xref: /openbmc/qemu/include/hw/nvram/fw_cfg.h (revision 2993683b)
1 #ifndef FW_CFG_H
2 #define FW_CFG_H
3 
4 #ifndef NO_QEMU_PROTOS
5 #include <stdint.h>
6 #include <stddef.h>
7 
8 #include "exec/hwaddr.h"
9 #endif
10 
11 #define FW_CFG_SIGNATURE        0x00
12 #define FW_CFG_ID               0x01
13 #define FW_CFG_UUID             0x02
14 #define FW_CFG_RAM_SIZE         0x03
15 #define FW_CFG_NOGRAPHIC        0x04
16 #define FW_CFG_NB_CPUS          0x05
17 #define FW_CFG_MACHINE_ID       0x06
18 #define FW_CFG_KERNEL_ADDR      0x07
19 #define FW_CFG_KERNEL_SIZE      0x08
20 #define FW_CFG_KERNEL_CMDLINE   0x09
21 #define FW_CFG_INITRD_ADDR      0x0a
22 #define FW_CFG_INITRD_SIZE      0x0b
23 #define FW_CFG_BOOT_DEVICE      0x0c
24 #define FW_CFG_NUMA             0x0d
25 #define FW_CFG_BOOT_MENU        0x0e
26 #define FW_CFG_MAX_CPUS         0x0f
27 #define FW_CFG_KERNEL_ENTRY     0x10
28 #define FW_CFG_KERNEL_DATA      0x11
29 #define FW_CFG_INITRD_DATA      0x12
30 #define FW_CFG_CMDLINE_ADDR     0x13
31 #define FW_CFG_CMDLINE_SIZE     0x14
32 #define FW_CFG_CMDLINE_DATA     0x15
33 #define FW_CFG_SETUP_ADDR       0x16
34 #define FW_CFG_SETUP_SIZE       0x17
35 #define FW_CFG_SETUP_DATA       0x18
36 #define FW_CFG_FILE_DIR         0x19
37 
38 #define FW_CFG_FILE_FIRST       0x20
39 #define FW_CFG_FILE_SLOTS       0x10
40 #define FW_CFG_MAX_ENTRY        (FW_CFG_FILE_FIRST+FW_CFG_FILE_SLOTS)
41 
42 #define FW_CFG_WRITE_CHANNEL    0x4000
43 #define FW_CFG_ARCH_LOCAL       0x8000
44 #define FW_CFG_ENTRY_MASK       ~(FW_CFG_WRITE_CHANNEL | FW_CFG_ARCH_LOCAL)
45 
46 #define FW_CFG_INVALID          0xffff
47 
48 #ifndef NO_QEMU_PROTOS
49 typedef struct FWCfgFile {
50     uint32_t  size;        /* file size */
51     uint16_t  select;      /* write this to 0x510 to read it */
52     uint16_t  reserved;
53     char      name[56];
54 } FWCfgFile;
55 
56 typedef struct FWCfgFiles {
57     uint32_t  count;
58     FWCfgFile f[];
59 } FWCfgFiles;
60 
61 typedef void (*FWCfgCallback)(void *opaque, uint8_t *data);
62 
63 typedef struct FWCfgState FWCfgState;
64 void fw_cfg_add_bytes(FWCfgState *s, uint16_t key, void *data, size_t len);
65 void fw_cfg_add_string(FWCfgState *s, uint16_t key, const char *value);
66 void fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value);
67 void fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value);
68 void fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value);
69 void fw_cfg_add_callback(FWCfgState *s, uint16_t key, FWCfgCallback callback,
70                          void *callback_opaque, void *data, size_t len);
71 void fw_cfg_add_file(FWCfgState *s, const char *filename, void *data,
72                      size_t len);
73 FWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
74                         hwaddr crl_addr, hwaddr data_addr);
75 
76 #endif /* NO_QEMU_PROTOS */
77 
78 #endif
79