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@@ -6,23 +6,11 @@
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#include <common.h>
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#include <command.h>
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-#include <env.h>
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-#include <malloc.h>
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-#include <mapmem.h>
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-#include <lcd.h>
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-#include <linux/string.h>
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-#include <linux/ctype.h>
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-#include <errno.h>
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-#include <linux/list.h>
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#include <fs.h>
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-#include <splash.h>
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-#include <asm/io.h>
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-#include "menu.h"
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-#include "cli.h"
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-
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-#define MAX_TFTP_PATH_LEN 127
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+#include "pxe_utils.h"
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+#ifdef CONFIG_CMD_NET
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const char *pxe_default_paths[] = {
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#ifdef CONFIG_SYS_SOC
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#ifdef CONFIG_SYS_BOARD
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@@ -35,85 +23,6 @@ const char *pxe_default_paths[] = {
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NULL
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};
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-static bool is_pxe;
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-
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-#ifdef CONFIG_CMD_NET
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-/*
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- * Convert an ethaddr from the environment to the format used by pxelinux
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- * filenames based on mac addresses. Convert's ':' to '-', and adds "01-" to
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- * the beginning of the ethernet address to indicate a hardware type of
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- * Ethernet. Also converts uppercase hex characters into lowercase, to match
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- * pxelinux's behavior.
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- *
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- * Returns 1 for success, -ENOENT if 'ethaddr' is undefined in the
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- * environment, or some other value < 0 on error.
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- */
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-static int format_mac_pxe(char *outbuf, size_t outbuf_len)
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-{
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- uchar ethaddr[6];
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-
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- if (outbuf_len < 21) {
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- printf("outbuf is too small (%zd < 21)\n", outbuf_len);
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-
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- return -EINVAL;
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- }
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-
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- if (!eth_env_get_enetaddr_by_index("eth", eth_get_dev_index(), ethaddr))
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- return -ENOENT;
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-
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- sprintf(outbuf, "01-%02x-%02x-%02x-%02x-%02x-%02x",
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- ethaddr[0], ethaddr[1], ethaddr[2],
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- ethaddr[3], ethaddr[4], ethaddr[5]);
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-
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- return 1;
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-}
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-#endif
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-
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-/*
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- * Returns the directory the file specified in the bootfile env variable is
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- * in. If bootfile isn't defined in the environment, return NULL, which should
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- * be interpreted as "don't prepend anything to paths".
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- */
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-static int get_bootfile_path(const char *file_path, char *bootfile_path,
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- size_t bootfile_path_size)
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-{
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- char *bootfile, *last_slash;
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- size_t path_len = 0;
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-
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- /* Only syslinux allows absolute paths */
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- if (file_path[0] == '/' && !is_pxe)
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- goto ret;
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-
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- bootfile = from_env("bootfile");
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-
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- if (!bootfile)
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- goto ret;
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-
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- last_slash = strrchr(bootfile, '/');
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-
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- if (last_slash == NULL)
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- goto ret;
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-
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- path_len = (last_slash - bootfile) + 1;
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-
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- if (bootfile_path_size < path_len) {
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- printf("bootfile_path too small. (%zd < %zd)\n",
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- bootfile_path_size, path_len);
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-
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- return -1;
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- }
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-
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- strncpy(bootfile_path, bootfile, path_len);
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-
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- ret:
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- bootfile_path[path_len] = '\0';
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-
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- return 1;
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-}
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-
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-static int (*do_getfile)(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr);
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-
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-#ifdef CONFIG_CMD_NET
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static int do_get_tftp(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr)
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{
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char *tftp_argv[] = {"tftp", NULL, NULL, NULL};
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@@ -169,114 +78,8 @@ static int do_get_any(cmd_tbl_t *cmdtp, const char *file_path, char *file_addr)
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return -ENOENT;
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}
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-/*
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- * As in pxelinux, paths to files referenced from files we retrieve are
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- * relative to the location of bootfile. get_relfile takes such a path and
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- * joins it with the bootfile path to get the full path to the target file. If
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- * the bootfile path is NULL, we use file_path as is.
