+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2010-2011 Calxeda, Inc.
* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <command.h>
-#include <malloc.h>
-#include <mapmem.h>
-#include <linux/string.h>
-#include <linux/ctype.h>
-#include <errno.h>
-#include <linux/list.h>
#include <fs.h>
-#include <asm/io.h>
-
-#include "menu.h"
-#include "cli.h"
+#include <net.h>
-#define MAX_TFTP_PATH_LEN 127
+#include "pxe_utils.h"
+#ifdef CONFIG_CMD_NET
const char *pxe_default_paths[] = {
#ifdef CONFIG_SYS_SOC
+#ifdef CONFIG_SYS_BOARD
+ "default-" CONFIG_SYS_ARCH "-" CONFIG_SYS_SOC "-" CONFIG_SYS_BOARD,
+#endif
"default-" CONFIG_SYS_ARCH "-" CONFIG_SYS_SOC,
#endif
"default-" CONFIG_SYS_ARCH,
NULL
};
-static bool is_pxe;
-
-/*
- * Like env_get, but prints an error if envvar isn't defined in the
- * environment. It always returns what env_get does, so it can be used in
- * place of env_get without changing error handling otherwise.
- */
-static char *from_env(const char *envvar)
-{
- char *ret;
-
- ret = env_get(envvar);
-
- if (!ret)
- printf("missing environment variable: %s\n", envvar);
-
- return ret;
-}
-
-#ifdef CONFIG_CMD_NET
-/*
- * Convert an ethaddr from the environment to the format used by pxelinux
- * filenames based on mac addresses. Convert's ':' to '-', and adds "01-" to
- * the beginning of the ethernet address to indicate a hardware type of
- * Ethernet. Also converts uppercase hex characters into lowercase, to match
- * pxelinux's behavior.
- *
- * Returns 1 for success, -ENOENT if 'ethaddr' is undefined in the
- * environment, or some other value < 0 on error.
- */
-static int format_mac_pxe(char *outbuf, size_t outbuf_len)
-{
- uchar ethaddr[6];
-
- if (outbuf_len < 21) {
- printf("outbuf is too small (%zd < 21)\n", outbuf_len);
-
- return -EINVAL;
- }
-
- if (!eth_env_get_enetaddr_by_index("eth", eth_get_dev_index(), ethaddr))
- return -ENOENT;
-
- sprintf(outbuf, "01-%02x-%02x-%02x-%02x-%02x-%02x",
- ethaddr[0], ethaddr[1], ethaddr[2],
- ethaddr[3], ethaddr[4], ethaddr[5]);
-
- return 1;
-}
-#endif
-
-/*
- * Returns the directory the file specified in the bootfile env variable is
- * in. If bootfile isn't defined in the environment, return NULL, which should
- * be interpreted as "don't prepend anything to paths".
- */
-static int get_bootfile_path(const char *file_path, char *bootfile_path,
- size_t bootfile_path_size)
-{
- char *bootfile, *last_slash;
- size_t path_len = 0;
-
- /* Only syslinux allows absolute paths */
- if (file_path[0] == '/' && !is_pxe)
- goto ret;
-
- bootfile = from_env("bootfile");
-
- if (!bootfile)
- goto ret;
-
- last_slash = strrchr(bootfile, '/');
-
- if (last_slash == NULL)
- goto ret;
-
- path_len = (last_slash - bootfile) + 1;
-
- if (bootfile_path_size < path_len) {
- printf("bootfile_path too small. (%zd < %zd)\n",
- bootfile_path_size, path_len);
-
- return -1;
- }
-
- strncpy(bootfile_path, bootfile, path_len);
-
- ret:
- bootfile_path[path_len] = '\0';
-
- return 1;
-}
-
-static int (*do_getfile)(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr);
-
-#ifdef CONFIG_CMD_NET
-static int do_get_tftp(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr)
+static int do_get_tftp(struct cmd_tbl *cmdtp, const char *file_path,
+ char *file_addr)
{
char *tftp_argv[] = {"tftp", NULL, NULL, NULL};
return 1;
}
-#endif
-
-static char *fs_argv[5];
-
-static int do_get_ext2(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr)
-{
-#ifdef CONFIG_CMD_EXT2
- fs_argv[0] = "ext2load";
- fs_argv[3] = file_addr;
- fs_argv[4] = (void *)file_path;
-
- if (!do_ext2load(cmdtp, 0, 5, fs_argv))
- return 1;
-#endif
- return -ENOENT;
-}
-
-static int do_get_fat(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr)
-{
-#ifdef CONFIG_CMD_FAT
- fs_argv[0] = "fatload";
- fs_argv[3] = file_addr;
- fs_argv[4] = (void *)file_path;
-
- if (!do_fat_fsload(cmdtp, 0, 5, fs_argv))
- return 1;
-#endif
- return -ENOENT;
-}
-
-static int do_get_any(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr)
-{
-#ifdef CONFIG_CMD_FS_GENERIC
- fs_argv[0] = "load";
- fs_argv[3] = file_addr;
- fs_argv[4] = (void *)file_path;
-
- if (!do_load(cmdtp, 0, 5, fs_argv, FS_TYPE_ANY))
- 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
- * joins it with the bootfile path to get the full path to the target file. If
- * the bootfile path is NULL, we use file_path as is.
- *
- * Returns 1 for success, or < 0 on error.
