1 files changed, 123 insertions, 0 deletions
diff --git a/cmd/qfw.c b/cmd/qfw.c
new file mode 100644
index 00000000000..1b108118658
--- /dev/null
+++ b/cmd/qfw.c
@@ -0,0 +1,123 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com>
+ */
+
+#include <command.h>
+#include <env.h>
+#include <errno.h>
+#include <qfw.h>
+#include <dm.h>
+
+static struct udevice *qfw_dev;
+
+static int qemu_fwcfg_cmd_list_firmware(void)
+{
+	int ret;
+	struct fw_cfg_file_iter iter;
+	struct fw_file *file;
+
+	/* make sure fw_list is loaded */
+	ret = qfw_read_firmware_list(qfw_dev);
+	if (ret)
+		return ret;
+
+	for (file = qfw_file_iter_init(qfw_dev, &iter);
+	     !qfw_file_iter_end(&iter);
+	     file = qfw_file_iter_next(&iter)) {
+		printf("%08lx %-56s\n", file->addr, file->cfg.name);
+	}
+
+	return 0;
+}
+
+static int qemu_fwcfg_do_list(struct cmd_tbl *cmdtp, int flag,
+			      int argc, char *const argv[])
+{
+	if (qemu_fwcfg_cmd_list_firmware() < 0)
+		return CMD_RET_FAILURE;
+
+	return 0;
+}
+
+static int qemu_fwcfg_do_cpus(struct cmd_tbl *cmdtp, int flag,
+			      int argc, char *const argv[])
+{
+	printf("%d cpu(s) online\n", qfw_online_cpus(qfw_dev));
+	return 0;
+}
+
+static int qemu_fwcfg_do_load(struct cmd_tbl *cmdtp, int flag,
+			      int argc, char *const argv[])
+{
+	char *env;
+	ulong load_addr;
+	ulong initrd_addr;
+
+	env = env_get("loadaddr");
+	load_addr = env ?
+		hextoul(env, NULL) :
+		CONFIG_SYS_LOAD_ADDR;
+
+	env = env_get("ramdiskaddr");
+	initrd_addr = env ?
+		hextoul(env, NULL) :
+#ifdef CFG_RAMDISK_ADDR
+		CFG_RAMDISK_ADDR;
+#else
+		0;
+#endif
+
+	if (argc == 2) {
+		load_addr = hextoul(argv[0], NULL);
+		initrd_addr = hextoul(argv[1], NULL);
+	} else if (argc == 1) {
+		load_addr = hextoul(argv[0], NULL);
+	}
+
+	if (!load_addr || !initrd_addr) {
+		printf("missing load or initrd address\n");
+		return CMD_RET_FAILURE;
+	}
+
+	return qemu_fwcfg_setup_kernel(qfw_dev, load_addr, initrd_addr);
+}
+
+static struct cmd_tbl fwcfg_commands[] = {
+	U_BOOT_CMD_MKENT(list, 0, 1, qemu_fwcfg_do_list, "", ""),
+	U_BOOT_CMD_MKENT(cpus, 0, 1, qemu_fwcfg_do_cpus, "", ""),
+	U_BOOT_CMD_MKENT(load, 2, 1, qemu_fwcfg_do_load, "", ""),
+};
+
+static int do_qemu_fw(struct cmd_tbl *cmdtp, int flag, int argc,
+		      char *const argv[])
+{
+	int ret;
+	struct cmd_tbl *fwcfg_cmd;
+
+	ret = qfw_get_dev(&qfw_dev);
+	if (ret) {
+		printf("QEMU fw_cfg interface not found\n");
+		return CMD_RET_USAGE;
+	}
+
+	fwcfg_cmd = find_cmd_tbl(argv[1], fwcfg_commands,
+				 ARRAY_SIZE(fwcfg_commands));
+	argc -= 2;
+	argv += 2;
+	if (!fwcfg_cmd || argc > fwcfg_cmd->maxargs)
+		return CMD_RET_USAGE;
+
+	ret = fwcfg_cmd->cmd(fwcfg_cmd, flag, argc, argv);
+
+	return cmd_process_error(fwcfg_cmd, ret);
+}
+
+U_BOOT_CMD(
+	qfw,	4,	1,	do_qemu_fw,
+	"QEMU firmware interface",
+	"<command>\n"
+	"    - list                             : print firmware(s) currently loaded\n"
+	"    - cpus                             : print online cpu number\n"
+	"    - load <kernel addr> <initrd addr> : load kernel and initrd (if any), and setup for zboot\n"
+);