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- *
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- * Returns 1 for success, or < 0 on error.
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- */
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-static int get_relfile(cmd_tbl_t *cmdtp, const char *file_path,
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- unsigned long file_addr)
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-{
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- size_t path_len;
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- char relfile[MAX_TFTP_PATH_LEN+1];
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- char addr_buf[18];
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- int err;
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-
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- err = get_bootfile_path(file_path, relfile, sizeof(relfile));
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-
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- if (err < 0)
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- return err;
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-
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- path_len = strlen(file_path);
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- path_len += strlen(relfile);
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-
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- if (path_len > MAX_TFTP_PATH_LEN) {
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- printf("Base path too long (%s%s)\n",
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- relfile,
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- file_path);
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-
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- return -ENAMETOOLONG;
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- }
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-
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- strcat(relfile, file_path);
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-
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- printf("Retrieving file: %s\n", relfile);
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-
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- sprintf(addr_buf, "%lx", file_addr);
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-
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- return do_getfile(cmdtp, relfile, addr_buf);
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-}
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-
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-/*
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- * Retrieve the file at 'file_path' to the locate given by 'file_addr'. If
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- * 'bootfile' was specified in the environment, the path to bootfile will be
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- * prepended to 'file_path' and the resulting path will be used.
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- *
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- * Returns 1 on success, or < 0 for error.
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- */
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-static int get_pxe_file(cmd_tbl_t *cmdtp, const char *file_path,
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- unsigned long file_addr)
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-{
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- unsigned long config_file_size;
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- char *tftp_filesize;
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- int err;
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- char *buf;
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-
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- err = get_relfile(cmdtp, file_path, file_addr);
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-
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- if (err < 0)
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- return err;
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-
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- /*
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- * the file comes without a NUL byte at the end, so find out its size
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- * and add the NUL byte.
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- */
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- tftp_filesize = from_env("filesize");
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-
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- if (!tftp_filesize)
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- return -ENOENT;
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-
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- if (strict_strtoul(tftp_filesize, 16, &config_file_size) < 0)
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- return -EINVAL;
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-
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- buf = map_sysmem(file_addr + config_file_size, 1);
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- *buf = '\0';
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- unmap_sysmem(buf);
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-
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- return 1;
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-}
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-
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#ifdef CONFIG_CMD_NET
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-#define PXELINUX_DIR "pxelinux.cfg/"
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-
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-/*
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- * Retrieves a file in the 'pxelinux.cfg' folder. Since this uses get_pxe_file
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- * to do the hard work, the location of the 'pxelinux.cfg' folder is generated
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- * from the bootfile path, as described above.
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- *
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- * Returns 1 on success or < 0 on error.
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- */
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-static int get_pxelinux_path(cmd_tbl_t *cmdtp, const char *file,
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- unsigned long pxefile_addr_r)
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-{
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- size_t base_len = strlen(PXELINUX_DIR);
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- char path[MAX_TFTP_PATH_LEN+1];
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-
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- if (base_len + strlen(file) > MAX_TFTP_PATH_LEN) {
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- printf("path (%s%s) too long, skipping\n",
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- PXELINUX_DIR, file);
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- return -ENAMETOOLONG;
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- }
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-
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- sprintf(path, PXELINUX_DIR "%s", file);
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-
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- return get_pxe_file(cmdtp, path, pxefile_addr_r);
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-}
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-
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/*
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* Looks for a pxe file with a name based on the pxeuuid environment variable.
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*
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@@ -338,7 +141,6 @@ static int pxe_ipaddr_paths(cmd_tbl_t *cmdtp, unsigned long pxefile_addr_r)
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return -ENOENT;
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}
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-
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/*
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* Entry point for the 'pxe get' command.
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* This Follows pxelinux's rules to download a config file from a tftp server.
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@@ -400,1223 +202,7 @@ do_pxe_get(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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return 1;
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}
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-#endif
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-
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-/*
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- * Wrapper to make it easier to store the file at file_path in the location
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- * specified by envaddr_name. file_path will be joined to the bootfile path,
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- * if any is specified.