- */
-static int get_relfile(cmd_tbl_t *cmdtp, const char *file_path,
- unsigned long file_addr)
-{
- size_t path_len;
- char relfile[MAX_TFTP_PATH_LEN+1];
- char addr_buf[18];
- int err;
-
- err = get_bootfile_path(file_path, relfile, sizeof(relfile));
-
- if (err < 0)
- return err;
-
- path_len = strlen(file_path);
- path_len += strlen(relfile);
-
- if (path_len > MAX_TFTP_PATH_LEN) {
- printf("Base path too long (%s%s)\n",
- relfile,
- file_path);
-
- return -ENAMETOOLONG;
- }
-
- strcat(relfile, file_path);
-
- printf("Retrieving file: %s\n", relfile);
-
- sprintf(addr_buf, "%lx", file_addr);
-
- return do_getfile(cmdtp, relfile, addr_buf);
-}
-
-/*
- * Retrieve the file at 'file_path' to the locate given by 'file_addr'. If
- * 'bootfile' was specified in the environment, the path to bootfile will be
- * prepended to 'file_path' and the resulting path will be used.
- *
- * Returns 1 on success, or < 0 for error.
- */
-static int get_pxe_file(cmd_tbl_t *cmdtp, const char *file_path,
- unsigned long file_addr)
-{
- unsigned long config_file_size;
- char *tftp_filesize;
- int err;
- char *buf;
-
- err = get_relfile(cmdtp, file_path, file_addr);
-
- if (err < 0)
- return err;
-
- /*
- * the file comes without a NUL byte at the end, so find out its size
- * and add the NUL byte.
- */
- tftp_filesize = from_env("filesize");
-
- if (!tftp_filesize)
- return -ENOENT;
-
- if (strict_strtoul(tftp_filesize, 16, &config_file_size) < 0)
- return -EINVAL;
-
- buf = map_sysmem(file_addr + config_file_size, 1);
- *buf = '\0';
- unmap_sysmem(buf);
-
- return 1;
-}
-
-#ifdef CONFIG_CMD_NET
-
-#define PXELINUX_DIR "pxelinux.cfg/"
-
-/*
- * Retrieves a file in the 'pxelinux.cfg' folder. Since this uses get_pxe_file
- * to do the hard work, the location of the 'pxelinux.cfg' folder is generated
- * from the bootfile path, as described above.
- *
- * Returns 1 on success or < 0 on error.
- */
-static int get_pxelinux_path(cmd_tbl_t *cmdtp, const char *file,
- unsigned long pxefile_addr_r)
-{
- size_t base_len = strlen(PXELINUX_DIR);
- char path[MAX_TFTP_PATH_LEN+1];
-
- if (base_len + strlen(file) > MAX_TFTP_PATH_LEN) {
- printf("path (%s%s) too long, skipping\n",
- PXELINUX_DIR, file);
- return -ENAMETOOLONG;
- }
-
- sprintf(path, PXELINUX_DIR "%s", file);
-
- return get_pxe_file(cmdtp, path, pxefile_addr_r);
-}
/*
* Looks for a pxe file with a name based on the pxeuuid environment variable.
*
* Returns 1 on success or < 0 on error.
*/
-static int pxe_uuid_path(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
+static int pxe_uuid_path(struct cmd_tbl *cmdtp, unsigned long pxefile_addr_r)
{
char *uuid_str;
*
* Returns 1 on success or < 0 on error.
*/
-static int pxe_mac_path(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
+static int pxe_mac_path(struct cmd_tbl *cmdtp, unsigned long pxefile_addr_r)
{
char mac_str[21];
int err;
*
* Returns 1 on success or < 0 on error.
*/
-static int pxe_ipaddr_paths(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
+static int pxe_ipaddr_paths(struct cmd_tbl *cmdtp, unsigned long pxefile_addr_r)
{
char ip_addr[9];
int mask_pos, err;
return -ENOENT;
}
-
/*
* Entry point for the 'pxe get' command.
* This Follows pxelinux's rules to download a config file from a tftp server.
* Returns 0 on success or 1 on error.
*/
static int
-do_pxe_get(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+do_pxe_get(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
char *pxefile_addr_str;
unsigned long pxefile_addr_r;
return 1;
err = strict_strtoul(pxefile_addr_str, 16,
- (unsigned long *)&pxefile_addr_r);
+ (unsigned long *)&pxefile_addr_r);
if (err < 0)
return 1;
return 1;
}
-#endif
-
-/*
- * Wrapper to make it easier to store the file at file_path in the location
- * specified by envaddr_name. file_path will be joined to the bootfile path,
- * if any is specified.
- *
- * Returns 1 on success or < 0 on error.
- */
-static int get_relfile_envaddr(cmd_tbl_t *cmdtp, const char *file_path, const char *envaddr_name)
-{
- unsigned long file_addr;
- char *envaddr;
-
- envaddr = from_env(envaddr_name);
-
- if (!envaddr)
- return -ENOENT;
-
- if (strict_strtoul(envaddr, 16, &file_addr) < 0)
- return -EINVAL;
-
- return get_relfile(cmdtp, file_path, file_addr);
-}
-
-/*
- * A note on the pxe file parser.
- *
- * We're parsing files that use syslinux grammar, which has a few quirks.
- * String literals must be recognized based on context - there is no
- * quoting or escaping support. There's also nothing to explicitly indicate
- * when a label section completes. We deal with that by ending a label
- * section whenever we see a line that doesn't include.
- *
- * As with the syslinux family, this same file format could be reused in the
- * future for non pxe purposes. The only action it takes during parsing that
- * would throw this off is handling of include files. It assumes we're using
- * pxe, and does a tftp download of a file listed as an include file in the
- * middle of the parsing operation. That could be handled by refactoring it to
- * take a 'include file getter' function.
- */
-
-/*
- * Describes a single label given in a pxe file.
- *
- * Create these with the 'label_create' function given below.
- *
- * name - the name of the menu as given on the 'menu label' line.
- * kernel - the path to the kernel file to use for this label.
- * append - kernel command line to use when booting this label
- * initrd - path to the initrd to use for this label.
- * attempted - 0 if we haven't tried to boot this label, 1 if we have.
- * localboot - 1 if this label specified 'localboot', 0 otherwise.
