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pnp.asm
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comment |*******************************************************************
* Copyright (c) 1984-2025 Forever Young Software Benjamin David Lunt *
* *
* i440FX BIOS ROM v1.0 *
* FILE: pnp.asm *
* *
* This code is freeware, not public domain. Please use respectfully. *
* *
* You may: *
* - use this code for learning purposes only. *
* - use this code in your own Operating System development. *
* - distribute any code that you produce pertaining to this code *
* as long as it is for learning purposes only, not for profit, *
* and you give credit where credit is due. *
* *
* You may NOT: *
* - distribute this code for any purpose other than listed above. *
* - distribute this code for profit. *
* *
* You MUST: *
* - include this whole comment block at the top of this file. *
* - include contact information to where the original source is located. *
* https://github.com/fysnet/i440fx *
* *
* DESCRIPTION: *
* pnp include file *
* *
* BUILT WITH: NewBasic Assembler *
* http://www.fysnet/newbasic.htm *
* NBASM ver 00.27.15 *
* Command line: nbasm i440fx /z<enter> *
* *
* Last Updated: 17 Jan 2025 *
* *
****************************************************************************
* Notes: *
* *
***************************************************************************|
PNP_IS_REALMODE equ 0 ; guaranteed realmode (use for testing purposes only, otherwise must be 0)
PNP_SUCCESS equ 0x00 ; Function completed successfully
PNP_UNKNOWN_FUNCTION equ 0x81 ; Unknown, or invalid, function number passed
PNP_NOT_SUPPORTED equ 0x82 ; The function is not supported on this system
PNP_INVALID_HANDLE equ 0x83 ; Device node number/handle passed is invalid or out of range
PNP_BAD_PARAMETER equ 0x84 ; Function detected invalid resource descriptors or resource descriptors were specified out of order
PNP_SET_FAILED equ 0x85 ; Set Device Node function failed
PNP_EVENTS_NOT_PENDING equ 0x86 ; There are no events pending
PNP_SYSTEM_NOT_DOCKED equ 0x87 ; The system is currently not docked
PNP_NO_ISA_PNP_CARDS equ 0x88 ; Indicates that no ISA Plug and Play cards are installed in the system
PNP_UNABLE_DOCK_CAPS equ 0x89 ; Indicates that the system was not able to determine the capabilities of the docking station
PNP_NO_BATTERY equ 0x8A ; The system failed the undocking sequence because it detected that the system unit did not have a battery
PNP_RESOURCE_CONFLICT equ 0x8B ; The system failed to successfully dock because it detected a resource conflict with one of the primary boot devices; such as Input, Output, or the IPL device
PNP_BUFFER_TOO_SMALL equ 0x8C ; The memory buffer passed in by the caller was not large enough to hold the data to be returned by the system BIOS
PNP_USE_ESCD_SUPPORT equ 0x8D ; ...system BIOS must be handled through the interfaces defined by the ESCD Specification
PNP_MSG_NOT_SUPPORTED equ 0x8E ; The message passed to the system BIOS through function 04h, Send Message, is not supported on the system
PNP_HARDWARE_ERROR equ 0x8F ; The system BIOS detected a hardware failure
PNP_MSD_NODE_LEN equ 29 ; length of an MSD node (floppy, ide)
PNP_VGA_NODE_LEN equ 105 ; length of the VGA node (VGA, Banshee, Cirrus)
; ECP Parallel port
pnp_node_01:
dw 248 ; length 248
db 1 ; handle
db 41h, 0D0h, 04h, 00h ; 0_10000_01110_10000__0000_0100_0000_0000b = PNP0400 = Standard LPT printer port
db 7,1,2 ; ECP 1.? compliant port
dw 0x0080 ; bits 8:7 = 01b = can be configured at run time