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- *
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- * Returns 1 on success or < 0 on error.
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- */
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-static int get_relfile_envaddr(cmd_tbl_t *cmdtp, const char *file_path, const char *envaddr_name)
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-{
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- unsigned long file_addr;
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- char *envaddr;
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-
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- envaddr = from_env(envaddr_name);
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-
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- if (!envaddr)
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- return -ENOENT;
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-
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- if (strict_strtoul(envaddr, 16, &file_addr) < 0)
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- return -EINVAL;
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-
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- return get_relfile(cmdtp, file_path, file_addr);
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-}
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-
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-/*
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- * A note on the pxe file parser.
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- *
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- * We're parsing files that use syslinux grammar, which has a few quirks.
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- * String literals must be recognized based on context - there is no
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- * quoting or escaping support. There's also nothing to explicitly indicate
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- * when a label section completes. We deal with that by ending a label
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- * section whenever we see a line that doesn't include.
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- *
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- * As with the syslinux family, this same file format could be reused in the
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- * future for non pxe purposes. The only action it takes during parsing that
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- * would throw this off is handling of include files. It assumes we're using
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- * pxe, and does a tftp download of a file listed as an include file in the
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- * middle of the parsing operation. That could be handled by refactoring it to
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- * take a 'include file getter' function.
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- */
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-
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-/*
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- * Describes a single label given in a pxe file.
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- *
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- * Create these with the 'label_create' function given below.
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- *
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- * name - the name of the menu as given on the 'menu label' line.
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- * kernel - the path to the kernel file to use for this label.
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- * append - kernel command line to use when booting this label
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- * initrd - path to the initrd to use for this label.
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- * attempted - 0 if we haven't tried to boot this label, 1 if we have.
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- * localboot - 1 if this label specified 'localboot', 0 otherwise.
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- * list - lets these form a list, which a pxe_menu struct will hold.
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- */
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-struct pxe_label {
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- char num[4];
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- char *name;
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- char *menu;
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- char *kernel;
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- char *config;
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- char *append;
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- char *initrd;
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- char *fdt;
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- char *fdtdir;
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- int ipappend;
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- int attempted;
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- int localboot;
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- int localboot_val;
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- struct list_head list;
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-};
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-
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-/*
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- * Describes a pxe menu as given via pxe files.
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- *
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- * title - the name of the menu as given by a 'menu title' line.
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- * default_label - the name of the default label, if any.
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- * bmp - the bmp file name which is displayed in background
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- * timeout - time in tenths of a second to wait for a user key-press before
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- * booting the default label.
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- * prompt - if 0, don't prompt for a choice unless the timeout period is
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- * interrupted. If 1, always prompt for a choice regardless of
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- * timeout.
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- * labels - a list of labels defined for the menu.
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- */
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-struct pxe_menu {
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- char *title;
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- char *default_label;
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- char *bmp;
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- int timeout;
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- int prompt;
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- struct list_head labels;
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-};
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-
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-/*
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- * Allocates memory for and initializes a pxe_label. This uses malloc, so the
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- * result must be free()'d to reclaim the memory.
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- *
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- * Returns NULL if malloc fails.
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- */
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-static struct pxe_label *label_create(void)
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-{
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- struct pxe_label *label;
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-
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- label = malloc(sizeof(struct pxe_label));
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-
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- if (!label)
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- return NULL;
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-
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- memset(label, 0, sizeof(struct pxe_label));
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- return label;
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-}
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-
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-/*
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- * Free the memory used by a pxe_label, including that used by its name,
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- * kernel, append and initrd members, if they're non NULL.
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- *
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- * So - be sure to only use dynamically allocated memory for the members of
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- * the pxe_label struct, unless you want to clean it up first. These are
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- * currently only created by the pxe file parsing code.
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- */
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-static void label_destroy(struct pxe_label *label)
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-{
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- if (label->name)
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- free(label->name);
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-
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- if (label->kernel)
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- free(label->kernel);
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-
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- if (label->config)
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- free(label->config);
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-
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- if (label->append)
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- free(label->append);
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-
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- if (label->initrd)
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- free(label->initrd);
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-
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- if (label->fdt)
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- free(label->fdt);
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-
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- if (label->fdtdir)
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- free(label->fdtdir);
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-
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- free(label);
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-}
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-
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-/*
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- * Print a label and its string members if they're defined.
