mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-17 07:28:51 +09:00
![Simon Glass](/assets/img/avatar_default.png)
We should not use typedefs in U-Boot. They cannot be used as forward declarations which means that header files must include the full header to access them. Drop the typedef and rename the struct to remove the _s suffix which is now not useful. This requires quite a few header-file additions. Signed-off-by: Simon Glass <sjg@chromium.org>
196 lines
4.7 KiB
C
196 lines
4.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <env.h>
|
|
#include <errno.h>
|
|
#include <qfw.h>
|
|
|
|
/*
|
|
* This function prepares kernel for zboot. It loads kernel data
|
|
* to 'load_addr', initrd to 'initrd_addr' and kernel command
|
|
* line using qemu fw_cfg interface.
|
|
*/
|
|
static int qemu_fwcfg_setup_kernel(void *load_addr, void *initrd_addr)
|
|
{
|
|
char *data_addr;
|
|
uint32_t setup_size, kernel_size, cmdline_size, initrd_size;
|
|
|
|
qemu_fwcfg_read_entry(FW_CFG_SETUP_SIZE, 4, &setup_size);
|
|
qemu_fwcfg_read_entry(FW_CFG_KERNEL_SIZE, 4, &kernel_size);
|
|
|
|
if (setup_size == 0 || kernel_size == 0) {
|
|
printf("warning: no kernel available\n");
|
|
return -1;
|
|
}
|
|
|
|
data_addr = load_addr;
|
|
qemu_fwcfg_read_entry(FW_CFG_SETUP_DATA,
|
|
le32_to_cpu(setup_size), data_addr);
|
|
data_addr += le32_to_cpu(setup_size);
|
|
|
|
qemu_fwcfg_read_entry(FW_CFG_KERNEL_DATA,
|
|
le32_to_cpu(kernel_size), data_addr);
|
|
data_addr += le32_to_cpu(kernel_size);
|
|
|
|
data_addr = initrd_addr;
|
|
qemu_fwcfg_read_entry(FW_CFG_INITRD_SIZE, 4, &initrd_size);
|
|
if (initrd_size == 0) {
|
|
printf("warning: no initrd available\n");
|
|
} else {
|
|
qemu_fwcfg_read_entry(FW_CFG_INITRD_DATA,
|
|
le32_to_cpu(initrd_size), data_addr);
|
|
data_addr += le32_to_cpu(initrd_size);
|
|
}
|
|
|
|
qemu_fwcfg_read_entry(FW_CFG_CMDLINE_SIZE, 4, &cmdline_size);
|
|
if (cmdline_size) {
|
|
qemu_fwcfg_read_entry(FW_CFG_CMDLINE_DATA,
|
|
le32_to_cpu(cmdline_size), data_addr);
|
|
/*
|
|
* if kernel cmdline only contains '\0', (e.g. no -append
|
|
* when invoking qemu), do not update bootargs
|
|
*/
|
|
if (*data_addr != '\0') {
|
|
if (env_set("bootargs", data_addr) < 0)
|
|
printf("warning: unable to change bootargs\n");
|
|
}
|
|
}
|
|
|
|
printf("loading kernel to address %p size %x", load_addr,
|
|
le32_to_cpu(kernel_size));
|
|
if (initrd_size)
|
|
printf(" initrd %p size %x\n",
|
|
initrd_addr,
|
|
le32_to_cpu(initrd_size));
|
|
else
|
|
printf("\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qemu_fwcfg_list_firmware(void)
|
|
{
|
|
int ret;
|
|
struct fw_cfg_file_iter iter;
|
|
struct fw_file *file;
|
|
|
|
/* make sure fw_list is loaded */
|
|
ret = qemu_fwcfg_read_firmware_list();
|
|
if (ret)
|
|
return ret;
|
|
|
|
|
|
for (file = qemu_fwcfg_file_iter_init(&iter);
|
|
!qemu_fwcfg_file_iter_end(&iter);
|
|
file = qemu_fwcfg_file_iter_next(&iter)) {
|
|
printf("%-56s\n", 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_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[])
|
|
{
|
|
int ret = qemu_fwcfg_online_cpus();
|
|
if (ret < 0) {
|
|
printf("QEMU fw_cfg interface not found\n");
|
|
return CMD_RET_FAILURE;
|
|
}
|
|
|
|
printf("%d cpu(s) online\n", qemu_fwcfg_online_cpus());
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qemu_fwcfg_do_load(struct cmd_tbl *cmdtp, int flag,
|
|
int argc, char *const argv[])
|
|
{
|
|
char *env;
|
|
void *load_addr;
|
|
void *initrd_addr;
|
|
|
|
env = env_get("loadaddr");
|
|
load_addr = env ?
|
|
(void *)simple_strtoul(env, NULL, 16) :
|
|
#ifdef CONFIG_LOADADDR
|
|
(void *)CONFIG_LOADADDR;
|
|
#else
|
|
NULL;
|
|
#endif
|
|
|
|
env = env_get("ramdiskaddr");
|
|
initrd_addr = env ?
|
|
(void *)simple_strtoul(env, NULL, 16) :
|
|
#ifdef CONFIG_RAMDISK_ADDR
|
|
(void *)CONFIG_RAMDISK_ADDR;
|
|
#else
|
|
NULL;
|
|
#endif
|
|
|
|
if (argc == 2) {
|
|
load_addr = (void *)simple_strtoul(argv[0], NULL, 16);
|
|
initrd_addr = (void *)simple_strtoul(argv[1], NULL, 16);
|
|
} else if (argc == 1) {
|
|
load_addr = (void *)simple_strtoul(argv[0], NULL, 16);
|
|
}
|
|
|
|
if (!load_addr || !initrd_addr) {
|
|
printf("missing load or initrd address\n");
|
|
return CMD_RET_FAILURE;
|
|
}
|
|
|
|
return qemu_fwcfg_setup_kernel(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;
|
|
|
|
if (!qemu_fwcfg_present()) {
|
|
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"
|
|
)
|