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Diffstat (limited to 'cmd/x86/zboot.c')
| -rw-r--r-- | cmd/x86/zboot.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/cmd/x86/zboot.c b/cmd/x86/zboot.c new file mode 100644 index 0000000..addf28c --- /dev/null +++ b/cmd/x86/zboot.c @@ -0,0 +1,182 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * (C) Copyright 2002 + * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se> + */ + +#include <command.h> +#include <mapmem.h> +#include <vsprintf.h> +#include <asm/zimage.h> + +static int do_zboot_start(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + ulong bzimage_addr = 0, bzimage_size, initrd_addr, initrd_size; + ulong base_addr; + const char *s, *cmdline; + + /* argv[1] holds the address of the bzImage */ + s = cmd_arg1(argc, argv) ? : env_get("fileaddr"); + if (s) + bzimage_addr = hextoul(s, NULL); + bzimage_size = argc > 2 ? hextoul(argv[2], NULL) : 0; + initrd_addr = argc > 3 ? hextoul(argv[3], NULL) : 0; + initrd_size = argc > 4 ? hextoul(argv[4], NULL) : 0; + base_addr = argc > 5 ? hextoul(argv[5], NULL) : 0; + cmdline = argc > 6 ? env_get(argv[6]) : NULL; + + zboot_start(bzimage_addr, bzimage_size, initrd_addr, initrd_size, + base_addr, cmdline); + + return 0; +} + +static int do_zboot_load(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + int ret; + + ret = zboot_load(); + if (ret) + return ret; + + return 0; +} + +static int do_zboot_setup(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + if (!state.base_ptr) { + printf("base is not set: use 'zboot load' first\n"); + return CMD_RET_FAILURE; + } + if (zboot_setup()) { + puts("Setting up boot parameters failed ...\n"); + return CMD_RET_FAILURE; + } + + if (zboot_setup()) + return CMD_RET_FAILURE; + + return 0; +} + +static int do_zboot_info(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + zboot_info(); + + return 0; +} + +static int do_zboot_go(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + int ret; + + ret = zboot_go(); + if (ret) { + printf("Kernel returned! (err=%d)\n", ret); + return CMD_RET_FAILURE; + } + + return 0; +} + +static int do_zboot_dump(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + struct boot_params *base_ptr = state.base_ptr; + + if (argc > 1) + base_ptr = (void *)hextoul(argv[1], NULL); + if (!base_ptr) { + printf("No zboot setup_base\n"); + return CMD_RET_FAILURE; + } + zimage_dump(base_ptr, true); + + return 0; +} + +/* Note: This defines the complete_zboot() function */ +U_BOOT_SUBCMDS(zboot, + U_BOOT_CMD_MKENT(start, 8, 1, do_zboot_start, "", ""), + U_BOOT_CMD_MKENT(load, 1, 1, do_zboot_load, "", ""), + U_BOOT_CMD_MKENT(setup, 1, 1, do_zboot_setup, "", ""), + U_BOOT_CMD_MKENT(info, 1, 1, do_zboot_info, "", ""), + U_BOOT_CMD_MKENT(go, 1, 1, do_zboot_go, "", ""), + U_BOOT_CMD_MKENT(dump, 2, 1, do_zboot_dump, "", ""), +) + +int do_zboot_states(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[], int state_mask) +{ + int ret; + + if (flag & ZBOOT_STATE_START) + ret = do_zboot_start(cmdtp, flag, argc, argv); + if (!ret && (flag & ZBOOT_STATE_LOAD)) + ret = do_zboot_load(cmdtp, flag, argc, argv); + if (!ret && (flag & ZBOOT_STATE_SETUP)) + ret = do_zboot_setup(cmdtp, flag, argc, argv); + if (!ret && (flag & ZBOOT_STATE_INFO)) + ret = do_zboot_info(cmdtp, flag, argc, argv); + if (!ret && (flag & ZBOOT_STATE_GO)) + ret = do_zboot_go(cmdtp, flag, argc, argv); + if (ret) + return ret; + + return 0; +} + +int do_zboot_parent(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[], int *repeatable) +{ + /* determine if we have a sub command */ + if (argc > 1) { + char *endp; + + hextoul(argv[1], &endp); + /* + * endp pointing to nul means that argv[1] was just a valid + * number, so pass it along to the normal processing + */ + if (*endp) + return do_zboot(cmdtp, flag, argc, argv, repeatable); + } + + do_zboot_states(cmdtp, flag, argc, argv, ZBOOT_STATE_START | + ZBOOT_STATE_LOAD | ZBOOT_STATE_SETUP | + ZBOOT_STATE_INFO | ZBOOT_STATE_GO); + + return CMD_RET_FAILURE; +} + +U_BOOT_CMDREP_COMPLETE( + zboot, 8, do_zboot_parent, "Boot bzImage", + "[addr] [size] [initrd addr] [initrd size] [setup] [cmdline]\n" + " addr - The optional starting address of the bzimage.\n" + " If not set it defaults to the environment\n" + " variable \"fileaddr\".\n" + " size - The optional size of the bzimage. Defaults to\n" + " zero.\n" + " initrd addr - The address of the initrd image to use, if any.\n" + " initrd size - The size of the initrd image to use, if any.\n" + " setup - The address of the kernel setup region, if this\n" + " is not at addr\n" + " cmdline - Environment variable containing the kernel\n" + " command line, to override U-Boot's normal\n" + " cmdline generation\n" + "\n" + "Sub-commands to do part of the zboot sequence:\n" + "\tstart [addr [arg ...]] - specify arguments\n" + "\tload - load OS image\n" + "\tsetup - set up table\n" + "\tinfo - show summary info\n" + "\tgo - start OS\n" + "\tdump [addr] - dump info (optional address of boot params)", + complete_zboot +); |