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- *
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- * This is passed as a callback to the menu code for displaying each
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- * menu entry.
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- */
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-static void label_print(void *data)
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-{
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- struct pxe_label *label = data;
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- const char *c = label->menu ? label->menu : label->name;
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-
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- printf("%s:\t%s\n", label->num, c);
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-}
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-
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-/*
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- * Boot a label that specified 'localboot'. This requires that the 'localcmd'
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- * environment variable is defined. Its contents will be executed as U-Boot
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- * command. If the label specified an 'append' line, its contents will be
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- * used to overwrite the contents of the 'bootargs' environment variable prior
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- * to running 'localcmd'.
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- *
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- * Returns 1 on success or < 0 on error.
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- */
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-static int label_localboot(struct pxe_label *label)
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-{
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- char *localcmd;
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-
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- localcmd = from_env("localcmd");
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-
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- if (!localcmd)
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- return -ENOENT;
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-
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- if (label->append) {
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- char bootargs[CONFIG_SYS_CBSIZE];
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-
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- cli_simple_process_macros(label->append, bootargs);
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|
- 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.
|
|
|
- *
|
|
|
- * If the label specifies an 'append' line, its contents will overwrite that
|
|
|
- * of the 'bootargs' environment variable.
|
|
|
- */
|
|
|
-static int label_boot(cmd_tbl_t *cmdtp, struct pxe_label *label)
|
|
|
-{
|
|
|
- char *bootm_argv[] = { "bootm", NULL, NULL, NULL, NULL };
|
|
|
- char initrd_str[28];
|
|
|
- char mac_str[29] = "";
|
|
|
- char ip_str[68] = "";
|
|
|
- char *fit_addr = NULL;
|
|
|
- int bootm_argc = 2;
|
|
|
- int len = 0;
|
|
|
- ulong kernel_addr;
|
|
|
- void *buf;
|
|
|
-
|
|
|
- label_print(label);
|
|
|
-
|
|
|
- label->attempted = 1;
|
|
|
-
|
|
|
- if (label->localboot) {
|
|
|
- if (label->localboot_val >= 0)
|
|
|
- label_localboot(label);
|
|
|
- return 0;
|
|
|
- }
|
|
|
-
|
|
|
- if (label->kernel == NULL) {
|
|
|
- printf("No kernel given, skipping %s\n",
|
|
|
- label->name);
|
|
|
- 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;
|
|
|
- strncpy(bootm_argv[2], env_get("ramdisk_addr_r"), 18);
|
|
|
- strcat(bootm_argv[2], ":");
|
|
|
- strncat(bootm_argv[2], env_get("filesize"), 9);
|
|
|
- bootm_argc = 3;
|
|
|
- }
|
|
|
-
|
|
|
- if (get_relfile_envaddr(cmdtp, label->kernel, "kernel_addr_r") < 0) {
