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authorFreya Murphy <freya@freyacat.org>2025-04-03 16:47:52 -0400
committerFreya Murphy <freya@freyacat.org>2025-04-03 16:47:52 -0400
commit01221a0d1009f303014a3b26348494f503aeeb7a (patch)
treec93ce6ce2dd478b83fd7b33e4bd3bbf4f3d37be8 /boot
parentremove undeeded headers, add global lib.h header (diff)
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boot headers moved
Diffstat (limited to 'boot')
-rw-r--r--boot/include/arch.h347
-rw-r--r--boot/include/bios.h66
-rw-r--r--boot/include/bootstrap.h100
3 files changed, 255 insertions, 258 deletions
diff --git a/boot/include/arch.h b/boot/include/arch.h
index 113c76b..a0a0b45 100644
--- a/boot/include/arch.h
+++ b/boot/include/arch.h
@@ -15,25 +15,25 @@
/*
** Video stuff
*/
-#define VID_BASE_ADDR 0xB8000
+#define VID_BASE_ADDR 0xB8000
/*
** Memory management
*/
-#define SEG_PRESENT 0x80
-#define SEG_PL_0 0x00
-#define SEG_PL_1 0x20
-#define SEG_PL_2 0x40
-#define SEG_PL_3 0x50
-#define SEG_SYSTEM 0x00
-#define SEG_NON_SYSTEM 0x10
-#define SEG_32BIT 0x04
-#define DESC_IGATE 0x06
+#define SEG_PRESENT 0x80
+#define SEG_PL_0 0x00
+#define SEG_PL_1 0x20
+#define SEG_PL_2 0x40
+#define SEG_PL_3 0x50
+#define SEG_SYSTEM 0x00
+#define SEG_NON_SYSTEM 0x10
+#define SEG_32BIT 0x04
+#define DESC_IGATE 0x06
/*
** Exceptions
*/
-#define N_EXCEPTIONS 256
+#define N_EXCEPTIONS 256
/*
** Bit definitions in registers
@@ -45,91 +45,91 @@
/*
** EFLAGS
*/
-#define EFL_RSVD 0xffc00000 /* reserved */
-#define EFL_MB0 0x00008020 /* must be zero */
-#define EFL_MB1 0x00000002 /* must be 1 */
+#define EFL_RSVD 0xffc00000 /* reserved */
+#define EFL_MB0 0x00008020 /* must be zero */
+#define EFL_MB1 0x00000002 /* must be 1 */
-#define EFL_ID 0x00200000
-#define EFL_VIP 0x00100000
-#define EFL_VIF 0x00080000
-#define EFL_AC 0x00040000
-#define EFL_VM 0x00020000
-#define EFL_RF 0x00010000
-#define EFL_NT 0x00004000
+#define EFL_ID 0x00200000
+#define EFL_VIP 0x00100000
+#define EFL_VIF 0x00080000
+#define EFL_AC 0x00040000
+#define EFL_VM 0x00020000
+#define EFL_RF 0x00010000
+#define EFL_NT 0x00004000
#define EFL_IOPL 0x00003000
-#define EFL_OF 0x00000800
-#define EFL_DF 0x00000400
-#define EFL_IF 0x00000200
-#define EFL_TF 0x00000100
-#define EFL_SF 0x00000080
-#define EFL_ZF 0x00000040
-#define EFL_AF 0x00000010
-#define EFL_PF 0x00000004
-#define EFL_CF 0x00000001
+#define EFL_OF 0x00000800
+#define EFL_DF 0x00000400
+#define EFL_IF 0x00000200
+#define EFL_TF 0x00000100
+#define EFL_SF 0x00000080
+#define EFL_ZF 0x00000040
+#define EFL_AF 0x00000010
+#define EFL_PF 0x00000004
+#define EFL_CF 0x00000001
/*
** CR0, CR1, CR2, CR3, CR4
**
** IA-32 V3, page 2-12.
*/
-#define CR0_RSVD 0x1ffaffc0
