diff options
Diffstat (limited to 'roms/qboot/include/fw_cfg.h')
| -rw-r--r-- | roms/qboot/include/fw_cfg.h | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/roms/qboot/include/fw_cfg.h b/roms/qboot/include/fw_cfg.h new file mode 100644 index 000000000..1ddfc1f7e --- /dev/null +++ b/roms/qboot/include/fw_cfg.h @@ -0,0 +1,120 @@ +#ifndef BIOS_FW_CFG_H +#define BIOS_FW_CFG_H 1 + +// List of QEMU fw_cfg entries. DO NOT ADD MORE. (All new content +// should be passed via the fw_cfg "file" interface.) +#define FW_CFG_SIGNATURE 0x00 +#define FW_CFG_ID 0x01 +#define FW_CFG_UUID 0x02 +#define FW_CFG_RAM_SIZE 0x03 +#define FW_CFG_NOGRAPHIC 0x04 +#define FW_CFG_NB_CPUS 0x05 +#define FW_CFG_MACHINE_ID 0x06 +#define FW_CFG_KERNEL_ADDR 0x07 +#define FW_CFG_KERNEL_SIZE 0x08 +#define FW_CFG_KERNEL_CMDLINE 0x09 +#define FW_CFG_INITRD_ADDR 0x0a +#define FW_CFG_INITRD_SIZE 0x0b +#define FW_CFG_BOOT_DEVICE 0x0c +#define FW_CFG_NUMA 0x0d +#define FW_CFG_BOOT_MENU 0x0e +#define FW_CFG_MAX_CPUS 0x0f +#define FW_CFG_KERNEL_ENTRY 0x10 +#define FW_CFG_KERNEL_DATA 0x11 +#define FW_CFG_INITRD_DATA 0x12 +#define FW_CFG_CMDLINE_ADDR 0x13 +#define FW_CFG_CMDLINE_SIZE 0x14 +#define FW_CFG_CMDLINE_DATA 0x15 +#define FW_CFG_SETUP_ADDR 0x16 +#define FW_CFG_SETUP_SIZE 0x17 +#define FW_CFG_SETUP_DATA 0x18 +#define FW_CFG_FILE_DIR 0x19 +#define FW_CFG_FILE_FIRST 0x20 +#define FW_CFG_ARCH_LOCAL 0x8000 +#define FW_CFG_ACPI_TABLES (FW_CFG_ARCH_LOCAL + 0) +#define FW_CFG_SMBIOS_ENTRIES (FW_CFG_ARCH_LOCAL + 1) +#define FW_CFG_IRQ0_OVERRIDE (FW_CFG_ARCH_LOCAL + 2) +#define FW_CFG_E820_TABLE (FW_CFG_ARCH_LOCAL + 3) + +#define FW_CFG_VERSION 0x01 +#define FW_CFG_VERSION_DMA 0x02 + +#define FW_CFG_DMA_CTL_ERROR 0x01 +#define FW_CFG_DMA_CTL_READ 0x02 +#define FW_CFG_DMA_CTL_SKIP 0x04 +#define FW_CFG_DMA_CTL_SELECT 0x08 + +#define FW_CFG_CTL 0x510 +#define FW_CFG_DATA 0x511 +#define FW_CFG_DMA_ADDR_HIGH 0x514 +#define FW_CFG_DMA_ADDR_LOW 0x518 + +#include "ioport.h" + +static inline void fw_cfg_select(uint16_t f) +{ + outw(FW_CFG_CTL, f); +} + +static inline uint32_t fw_cfg_readb(void) +{ + return inb(FW_CFG_DATA); +} + +static inline uint32_t fw_cfg_readw_be(void) +{ + uint32_t val; + + val = inb(FW_CFG_DATA); + val = (val << 8) | inb(FW_CFG_DATA); + return val; +} + +static inline uint32_t fw_cfg_readw_le(void) +{ + uint32_t val; + + val = inb(FW_CFG_DATA); + val = (inb(FW_CFG_DATA) << 8) | val; + return val; +} + +static inline uint32_t fw_cfg_readl_be(void) +{ + uint32_t val; + + val = inb(FW_CFG_DATA); + val = (val << 8) | inb(FW_CFG_DATA); + val = (val << 8) | inb(FW_CFG_DATA); + val = (val << 8) | inb(FW_CFG_DATA); + return val; +} + +static inline uint32_t fw_cfg_readl_le(void) +{ + uint32_t val; + + val = inb(FW_CFG_DATA); + val = (inb(FW_CFG_DATA) << 8) | val; + val = (inb(FW_CFG_DATA) << 16) | val; + val = (inb(FW_CFG_DATA) << 24) | val; + return val; +} + +static inline void fw_cfg_skip(int len) +{ + while (len--) + inb(FW_CFG_DATA); +} + +void fw_cfg_setup(void); +int fw_cfg_file_id(char *name); +uint32_t fw_cfg_file_size(int id); +void fw_cfg_file_select(int id); + +void fw_cfg_read(void *buf, int len); +void fw_cfg_read_entry(int e, void *buf, int len); +void fw_cfg_dma(int control, void *buf, int len); +void fw_cfg_read_file(int e, void *buf, int len); + +#endif |