; allocated resource configuration descriptor
db 0_0101_010b ; DMA format, 2 more bytes
db 0x00 ; DMA bitmask (bit 0 = channel 0)
db 0x08 ; compatibility mode, word mode
db 0_0100_010b ; IRQ format, 2 more bytes
dw (1<<7) ; IRQ 7
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0378 ; minimum IO base address
dw 0x0378 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0778 ; minimum IO base address
dw 0x0778 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
db 0_0110_000b ; start dependent function (default: acceptable)
db 0_0101_010b ; DMA format, 2 more bytes
db 0x00 ; DMA bitmask (bit 0 = channel 0)
db 0x08 ; compatibility mode, word mode
db 0_0100_010b ; IRQ format, 2 more bytes
dw ((1<<12) | (1<<7) | (1<<6) | (1<<5) | (1<<4) | (1<<3)) ; IRQ 12,7,6,5,4,3
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0378 ; minimum IO base address
dw 0x0378 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0778 ; minimum IO base address
dw 0x0778 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_0110_000b ; start dependent function (default: acceptable)
db 0_0101_010b ; DMA format, 2 more bytes
db 0x00 ; DMA bitmask (bit 0 = channel 0)
db 0x08 ; compatibility mode, word mode
db 0_0100_010b ; IRQ format, 2 more bytes
dw ((1<<12) | (1<<7) | (1<<6) | (1<<5) | (1<<4) | (1<<3)) ; IRQ 12,7,6,5,4,3
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0278 ; minimum IO base address
dw 0x0278 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0678 ; minimum IO base address
dw 0x0678 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_0110_000b ; start dependent function (default: acceptable)
db 0_0101_010b ; DMA format, 2 more bytes
db 0x00 ; DMA bitmask (bit 0 = channel 0)
db 0x08 ; compatibility mode, word mode
db 0_0100_010b ; IRQ format, 2 more bytes
dw ((1<<12) | (1<<7) | (1<<6) | (1<<5) | (1<<4) | (1<<3)) ; IRQ 12,7,6,5,4,3
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x03BC ; minimum IO base address
dw 0x03BC ; maximum IO base address
db 4 ; minimum alignment
db 4 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x07BC ; minimum IO base address
dw 0x07BC ; maximum IO base address
db 4 ; minimum alignment
db 4 ; size of register space
db 0_0110_000b ; start dependent function (default: acceptable)
db 0_0101_010b ; DMA format, 2 more bytes
db 0x00 ; DMA bitmask (bit 0 = channel 0)
db 0x08 ; compatibility mode, word mode
db 0_0100_010b ; IRQ format, 2 more bytes
dw ((1<<12) | (1<<7) | (1<<6) | (1<<5) | (1<<4) | (1<<3)) ; IRQ 12,7,6,5,4,3
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0378 ; minimum IO base address
dw 0x0378 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0778 ; minimum IO base address
dw 0x0778 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_0110_000b ; start dependent function (default: acceptable)
db 0_0101_010b ; DMA format, 2 more bytes
db 0x0E ; DMA bitmask (bit 0 = channel 0)
db 0x08 ; compatibility mode, word mode
db 0_0100_010b ; IRQ format, 2 more bytes
dw ((1<<12) | (1<<7) | (1<<6) | (1<<5) | (1<<4) | (1<<3)) ; IRQ 12,7,6,5,4,3
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0278 ; minimum IO base address
dw 0x0278 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0678 ; minimum IO base address
dw 0x0678 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_0110_000b ; start dependent function (default: acceptable)
db 0_0101_010b ; DMA format, 2 more bytes
db 0x0E ; DMA bitmask (bit 0 = channel 0)
db 0x08 ; compatibility mode, word mode