-#define CR0_PG 0x80000000
-#define CR0_CD 0x40000000
-#define CR0_NW 0x20000000
-#define CR0_AM 0x00040000
-#define CR0_WP 0x00010000
-#define CR0_NE 0x00000020
-#define CR0_ET 0x00000010
-#define CR0_TS 0x00000008
-#define CR0_EM 0x00000004
-#define CR0_MP 0x00000002
-#define CR0_PE 0x00000001
+#define CR0_RSVD 0x1ffaffc0
+#define CR0_PG 0x80000000
+#define CR0_CD 0x40000000
+#define CR0_NW 0x20000000
+#define CR0_AM 0x00040000
+#define CR0_WP 0x00010000
+#define CR0_NE 0x00000020
+#define CR0_ET 0x00000010
+#define CR0_TS 0x00000008
+#define CR0_EM 0x00000004
+#define CR0_MP 0x00000002
+#define CR0_PE 0x00000001
-#define CR1_RSVD 0xffffffff
+#define CR1_RSVD 0xffffffff
-#define CR2_RSVD 0x00000000
+#define CR2_RSVD 0x00000000
#define CR2_PF_LIN_ADDR 0xffffffff
-#define CR3_RSVD 0x00000fe7
-#define CR3_PD_BASE 0xfffff000
-#define CR3_PCD 0x00000010
-#define CR3_PWT 0x00000008
+#define CR3_RSVD 0x00000fe7
+#define CR3_PD_BASE 0xfffff000
+#define CR3_PCD 0x00000010
+#define CR3_PWT 0x00000008
-#define CR4_RSVD 0xfd001000
-#define CR4_UINT 0x02000000
-#define CR4_PKS 0x01000000
-#define CR4_CET 0x00800000
-#define CR4_PKE 0x00400000
-#define CR4_SMAP 0x00200000
-#define CR4_SMEP 0x00100000
-#define CR4_KL 0x00080000
-#define CR4_OSXS 0x00040000
-#define CR4_PCID 0x00020000
-#define CR4_FSGS 0x00010000
-#define CR4_SMXE 0x00004000
-#define CR4_VMXE 0x00002000
-#define CR4_LA57 0x00001000
-#define CR4_UMIP 0x00000800
-#define CR4_OSXMMEXCPT 0x00000400
-#define CR4_OSFXSR 0x00000200
-#define CR4_PCE 0x00000100
-#define CR4_PGE 0x00000080
-#define CR4_MCE 0x00000040
-#define CR4_PAE 0x00000020
-#define CR4_PSE 0x00000010
-#define CR4_DE 0x00000008
-#define CR4_TSD 0x00000004
-#define CR4_PVI 0x00000002
-#define CR4_VME 0x00000001
+#define CR4_RSVD 0xfd001000
+#define CR4_UINT 0x02000000
+#define CR4_PKS 0x01000000
+#define CR4_CET 0x00800000
+#define CR4_PKE 0x00400000
+#define CR4_SMAP 0x00200000
+#define CR4_SMEP 0x00100000
+#define CR4_KL 0x00080000
+#define CR4_OSXS 0x00040000
+#define CR4_PCID 0x00020000
+#define CR4_FSGS 0x00010000
+#define CR4_SMXE 0x00004000
+#define CR4_VMXE 0x00002000
+#define CR4_LA57 0x00001000
+#define CR4_UMIP 0x00000800
+#define CR4_OSXMMEXCPT 0x00000400
+#define CR4_OSFXSR 0x00000200
+#define CR4_PCE 0x00000100
+#define CR4_PGE 0x00000080
+#define CR4_MCE 0x00000040
+#define CR4_PAE 0x00000020
+#define CR4_PSE 0x00000010
+#define CR4_DE 0x00000008
+#define CR4_TSD 0x00000004
+#define CR4_PVI 0x00000002
+#define CR4_VME 0x00000001
/*
** PMode segment selector field masks
**
** IA-32 V3, page 3-8.
*/
-#define SEG_SEL_IX_MASK 0xfff8
-#define SEG_SEL_TI_MASK 0x0004
-#define SEG_SEL_RPL_MASK 0x0003
+#define SEG_SEL_IX_MASK 0xfff8