- * list - lets these form a list, which a pxe_menu struct will hold.
- */
-struct pxe_label {
- char num[4];
- char *name;
- char *menu;
- char *kernel;
- char *append;
- char *initrd;
- char *fdt;
- char *fdtdir;
- int ipappend;
- int attempted;
- int localboot;
- int localboot_val;
- struct list_head list;
-};
-
-/*
- * Describes a pxe menu as given via pxe files.
- *
- * title - the name of the menu as given by a 'menu title' line.
- * default_label - the name of the default label, if any.
- * timeout - time in tenths of a second to wait for a user key-press before
- * booting the default label.
- * prompt - if 0, don't prompt for a choice unless the timeout period is
- * interrupted. If 1, always prompt for a choice regardless of
- * timeout.
- * labels - a list of labels defined for the menu.
- */
-struct pxe_menu {
- char *title;
- char *default_label;
- int timeout;
- int prompt;
- struct list_head labels;
-};
-
-/*
- * Allocates memory for and initializes a pxe_label. This uses malloc, so the
- * result must be free()'d to reclaim the memory.
- *
- * Returns NULL if malloc fails.
- */
-static struct pxe_label *label_create(void)
-{
- struct pxe_label *label;
-
- label = malloc(sizeof(struct pxe_label));
-
- if (!label)
- return NULL;
-
- memset(label, 0, sizeof(struct pxe_label));
-
- return label;
-}
-
-/*
- * Free the memory used by a pxe_label, including that used by its name,
- * kernel, append and initrd members, if they're non NULL.
- *
- * So - be sure to only use dynamically allocated memory for the members of
- * the pxe_label struct, unless you want to clean it up first. These are
- * currently only created by the pxe file parsing code.
- */
-static void label_destroy(struct pxe_label *label)
-{
- if (label->name)
- free(label->name);
-
- if (label->kernel)
- free(label->kernel);
-
- if (label->append)
- free(label->append);
-
- if (label->initrd)
- free(label->initrd);
-
- if (label->fdt)
- free(label->fdt);
-
- if (label->fdtdir)
- free(label->fdtdir);
-
- free(label);
-}
-
-/*
- * Print a label and its string members if they're defined.
- *
- * This is passed as a callback to the menu code for displaying each
- * menu entry.
- */
-static void label_print(void *data)
-{
- struct pxe_label *label = data;
- const char *c = label->menu ? label->menu : label->name;
-
- printf("%s:\t%s\n", label->num, c);
-}
-
-/*
- * Boot a label that specified 'localboot'. This requires that the 'localcmd'
- * environment variable is defined. Its contents will be executed as U-Boot
- * command. If the label specified an 'append' line, its contents will be
- * used to overwrite the contents of the 'bootargs' environment variable prior
- * to running 'localcmd'.
- *
- * Returns 1 on success or < 0 on error.
- */
-static int label_localboot(struct pxe_label *label)
-{
- char *localcmd;
-
- localcmd = from_env("localcmd");
-
- if (!localcmd)
- return -ENOENT;
-
- if (label->append) {
- char bootargs[CONFIG_SYS_CBSIZE];
-
- cli_simple_process_macros(label->append, bootargs);
- env_set("bootargs", bootargs);
- }
-
- debug("running: %s\n", localcmd);
-
- return run_command_list(localcmd, strlen(localcmd), 0);
-}
/*
- * Boot according to the contents of a pxe_label.
- *
- * If we can't boot for any reason, we return. A successful boot never
- * returns.
- *
- * The kernel will be stored in the location given by the 'kernel_addr_r'
- * environment variable.
- *
- * If the label specifies an initrd file, it will be stored in the location
- * given by the 'ramdisk_addr_r' environment variable.
+ * Boots a system using a pxe file
*
- * If the label specifies an 'append' line, its contents will overwrite that
- * of the 'bootargs' environment variable.
+ * Returns 0 on success, 1 on error.
*/
-static int label_boot(cmd_tbl_t *cmdtp, struct pxe_label *label)
+static int
+do_pxe_boot(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
- char *bootm_argv[] = { "bootm", NULL, NULL, NULL, NULL };
- char initrd_str[22];
- char mac_str[29] = "";
- char ip_str[68] = "";
- int bootm_argc = 2;
- int len = 0;
- ulong kernel_addr;
- void *buf;
+ unsigned long pxefile_addr_r;
+ struct pxe_menu *cfg;
+ char *pxefile_addr_str;
- label_print(label);
+ do_getfile = do_get_tftp;
- label->attempted = 1;
+ if (argc == 1) {
+ pxefile_addr_str = from_env("pxefile_addr_r");
+ if (!pxefile_addr_str)
+ return 1;
- if (label->localboot) {
- if (label->localboot_val >= 0)
- label_localboot(label);
- return 0;
+ } else if (argc == 2) {
+ pxefile_addr_str = argv[1];
+ } else {
+ return CMD_RET_USAGE;
}
- if (label->kernel == NULL) {
- printf("No kernel given, skipping %s\n",
- label->name);
+ if (strict_strtoul(pxefile_addr_str, 16, &pxefile_addr_r) < 0) {
+ printf("Invalid pxefile address: %s\n", pxefile_addr_str);
return 1;
}
- if (label->initrd) {
