include <image.h> +#include <zlib.h> +#include <asm/byteorder.h> +#include <asm/zimage.h> + +/*cmd_boot.c*/ +extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); + +void do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], + bootm_headers_t *images) +{ + void *base_ptr; + ulong os_data, os_len; + ulong initrd_start, initrd_end; + ulong ep; + image_header_t *hdr; + int ret; +#if defined(CONFIG_FIT) + const void *data; + size_t len; +#endif + + ret = boot_get_ramdisk (argc, argv, images, IH_ARCH_I386, + &initrd_start, &initrd_end); + if (ret) + goto error; + + if (images->legacy_hdr_valid) { + hdr = images->legacy_hdr_os; + if (image_check_type (hdr, IH_TYPE_MULTI)) { + /* if multi-part image, we need to get first subimage */ + image_multi_getimg (hdr, 0, &os_data, &os_len); + } else { + /* otherwise get image data */ + os_data = image_get_data (hdr); + os_len = image_get_data_size (hdr); + } +#if defined(CONFIG_FIT) + } else if (images->fit_uname_os) { + ret = fit_image_get_data (images->fit_hdr_os, + images->fit_noffset_os, &data, &len); + if (ret) { + puts ("Can't get image data/size!\n"); + goto error; + } + os_data = (ulong)data; + os_len = (ulong)len; +#endif + } else { + puts ("Could not find kernel image!\n"); + goto error; + } + + base_ptr = load_zimage ((void*)os_data, os_len, + initrd_start, initrd_end - initrd_start, 0); + + if (NULL == base_ptr) { + printf ("## Kernel loading failed ...\n"); + goto error; + + } + + if (!images->autostart) + return ; + +#ifdef DEBUG + printf ("## Transferring control to Linux (at address %08x) ...\n", + (u32)base_ptr); +#endif + + /* we assume that the kernel is in place */ + printf("\nStarting kernel ...\n\n"); + + boot_zimage(base_ptr); + /* does not return */ + return; + +error: + if (images->autostart) + do_reset (cmdtp, flag, argc, argv); + return; +} diff --git a/lib_i386/i386_linux.c b/lib_i386/i386_linux.c deleted file mode 100644 index b4a6f5a..0000000 --- a/lib_i386/i386_linux.c +++ /dev/null @@ -1,179 +0,0 @@ -/* - * (C) Copyright 2002 - * Sysgo Real-Time Solutions, GmbH <www.elinos.com> - * Marius Groeger <mgroeger@sysgo.de> - * - * Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) - * - * 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 of the License, 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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#include <common.h> -#include <command.h> -#include <image.h> -#include <zlib.h> -#include <asm/byteorder.h> -#include <asm/zimage.h> - -/*cmd_boot.c*/ -extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); - -extern image_header_t header; /* from cmd_bootm.c */ - - -image_header_t *fake_header(image_header_t *hdr, void *ptr, int size) -{ - /* try each supported image type in order */ - if (NULL != fake_zimage_header(hdr, ptr, size)) { - return hdr; - } - - return NULL; -} - - -void do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], - ulong addr, ulong *len_ptr, int verify) -{ - void *base_ptr; - - ulong len = 0, checksum; - ulong initrd_start, initrd_end; - ulong data; - image_header_t *hdr = &header; - - /* - * Check if there is an initrd image - */ - if (argc >= 3) { - addr = simple_strtoul(argv[2], NULL, 16); - - printf ("## Loading Ramdisk Image at %08lx ...