From 669df7e42d460233f39e26d7c27d3c17821f4666 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Fri, 25 May 2012 10:47:39 +0000 Subject: [PATCH] pxe: add support for parsing local syslinux files Add a new command "sysboot" which parses syslinux menu files and boots using kernel and initrd specified by menu files. The operation is similar to "pxe boot" except local files on ext2 or fat filesystem are parsed. Signed-off-by: Rob Herring --- common/cmd_pxe.c | 141 ++++++++++++++++++++++++++++++++++++++++++++--- include/common.h | 6 ++ 2 files changed, 139 insertions(+), 8 deletions(-) diff --git a/common/cmd_pxe.c b/common/cmd_pxe.c index 0fc863b22a..2b1115d727 100644 --- a/common/cmd_pxe.c +++ b/common/cmd_pxe.c @@ -132,6 +132,51 @@ static int get_bootfile_path(const char *file_path, char *bootfile_path, return 1; } +static int (*do_getfile)(char *file_path, char *file_addr); + +static int do_get_tftp(char *file_path, char *file_addr) +{ + char *tftp_argv[] = {"tftp", NULL, NULL, NULL}; + + tftp_argv[1] = file_addr; + tftp_argv[2] = file_path; + + if (do_tftpb(NULL, 0, 3, tftp_argv)) + return -ENOENT; + + return 1; +} + +static char *fs_argv[5]; + +static int do_get_ext2(char *file_path, char *file_addr) +{ +#ifdef CONFIG_CMD_EXT2 + fs_argv[0] = "ext2load"; + fs_argv[3] = file_addr; + fs_argv[4] = file_path; + + if (!do_ext2load(NULL, 0, 5, fs_argv)) + return 1; +#endif + return -ENOENT; +} + +static int do_get_fat(char *file_path, char *file_addr) +{ +#ifdef CONFIG_CMD_FAT + fs_argv[0] = "fatload"; + fs_argv[3] = file_addr; + fs_argv[4] = file_path; + + if (!do_fat_fsload(NULL, 0, 5, fs_argv)) + return 1; +#endif + return -ENOENT; +} + + + /* * As in pxelinux, paths to files referenced from files we retrieve are * relative to the location of bootfile. get_relfile takes such a path and @@ -145,7 +190,6 @@ static int get_relfile(char *file_path, void *file_addr) size_t path_len; char relfile[MAX_TFTP_PATH_LEN+1]; char addr_buf[10]; - char *tftp_argv[] = {"tftp", NULL, NULL, NULL}; int err; err = get_bootfile_path(file_path, relfile, sizeof(relfile)); @@ -170,13 +214,7 @@ static int get_relfile(char *file_path, void *file_addr) sprintf(addr_buf, "%p", file_addr); - tftp_argv[1] = addr_buf; - tftp_argv[2] = relfile; - - if (do_tftpb(NULL, 0, 3, tftp_argv)) - return -ENOENT; - - return 1; + return do_getfile(relfile, addr_buf); } /* @@ -322,6 +360,8 @@ do_pxe_get(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) unsigned long pxefile_addr_r; int err; + do_getfile = do_get_tftp; + if (argc != 1) return CMD_RET_USAGE; @@ -1331,6 +1371,8 @@ do_pxe_boot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) struct pxe_menu *cfg; char *pxefile_addr_str; + do_getfile = do_get_tftp; + if (argc == 1) { pxefile_addr_str = from_env("pxefile_addr_r"); if (!pxefile_addr_str) @@ -1391,3 +1433,86 @@ U_BOOT_CMD( "get - try to retrieve a pxe file using tftp\npxe " "boot [pxefile_addr_r] - boot from the pxe file at pxefile_addr_r\n" ); + +/* + * Boots a system using a local disk syslinux/extlinux file + * + * Returns 0 on success, 1 on error. + */ +int do_sysboot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + unsigned long pxefile_addr_r; + struct pxe_menu *cfg; + char *pxefile_addr_str; + char *filename; + int prompt = 0; + + if (strstr(argv[1], "-p")) { + prompt = 1; + argc--; + argv++; + } + + if (argc < 4) + return cmd_usage(cmdtp); + + if (argc < 5) { + pxefile_addr_str = from_env("pxefile_addr_r"); + if (!pxefile_addr_str) + return 1; + } else { + pxefile_addr_str = argv[4]; + } + + if (argc < 6) + filename = getenv("bootfile"); + else { + filename = argv[5]; + setenv("bootfile", filename); + } + + if (strstr(argv[3], "ext2")) + do_getfile = do_get_ext2; + else if (strstr(argv[3], "fat")) + do_getfile = do_get_fat; + else { + printf("Invalid filesystem: %s\n", argv[3]); + return 1; + } + fs_argv[1] = argv[1]; + fs_argv[2] = argv[2]; + + if (strict_strtoul(pxefile_addr_str, 16, &pxefile_addr_r) < 0) { + printf("Invalid pxefile address: %s\n", pxefile_addr_str); + return 1; + } + + if (get_pxe_file(filename, (void *)pxefile_addr_r) < 0) { + printf("Error reading config file\n"); + return 1; + } + + cfg = parse_pxefile((char *)(pxefile_addr_r)); + + if (cfg == NULL) { + printf("Error parsing config file\n"); + return 1; + } + + if (prompt) + cfg->prompt = 1; + + handle_pxe_menu(cfg); + + destroy_pxe_menu(cfg); + + return 0; +} + +U_BOOT_CMD( + sysboot, 7, 1, do_sysboot, + "command to get and boot from syslinux files", + "[-p] [addr] [filename]\n" + " - load and parse syslinux menu file 'filename' from ext2 or fat\n" + " filesystem on 'dev' on 'interface' to address 'addr'" +); diff --git a/include/common.h b/include/common.h index ecfa6c429f..7cf15c53b7 100644 --- a/include/common.h +++ b/include/common.h @@ -325,6 +325,12 @@ void doc_probe(unsigned long physadr); /* common/cmd_net.c */ int do_tftpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]); +/* common/cmd_fat.c */ +int do_fat_fsload(cmd_tbl_t *, int, int, char * const []); + +/* common/cmd_ext2.c */ +int do_ext2load(cmd_tbl_t *, int, int, char * const []); + /* common/cmd_nvedit.c */ int env_init (void); void env_relocate (void); -- 2.39.5