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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2021
* Köry Maincent, Bootlin, <[email protected]>
*/
#include <alist.h>
#include <exports.h>
#include <command.h>
#include <env.h>
#include <extension_board.h>
static int
cmd_extension_load_overlay_from_env(const struct extension *extension,
ulong *filesize)
{
ulong size, overlay_addr;
char *overlay_cmd;
int ret;
overlay_cmd = env_get("extension_overlay_cmd");
if (!overlay_cmd) {
printf("Environment extension_overlay_cmd is missing\n");
return -EINVAL;
}
overlay_addr = env_get_hex("extension_overlay_addr", 0);
if (!overlay_addr) {
printf("Environment extension_overlay_addr is missing\n");
return -EINVAL;
}
env_set("extension_overlay_name", extension->overlay);
ret = run_command(overlay_cmd, 0);
if (ret)
return ret;
size = env_get_hex("filesize", 0);
if (!size)
return -EINVAL;
*filesize = size;
return 0;
}
static int cmd_extension_apply(int extension_num)
{
struct alist *extension_list = extension_get_list();
const struct extension *extension;
ulong size;
int ret;
if (!extension_list)
return -ENODEV;
extension = alist_get(extension_list, extension_num,
struct extension);
if (!extension) {
printf("Wrong extension number\n");
return -ENODEV;
}
ret = cmd_extension_load_overlay_from_env(extension, &size);
if (ret)
return ret;
return extension_apply(working_fdt, size);
}
static int cmd_extension_apply_all(void)
{
struct alist *extension_list = extension_get_list();
const struct extension *extension;
int ret;
if (!extension_list)
return -ENODEV;
alist_for_each(extension, extension_list) {
ulong size;
ret = cmd_extension_load_overlay_from_env(extension, &size);
if (ret)
return ret;
ret = extension_apply(working_fdt, size);
if (ret)
return ret;
}
return 0;
}
static int do_extension_list(struct cmd_tbl *cmdtp, int flag,
int argc, char *const argv[])
{
struct alist *extension_list;
struct extension *extension;
int i = 0;
extension_list = extension_get_list();
if (!extension_list) {
printf("No extension device\n");
return CMD_RET_FAILURE;
}
if (!alist_get_ptr(extension_list, 0)) {
printf("No extension registered - Please run \"extension scan\"\n");
return CMD_RET_SUCCESS;
}
alist_for_each(extension, extension_list) {
printf("Extension %d: %s\n", i++, extension->name);
printf("\tManufacturer: \t\t%s\n", extension->owner);
printf("\tVersion: \t\t%s\n", extension->version);
printf("\tDevicetree overlay: \t%s\n", extension->overlay);
printf("\tOther information: \t%s\n", extension->other);
}
return CMD_RET_SUCCESS;
}
static int do_extension_scan(struct cmd_tbl *cmdtp, int flag,
int argc, char *const argv[])
{
int extension_num;
extension_num = extension_scan();
if (extension_num == -ENODEV)
extension_num = 0;
else if (extension_num < 0)
return CMD_RET_FAILURE;
printf("Found %d extension board(s).\n", extension_num);
return CMD_RET_SUCCESS;
}
static int do_extension_apply(struct cmd_tbl *cmdtp, int flag,
int argc, char *const argv[])
{
int extension_id;
if (argc < 2)
return CMD_RET_USAGE;
if (!working_fdt) {
printf("No FDT memory address configured. Please configure\n"
"the FDT address via \"fdt addr <address>\" command.\n");
return -EINVAL;
}
if (strcmp(argv[1], "all") == 0) {
if (cmd_extension_apply_all())
return CMD_RET_FAILURE;
} else {
extension_id = simple_strtol(argv[1], NULL, 10);
if (cmd_extension_apply(extension_id))
return CMD_RET_FAILURE;
}
return CMD_RET_SUCCESS;
}
static struct cmd_tbl cmd_extension[] = {
U_BOOT_CMD_MKENT(scan, 1, 1, do_extension_scan, "", ""),
U_BOOT_CMD_MKENT(list, 1, 0, do_extension_list, "", ""),
U_BOOT_CMD_MKENT(apply, 2, 0, do_extension_apply, "", ""),
};
static int do_extensionops(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct cmd_tbl *cp;
/* Drop the extension command */
argc--;
argv++;
cp = find_cmd_tbl(argv[0], cmd_extension, ARRAY_SIZE(cmd_extension));
if (cp)
return cp->cmd(cmdtp, flag, argc, argv);
return CMD_RET_USAGE;
}
U_BOOT_CMD(extension, 3, 1, do_extensionops,
"Extension board management sub system",
"scan - scan plugged extension(s) board(s)\n"
"extension list - lists available extension(s) board(s)\n"
"extension apply <extension number|all> - applies DT overlays corresponding to extension boards\n"
);
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