db 0_0100_010b ; IRQ format, 2 more bytes
dw ((1<<12) | (1<<7) | (1<<6) | (1<<5) | (1<<4) | (1<<3)) ; IRQ 12,7,6,5,4,3
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x03BC ; minimum IO base address
dw 0x03BC ; maximum IO base address
db 4 ; minimum alignment
db 4 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x07BC ; minimum IO base address
dw 0x07BC ; maximum IO base address
db 4 ; minimum alignment
db 4 ; size of register space
db 0_0110_000b ; start dependent function (default: acceptable)
db 0_0101_010b ; DMA format, 2 more bytes
db 0x00 ; DMA bitmask (bit 0 = channel 0)
db 0x08 ; compatibility mode, word mode
db 0_0100_010b ; IRQ format, 2 more bytes
dw 0x0000
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0378 ; minimum IO base address
dw 0x0378 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0778 ; minimum IO base address
dw 0x0778 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_0110_000b ; start dependent function (default: acceptable)
db 0_0101_010b ; DMA format, 2 more bytes
db 0x00 ; DMA bitmask (bit 0 = channel 0)
db 0x08 ; compatibility mode, word mode
db 0_0100_010b ; IRQ format, 2 more bytes
dw 0x0000
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0278 ; minimum IO base address
dw 0x0278 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0678 ; minimum IO base address
dw 0x0678 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_0110_000b ; start dependent function (default: acceptable)
db 0_0101_010b ; DMA format, 2 more bytes
db 0x00 ; DMA bitmask (bit 0 = channel 0)
db 0x08 ; compatibility mode, word mode
db 0_0100_010b ; IRQ format, 2 more bytes
dw 0x0000
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x03BC ; minimum IO base address
dw 0x03BC ; maximum IO base address
db 4 ; minimum alignment
db 4 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x07BC ; minimum IO base address
dw 0x07BC ; maximum IO base address
db 4 ; minimum alignment
db 4 ; size of register space
db 0_0111_000b ; end dependent function
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; 16550A-compatible COM port
pnp_node_02:
dw 66 ; length 66
db 2 ; handle
db 41h, 0D0h, 05h, 01h ; 0_10000_01110_10000__0000_0101_0000_0001b = PNP0501 = 16550A-compatible COM port
db 7,0,2 ; 16550-compatible
dw 0x0080 ; bits 8:7 = 01b = can be configured at run time
; allocated resource configuration descriptor
db 0_0100_010b ; IRQ format, 2 more bytes
dw (1<<4) ; IRQ 4
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x03F8 ; minimum IO base address
dw 0x03F8 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
db 0_0110_000b ; start dependent function (default: acceptable)
db 0_0100_010b ; IRQ format, 2 more bytes
dw (1<<4) ; IRQ 4
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x03F8 ; minimum IO base address
dw 0x03F8 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_0110_000b ; start dependent function (default: acceptable)
db 0_0100_010b ; IRQ format, 2 more bytes
dw (1<<3) ; IRQ 3
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x03E8 ; minimum IO base address
dw 0x03E8 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_0110_000b ; start dependent function (default: acceptable)
db 0_0100_010b ; IRQ format, 2 more bytes
dw ((1<<12) | (1<<7) | (1<<6) | (1<<5) | (1<<4) | (1<<3)) ; IRQ 12,7,6,5,4,3
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0110 ; minimum IO base address
dw 0x07F8 ; maximum IO base address
db 8 ; minimum alignment
db 8 ; size of register space
db 0_0111_000b ; end dependent function
