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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com>
* (C) Copyright 2021 Asherah Connor <ashe@kivikakk.ee>
*/
#include <dm.h>
#include <env.h>
#include <mapmem.h>
#include <qfw.h>
#include <stdlib.h>
#include <dm/uclass.h>
int qfw_get_dev(struct udevice **devp)
{
return uclass_first_device_err(UCLASS_QFW, devp);
}
int qfw_online_cpus(struct udevice *dev)
{
u16 nb_cpus;
qfw_read_entry(dev, FW_CFG_NB_CPUS, 2, &nb_cpus);
return le16_to_cpu(nb_cpus);
}
int qfw_read_firmware_list(struct udevice *dev)
{
int i;
u32 count;
struct fw_file *file;
struct list_head *entry;
struct qfw_dev *qdev = dev_get_uclass_priv(dev);
/* don't read it twice */
if (!list_empty(&qdev->fw_list))
return 0;
qfw_read_entry(dev, FW_CFG_FILE_DIR, 4, &count);
if (!count)
return 0;
count = be32_to_cpu(count);
for (i = 0; i < count; i++) {
file = malloc(sizeof(*file));
if (!file) {
printf("error: allocating resource\n");
goto err;
}
qfw_read_entry(dev, FW_CFG_INVALID,
sizeof(struct fw_cfg_file), &file->cfg);
file->addr = 0;
list_add_tail(&file->list, &qdev->fw_list);
}
return 0;
err:
list_for_each(entry, &qdev->fw_list) {
file = list_entry(entry, struct fw_file, list);
free(file);
}
return -ENOMEM;
}
struct fw_file *qfw_find_file(struct udevice *dev, const char *name)
{
struct list_head *entry;
struct fw_file *file;
struct qfw_dev *qdev = dev_get_uclass_priv(dev);
list_for_each(entry, &qdev->fw_list) {
file = list_entry(entry, struct fw_file, list);
if (!strcmp(file->cfg.name, name))
return file;
}
return NULL;
}
struct fw_file *qfw_file_iter_init(struct udevice *dev,
struct fw_cfg_file_iter *iter)
{
struct qfw_dev *qdev = dev_get_uclass_priv(dev);
iter->entry = qdev->fw_list.next;
iter->end = &qdev->fw_list;
return list_entry((struct list_head *)iter->entry,
struct fw_file, list);
}
struct fw_file *qfw_file_iter_next(struct fw_cfg_file_iter *iter)
{
iter->entry = ((struct list_head *)iter->entry)->next;
return list_entry((struct list_head *)iter->entry,
struct fw_file, list);
}
bool qfw_file_iter_end(struct fw_cfg_file_iter *iter)
{
return iter->entry == iter->end;
}
int qemu_fwcfg_setup_kernel(struct udevice *qfw_dev, ulong load_addr,
ulong initrd_addr)
{
char *data_addr;
u32 setup_size, kernel_size, cmdline_size, initrd_size;
qfw_read_entry(qfw_dev, FW_CFG_SETUP_SIZE, 4, &setup_size);
qfw_read_entry(qfw_dev, FW_CFG_KERNEL_SIZE, 4, &kernel_size);
if (!kernel_size) {
printf("fatal: no kernel available\n");
return -ENOENT;
}
data_addr = map_sysmem(load_addr, 0);
if (setup_size) {
qfw_read_entry(qfw_dev, FW_CFG_SETUP_DATA,
le32_to_cpu(setup_size), data_addr);
data_addr += le32_to_cpu(setup_size);
}
qfw_read_entry(qfw_dev, FW_CFG_KERNEL_DATA,
le32_to_cpu(kernel_size), data_addr);
data_addr += le32_to_cpu(kernel_size);
env_set_hex("filesize", le32_to_cpu(kernel_size));
data_addr = map_sysmem(initrd_addr, 0);
qfw_read_entry(qfw_dev, FW_CFG_INITRD_SIZE, 4, &initrd_size);
if (!initrd_size) {
printf("warning: no initrd available\n");
} else {
qfw_read_entry(qfw_dev, FW_CFG_INITRD_DATA,
le32_to_cpu(initrd_size), data_addr);
data_addr += le32_to_cpu(initrd_size);
env_set_hex("filesize", le32_to_cpu(initrd_size));
}
qfw_read_entry(qfw_dev, FW_CFG_CMDLINE_SIZE, 4, &cmdline_size);
if (cmdline_size) {
qfw_read_entry(qfw_dev, 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) {
if (env_set("bootargs", data_addr) < 0)
printf("warning: unable to change bootargs\n");
}
}
printf("loading kernel to address %lx size %x", load_addr,
le32_to_cpu(kernel_size));
if (initrd_size)
printf(" initrd %lx size %x\n", initrd_addr,
le32_to_cpu(initrd_size));
else
printf("\n");
return 0;
}
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