- if (get_relfile_envaddr(cmdtp, label->initrd, "ramdisk_addr_r") < 0) {
- printf("Skipping %s for failure retrieving initrd\n",
- label->name);
- return 1;
- }
-
- bootm_argv[2] = initrd_str;
- strcpy(bootm_argv[2], env_get("ramdisk_addr_r"));
- strcat(bootm_argv[2], ":");
- strcat(bootm_argv[2], env_get("filesize"));
- }
+ cfg = parse_pxefile(cmdtp, pxefile_addr_r);
- if (get_relfile_envaddr(cmdtp, label->kernel, "kernel_addr_r") < 0) {
- printf("Skipping %s for failure retrieving kernel\n",
- label->name);
+ if (!cfg) {
+ printf("Error parsing config file\n");
return 1;
}
- if (label->ipappend & 0x1) {
- sprintf(ip_str, " ip=%s:%s:%s:%s",
- env_get("ipaddr"), env_get("serverip"),
- env_get("gatewayip"), env_get("netmask"));
- }
-
-#ifdef CONFIG_CMD_NET
- if (label->ipappend & 0x2) {
- int err;
- strcpy(mac_str, " BOOTIF=");
- err = format_mac_pxe(mac_str + 8, sizeof(mac_str) - 8);
- if (err < 0)
- mac_str[0] = '\0';
- }
-#endif
+ handle_pxe_menu(cmdtp, cfg);
- if ((label->ipappend & 0x3) || label->append) {
- char bootargs[CONFIG_SYS_CBSIZE] = "";
- char finalbootargs[CONFIG_SYS_CBSIZE];
+ destroy_pxe_menu(cfg);
- if (strlen(label->append ?: "") +
- strlen(ip_str) + strlen(mac_str) + 1 > sizeof(bootargs)) {
- printf("bootarg overflow %zd+%zd+%zd+1 > %zd\n",
- strlen(label->append ?: ""),
- strlen(ip_str), strlen(mac_str),
- sizeof(bootargs));
- return 1;
- }
+ copy_filename(net_boot_file_name, "", sizeof(net_boot_file_name));
- if (label->append)
- strcpy(bootargs, label->append);
- strcat(bootargs, ip_str);
- strcat(bootargs, mac_str);
+ return 0;
+}
- cli_simple_process_macros(bootargs, finalbootargs);
- env_set("bootargs", finalbootargs);
- printf("append: %s\n", finalbootargs);
- }
+static struct cmd_tbl cmd_pxe_sub[] = {
+ U_BOOT_CMD_MKENT(get, 1, 1, do_pxe_get, "", ""),
+ U_BOOT_CMD_MKENT(boot, 2, 1, do_pxe_boot, "", "")
+};
- bootm_argv[1] = env_get("kernel_addr_r");
+static int do_pxe(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+{
+ struct cmd_tbl *cp;
- /*
- * fdt usage is optional:
- * It handles the following scenarios. All scenarios are exclusive
- *
- * Scenario 1: If fdt_addr_r specified and "fdt" label is defined in
- * pxe file, retrieve fdt blob from server. Pass fdt_addr_r to bootm,
- * and adjust argc appropriately.
- *
- * Scenario 2: If there is an fdt_addr specified, pass it along to
- * bootm, and adjust argc appropriately.
- *
- * Scenario 3: fdt blob is not available.
- */
- bootm_argv[3] = env_get("fdt_addr_r");
+ if (argc < 2)
+ return CMD_RET_USAGE;
- /* if fdt label is defined then get fdt from server */
- if (bootm_argv[3]) {
- char *fdtfile = NULL;
- char *fdtfilefree = NULL;
+ is_pxe = true;
- if (label->fdt) {
- fdtfile = label->fdt;
- } else if (label->fdtdir) {
- char *f1, *f2, *f3, *f4, *slash;
+ /* drop initial "pxe" arg */
+ argc--;
+ argv++;
- f1 = env_get("fdtfile");
- if (f1) {
- f2 = "";
- f3 = "";
- f4 = "";
- } else {
- /*
- * For complex cases where this code doesn't
- * generate the correct filename, the board
- * code should set $fdtfile during early boot,
- * or the boot scripts should set $fdtfile
- * before invoking "pxe" or "sysboot".
- */
- f1 = env_get("soc");
- f2 = "-";
- f3 = env_get("board");
- f4 = ".dtb";
- }
+ cp = find_cmd_tbl(argv[0], cmd_pxe_sub, ARRAY_SIZE(cmd_pxe_sub));
- len = strlen(label->fdtdir);
- if (!len)
- slash = "./";
- else if (label->fdtdir[len - 1] != '/')
- slash = "/";
- else
- slash = "";
+ if (cp)
+ return cp->cmd(cmdtp, flag, argc, argv);
- len = strlen(label->fdtdir) + strlen(slash) +
- strlen(f1) + strlen(f2) + strlen(f3) +
- strlen(f4) + 1;
- fdtfilefree = malloc(len);
- if (!fdtfilefree) {
- printf("malloc fail (FDT filename)\n");
- return 1;
- }
+ return CMD_RET_USAGE;
+}
- snprintf(fdtfilefree, len, "%s%s%s%s%s%s",
- label->fdtdir, slash, f1, f2, f3, f4);
- fdtfile = fdtfilefree;
- }
-
- if (fdtfile) {
- int err = get_relfile_envaddr(cmdtp, fdtfile, "fdt_addr_r");
- free(fdtfilefree);
- if (err < 0) {
- printf("Skipping %s for failure retrieving fdt\n",
- label->name);
- return 1;
- }
- } else {
- bootm_argv[3] = NULL;
- }
- }
-
- if (!bootm_argv[3])
- bootm_argv[3] = env_get("fdt_addr");
-
- if (bootm_argv[3]) {
- if (!bootm_argv[2])
- bootm_argv[2] = "-";
- bootm_argc = 4;
- }
-
- kernel_addr = genimg_get_kernel_addr(bootm_argv[1]);
- buf = map_sysmem(kernel_addr, 0);
- /* Try bootm for legacy and FIT format image */
- if (genimg_get_format(buf) != IMAGE_FORMAT_INVALID)
- do_bootm(cmdtp, 0, bootm_argc, bootm_argv);
-#ifdef CONFIG_CMD_BOOTI
- /* Try booting an AArch64 Linux kernel image */
- else
- do_booti(cmdtp, 0, bootm_argc, bootm_argv);
-#elif defined(CONFIG_CMD_BOOTZ)
- /* Try booting a Image */
- else
- do_bootz(cmdtp, 0, bootm_argc, bootm_argv);
-#endif
- unmap_sysmem(buf);
- return 1;
-}
-
-/*
- * Tokens for the pxe file parser.