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; APIC
pnp_node_03:
dw 42 ; length 42
db 3 ; handle
db 41h, 0D0h, 00h, 03h ; 0_10000_01110_10000__0000_0000_0000_0011b = PNP0003 = APIC
db 8,0x80,0 ; Other System Peripheral
dw 0x0003 ; is not configurable, cannot be disabled
; allocated resource configuration descriptor
db 1_0000110b ; 32-bit fixed location memory range descriptor
dw 0x0009 ; 9 bytes in length
db 00011101b ; info: 32-bit supported, high-address, non-cacheable, writable
dd IOAPIC_BASE_ADDR ; base address (I/O APIC)
dd 0x00010000 ; length (64k)
db 1_0000110b ; 32-bit fixed location memory range descriptor
dw 0x0009 ; 9 bytes in length
db 00011101b ; info: 32-bit supported, high-address, non-cacheable, writable
dd APIC_BASE_ADDR ; base address (APIC)
dd 0x00010000 ; length (64k)
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; HPET
pnp_node_04:
dw 30 ; length 30
db 4 ; handle
db 41h, 0D0h, 01h, 03h ; 0_10000_01110_10000__0000_0001_0000_0011b = PNP0103 = High precision event timer
db 8,0x80,0 ; Other System Peripheral
dw 0x0003 ; is not configurable, cannot be disabled
; allocated resource configuration descriptor
db 1_0000110b ; 32-bit fixed location memory range descriptor
dw 0x0009 ; 9 bytes in length
db 00011101b ; info: 32-bit supported, high-address, non-cacheable, writable
dd 0xFED00000 ; base address (HPET)
dd 0x00001000 ; length
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; Mouse Controller
pnp_node_05:
dw 26 ; length 26
db 5 ; handle
db 41h, 0D0h, 0Fh, 13h ; 0_10000_01110_10000__0000_1111_0001_0011b = PNP0F13 = PS/2 Port for PS/2-style Mice
db 9,2,0 ; Mouse Controller
dw 0x0180 ; bits 8:7 = 11b = can only be configured at run time
; allocated resource configuration descriptor
db 0_0100_010b ; IRQ format, 2 more bytes
dw (1<<12) ; IRQ 12
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
db 0_0110_000b ; start dependent function (default: acceptable)
db 0_0100_010b ; IRQ format, 2 more bytes
dw (1<<12) ; IRQ 12
db 0_0111_000b ; end dependent function
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; System Board
pnp_node_06:
dw 94 ; length 94
db 6 ; handle
db 41h, 0D0h, 0Ch, 01h ; 0_10000_01110_10000__0000_1100_0000_0001b = PNP0C01 = System Board
db 5,0,0 ; General RAM
dw 0x0003 ; is not configurable, cannot be disabled
; allocated resource configuration descriptor
db 1_0000110b ; 32-bit fixed location memory range descriptor
dw 0x0009 ; 9 bytes in length
db 00010011b ; info: 8- and 16-bit supported, read cache-write through, writable
dd 0x00000000 ; base address
dd 0x000A0000 ; length
db 1_0000110b ; 32-bit fixed location memory range descriptor
dw 0x0009 ; 9 bytes in length
db 00110010b ; info: shadowable, 8- and 16-bit supported, read cache-write through, non-writable
dd 0x000E0000 ; base address
dd 0x00020000 ; length
db 1_0000110b ; 32-bit fixed location memory range descriptor
dw 0x0009 ; 9 bytes in length
db 00010011b ; info: 8- and 16-bit supported, read cache-write through, writable
dd 0x00100000 ; base address
dd ? ; length (this length gets patched before we block shadowram) (** watch modifying this location **)
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0800 ; minimum IO base address
dw 0x0800 ; maximum IO base address
db 0 ; minimum alignment
db 224 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0C00 ; minimum IO base address
dw 0x0C00 ; maximum IO base address
db 0 ; minimum alignment
db 128 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0062 ; minimum IO base address