+#define SEG_SEL_TI_MASK 0x0004
+#define SEG_SEL_RPL_MASK 0x0003
/*
** Segment descriptor bytes
@@ -150,43 +150,43 @@
** 4: system/user
** 3-0: type
*/
-#define SEG_ACCESS_P_MASK 0x80
-# define SEG_PRESENT 0x80
-# define SEG_NOT_PRESENT 0x00
+#define SEG_ACCESS_P_MASK 0x80
+#define SEG_PRESENT 0x80
+#define SEG_NOT_PRESENT 0x00
-#define SEG_ACCESS_DPL_MASK 0x60
-# define SEG_DPL_0 0x00
-# define SEG_DPL_1 0x20
-# define SEG_DPL_2 0x40
-# define SEG_DPL_3 0x60
+#define SEG_ACCESS_DPL_MASK 0x60
+#define SEG_DPL_0 0x00
+#define SEG_DPL_1 0x20
+#define SEG_DPL_2 0x40
+#define SEG_DPL_3 0x60
-#define SEG_ACCESS_S_MASK 0x10
-# define SEG_SYSTEM 0x00
-# define SEG_NON_SYSTEM 0x10
+#define SEG_ACCESS_S_MASK 0x10
+#define SEG_SYSTEM 0x00
+#define SEG_NON_SYSTEM 0x10
-#define SEG_TYPE_MASK 0x0f
-# define SEG_DATA_A_BIT 0x1
-# define SEG_DATA_W_BIT 0x2
-# define SEG_DATA_E_BIT 0x4
-# define SEG_CODE_A_BIT 0x1
-# define SEG_CODE_R_BIT 0x2
-# define SEG_CODE_C_BIT 0x4
-# define SEG_DATA_RO 0x0
-# define SEG_DATA_ROA 0x1
-# define SEG_DATA_RW 0x2
-# define SEG_DATA_RWA 0x3
-# define SEG_DATA_RO_XD 0x4
-# define SEG_DATA_RO_XDA 0x5
-# define SEG_DATA_RW_XW 0x6
-# define SEG_DATA_RW_XWA 0x7
-# define SEG_CODE_XO 0x8
-# define SEG_CODE_XOA 0x9
-# define SEG_CODE_XR 0xa
-# define SEG_CODE_XRA 0xb
-# define SEG_CODE_XO_C 0xc
-# define SEG_CODE_XO_CA 0xd
-# define SEG_CODE_XR_C 0xe
-# define SEG_CODE_XR_CA 0xf
+#define SEG_TYPE_MASK 0x0f
+#define SEG_DATA_A_BIT 0x1
+#define SEG_DATA_W_BIT 0x2
+#define SEG_DATA_E_BIT 0x4
+#define SEG_CODE_A_BIT 0x1
+#define SEG_CODE_R_BIT 0x2
+#define SEG_CODE_C_BIT 0x4
+#define SEG_DATA_RO 0x0
+#define SEG_DATA_ROA 0x1
+#define SEG_DATA_RW 0x2
+#define SEG_DATA_RWA 0x3
+#define SEG_DATA_RO_XD 0x4
+#define SEG_DATA_RO_XDA 0x5
+#define SEG_DATA_RW_XW 0x6
+#define SEG_DATA_RW_XWA 0x7
+#define SEG_CODE_XO 0x8
+#define SEG_CODE_XOA 0x9
+#define SEG_CODE_XR 0xa
+#define SEG_CODE_XRA 0xb
+#define SEG_CODE_XO_C 0xc
+#define SEG_CODE_XO_CA 0xd
+#define SEG_CODE_XR_C 0xe
+#define SEG_CODE_XR_CA 0xf
/*
** Byte 6: sizes
@@ -197,48 +197,47 @@
** 3-0: upper 4 bits of limit
** 7: base address 31:24
*/
-#define SEG_SIZE_G_MASK 0x80
-# define SEG_GRAN_BYTE 0x00
-# define SEG_GRAN_4KBYTE 0x80
+#define SEG_SIZE_G_MASK 0x80
+#define SEG_GRAN_BYTE 0x00
+#define SEG_GRAN_4KBYTE 0x80
-#define SEG_SIZE_D_B_MASK 0x40
-# define SEG_DB_16BIT 0x00
-# define SEG_DB_32BIT 0x40
+#define SEG_SIZE_D_B_MASK 0x40
+#define SEG_DB_16BIT 0x00
+#define SEG_DB_32BIT 0x40
-#define SEG_SIZE_L_MASK 0x20
-# define SEG_L_64BIT 0x20
-# define SEG_L_32BIT 0x00
+#define SEG_SIZE_L_MASK 0x20
+#define SEG_L_64BIT 0x20
+#define SEG_L_32BIT 0x00
-#define SEG_SIZE_AVL_MASK 0x10