- */
-enum token_type {
- T_EOL,
- T_STRING,
- T_EOF,
- T_MENU,
- T_TITLE,
- T_TIMEOUT,
- T_LABEL,
- T_KERNEL,
- T_LINUX,
- T_APPEND,
- T_INITRD,
- T_LOCALBOOT,
- T_DEFAULT,
- T_PROMPT,
- T_INCLUDE,
- T_FDT,
- T_FDTDIR,
- T_ONTIMEOUT,
- T_IPAPPEND,
- T_INVALID
-};
-
-/*
- * A token - given by a value and a type.
- */
-struct token {
- char *val;
- enum token_type type;
-};
-
-/*
- * Keywords recognized.
- */
-static const struct token keywords[] = {
- {"menu", T_MENU},
- {"title", T_TITLE},
- {"timeout", T_TIMEOUT},
- {"default", T_DEFAULT},
- {"prompt", T_PROMPT},
- {"label", T_LABEL},
- {"kernel", T_KERNEL},
- {"linux", T_LINUX},
- {"localboot", T_LOCALBOOT},
- {"append", T_APPEND},
- {"initrd", T_INITRD},
- {"include", T_INCLUDE},
- {"devicetree", T_FDT},
- {"fdt", T_FDT},
- {"devicetreedir", T_FDTDIR},
- {"fdtdir", T_FDTDIR},
- {"ontimeout", T_ONTIMEOUT,},
- {"ipappend", T_IPAPPEND,},
- {NULL, T_INVALID}
-};
-
-/*
- * Since pxe(linux) files don't have a token to identify the start of a
- * literal, we have to keep track of when we're in a state where a literal is
- * expected vs when we're in a state a keyword is expected.
- */
-enum lex_state {
- L_NORMAL = 0,
- L_KEYWORD,
- L_SLITERAL
-};
-
-/*
- * get_string retrieves a string from *p and stores it as a token in
- * *t.
- *
- * get_string used for scanning both string literals and keywords.
- *
- * Characters from *p are copied into t-val until a character equal to
- * delim is found, or a NUL byte is reached. If delim has the special value of
- * ' ', any whitespace character will be used as a delimiter.
- *
- * If lower is unequal to 0, uppercase characters will be converted to
- * lowercase in the result. This is useful to make keywords case
- * insensitive.
- *
- * The location of *p is updated to point to the first character after the end
- * of the token - the ending delimiter.
- *
- * On success, the new value of t->val is returned. Memory for t->val is
- * allocated using malloc and must be free()'d to reclaim it. If insufficient
- * memory is available, NULL is returned.
- */
-static char *get_string(char **p, struct token *t, char delim, int lower)
-{
- char *b, *e;
- size_t len, i;
-
- /*
- * b and e both start at the beginning of the input stream.
- *
- * e is incremented until we find the ending delimiter, or a NUL byte
- * is reached. Then, we take e - b to find the length of the token.
- */
- b = e = *p;
-
- while (*e) {
- if ((delim == ' ' && isspace(*e)) || delim == *e)
- break;
- e++;
- }
-
- len = e - b;
-
- /*
- * Allocate memory to hold the string, and copy it in, converting
- * characters to lowercase if lower is != 0.
- */
- t->val = malloc(len + 1);
- if (!t->val)
- return NULL;
-
- for (i = 0; i < len; i++, b++) {
- if (lower)
- t->val[i] = tolower(*b);
- else
- t->val[i] = *b;
- }
-
- t->val[len] = '\0';
-
- /*
- * Update *p so the caller knows where to continue scanning.
- */
- *p = e;
-
- t->type = T_STRING;
-
- return t->val;
-}
-
-/*
- * Populate a keyword token with a type and value.
- */
-static void get_keyword(struct token *t)
-{
- int i;
-
- for (i = 0; keywords[i].val; i++) {
- if (!strcmp(t->val, keywords[i].val)) {
- t->type = keywords[i].type;
- break;
- }
- }
-}
-
-/*
- * Get the next token. We have to keep track of which state we're in to know
- * if we're looking to get a string literal or a keyword.
- *
- * *p is updated to point at the first character after the current token.
- */
-static void get_token(char **p, struct token *t, enum lex_state state)
-{
- char *c = *p;
-
- t->type = T_INVALID;
-
- /* eat non EOL whitespace */
- while (isblank(*c))
- c++;
-
- /*
- * eat comments. note that string literals can't begin with #, but
- * can contain a # after their first character.
- */
- if (*c == '#') {
- while (*c && *c != '\n')
- c++;
- }
-
- if (*c == '\n') {
- t->type = T_EOL;
- c++;
- } else if (*c == '\0') {
- t->type = T_EOF;
- c++;
- } else if (state == L_SLITERAL) {
- get_string(&c, t, '\n', 0);
- } else if (state == L_KEYWORD) {
- /*
- * when we expect a keyword, we first get the next string
- * token delimited by whitespace, and then check if it
- * matches a keyword in our keyword list. if it does, it's
- * converted to a keyword token of the appropriate type, and
- * if not, it remains a string token.
- */
- get_string(&c, t, ' ', 1);
- get_keyword(t);
- }
-
- *p = c;
-}
-
-/*
- * Increment *c until we get to the end of the current line, or EOF.
- */
-static void eol_or_eof(char **c)
-{
- while (**c && **c != '\n')
- (*c)++;
-}
-
-/*
- * All of these parse_* functions share some common behavior.