dw 0x0062 ; maximum IO base address
db 0 ; minimum alignment
db 2 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0065 ; minimum IO base address
dw 0x0065 ; maximum IO base address
db 0 ; minimum alignment
db 11 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x00E0 ; minimum IO base address
dw 0x00E0 ; maximum IO base address
db 0 ; minimum alignment
db 16 ; size of register space
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; ISA PIC (8259 Compatible)
pnp_node_07:
dw 45 ; length 45
db 7 ; handle
db 41h, 0D0h, 00h, 00h ; 0_10000_01110_10000__0000_0000_0000_0000b = PNP0000 = AT Interrupt Controller
db 8,0,1 ; ISA PIC (8259 Compatible)
dw 0x0003 ; is not configurable, cannot be disabled
; allocated resource configuration descriptor
db 0_0100_010b ; IRQ format, 2 more bytes
dw (1<<2) ; IRQ 2
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0020 ; minimum IO base address
dw 0x0020 ; maximum IO base address
db 0 ; minimum alignment
db 0x20 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x00A0 ; minimum IO base address
dw 0x00A0 ; maximum IO base address
db 0 ; minimum alignment
db 0x20 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x04D0 ; minimum IO base address
dw 0x04D0 ; maximum IO base address
db 0 ; minimum alignment
db 2 ; size of register space
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; ISA System Timer
pnp_node_08:
dw 29 ; length 29
db 8 ; handle
db 41h, 0D0h, 01h, 00h ; 0_10000_01110_10000__0000_0001_0000_0000b = PNP0100 = AT Timer
db 8,2,1 ; ISA System Timer
dw 0x0003 ; is not configurable, cannot be disabled
; allocated resource configuration descriptor
db 0_0100_010b ; IRQ format, 2 more bytes
dw (1<<0) ; IRQ 0
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0040 ; minimum IO base address
dw 0x0040 ; maximum IO base address
db 0 ; minimum alignment
db 32 ; size of register space
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; ISA RTC Controller
pnp_node_09:
dw 29 ; length 29
db 9 ; handle
db 41h, 0D0h, 0Bh, 00h ; 0_10000_01110_10000__0000_1011_0000_0000b = PNP0B00 = AT Real-Time Clock
db 8,3,1 ; ISA RTC Controller
dw 0x0003 ; is not configurable, cannot be disabled
; allocated resource configuration descriptor
db 0_0100_010b ; IRQ format, 2 more bytes
dw (1<<8) ; IRQ 8
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0070 ; minimum IO base address
dw 0x0070 ; maximum IO base address
db 0 ; minimum alignment
db 16 ; size of register space
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; Keyboard Controller
pnp_node_10:
dw 37 ; length 37
db 10 ; handle
db 41h, 0D0h, 03h, 03h ; 0_10000_01110_10000__0000_0011_0000_0011b = PNP0303 = IBM Enhanced (101/102-key, PS/2 mouse support)
db 9,0,0 ; Keyboard Controller
dw 0x000B ; primary input device, is not configurable, cannot be disabled
; allocated resource configuration descriptor
db 0_0100_010b ; IRQ format, 2 more bytes
dw (1<<1) ; IRQ 1
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0060 ; minimum IO base address
dw 0x0060 ; maximum IO base address
db 0 ; minimum alignment
db 1 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0064 ; minimum IO base address
dw 0x0064 ; maximum IO base address
db 0 ; minimum alignment
db 1 ; size of register space
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; Coprocessor
pnp_node_11:
dw 29 ; length 29
db 11 ; handle
db 41h, 0D0h, 0Ch, 04h ; 0_10000_01110_10000__0000_0011_0000_0011b = PNP0C04 = Math Coprocessor
db 8,0x80,0 ; Other System Peripheral