+#define SEG_SIZE_AVL_MASK 0x10
#define SEG_SIZE_LIM_19_16_MASK 0x0f
-
/*
** System-segment and gate-descriptor types
**
** IA-32 V3, page 3-15.
*/
- // type 0: reserved
+// type 0: reserved
#define SEG_SYS_16BIT_TSS_AVAIL 0x1
-#define SEG_SYS_LDT 0x2
-#define SEG_SYS_16BIT_TSS_BUSY 0x3
+#define SEG_SYS_LDT 0x2
+#define SEG_SYS_16BIT_TSS_BUSY 0x3
#define SEG_SYS_16BIT_CALL_GATE 0x4
-#define SEG_SYS_TASK_GATE 0x5
-#define SEG_SYS_16BIT_INT_GATE 0x6
+#define SEG_SYS_TASK_GATE 0x5
+#define SEG_SYS_16BIT_INT_GATE 0x6
#define SEG_SYS_16BIT_TRAP_GATE 0x7
- // type 8: reserved
+// type 8: reserved
#define SEG_SYS_32BIT_TSS_AVAIL 0x9
- // type A: reserved
-#define SEG_SYS_32BIT_TSS_BUSY 0xb
+// type A: reserved
+#define SEG_SYS_32BIT_TSS_BUSY 0xb
#define SEG_SYS_32BIT_CALL_GATE 0xc
- // type D: reserved
-#define SEG_SYS_32BIT_INT_GATE 0xe
+// type D: reserved
+#define SEG_SYS_32BIT_INT_GATE 0xe
#define SEG_SYS_32BIT_TRAP_GATE 0xf
/*
** IDT Descriptors
-**
+**
** IA-32 V3, page 5-13.
**
** All have a segment selector in bytes 2 and 3; Task Gate descriptors
@@ -246,58 +245,58 @@
** and 7 devoted to the 16 bits of the Offset, with the low nybble of
** byte 4 reserved.
*/
-#define IDT_PRESENT 0x8000
-#define IDT_DPL_MASK 0x6000
-# define IDT_DPL_0 0x0000
-# define IDT_DPL_1 0x2000
-# define IDT_DPL_2 0x4000
-# define IDT_DPL_3 0x6000
-#define IDT_GATE_TYPE 0x0f00
-# define IDT_TASK_GATE 0x0500
-# define IDT_INT16_GATE 0x0600
-# define IDT_INT32_GATE 0x0e00
-# define IDT_TRAP16_GATE 0x0700
-# define IDT_TRAP32_GATE 0x0f00
+#define IDT_PRESENT 0x8000
+#define IDT_DPL_MASK 0x6000
+#define IDT_DPL_0 0x0000
+#define IDT_DPL_1 0x2000
+#define IDT_DPL_2 0x4000
+#define IDT_DPL_3 0x6000
+#define IDT_GATE_TYPE 0x0f00
+#define IDT_TASK_GATE 0x0500
+#define IDT_INT16_GATE 0x0600
+#define IDT_INT32_GATE 0x0e00
+#define IDT_TRAP16_GATE 0x0700
+#define IDT_TRAP32_GATE 0x0f00
/*
** Interrupt vectors
*/
// predefined by the architecture
-#define VEC_DIVIDE_ERROR 0x00
-#define VEC_DEBUG_EXCEPTION 0x01
-#define VEC_NMI_INTERRUPT 0x02
-#define VEC_BREAKPOINT 0x03
-#define VEC_OVERFLOW 0x04
-#define VEC_BOUND_RANGE_EXCEEDED 0x05
-#define VEC_INVALID_OPCODE 0x06
-#define VEC_DEVICE_NOT_AVAILABLE 0x07
-#define VEC_DOUBLE_FAULT 0x08
-#define VEC_COPROCESSOR_OVERRUN 0x09
-#define VEC_INVALID_TSS 0x0a
-#define VEC_SEGMENT_NOT_PRESENT 0x0b
-#define VEC_STACK_FAULT 0x0c
-#define VEC_GENERAL_PROTECTION 0x0d
-#define VEC_PAGE_FAULT 0x0e
+#define VEC_DIVIDE_ERROR 0x00
+#define VEC_DEBUG_EXCEPTION 0x01
+#define VEC_NMI_INTERRUPT 0x02
+#define VEC_BREAKPOINT 0x03
+#define VEC_OVERFLOW 0x04
+#define VEC_BOUND_RANGE_EXCEEDED 0x05
+#define VEC_INVALID_OPCODE 0x06
+#define VEC_DEVICE_NOT_AVAILABLE 0x07
