1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+
2fcf5c041SMiao Yan /*
3fcf5c041SMiao Yan * (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com>
4fcf5c041SMiao Yan */
5fcf5c041SMiao Yan
6fcf5c041SMiao Yan #include <common.h>
7fcf5c041SMiao Yan #include <command.h>
8fcf5c041SMiao Yan #include <errno.h>
918686590SMiao Yan #include <qfw.h>
10fcf5c041SMiao Yan
11fcf5c041SMiao Yan /*
12fcf5c041SMiao Yan * This function prepares kernel for zboot. It loads kernel data
13fcf5c041SMiao Yan * to 'load_addr', initrd to 'initrd_addr' and kernel command
14fcf5c041SMiao Yan * line using qemu fw_cfg interface.
15fcf5c041SMiao Yan */
qemu_fwcfg_setup_kernel(void * load_addr,void * initrd_addr)16fcf5c041SMiao Yan static int qemu_fwcfg_setup_kernel(void *load_addr, void *initrd_addr)
17fcf5c041SMiao Yan {
18fcf5c041SMiao Yan char *data_addr;
19fcf5c041SMiao Yan uint32_t setup_size, kernel_size, cmdline_size, initrd_size;
20fcf5c041SMiao Yan
21fcf5c041SMiao Yan qemu_fwcfg_read_entry(FW_CFG_SETUP_SIZE, 4, &setup_size);
22fcf5c041SMiao Yan qemu_fwcfg_read_entry(FW_CFG_KERNEL_SIZE, 4, &kernel_size);
23fcf5c041SMiao Yan
24fcf5c041SMiao Yan if (setup_size == 0 || kernel_size == 0) {
25fcf5c041SMiao Yan printf("warning: no kernel available\n");
26fcf5c041SMiao Yan return -1;
27fcf5c041SMiao Yan }
28fcf5c041SMiao Yan
29fcf5c041SMiao Yan data_addr = load_addr;
30fcf5c041SMiao Yan qemu_fwcfg_read_entry(FW_CFG_SETUP_DATA,
31fcf5c041SMiao Yan le32_to_cpu(setup_size), data_addr);
32fcf5c041SMiao Yan data_addr += le32_to_cpu(setup_size);
33fcf5c041SMiao Yan
34fcf5c041SMiao Yan qemu_fwcfg_read_entry(FW_CFG_KERNEL_DATA,
35fcf5c041SMiao Yan le32_to_cpu(kernel_size), data_addr);
36fcf5c041SMiao Yan data_addr += le32_to_cpu(kernel_size);
37fcf5c041SMiao Yan
38fcf5c041SMiao Yan data_addr = initrd_addr;
39fcf5c041SMiao Yan qemu_fwcfg_read_entry(FW_CFG_INITRD_SIZE, 4, &initrd_size);
40fcf5c041SMiao Yan if (initrd_size == 0) {
41fcf5c041SMiao Yan printf("warning: no initrd available\n");
42fcf5c041SMiao Yan } else {
43fcf5c041SMiao Yan qemu_fwcfg_read_entry(FW_CFG_INITRD_DATA,
44fcf5c041SMiao Yan le32_to_cpu(initrd_size), data_addr);
45fcf5c041SMiao Yan data_addr += le32_to_cpu(initrd_size);
46fcf5c041SMiao Yan }
47fcf5c041SMiao Yan
48fcf5c041SMiao Yan qemu_fwcfg_read_entry(FW_CFG_CMDLINE_SIZE, 4, &cmdline_size);
49fcf5c041SMiao Yan if (cmdline_size) {
50fcf5c041SMiao Yan qemu_fwcfg_read_entry(FW_CFG_CMDLINE_DATA,
51fcf5c041SMiao Yan le32_to_cpu(cmdline_size), data_addr);
52fcf5c041SMiao Yan /*
53fcf5c041SMiao Yan * if kernel cmdline only contains '\0', (e.g. no -append
54fcf5c041SMiao Yan * when invoking qemu), do not update bootargs
55fcf5c041SMiao Yan */
56fcf5c041SMiao Yan if (*data_addr != '\0') {
57382bee57SSimon Glass if (env_set("bootargs", data_addr) < 0)
58fcf5c041SMiao Yan printf("warning: unable to change bootargs\n");
59fcf5c041SMiao Yan }
60fcf5c041SMiao Yan }
61fcf5c041SMiao Yan
62fcf5c041SMiao Yan printf("loading kernel to address %p size %x", load_addr,
63fcf5c041SMiao Yan le32_to_cpu(kernel_size));