dw 0x0003 ; is not configurable, cannot be disabled
; allocated resource configuration descriptor
db 0_0100_010b ; IRQ format, 2 more bytes
dw (1<<13) ; IRQ 13
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x00F0 ; minimum IO base address
dw 0x00F0 ; maximum IO base address
db 0 ; minimum alignment
db 16 ; size of register space
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; ISA DMA Controller
pnp_node_12:
dw 45 ; length 45
db 12 ; handle
db 41h, 0D0h, 02h, 00h ; 0_10000_01110_10000__0000_0010_0000_0000b = PNP0200 = AT DMA Controller
db 8,1,1 ; ISA DMA Controller
dw 0x0003 ; is not configurable, cannot be disabled
; allocated resource configuration descriptor
db 0_0101_010b ; DMA format, 2 more bytes
db 0x10 ; DMA bitmask (channel 4)
db 0x12 ; 16-bit and word count
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0000 ; minimum IO base address
dw 0x0000 ; maximum IO base address
db 0 ; minimum alignment
db 32 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0080 ; minimum IO base address
dw 0x0080 ; maximum IO base address
db 0 ; minimum alignment
db 32 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x00C0 ; minimum IO base address
dw 0x00C0 ; maximum IO base address
db 0 ; minimum alignment
db 32 ; size of register space
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; AT-style speaker sound
pnp_node_13:
dw 26 ; length 26
db 13 ; handle
db 41h, 0D0h, 08h, 00h ; 0_10000_01110_10000__0000_1000_0000_0000b = PNP0800 = AT-style speaker sound
db 8,0x80,0 ; Other System Peripheral
dw 0x0003 ; is not configurable, cannot be disabled
; allocated resource configuration descriptor
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0061 ; minimum IO base address
dw 0x0061 ; maximum IO base address
db 0 ; minimum alignment
db 1 ; size of register space
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; General PCI Bridge
pnp_node_14:
dw 26 ; length 26
db 14 ; handle
db 41h, 0D0h, 0Ah, 03h ; 0_10000_01110_10000__0000_1010_0000_0011b = PNP0A03 = PCI Bus
db 6,4,0 ; General PCI Bridge
dw 0x0003 ; is not configurable, cannot be disabled
; allocated resource configuration descriptor
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x0CF8 ; minimum IO base address
dw 0x0CF8 ; maximum IO base address
db 0 ; minimum alignment
db 8 ; size of register space
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; Standard VGA (only used if no PCI vga found) (if PCI vga found, the floppy or hdd will overwrite this area)
pnp_node_15:
dw 70 ; length 70
db 15 ; handle
db 41h, 0D0h, 09h, 00h ; 0_10000_01110_10000__0000_1001_0000_0000b = PNP0900 = VGA compatible
db 3,0,0 ; VGA Compatible Controller
dw 0x0003 ; is not configurable, cannot be disabled
; allocated resource configuration descriptor
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x03B0 ; minimum IO base address
dw 0x03B0 ; maximum IO base address
db 0 ; minimum alignment
db 12 ; size of register space
db 0_1000_111b ; I/O Port descriptor, 7 more bytes
db 1 ; info: decodes all 16-bit ISA bus
dw 0x03C0 ; minimum IO base address
dw 0x03C0 ; maximum IO base address
db 0 ; minimum alignment
db 32 ; size of register space
db 1_0000110b ; 32-bit fixed location memory range descriptor
dw 0x0009 ; 9 bytes in length
db 00010001b ; info: 8/16-bit supported, non-cacheable, writable
dd 0x000A0000 ; base address
dd 0x0000FFFF ; length
db 1_0000110b ; 32-bit fixed location memory range descriptor
dw 0x0009 ; 9 bytes in length
db 00010001b ; info: 8/16-bit supported, non-cacheable, writable