|
|
|
- printf("Skipping %s for failure retrieving kernel\n",
|
|
|
- label->name);
|
|
|
- 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
|
|
|
-
|
|
|
- if ((label->ipappend & 0x3) || label->append) {
|
|
|
- char bootargs[CONFIG_SYS_CBSIZE] = "";
|
|
|
- char finalbootargs[CONFIG_SYS_CBSIZE];
|
|
|
-
|
|
|
- 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;
|
|
|
- } else {
|
|
|
- if (label->append)
|
|
|
- strncpy(bootargs, label->append,
|
|
|
- sizeof(bootargs));
|
|
|
- strcat(bootargs, ip_str);
|
|
|
- strcat(bootargs, mac_str);
|
|
|
-
|
|
|
- cli_simple_process_macros(bootargs, finalbootargs);
|
|
|
- env_set("bootargs", finalbootargs);
|
|
|
- printf("append: %s\n", finalbootargs);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- bootm_argv[1] = env_get("kernel_addr_r");
|
|
|
- /* for FIT, append the configuration identifier */
|
|
|
- if (label->config) {
|
|
|
- int len = strlen(bootm_argv[1]) + strlen(label->config) + 1;
|
|
|
-
|
|
|
- fit_addr = malloc(len);
|
|
|
- if (!fit_addr) {
|
|
|
- printf("malloc fail (FIT address)\n");
|
|
|
- return 1;
|
|
|
- }
|
|
|
- snprintf(fit_addr, len, "%s%s", bootm_argv[1], label->config);
|
|
|
- bootm_argv[1] = fit_addr;
|
|
|
- }
|
|
|
-
|
|
|
- /*
|
|
|
- * 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 fdt label is defined then get fdt from server */
|
|
|
- if (bootm_argv[3]) {
|
|
|
- char *fdtfile = NULL;
|
|
|
- char *fdtfilefree = NULL;
|
|
|
-
|
|
|
- if (label->fdt) {
|
|
|
- fdtfile = label->fdt;
|
|
|
- } else if (label->fdtdir) {
|
|
|
- char *f1, *f2, *f3, *f4, *slash;
|
|
|
-
|
|
|
- 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";
|
|
|
- }
|
|
|
-
|
|
|
- len = strlen(label->fdtdir);
|
|
|
- if (!len)
|
|
|
- slash = "./";
|
|
|
- else if (label->fdtdir[len - 1] != '/')
|
|
|
- slash = "/";
|
|
|
- else
|
|
|
- slash = "";
|
|
|
-
|
|
|
- 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");
|
|
|
- goto cleanup;
|
|
|
- }
|
|
|
-
|
|
|
- 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);
|
|
|
- goto cleanup;
|
|
|
- }
|
|
|
- } 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);
|
|
|
-
|
|
|
-cleanup:
|
|
|
- if (fit_addr)
|
|
|
- free(fit_addr);
|
|
|
- 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_BACKGROUND,
|
|
|
- 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,},
|
|
|
- {"background", T_BACKGROUND,},
|
|
|
- {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;
|
|
|
-
|
|
|
- case T_BACKGROUND:
|
|
|
- err = parse_sliteral(c, &cfg->bmp);
|
|
|
- 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;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * Handles parsing a 'kernel' label.
|
|
|
- * expecting "filename" or "<fit_filename>#cfg"
|
|
|
- */
|
|
|
-static int parse_label_kernel(char **c, struct pxe_label *label)
|
|
|
-{
|
|
|
- char *s;
|
|
|
- int err;
|
|
|
-
|
|
|
- err = parse_sliteral(c, &label->kernel);
|
|
|
- if (err < 0)
|
|
|
- return err;
|
|
|
-
|
|
|
- s = strstr(label->kernel, "#");
|
|
|
- if (!s)
|
|
|
- return 1;
|
|
|
-
|
|
|
- label->config = malloc(strlen(s) + 1);
|
|
|
- if (!label->config)
|
|
|
- return -ENOMEM;
|
|
|
-
|
|
|
- strcpy(label->config, s);
|
|
|
- *s = 0;
|
|
|
-
|
|
|
- return 1;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * 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_label_kernel(c, label);
|
|
|
- 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, DIV_ROUND_UP(cfg->timeout, 10),
|
|
|
- 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;
|
|
|
-
|
|
|
-#ifdef CONFIG_CMD_BMP
|
|
|
- /* display BMP if available */
|
|
|
- if (cfg->bmp) {
|
|
|
- if (get_relfile(cmdtp, cfg->bmp, load_addr)) {
|
|
|
- run_command("cls", 0);
|
|
|
- bmp_display(load_addr,
|
|
|
- BMP_ALIGN_CENTER, BMP_ALIGN_CENTER);
|
|
|
- } else {
|
|
|
- printf("Skipping background bmp %s for failure\n",
|
|
|
- cfg->bmp);
|
|
|
- }
|
|
|
- }
|
|
|
-#endif
|
|
|
-
|
|
|
- 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
|
|
|
*
|