64fcf5c041SMiao Yan if (initrd_size)
65fcf5c041SMiao Yan printf(" initrd %p size %x\n",
66fcf5c041SMiao Yan initrd_addr,
67fcf5c041SMiao Yan le32_to_cpu(initrd_size));
68fcf5c041SMiao Yan else
69fcf5c041SMiao Yan printf("\n");
70fcf5c041SMiao Yan
71fcf5c041SMiao Yan return 0;
72fcf5c041SMiao Yan }
73fcf5c041SMiao Yan
qemu_fwcfg_list_firmware(void)74fcf5c041SMiao Yan static int qemu_fwcfg_list_firmware(void)
75fcf5c041SMiao Yan {
76fcf5c041SMiao Yan int ret;
77fcf5c041SMiao Yan struct fw_cfg_file_iter iter;
78fcf5c041SMiao Yan struct fw_file *file;
79fcf5c041SMiao Yan
80fcf5c041SMiao Yan /* make sure fw_list is loaded */
81fcf5c041SMiao Yan ret = qemu_fwcfg_read_firmware_list();
82fcf5c041SMiao Yan if (ret)
83fcf5c041SMiao Yan return ret;
84fcf5c041SMiao Yan
85fcf5c041SMiao Yan
86fcf5c041SMiao Yan for (file = qemu_fwcfg_file_iter_init(&iter);
87fcf5c041SMiao Yan !qemu_fwcfg_file_iter_end(&iter);
88fcf5c041SMiao Yan file = qemu_fwcfg_file_iter_next(&iter)) {
89fcf5c041SMiao Yan printf("%-56s\n", file->cfg.name);
90fcf5c041SMiao Yan }
91fcf5c041SMiao Yan
92fcf5c041SMiao Yan return 0;
93fcf5c041SMiao Yan }
94fcf5c041SMiao Yan
qemu_fwcfg_do_list(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])95fcf5c041SMiao Yan static int qemu_fwcfg_do_list(cmd_tbl_t *cmdtp, int flag,
96fcf5c041SMiao Yan int argc, char * const argv[])
97fcf5c041SMiao Yan {
98fcf5c041SMiao Yan if (qemu_fwcfg_list_firmware() < 0)
99fcf5c041SMiao Yan return CMD_RET_FAILURE;
100fcf5c041SMiao Yan
101fcf5c041SMiao Yan return 0;
102fcf5c041SMiao Yan }
103fcf5c041SMiao Yan
qemu_fwcfg_do_cpus(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])104fcf5c041SMiao Yan static int qemu_fwcfg_do_cpus(cmd_tbl_t *cmdtp, int flag,
105fcf5c041SMiao Yan int argc, char * const argv[])
106fcf5c041SMiao Yan {
107fcf5c041SMiao Yan int ret = qemu_fwcfg_online_cpus();
108fcf5c041SMiao Yan if (ret < 0) {
109fcf5c041SMiao Yan printf("QEMU fw_cfg interface not found\n");
110fcf5c041SMiao Yan return CMD_RET_FAILURE;
111fcf5c041SMiao Yan }
112fcf5c041SMiao Yan
113fcf5c041SMiao Yan printf("%d cpu(s) online\n", qemu_fwcfg_online_cpus());
114fcf5c041SMiao Yan
115fcf5c041SMiao Yan return 0;
116fcf5c041SMiao Yan }
117fcf5c041SMiao Yan
qemu_fwcfg_do_load(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])118fcf5c041SMiao Yan static int qemu_fwcfg_do_load(cmd_tbl_t *cmdtp, int flag,
119fcf5c041SMiao Yan int argc, char * const argv[])
120fcf5c041SMiao Yan {
121fcf5c041SMiao Yan char *env;
122fcf5c041SMiao Yan void *load_addr;
123fcf5c041SMiao Yan void *initrd_addr;
124fcf5c041SMiao Yan
12500caae6dSSimon Glass env = env_get("loadaddr");
126fcf5c041SMiao Yan load_addr = env ?
127fcf5c041SMiao Yan (void *)simple_strtoul(env, NULL, 16) :
12886e30e67SMiao Yan #ifdef CONFIG_LOADADDR
129fcf5c041SMiao Yan (void *)CONFIG_LOADADDR;
13086e30e67SMiao Yan #else
13186e30e67SMiao Yan NULL;
13286e30e67SMiao Yan #endif
133fcf5c041SMiao Yan
13400caae6dSSimon Glass env = env_get("ramdiskaddr");
135fcf5c041SMiao Yan initrd_addr = env ?