- *
- * They finish with *c pointing after the token they parse, and return 1 on
- * success, or < 0 on error.
- */
-
-/*
- * Parse a string literal and store a pointer it at *dst. String literals
- * terminate at the end of the line.
- */
-static int parse_sliteral(char **c, char **dst)
-{
- struct token t;
- char *s = *c;
-
- get_token(c, &t, L_SLITERAL);
-
- if (t.type != T_STRING) {
- printf("Expected string literal: %.*s\n", (int)(*c - s), s);
- return -EINVAL;
- }
-
- *dst = t.val;
-
- return 1;
-}
-
-/*
- * Parse a base 10 (unsigned) integer and store it at *dst.
- */
-static int parse_integer(char **c, int *dst)
-{
- struct token t;
- char *s = *c;
-
- get_token(c, &t, L_SLITERAL);
-
- if (t.type != T_STRING) {
- printf("Expected string: %.*s\n", (int)(*c - s), s);
- return -EINVAL;
- }
-
- *dst = simple_strtol(t.val, NULL, 10);
-
- free(t.val);
-
- return 1;
-}
-
-static int parse_pxefile_top(cmd_tbl_t *cmdtp, char *p, unsigned long base,
- struct pxe_menu *cfg, int nest_level);
-
-/*
- * Parse an include statement, and retrieve and parse the file it mentions.
- *
- * base should point to a location where it's safe to store the file, and
- * nest_level should indicate how many nested includes have occurred. For this
- * include, nest_level has already been incremented and doesn't need to be
- * incremented here.
- */
-static int handle_include(cmd_tbl_t *cmdtp, char **c, unsigned long base,
- struct pxe_menu *cfg, int nest_level)
-{
- char *include_path;
- char *s = *c;
- int err;
- char *buf;
- int ret;
-
- err = parse_sliteral(c, &include_path);
-
- if (err < 0) {
- printf("Expected include path: %.*s\n",
- (int)(*c - s), s);
- return err;
- }
-
- err = get_pxe_file(cmdtp, include_path, base);
-
- if (err < 0) {
- printf("Couldn't retrieve %s\n", include_path);
- return err;
- }
-
- buf = map_sysmem(base, 0);
- ret = parse_pxefile_top(cmdtp, buf, base, cfg, nest_level);
- unmap_sysmem(buf);
-
- return ret;
-}
-
-/*
- * Parse lines that begin with 'menu'.
- *
- * base and nest are provided to handle the 'menu include' case.
- *
- * base should point to a location where it's safe to store the included file.
- *
- * nest_level should be 1 when parsing the top level pxe file, 2 when parsing
- * a file it includes, 3 when parsing a file included by that file, and so on.
- */
-static int parse_menu(cmd_tbl_t *cmdtp, char **c, struct pxe_menu *cfg,
- unsigned long base, int nest_level)
-{
- struct token t;
- char *s = *c;
- int err = 0;
-
- get_token(c, &t, L_KEYWORD);
-
- switch (t.type) {
- case T_TITLE:
- err = parse_sliteral(c, &cfg->title);
-
- break;
-
- case T_INCLUDE:
- err = handle_include(cmdtp, c, base, cfg,
- nest_level + 1);
- break;
-
- default:
- printf("Ignoring malformed menu command: %.*s\n",
- (int)(*c - s), s);
- }
-
- if (err < 0)
- return err;
-
- eol_or_eof(c);
-
- return 1;
-}
-
-/*
- * Handles parsing a 'menu line' when we're parsing a label.
- */
-static int parse_label_menu(char **c, struct pxe_menu *cfg,
- struct pxe_label *label)
-{
- struct token t;
- char *s;
-
- s = *c;
-
- get_token(c, &t, L_KEYWORD);
-
- switch (t.type) {
- case T_DEFAULT:
- if (!cfg->default_label)
- cfg->default_label = strdup(label->name);
-
- if (!cfg->default_label)
- return -ENOMEM;
-
- break;
- case T_LABEL:
- parse_sliteral(c, &label->menu);
- break;
- default:
- printf("Ignoring malformed menu command: %.*s\n",
- (int)(*c - s), s);
- }
-
- eol_or_eof(c);
-
- return 0;
-}
-
-/*
- * Parses a label and adds it to the list of labels for a menu.
- *
- * A label ends when we either get to the end of a file, or
- * get some input we otherwise don't have a handler defined
- * for.
- *
- */
-static int parse_label(char **c, struct pxe_menu *cfg)
-{
- struct token t;
- int len;
- char *s = *c;
- struct pxe_label *label;
- int err;
-
- label = label_create();
- if (!label)
- return -ENOMEM;
-
- err = parse_sliteral(c, &label->name);
- if (err < 0) {
- printf("Expected label name: %.*s\n", (int)(*c - s), s);
- label_destroy(label);
- return -EINVAL;
- }
-
- list_add_tail(&label->list, &cfg->labels);
-
- while (1) {
- s = *c;
- get_token(c, &t, L_KEYWORD);
-
- err = 0;
- switch (t.type) {
- case T_MENU:
- err = parse_label_menu(c, cfg, label);
- break;
-
- case T_KERNEL:
- case T_LINUX:
- err = parse_sliteral(c, &label->kernel);
- break;
-
- case T_APPEND:
- err = parse_sliteral(c, &label->append);
- if (label->initrd)
- break;
- s = strstr(label->append, "initrd=");
- if (!s)
- break;
- s += 7;
- len = (int)(strchr(s, ' ') - s);
- label->initrd = malloc(len + 1);
- strncpy(label->initrd, s, len);
- label->initrd[len] = '\0';
-
- break;
-
- case T_INITRD:
- if (!label->initrd)
- err = parse_sliteral(c, &label->initrd);
- break;
-
- case T_FDT:
- if (!label->fdt)
- err = parse_sliteral(c, &label->fdt);
- break;
-
- case T_FDTDIR:
- if (!label->fdtdir)
- err = parse_sliteral(c, &label->fdtdir);
- break;
-
- case T_LOCALBOOT:
- label->localboot = 1;
- err = parse_integer(c, &label->localboot_val);
- break;
-
- case T_IPAPPEND:
- err = parse_integer(c, &label->ipappend);
- break;
-
- case T_EOL:
- break;
-
- default:
- /*
- * put the token back! we don't want it - it's the end
- * of a label and whatever token this is, it's
- * something for the menu level context to handle.