+#define VEC_DOUBLE_FAULT 0x08
+#define VEC_COPROCESSOR_OVERRUN 0x09
+#define VEC_INVALID_TSS 0x0a
+#define VEC_SEGMENT_NOT_PRESENT 0x0b
+#define VEC_STACK_FAULT 0x0c
+#define VEC_GENERAL_PROTECTION 0x0d
+#define VEC_PAGE_FAULT 0x0e
// 0x0f is reserved - unused
-#define VEC_FPU_ERROR 0x10
-#define VEC_ALIGNMENT_CHECK 0x11
-#define VEC_MACHINE_CHECK 0x12
-#define VEC_SIMD_FP_EXCEPTION 0x13
-#define VEC_VIRT_EXCEPTION 0x14
-#define VEC_CTRL_PROT_EXCEPTION 0x15
+#define VEC_FPU_ERROR 0x10
+#define VEC_ALIGNMENT_CHECK 0x11
+#define VEC_MACHINE_CHECK 0x12
+#define VEC_SIMD_FP_EXCEPTION 0x13
+#define VEC_VIRT_EXCEPTION 0x14
+#define VEC_CTRL_PROT_EXCEPTION 0x15
// 0x16 through 0x1f are reserved
// 0x20 through 0xff are user-defined, non-reserved
// IRQ0 through IRQ15 will use vectors 0x20 through 0x2f
-#define VEC_TIMER 0x20
-#define VEC_KBD 0x21
-#define VEC_COM2 0x23
-#define VEC_COM1 0x24
-#define VEC_PARALLEL 0x25
-#define VEC_FLOPPY 0x26
-#define VEC_MYSTERY 0x27
-#define VEC_MOUSE 0x2c
+#define VEC_TIMER 0x20
+#define VEC_KBD 0x21
+#define VEC_COM2 0x23
+#define VEC_COM1 0x24
+#define VEC_PARALLEL 0x25
+#define VEC_FLOPPY 0x26
+#define VEC_MYSTERY 0x27
+#define VEC_MOUSE 0x2c
#endif
diff --git a/boot/include/bios.h b/boot/include/bios.h
index a19e570..cf9f8ec 100644
--- a/boot/include/bios.h
+++ b/boot/include/bios.h
@@ -13,61 +13,61 @@
** BIOS-related memory addresses
*/
-#define BIOS_BDA 0x0400
+#define BIOS_BDA 0x0400
/*
** Selected BIOS interrupt numbers
*/
-#define BIOS_TIMER 0x08
-#define BIOS_KBD 0x09
-#define BIOS_VIDEO 0x10
-#define BIOS_EQUIP 0x11
-#define BIOS_MSIZ 0x12
-#define BIOS_DISK 0x13
-#define BIOS_SERIAL 0x14
-#define BIOS_MISC 0x15
-#define BIOS_KBDSVC 0x16
-#define BIOS_PRTSVC 0x17
-#define BIOS_BOOT 0x19
-#define BIOS_RTCPCI 0x1a
+#define BIOS_TIMER 0x08
+#define BIOS_KBD 0x09
+#define BIOS_VIDEO 0x10
+#define BIOS_EQUIP 0x11
+#define BIOS_MSIZ 0x12
+#define BIOS_DISK 0x13
+#define BIOS_SERIAL 0x14
+#define BIOS_MISC 0x15
+#define BIOS_KBDSVC 0x16
+#define BIOS_PRTSVC 0x17
+#define BIOS_BOOT 0x19
+#define BIOS_RTCPCI 0x1a
// BIOS video commands (AH)
-#define BV_W_ADV 0x0e
+#define BV_W_ADV 0x0e
// BIOS disk commands (AH)
-#define BD_RESET 0x00
-#define BD_CHECK 0x01
-#define BD_RDSECT 0x02
-#define BD_WRSECT 0x03
-#define BD_PARAMS 0x08
+#define BD_RESET 0x00
+#define BD_CHECK 0x01
+#define BD_RDSECT 0x02
+#define BD_WRSECT 0x03
+#define BD_PARAMS 0x08
// BIOS disk commands with parameters (AX)
-#define BD_READ(n) ((BD_RDSECT << 8) | (n))
-#define BD_READ1 0x0201
+#define BD_READ(n) ((BD_RDSECT << 8) | (n))
+#define BD_READ1 0x0201
// CMOS ports (used for masking NMIs)
-#define CMOS_ADDR 0x70
-#define CMOS_DATA 0x71
+#define CMOS_ADDR 0x70