136fcf5c041SMiao Yan (void *)simple_strtoul(env, NULL, 16) :
13786e30e67SMiao Yan #ifdef CONFIG_RAMDISK_ADDR
138fcf5c041SMiao Yan (void *)CONFIG_RAMDISK_ADDR;
13986e30e67SMiao Yan #else
14086e30e67SMiao Yan NULL;
14186e30e67SMiao Yan #endif
142fcf5c041SMiao Yan
143fcf5c041SMiao Yan if (argc == 2) {
144fcf5c041SMiao Yan load_addr = (void *)simple_strtoul(argv[0], NULL, 16);
145fcf5c041SMiao Yan initrd_addr = (void *)simple_strtoul(argv[1], NULL, 16);
146fcf5c041SMiao Yan } else if (argc == 1) {
147fcf5c041SMiao Yan load_addr = (void *)simple_strtoul(argv[0], NULL, 16);
148fcf5c041SMiao Yan }
149fcf5c041SMiao Yan
15086e30e67SMiao Yan if (!load_addr || !initrd_addr) {
15186e30e67SMiao Yan printf("missing load or initrd address\n");
15286e30e67SMiao Yan return CMD_RET_FAILURE;
15386e30e67SMiao Yan }
15486e30e67SMiao Yan
155fcf5c041SMiao Yan return qemu_fwcfg_setup_kernel(load_addr, initrd_addr);
156fcf5c041SMiao Yan }
157fcf5c041SMiao Yan
158fcf5c041SMiao Yan static cmd_tbl_t fwcfg_commands[] = {
159fcf5c041SMiao Yan U_BOOT_CMD_MKENT(list, 0, 1, qemu_fwcfg_do_list, "", ""),
160fcf5c041SMiao Yan U_BOOT_CMD_MKENT(cpus, 0, 1, qemu_fwcfg_do_cpus, "", ""),
161fcf5c041SMiao Yan U_BOOT_CMD_MKENT(load, 2, 1, qemu_fwcfg_do_load, "", ""),
162fcf5c041SMiao Yan };
163fcf5c041SMiao Yan
do_qemu_fw(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])164fcf5c041SMiao Yan static int do_qemu_fw(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
165fcf5c041SMiao Yan {
166fcf5c041SMiao Yan int ret;
167fcf5c041SMiao Yan cmd_tbl_t *fwcfg_cmd;
168fcf5c041SMiao Yan
169fcf5c041SMiao Yan if (!qemu_fwcfg_present()) {
170fcf5c041SMiao Yan printf("QEMU fw_cfg interface not found\n");
171fcf5c041SMiao Yan return CMD_RET_USAGE;
172fcf5c041SMiao Yan }
173fcf5c041SMiao Yan
174fcf5c041SMiao Yan fwcfg_cmd = find_cmd_tbl(argv[1], fwcfg_commands,
175fcf5c041SMiao Yan ARRAY_SIZE(fwcfg_commands));
176fcf5c041SMiao Yan argc -= 2;
177fcf5c041SMiao Yan argv += 2;
178fcf5c041SMiao Yan if (!fwcfg_cmd || argc > fwcfg_cmd->maxargs)
179fcf5c041SMiao Yan return CMD_RET_USAGE;
180fcf5c041SMiao Yan
181fcf5c041SMiao Yan ret = fwcfg_cmd->cmd(fwcfg_cmd, flag, argc, argv);
182fcf5c041SMiao Yan
183fcf5c041SMiao Yan return cmd_process_error(fwcfg_cmd, ret);
184fcf5c041SMiao Yan }
185fcf5c041SMiao Yan
186fcf5c041SMiao Yan U_BOOT_CMD(
187fcf5c041SMiao Yan qfw, 4, 1, do_qemu_fw,
188fcf5c041SMiao Yan "QEMU firmware interface",
189fcf5c041SMiao Yan "<command>\n"
190fcf5c041SMiao Yan " - list : print firmware(s) currently loaded\n"
191fcf5c041SMiao Yan " - cpus : print online cpu number\n"
192fcf5c041SMiao Yan " - load <kernel addr> <initrd addr> : load kernel and initrd (if any), and setup for zboot\n"
193fcf5c041SMiao Yan )
194