\n", addr); - - /* Copy header so we can blank CRC field for re-calculation */ - memcpy (&header, (char *)addr, sizeof(image_header_t)); - - if (ntohl(hdr->ih_magic) != IH_MAGIC) { - printf ("Bad Magic Number\n"); - do_reset (cmdtp, flag, argc, argv); - } - - data = (ulong)&header; - len = sizeof(image_header_t); - - checksum = ntohl(hdr->ih_hcrc); - hdr->ih_hcrc = 0; - - if (crc32 (0, (char *)data, len) != checksum) { - printf ("Bad Header Checksum\n"); - do_reset (cmdtp, flag, argc, argv); - } - - print_image_hdr (hdr); - - data = addr + sizeof(image_header_t); - len = ntohl(hdr->ih_size); - - if (verify) { - ulong csum = 0; - - printf (" Verifying Checksum ... "); - csum = crc32 (0, (char *)data, len); - if (csum != ntohl(hdr->ih_dcrc)) { - printf ("Bad Data CRC\n"); - do_reset (cmdtp, flag, argc, argv); - } - printf ("OK\n"); - } - - if ((hdr->ih_os != IH_OS_LINUX) || - (hdr->ih_arch != IH_CPU_I386) || - (hdr->ih_type != IH_TYPE_RAMDISK) ) { - printf ("No Linux i386 Ramdisk Image\n"); - do_reset (cmdtp, flag, argc, argv); - } - - /* - * Now check if we have a multifile image - */ - } else if ((hdr->ih_type==IH_TYPE_MULTI) && (len_ptr[1])) { - ulong tail = ntohl(len_ptr[0]) % 4; - int i; - - /* skip kernel length and terminator */ - data = (ulong)(&len_ptr[2]); - /* skip any additional image length fields */ - for (i=1; len_ptr[i]; ++i) - data += 4; - /* add kernel length, and align */ - data += ntohl(len_ptr[0]); - if (tail) { - data += 4 - tail; - } - - len = ntohl(len_ptr[1]); - - } else { - /* - * no initrd image - */ - data = 0; - } - -#ifdef DEBUG - if (!data) { - printf ("No initrd\n"); - } -#endif - - if (data) { - initrd_start = data; - initrd_end = initrd_start + len; - printf (" Loading Ramdisk to %08lx, end %08lx ... ", - initrd_start, initrd_end); - memmove ((void *)initrd_start, (void *)data, len); - printf ("OK\n"); - } else { - initrd_start = 0; - initrd_end = 0; - } - - /* if multi-part image, we need to advance base ptr */ - if ((hdr->ih_type==IH_TYPE_MULTI) && (len_ptr[1])) { - int i; - for (i=0, addr+=sizeof(int); len_ptr[i++]; addr+=sizeof(int)); - } - - base_ptr = load_zimage((void*)addr + sizeof(image_header_t), ntohl(hdr->ih_size), - initrd_start, initrd_end-initrd_start, 0); - - if (NULL == base_ptr) { - printf ("## Kernel loading failed ...\n"); - do_reset(cmdtp, flag, argc, argv); - - } - -#ifdef DEBUG - printf ("## Transferring control to Linux (at address %08x) ...\n", - (u32)base_ptr); -#endif - - /* we assume that the kernel is in place */ - printf("\nStarting kernel ...\n\n"); - - boot_zimage(base_ptr); - -} diff --git a/lib_i386/zimage.c b/lib_i386/zimage.c index 3510f2f..c3b4e59 100644 --- a/lib_i386/zimage.c +++ b/lib_i386/zimage.c @@ -212,7 +212,6 @@ void *load_zimage(char *image, unsigned long kernel_size, return setup_base; } - void boot_zimage(void *setup_base) { struct pt_regs regs; @@ -224,52 +223,3 @@ void boot_zimage(void *setup_base) regs.eflags = 0; enter_realmode(((u32)setup_base+SETUP_START_OFFSET)>>4, 0, ®s, ®s); } - - -image_header_t *fake_zimage_header(image_header_t *hdr, void *ptr, int size) -{ - /* There is no way to know the size of a zImage ... * - * so we assume that 2MB will be enough for now */ -#define ZIMAGE_SIZE 0x200000 - - /* load a 1MB, the loaded will have to be moved to its final - * position again later... */ -#define ZIMAGE_LOAD 0x100000 - - ulong checksum; - - if (KERNEL_MAGIC != *(u16*)(ptr + BOOT_FLAG_OFF)) { - /* not a zImage or bzImage */ - return NULL; - } - - if (-1 == size) { - size = ZIMAGE_SIZE; - } -#if 0 - checksum = crc32 (0, ptr, size); -#else - checksum = 0; -#endif - memset(hdr, 0, sizeof(image_header_t)); - - /* Build new header */ - hdr->ih_magic = htonl(IH_MAGIC); - hdr->ih_time = 0; - hdr->ih_size = htonl(size); - hdr->ih_load = htonl(ZIMAGE_LOAD); - hdr->ih_ep = 0; - hdr->ih_dcrc = htonl(checksum); - hdr->ih_os = IH_OS_LINUX; - hdr->ih_arch = IH_CPU_I386; - hdr->ih_type = IH_TYPE_KERNEL; - hdr->ih_comp = IH_COMP_NONE; - - strncpy((char *)hdr->ih_name, "(none)", IH_NMLEN); - - checksum = crc32(0,(const char *)hdr,sizeof(image_header_t)); - - hdr->ih_hcrc = htonl(checksum); - - return hdr; -} |