+#define CMOS_DATA 0x71
// important related commands
-#define NMI_ENABLE 0x00
-#define NMI_DISABLE 0x80
+#define NMI_ENABLE 0x00
+#define NMI_DISABLE 0x80
/*
** Physical Memory Map Table (0000:2D00 - 0000:7c00)
**
** Primarily used with the BIOS_MISC interrupt
*/
-#define MMAP_SEG 0x02D0
-#define MMAP_DISP 0x0000
-#define MMAP_ADDR ((MMAP_SEG << 4) + MMAP_DISP)
-#define MMAP_SECTORS 0x0a
+#define MMAP_SEG 0x02D0
+#define MMAP_DISP 0x0000
+#define MMAP_ADDR ((MMAP_SEG << 4) + MMAP_DISP)
+#define MMAP_SECTORS 0x0a
-#define MMAP_ENT 24 /* bytes per entry */
-#define MMAP_MAX_ENTS (BOOT_ADDR - MMAP_ADDR - 4) / 24
+#define MMAP_ENT 24 /* bytes per entry */
+#define MMAP_MAX_ENTS (BOOT_ADDR - MMAP_ADDR - 4) / 24
-#define MMAP_CODE 0xE820 /* int 0x15 code */
-#define MMAP_MAGIC_NUM 0x534D4150 /* for 0xE820 interrupt */
+#define MMAP_CODE 0xE820 /* int 0x15 code */
+#define MMAP_MAGIC_NUM 0x534D4150 /* for 0xE820 interrupt */
#endif
diff --git a/boot/include/bootstrap.h b/boot/include/bootstrap.h
index 856d4eb..103c14f 100644
--- a/boot/include/bootstrap.h
+++ b/boot/include/bootstrap.h
@@ -9,86 +9,85 @@
** Addresses where various stuff goes in memory.
*/
-#ifndef BOOTSTRAP_H_
-#define BOOTSTRAP_H_
+#ifndef BOOTSTRAP_H_
+#define BOOTSTRAP_H_
/*
** The boot device
*/
-#define BDEV_FLOPPY 0x00
-#define BDEV_USB 0x80 /* hard drive */
+#define BDEV_FLOPPY 0x00
+#define BDEV_USB 0x80 /* hard drive */
-#define BDEV BDEV_USB /* default */
+#define BDEV BDEV_USB /* default */
/*
** Bootstrap definitions
*/
-#define BOOT_SEG 0x07c0 /* 07c0:0000 */
-#define BOOT_DISP 0x0000
-#define BOOT_ADDR (BOOT_SEG << 4 + BOOT_DISP)
+#define BOOT_SEG 0x07c0 /* 07c0:0000 */
+#define BOOT_DISP 0x0000
+#define BOOT_ADDR (BOOT_SEG << 4 + BOOT_DISP)
-#define PART2_DISP 0x0200 /* 07c0:0200 */
-#define PART2_ADDR (BOOT_SEG << 4 + PART2_DISP)
+#define PART2_DISP 0x0200 /* 07c0:0200 */
+#define PART2_ADDR (BOOT_SEG << 4 + PART2_DISP)
-#define SECTOR_SIZE 0x200 /* 512 bytes */
+#define SECTOR_SIZE 0x200 /* 512 bytes */
/* Note: this assumes the bootstrap is two sectors long! */
-#define BOOT_SIZE (SECTOR_SIZE + SECTOR_SIZE)
+#define BOOT_SIZE (SECTOR_SIZE + SECTOR_SIZE)
-#define OFFSET_LIMIT (0x10000 - SECTOR_SIZE)
+#define OFFSET_LIMIT (0x10000 - SECTOR_SIZE)
-#define BOOT_SP_DISP 0x4000 /* stack pointer 07c0:4000, or 0xbc00 */
-#define BOOT_SP_ADDR (BOOT_SEG << 4 + BOOT_SP_DISP)
-
-#define SECTOR1_END (BOOT_ADDR + SECTOR_SIZE)
-#define SECTOR2_END (BOOT_ADDR + BOOT_SIZE)
+#define BOOT_SP_DISP 0x4000 /* stack pointer 07c0:4000, or 0xbc00 */
+#define BOOT_SP_ADDR (BOOT_SEG << 4 + BOOT_SP_DISP)
+#define SECTOR1_END (BOOT_ADDR + SECTOR_SIZE)
+#define SECTOR2_END (BOOT_ADDR + BOOT_SIZE)
/*
