diff options
| -rw-r--r-- | arch/x86/include/asm/zimage.h | 31 | ||||
| -rw-r--r-- | arch/x86/lib/zimage.c | 199 | ||||
| -rw-r--r-- | cmd/x86/Makefile | 1 | ||||
| -rw-r--r-- | cmd/x86/zboot.c | 203 |
4 files changed, 239 insertions, 195 deletions
diff --git a/arch/x86/include/asm/zimage.h b/arch/x86/include/asm/zimage.h index a91cfb2..ac6683e 100644 --- a/arch/x86/include/asm/zimage.h +++ b/arch/x86/include/asm/zimage.h @@ -72,6 +72,37 @@ struct zboot_state { extern struct zboot_state state; /** + * zimage_dump() - Dump information about a zimage + * + * @base_ptr: Pointer to the boot parameters + * @show_cmdline: true to show the kernel command line + */ +void zimage_dump(struct boot_params *base_ptr, bool show_cmdline); + +/** + * zboot_load() - Load a zimage + * + * Load the zimage into the correct place + * + * Return: 0 if OK, -ve on error + */ +int zboot_load(void); + +/** + * zboot_setup() - Set up the zboot image reeady for booting + * + * Return: 0 if OK, -ve on error + */ +int zboot_setup(void); + +/** + * zboot_go() - Start the image + * + * Return: 0 if OK, -ve on error + */ +int zboot_go(void); + +/** * load_zimage() - Load a zImage or bzImage * * This copies an image into the standard location ready for setup diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c index b04d39b..1d1249f 100644 --- a/arch/x86/lib/zimage.c +++ b/arch/x86/lib/zimage.c @@ -56,6 +56,7 @@ DECLARE_GLOBAL_DATA_PTR; #define COMMAND_LINE_SIZE 2048 +/* Current state of the boot */ struct zboot_state state; static void build_command_line(char *command_line, int auto_boot) @@ -366,54 +367,7 @@ int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot, return 0; } -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 zboot_load(void) +int zboot_load(void) { struct boot_params *base_ptr; @@ -438,20 +392,7 @@ static int zboot_load(void) 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 zboot_setup(void) +int zboot_setup(void) { struct boot_params *base_ptr = state.base_ptr; int ret; @@ -465,33 +406,7 @@ static int zboot_setup(void) 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 zboot_go(void) +int zboot_go(void) { struct boot_params *params = state.base_ptr; struct setup_header *hdr = ¶ms->hdr; @@ -515,17 +430,6 @@ static int zboot_go(void) return ret; } -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; -} - int zboot_start(ulong addr, ulong size, ulong initrd, ulong initrd_size, ulong base, char *cmdline) { @@ -741,98 +645,3 @@ void zimage_dump(struct boot_params *base_ptr, bool show_cmdline) if (get_boot_protocol(hdr, false) >= 0x215) print_num("Kernel info offset", hdr->kernel_info_offset); } - -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 -); diff --git a/cmd/x86/Makefile b/cmd/x86/Makefile index 5f82204..b1f39d3 100644 --- a/cmd/x86/Makefile +++ b/cmd/x86/Makefile @@ -5,3 +5,4 @@ obj-y += mtrr.o obj-$(CONFIG_CMD_EXCEPTION) += exception.o obj-$(CONFIG_USE_HOB) += hob.o obj-$(CONFIG_HAVE_FSP) += fsp.o +obj-$(CONFIG_CMD_ZBOOT) += zboot.o 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 +); |