- */
- *c = s;
- return 1;
- }
-
- if (err < 0)
- return err;
- }
-}
-
-/*
- * This 16 comes from the limit pxelinux imposes on nested includes.
- *
- * There is no reason at all we couldn't do more, but some limit helps prevent
- * infinite (until crash occurs) recursion if a file tries to include itself.
- */
-#define MAX_NEST_LEVEL 16
-
-/*
- * Entry point for parsing a menu file. nest_level indicates how many times
- * we've nested in includes. It will be 1 for the top level menu file.
- *
- * Returns 1 on success, < 0 on error.
- */
-static int parse_pxefile_top(cmd_tbl_t *cmdtp, char *p, unsigned long base,
- struct pxe_menu *cfg, int nest_level)
-{
- struct token t;
- char *s, *b, *label_name;
- int err;
-
- b = p;
-
- if (nest_level > MAX_NEST_LEVEL) {
- printf("Maximum nesting (%d) exceeded\n", MAX_NEST_LEVEL);
- return -EMLINK;
- }
-
- while (1) {
- s = p;
-
- get_token(&p, &t, L_KEYWORD);
-
- err = 0;
- switch (t.type) {
- case T_MENU:
- cfg->prompt = 1;
- err = parse_menu(cmdtp, &p, cfg,
- base + ALIGN(strlen(b) + 1, 4),
- nest_level);
- break;
-
- case T_TIMEOUT:
- err = parse_integer(&p, &cfg->timeout);
- break;
-
- case T_LABEL:
- err = parse_label(&p, cfg);
- break;
-
- case T_DEFAULT:
- case T_ONTIMEOUT:
- err = parse_sliteral(&p, &label_name);
-
- if (label_name) {
- if (cfg->default_label)
- free(cfg->default_label);
-
- cfg->default_label = label_name;
- }
-
- break;
-
- case T_INCLUDE:
- err = handle_include(cmdtp, &p,
- base + ALIGN(strlen(b), 4), cfg,
- nest_level + 1);
- break;
-
- case T_PROMPT:
- eol_or_eof(&p);
- break;
-
- case T_EOL:
- break;
-
- case T_EOF:
- return 1;
-
- default:
- printf("Ignoring unknown command: %.*s\n",
- (int)(p - s), s);
- eol_or_eof(&p);
- }
-
- if (err < 0)
- return err;
- }
-}
-
-/*
- * Free the memory used by a pxe_menu and its labels.
- */
-static void destroy_pxe_menu(struct pxe_menu *cfg)
-{
- struct list_head *pos, *n;
- struct pxe_label *label;
-
- if (cfg->title)
- free(cfg->title);
-
- if (cfg->default_label)
- free(cfg->default_label);
-
- list_for_each_safe(pos, n, &cfg->labels) {
- label = list_entry(pos, struct pxe_label, list);
-
- label_destroy(label);
- }
-
- free(cfg);
-}
-
-/*
- * Entry point for parsing a pxe file. This is only used for the top level
- * file.
- *
- * Returns NULL if there is an error, otherwise, returns a pointer to a
- * pxe_menu struct populated with the results of parsing the pxe file (and any
- * files it includes). The resulting pxe_menu struct can be free()'d by using
- * the destroy_pxe_menu() function.
- */
-static struct pxe_menu *parse_pxefile(cmd_tbl_t *cmdtp, unsigned long menucfg)
-{
- struct pxe_menu *cfg;
- char *buf;
- int r;
-
- cfg = malloc(sizeof(struct pxe_menu));
-
- if (!cfg)
- return NULL;
-
- memset(cfg, 0, sizeof(struct pxe_menu));
-
- INIT_LIST_HEAD(&cfg->labels);
-
- buf = map_sysmem(menucfg, 0);
- r = parse_pxefile_top(cmdtp, buf, menucfg, cfg, 1);
- unmap_sysmem(buf);
-
- if (r < 0) {
- destroy_pxe_menu(cfg);
- return NULL;
- }
-
- return cfg;
-}
-
-/*
- * Converts a pxe_menu struct into a menu struct for use with U-Boot's generic
- * menu code.
- */
-static struct menu *pxe_menu_to_menu(struct pxe_menu *cfg)
-{
- struct pxe_label *label;
- struct list_head *pos;
- struct menu *m;
- int err;
- int i = 1;
- char *default_num = NULL;
-
- /*
- * Create a menu and add items for all the labels.
- */
- m = menu_create(cfg->title, cfg->timeout, cfg->prompt, label_print,
- NULL, NULL);
-
- if (!m)
- return NULL;
-
- list_for_each(pos, &cfg->labels) {
- label = list_entry(pos, struct pxe_label, list);
-
- sprintf(label->num, "%d", i++);
- if (menu_item_add(m, label->num, label) != 1) {
- menu_destroy(m);
- return NULL;
- }
- if (cfg->default_label &&
- (strcmp(label->name, cfg->default_label) == 0))
- default_num = label->num;
-
- }
-
- /*
- * After we've created items for each label in the menu, set the
- * menu's default label if one was specified.
- */
- if (default_num) {
- err = menu_default_set(m, default_num);
- if (err != 1) {
- if (err != -ENOENT) {
- menu_destroy(m);
- return NULL;
- }
-
- printf("Missing default: %s\n", cfg->default_label);
- }
- }
-
- return m;
-}
-
-/*
- * Try to boot any labels we have yet to attempt to boot.
