diff options
Diffstat (limited to 'cmd/x86/zboot.c')
| -rw-r--r-- | cmd/x86/zboot.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/cmd/x86/zboot.c b/cmd/x86/zboot.c new file mode 100644 index 0000000..c9375fb --- /dev/null +++ b/cmd/x86/zboot.c @@ -0,0 +1,203 @@ +// 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[]) +{ + const char *s; + + memset(&state, '\0', sizeof(state)); + if (argc >= 2) { + /* argv[1] holds the address of the bzImage */ + s = argv[1]; + } else { + s = env_get("fileaddr"); + } + + if (s) + state.bzimage_addr = hextoul(s, NULL); + + if (argc >= 3) { + /* argv[2] holds the size of the bzImage */ + state.bzimage_size = hextoul(argv[2], NULL); + } + + if (argc >= 4) + state.initrd_addr = hextoul(argv[3], NULL); + if (argc >= 5) + state.initrd_size = hextoul(argv[4], NULL); + if (argc >= 6) { + /* + * When the base_ptr is passed in, we assume that the image is + * already loaded at the address given by argv[1] and therefore + * the original bzImage is somewhere else, or not accessible. + * In any case, we don't need access to the bzImage since all + * the processing is assumed to be done. + * + * So set the base_ptr to the given address, use this arg as the + * load address and set bzimage_addr to 0 so we know that it + * cannot be proceesed (or processed again). + */ + state.base_ptr = (void *)hextoul(argv[5], NULL); + state.load_address = state.bzimage_addr; + state.bzimage_addr = 0; + } + if (argc >= 7) + state.cmdline = env_get(argv[6]); + + return 0; +} + +static int do_zboot_load(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + if (zboot_load()) + return CMD_RET_FAILURE; + + if (env_set_hex("zbootbase", map_to_sysmem(state.base_ptr)) || + env_set_hex("zbootaddr", state.load_address)) + return CMD_RET_FAILURE; + + return 0; +} + +static int do_zboot_setup(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + struct boot_params *base_ptr = state.base_ptr; + + if (!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; + } + + return 0; +} + +static int do_zboot_info(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + printf("Kernel loaded at %08lx, setup_base=%p\n", + state.load_address, state.base_ptr); + + return 0; +} + +static int do_zboot_go(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + int ret; + + ret = zboot_go(); + printf("Kernel returned! (err=%d)\n", ret); + + return CMD_RET_FAILURE; +} + +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 i; + + for (i = 0; i < ZBOOT_STATE_COUNT; i++) { + struct cmd_tbl *cmd = &zboot_subcmds[i]; + int mask = 1 << i; + int ret; + + if (mask & state_mask) { + ret = cmd->cmd(cmd, 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 +); |