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https://github.com/xemu-project/xemu.git
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abe147e0ce
This patch adds a file transfer interface to fw_cfg. Intended to be
used for passing non-pci option roms and vgabios to seabios. Namespace
is modeled after the existing cbfs filesystem support in seabios.
Reading the new FW_CFG_FILE_DIR entry returns a file list.
Fields there are in network byte order (aka bigendian).
aliguori: fix fw_cfg.h for multiboot.bin, add proper fw_cfg.h declarations,
quiet fprintf() in fw_cfg.c
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
#ifndef FW_CFG_H
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#define FW_CFG_H
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#define FW_CFG_SIGNATURE 0x00
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#define FW_CFG_ID 0x01
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#define FW_CFG_UUID 0x02
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#define FW_CFG_RAM_SIZE 0x03
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#define FW_CFG_NOGRAPHIC 0x04
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#define FW_CFG_NB_CPUS 0x05
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#define FW_CFG_MACHINE_ID 0x06
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#define FW_CFG_KERNEL_ADDR 0x07
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#define FW_CFG_KERNEL_SIZE 0x08
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#define FW_CFG_KERNEL_CMDLINE 0x09
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#define FW_CFG_INITRD_ADDR 0x0a
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#define FW_CFG_INITRD_SIZE 0x0b
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#define FW_CFG_BOOT_DEVICE 0x0c
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#define FW_CFG_NUMA 0x0d
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#define FW_CFG_BOOT_MENU 0x0e
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#define FW_CFG_MAX_CPUS 0x0f
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#define FW_CFG_KERNEL_ENTRY 0x10
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#define FW_CFG_KERNEL_DATA 0x11
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#define FW_CFG_INITRD_DATA 0x12
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#define FW_CFG_CMDLINE_ADDR 0x13
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#define FW_CFG_CMDLINE_SIZE 0x14
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#define FW_CFG_CMDLINE_DATA 0x15
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#define FW_CFG_SETUP_ADDR 0x16
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#define FW_CFG_SETUP_SIZE 0x17
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#define FW_CFG_SETUP_DATA 0x18
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#define FW_CFG_FILE_DIR 0x19
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#define FW_CFG_FILE_FIRST 0x20
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#define FW_CFG_FILE_SLOTS 0x10
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#define FW_CFG_MAX_ENTRY (FW_CFG_FILE_FIRST+FW_CFG_FILE_SLOTS)
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#define FW_CFG_WRITE_CHANNEL 0x4000
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#define FW_CFG_ARCH_LOCAL 0x8000
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#define FW_CFG_ENTRY_MASK ~(FW_CFG_WRITE_CHANNEL | FW_CFG_ARCH_LOCAL)
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#define FW_CFG_INVALID 0xffff
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#ifndef NO_QEMU_PROTOS
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typedef struct FWCfgFile {
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uint32_t size; /* file size */
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uint16_t select; /* write this to 0x510 to read it */
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uint16_t reserved;
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char name[56];
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} FWCfgFile;
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typedef struct FWCfgFiles {
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uint32_t count;
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FWCfgFile f[];
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} FWCfgFiles;
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typedef void (*FWCfgCallback)(void *opaque, uint8_t *data);
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typedef struct _FWCfgState FWCfgState;
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int fw_cfg_add_bytes(FWCfgState *s, uint16_t key, uint8_t *data, uint32_t len);
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int fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value);
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int fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value);
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int fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value);
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int fw_cfg_add_callback(FWCfgState *s, uint16_t key, FWCfgCallback callback,
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void *callback_opaque, uint8_t *data, size_t len);
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int fw_cfg_add_file(FWCfgState *s, const char *dir, const char *filename,
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uint8_t *data, uint32_t len);
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FWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t data_port,
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target_phys_addr_t crl_addr, target_phys_addr_t data_addr);
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#endif /* NO_QEMU_PROTOS */
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#endif
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