dd 0x000B0000 ; base address
dd 0x0000FFFF ; length
db 1_0000110b ; 32-bit fixed location memory range descriptor
dw 0x0009 ; 9 bytes in length
db 00010001b ; info: 8/16-bit supported, non-cacheable, writable
dd 0x000C0000 ; base address
dd 0x00007FFF ; length
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
db 0_1111_001b ; end tag, 1 more byte
db 0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
pnp_node_16:
; we reserved enough room for one floppy drive and two ATA controllers, each PNP_MSD_NODE_LEN bytes
dup (PNP_MSD_NODE_LEN * 3),0
PNP_NODE_LIST_S struct
handle byte
next byte
size word
location word
PNP_NODE_LIST_S ends
; a list of the nodes we have
pnp_node_list db 1 ; handle
db 2 ; next handle (or 0xFF for none)
dw 248 ; size of node
dw offset pnp_node_01 ; offset of node
db 2 ; handle
db 3 ; next handle (or 0xFF for none)
dw 66 ; size of node
dw offset pnp_node_02 ; offset of node
db 3 ; handle
db 4 ; next handle (or 0xFF for none)
dw 42 ; size of node
dw offset pnp_node_03 ; offset of node
db 4 ; handle
db 5 ; next handle (or 0xFF for none)
dw 30 ; size of node
dw offset pnp_node_04 ; offset of node
db 5 ; handle
db 6 ; next handle (or 0xFF for none)
dw 26 ; size of node
dw offset pnp_node_05 ; offset of node
db 6 ; handle
db 7 ; next handle (or 0xFF for none)
dw 94 ; size of node
dw offset pnp_node_06 ; offset of node
db 7 ; handle
db 8 ; next handle (or 0xFF for none)
dw 45 ; size of node
dw offset pnp_node_07 ; offset of node
db 8 ; handle
db 9 ; next handle (or 0xFF for none)
dw 29 ; size of node
dw offset pnp_node_08 ; offset of node
db 9 ; handle
db 10 ; next handle (or 0xFF for none)
dw 29 ; size of node
dw offset pnp_node_09 ; offset of node
db 10 ; handle
db 11 ; next handle (or 0xFF for none)
dw 37 ; size of node
dw offset pnp_node_10 ; offset of node
db 11 ; handle
db 12 ; next handle (or 0xFF for none)
dw 29 ; size of node
dw offset pnp_node_11 ; offset of node
db 12 ; handle
db 13 ; next handle (or 0xFF for none)
dw 45 ; size of node
dw offset pnp_node_12 ; offset of node
db 13 ; handle
db 14 ; next handle (or 0xFF for none)
dw 26 ; size of node
dw offset pnp_node_13 ; offset of node
db 14 ; handle
db 0xFF ; next handle (or 0xFF for none)
dw 26 ; size of node
dw offset pnp_node_14 ; offset of node
; we save room to add up to four more entries
; (one VGA, one floppy drive, two ata controllers)
; these are added in 'pnp_initialize'
dup (4 * sizeof(PNP_NODE_LIST_S)),0
; during BIOS initialization, these will be read/write accessible.
; after initialization, they are read only
pnp_node_count db 14 ; count of valid nodes (before pnp_initialize call)
pnp_node_size dw 248 ; size of largest node
pnp_next_node dw offset pnp_node_15
pnp_next_idx dw (pnp_node_list + ((14 - 1) * sizeof(PNP_NODE_LIST_S))) ; *** points to the current last entry ***
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; Initialize the PNP
; Shaddow Ram is implemented. We can write to 0x000E0000->0x000FFFFF
; on entry:
; nothing
; on return
; nothing
; destroys nothing
pnp_initialize proc near uses eax bx cx dx ds
mov ax,EBDA_SEG
mov ds,ax
; we need to patch the extended memory value in our physical memory node
mov eax,[EBDA_DATA->mem_base_ram_size]
sub eax,0x00100000
mov cs:[pnp_node_06 + ((4*12) - sizeof(dword))],eax ; third 12-byte block, last dword of that block
; check if a pci vga card is found
; if not, add a standard VGA entry
call pnp_add_vga
; we add one floppy disk controller if we found one
cmp byte [EBDA_DATA->fdd_count],0