- */
-static void boot_unattempted_labels(cmd_tbl_t *cmdtp, struct pxe_menu *cfg)
-{
- struct list_head *pos;
- struct pxe_label *label;
-
- list_for_each(pos, &cfg->labels) {
- label = list_entry(pos, struct pxe_label, list);
-
- if (!label->attempted)
- label_boot(cmdtp, label);
- }
-}
-
-/*
- * Boot the system as prescribed by a pxe_menu.
- *
- * Use the menu system to either get the user's choice or the default, based
- * on config or user input. If there is no default or user's choice,
- * attempted to boot labels in the order they were given in pxe files.
- * If the default or user's choice fails to boot, attempt to boot other
- * labels in the order they were given in pxe files.
- *
- * If this function returns, there weren't any labels that successfully
- * booted, or the user interrupted the menu selection via ctrl+c.
- */
-static void handle_pxe_menu(cmd_tbl_t *cmdtp, struct pxe_menu *cfg)
-{
- void *choice;
- struct menu *m;
- int err;
-
- m = pxe_menu_to_menu(cfg);
- if (!m)
- return;
-
- err = menu_get_choice(m, &choice);
-
- menu_destroy(m);
-
- /*
- * err == 1 means we got a choice back from menu_get_choice.
- *
- * err == -ENOENT if the menu was setup to select the default but no
- * default was set. in that case, we should continue trying to boot
- * labels that haven't been attempted yet.
- *
- * otherwise, the user interrupted or there was some other error and
- * we give up.
- */
-
- if (err == 1) {
- err = label_boot(cmdtp, choice);
- if (!err)
- return;
- } else if (err != -ENOENT) {
- return;
- }
-
- boot_unattempted_labels(cmdtp, cfg);
-}
-
-#ifdef CONFIG_CMD_NET
-/*
- * Boots a system using a pxe file
- *
- * Returns 0 on success, 1 on error.
- */
-static int
-do_pxe_boot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
-{
- unsigned long pxefile_addr_r;
- 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)
- return 1;
-
- } else if (argc == 2) {
- pxefile_addr_str = argv[1];
- } else {
- return CMD_RET_USAGE;
- }
-
- if (strict_strtoul(pxefile_addr_str, 16, &pxefile_addr_r) < 0) {
- printf("Invalid pxefile address: %s\n", pxefile_addr_str);
- return 1;
- }
-
- cfg = parse_pxefile(cmdtp, pxefile_addr_r);
-
- if (cfg == NULL) {
- printf("Error parsing config file\n");
- return 1;
- }
-
- handle_pxe_menu(cmdtp, cfg);
-
- destroy_pxe_menu(cfg);
-
- copy_filename(net_boot_file_name, "", sizeof(net_boot_file_name));
-
- return 0;
-}
-
-static cmd_tbl_t cmd_pxe_sub[] = {
- U_BOOT_CMD_MKENT(get, 1, 1, do_pxe_get, "", ""),
- U_BOOT_CMD_MKENT(boot, 2, 1, do_pxe_boot, "", "")
-};
-
-static int do_pxe(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
-{
- cmd_tbl_t *cp;
-
- if (argc < 2)
- return CMD_RET_USAGE;
-
- is_pxe = true;
-
- /* drop initial "pxe" arg */
- argc--;
- argv++;
-
- cp = find_cmd_tbl(argv[0], cmd_pxe_sub, ARRAY_SIZE(cmd_pxe_sub));
-
- if (cp)
- return cp->cmd(cmdtp, flag, argc, argv);
-
- return CMD_RET_USAGE;
-}
-
-U_BOOT_CMD(
- pxe, 3, 1, do_pxe,
- "commands to get and boot from pxe files",
- "get - try to retrieve a pxe file using tftp\npxe "
- "boot [pxefile_addr_r] - boot from the pxe file at pxefile_addr_r\n"
+U_BOOT_CMD(pxe, 3, 1, do_pxe,
+ "commands to get and boot from pxe files",
+ "get - try to retrieve a pxe file using tftp\n"
+ "pxe boot [pxefile_addr_r] - boot from the pxe file at pxefile_addr_r\n"
);
#endif
-
-/*
- * Boots a system using a local disk syslinux/extlinux file
- *
- * Returns 0 on success, 1 on error.
- */
-static 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;
-
- is_pxe = false;
-
- if (argc > 1 && 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 = env_get("bootfile");
- else {
- filename = argv[5];
- env_set("bootfile", filename);
- }
-
- if (strstr(argv[3], "ext2"))
- do_getfile = do_get_ext2;
- else if (strstr(argv[3], "fat"))
- do_getfile = do_get_fat;
- else if (strstr(argv[3], "any"))
- do_getfile = do_get_any;
- 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(cmdtp, filename, pxefile_addr_r) < 0) {
- printf("Error reading config file\n");
- return 1;
- }
-
- cfg = parse_pxefile(cmdtp, pxefile_addr_r);
-
- if (cfg == NULL) {
- printf("Error parsing config file\n");
- return 1;
- }
-
- if (prompt)
- cfg->prompt = 1;
-
- handle_pxe_menu(cmdtp, cfg);
-
- destroy_pxe_menu(cfg);
-
- return 0;
-}
-
-U_BOOT_CMD(
- sysboot, 7, 1, do_sysboot,
- "command to get and boot from syslinux files",
- "[-p] <interface> <dev[:part]> <ext2|fat|any> [addr] [filename]\n"
- " - load and parse syslinux menu file 'filename' from ext2, fat\n"
- " or any filesystem on 'dev' on 'interface' to address 'addr'"
-);
projects / oweals / u-boot.git / blobdiff