77873196f3
Right now we load the guest kernel to RAM, fire off the BIOS, hope it doesn't clobber memory and run an option rom that jumps into the kernel. That breaks with SeaBIOS, as that clears memory. So let's read all kernel, module etc. data using the fw_cfg interface when in the int19 handler. This patch implements said mechanism for multiboot. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
46 lines
1.6 KiB
C
46 lines
1.6 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_MAX_ENTRY 0x13
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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 void (*FWCfgCallback)(void *opaque, uint8_t *data);
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int fw_cfg_add_bytes(void *opaque, uint16_t key, uint8_t *data, uint32_t len);
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int fw_cfg_add_i16(void *opaque, uint16_t key, uint16_t value);
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int fw_cfg_add_i32(void *opaque, uint16_t key, uint32_t value);
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int fw_cfg_add_i64(void *opaque, uint16_t key, uint64_t value);
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int fw_cfg_add_callback(void *opaque, uint16_t key, FWCfgCallback callback,
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void *callback_opaque, uint8_t *data, size_t len);
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void *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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