je short @f
mov eax,0x0007D041 ; little_endian(0_10000_01110_10000__0000_0111_0000_0000b) = PNP0700 = PC standard floppy disk controller
mov cx,0x0206 ; Generic Floppy / irq 6
mov dx,0x3F0
call pnp_add_msd
; go through the first two ata controllers
@@: mov cx,2
xor bx,bx
pnp_add_msd_0:
cmp byte [bx+EBDA_DATA->ata_0_iface],ATA_IFACE_NONE
je short @f
push cx
mov eax,0x0006D041 ; little_endian(0_10000_01110_10000__0000_0110_0000_0000b) = PNP0600 = Generic ESDI/IDE/ATA compatible hard disk controller
mov ch,0x01 ; Generic IDE
mov cl,[bx+EBDA_DATA->ata_0_irq]
mov dx,[bx+EBDA_DATA->ata_0_iobase1]
call pnp_add_msd
pop cx
@@: add bx,ATA_CHANNEL_SIZE
loop short pnp_add_msd_0
ret
pnp_initialize endp
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; add a floppy/hard disk/cdrom to the pnp node list
; on entry:
; eax = id (PNP0700 for floppy, PNP0600 for IDE)
; cl = irq (6 = irq 6)
; ch = type (2 = floppy, 1 = ide)
; dx = base0 IO address (0x3F0, 0x1F0, etc)
; on return
; nothing
; destroys none
pnp_add_msd proc near uses eax bx cx dx ds
mov bx,BIOS_BASE
mov ds,bx
mov bx,pnp_next_node ; offset to next available space for node data
inc byte pnp_node_count ; increment the count
push ax ; preserved the id
mov al,pnp_node_count ;
; build node
mov word [bx+0],PNP_MSD_NODE_LEN ; length
mov [bx+2],al ; handle
pop ax ; restore the id
mov [bx+3],eax ; id
mov byte [bx+7],1 ;
mov [bx+8],ch ; type
mov byte [bx+9],0 ;
mov word [bx+10],0x0090 ; is configurable at runtime, primary IPL device
; build IRQ format
mov byte [bx+12],0_0100_010b ; IRQ format, 2 more bytes
mov ax,1
shl ax,cl
mov [bx+13],ax ; IRQ cl
; allocated resource configuration descriptor
mov byte [bx+15],0_1000_111b ; I/O Port descriptor, 7 more bytes
mov byte [bx+16],1 ; info: decodes all 16-bit ISA bus
mov [bx+17],dx ; minimum IO base address
mov [bx+19],dx ; maximum IO base address
mov byte [bx+21],8 ; minimum alignment
mov byte [bx+22],8 ; size of register space
; floppy disk can have this added
; db 0_0101_010b ; DMA format, 2 more bytes
; db 0x04 ; DMA bitmask (bit 2 = channel 2)
; db 0x08 ; compatibility mode, word mode
; end tag
mov byte [bx+23],0_1111_001b ; end tag, 1 more byte
mov byte [bx+24],0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; possible resource configuration descriptor block:
; end tag
mov byte [bx+25],0_1111_001b ; end tag, 1 more byte
mov byte [bx+26],0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; compatible device identifiers
; end tag
mov byte [bx+27],0_1111_001b ; end tag, 1 more byte
mov byte [bx+28],0 ; 0 = no crc (!0 = zero byte crc from first byte in this block?)
; update the location, size, and count
add word pnp_next_node,PNP_MSD_NODE_LEN
; update the list
mov al,pnp_node_count
mov dx,bx ; save location of this node
mov bx,pnp_next_idx ; pointer to last used entry
mov [bx+PNP_NODE_LIST_S->next],al ; mark the current last with next node
add bx,sizeof(PNP_NODE_LIST_S)
mov [bx+PNP_NODE_LIST_S->handle],al
mov byte [bx+PNP_NODE_LIST_S->next],0xFF
mov word [bx+PNP_NODE_LIST_S->size],PNP_MSD_NODE_LEN
mov [bx+PNP_NODE_LIST_S->location],dx
; update to this entry
mov pnp_next_idx,bx
ret
pnp_add_msd endp
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; if a PCI VGA is not found, add a Standard VGA to the list
; on entry:
; nothing
; on return
; nothing
; destroys none
pnp_add_vga proc near uses ax bx dx si ds
; search the PCI for a VGA device
mov ax,0xB103
; unused class subclass prog int
mov ecx,00000000_00000011_00000000_00000000b