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/*
* (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __FW_CFG__
#define __FW_CFG__
#define FW_CONTROL_PORT 0x510
#define FW_DATA_PORT 0x511
#define FW_DMA_PORT_LOW 0x514
#define FW_DMA_PORT_HIGH 0x518
#include <linux/list.h>
enum qemu_fwcfg_items {
FW_CFG_SIGNATURE = 0x00,
FW_CFG_ID = 0x01,
FW_CFG_UUID = 0x02,
FW_CFG_RAM_SIZE = 0x03,
FW_CFG_NOGRAPHIC = 0x04,
FW_CFG_NB_CPUS = 0x05,
FW_CFG_MACHINE_ID = 0x06,
FW_CFG_KERNEL_ADDR = 0x07,
FW_CFG_KERNEL_SIZE = 0x08,
FW_CFG_KERNEL_CMDLINE = 0x09,
FW_CFG_INITRD_ADDR = 0x0a,
FW_CFG_INITRD_SIZE = 0x0b,
FW_CFG_BOOT_DEVICE = 0x0c,
FW_CFG_NUMA = 0x0d,
FW_CFG_BOOT_MENU = 0x0e,
FW_CFG_MAX_CPUS = 0x0f,
FW_CFG_KERNEL_ENTRY = 0x10,
FW_CFG_KERNEL_DATA = 0x11,
FW_CFG_INITRD_DATA = 0x12,
FW_CFG_CMDLINE_ADDR = 0x13,
FW_CFG_CMDLINE_SIZE = 0x14,
FW_CFG_CMDLINE_DATA = 0x15,
FW_CFG_SETUP_ADDR = 0x16,
FW_CFG_SETUP_SIZE = 0x17,
FW_CFG_SETUP_DATA = 0x18,
FW_CFG_FILE_DIR = 0x19,
FW_CFG_FILE_FIRST = 0x20,
FW_CFG_WRITE_CHANNEL = 0x4000,
FW_CFG_ARCH_LOCAL = 0x8000,
FW_CFG_INVALID = 0xffff,
};
#define FW_CFG_FILE_SLOTS 0x10
#define FW_CFG_MAX_ENTRY (FW_CFG_FILE_FIRST + FW_CFG_FILE_SLOTS)
#define FW_CFG_ENTRY_MASK ~(FW_CFG_WRITE_CHANNEL | FW_CFG_ARCH_LOCAL)
#define FW_CFG_MAX_FILE_PATH 56
#define QEMU_FW_CFG_SIGNATURE (('Q' << 24) | ('E' << 16) | ('M' << 8) | 'U')
#define FW_CFG_DMA_ERROR (1 << 0)
#define FW_CFG_DMA_READ (1 << 1)
#define FW_CFG_DMA_SKIP (1 << 2)
#define FW_CFG_DMA_SELECT (1 << 3)
#define FW_CFG_DMA_ENABLED (1 << 1)
struct fw_cfg_file {
__be32 size;
__be16 select;
__be16 reserved;
char name[FW_CFG_MAX_FILE_PATH];
};
struct fw_file {
struct fw_cfg_file cfg; /* firmware file information */
unsigned long addr; /* firmware file in-memory address */
struct list_head list; /* list node to link to fw_list */
};
struct fw_cfg_dma_access {
__be32 control;
__be32 length;
__be64 address;
};
/**
* Initialize QEMU fw_cfg interface
*/
void qemu_fwcfg_init(void);
/**
* Get system cpu number
*
* @return: cpu number in system
*/
int qemu_fwcfg_online_cpus(void);
#endif
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