** The target program itself
*/
-#define TARGET_SEG 0x00001000 /* 1000:0000 */
-#define TARGET_ADDR 0x00010000 /* and upward */
-#define TARGET_STACK 0x00010000 /* and downward */
+#define TARGET_SEG 0x00001000 /* 1000:0000 */
+#define TARGET_ADDR 0x00010000 /* and upward */
+#define TARGET_STACK 0x00010000 /* and downward */
/*
** The Global Descriptor Table (0000:0500 - 0000:2500)
*/
-#define GDT_SEG 0x00000050
-#define GDT_ADDR 0x00000500
+#define GDT_SEG 0x00000050
+#define GDT_ADDR 0x00000500
- /* segment register values */
-#define GDT_LINEAR 0x0008 /* All of memory, R/W */
-#define GDT_CODE 0x0010 /* All of memory, R/E */
-#define GDT_DATA 0x0018 /* All of memory, R/W */
-#define GDT_STACK 0x0020 /* All of memory, R/W */
+/* segment register values */
+#define GDT_LINEAR 0x0008 /* All of memory, R/W */
+#define GDT_CODE 0x0010 /* All of memory, R/E */
+#define GDT_DATA 0x0018 /* All of memory, R/W */
+#define GDT_STACK 0x0020 /* All of memory, R/W */
/*
** The Interrupt Descriptor Table (0000:2500 - 0000:2D00)
*/
-#define IDT_SEG 0x00000250
-#define IDT_ADDR 0x00002500
+#define IDT_SEG 0x00000250
+#define IDT_ADDR 0x00002500
/*
** Additional I/O ports used by the bootstrap code
*/
// keyboard controller
-#define KBD_DATA 0x60
-#define KBD_CMD 0x64
-#define KBD_STAT 0x64
+#define KBD_DATA 0x60
+#define KBD_CMD 0x64
+#define KBD_STAT 0x64
// status register bits
-#define KBD_OBSTAT 0x01
-#define KBD_IBSTAT 0x02
-#define KBD_SYSFLAG 0x04
-#define KBD_CMDDAT 0x08
+#define KBD_OBSTAT 0x01
+#define KBD_IBSTAT 0x02
+#define KBD_SYSFLAG 0x04
+#define KBD_CMDDAT 0x08
// commands
-#define KBD_P1_DISABLE 0xad
-#define KBD_P1_ENABLE 0xae
-#define KBD_RD_OPORT 0xd0
-#define KBD_WT_OPORT 0xd1
+#define KBD_P1_DISABLE 0xad
+#define KBD_P1_ENABLE 0xae
+#define KBD_RD_OPORT 0xd0
+#define KBD_WT_OPORT 0xd1
#ifdef ASM_SRC
@@ -101,17 +100,16 @@
// .byte granularity byte
// .byte upper 8 bits of base
// we use 4K units, so we ignore the lower 12 bits of the limit
-#define SEGNULL \
- .word 0, 0, 0, 0
+#define SEGNULL .word 0, 0, 0, 0
-#define SEGMENT(base,limit,dpl,type) \
- .word (((limit) >> 12) & 0xffff); \
- .word ((base) & 0xffff) ; \
- .byte (((base) >> 16) & 0xff) ; \
- .byte (SEG_PRESENT | (dpl) | SEG_NON_SYSTEM | (type)) ; \
- .byte (SEG_GRAN_4KBYTE | SEG_DB_32BIT | (((limit) >> 28) & 0xf)) ; \
- .byte (((base) >> 24) & 0xff)
+#define SEGMENT(base, limit, dpl, type) \
+ .word(((limit) >> 12) & 0xffff); \
+ .word((base) & 0xffff); \
+ .byte(((base) >> 16) & 0xff); \
+ .byte(SEG_PRESENT | (dpl) | SEG_NON_SYSTEM | (type)); \
+ .byte(SEG_GRAN_4KBYTE | SEG_DB_32BIT | (((limit) >> 28) & 0xf)); \
+ .byte(((base) >> 24) & 0xff)
-#endif /* ASM_SRC */
+#endif /* ASM_SRC */
#endif