x86: zboot: Move command code into its own file
Much of the code in zimage.c deals with the zboot command. Move it into
a sepatate zboot.c file within the cmd/ directory. This will eventually
allow use of the zimage logic without the command being enabled.
Signed-off-by: Simon Glass <sjg@chromium.org>
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
+);