init gnumach copy

1 files changed, 201 insertions, 0 deletions

diff --git a/i386/i386at/acpi_parse_apic.h b/i386/i386at/acpi_parse_apic.h
new file mode 100644
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+++ b/i386/i386at/acpi_parse_apic.h
@@ -0,0 +1,201 @@
+/* acpi_parse_apic.h - ACPI-MADT table parser. Header file
+   Copyright (C) 2018 Juan Bosco Garcia
+   Copyright (C) 2019 2020 Almudena Garcia Jurado-Centurion
+   Written by Juan Bosco Garcia and Almudena Garcia Jurado-Centurion
+
+   This file is part of Min_SMP.
+
+   Min_SMP is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   Min_SMP is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA. */
+
+#ifndef __ACPI_H__
+#define __ACPI_H__
+
+#include <stdint.h>
+
+enum ACPI_RETURN {
+    ACPI_BAD_CHECKSUM = -1,
+    ACPI_BAD_ALIGN = -2,
+    ACPI_NO_RSDP = -3,
+    ACPI_NO_RSDT = -4,
+    ACPI_BAD_SIGNATURE = -5,
+    ACPI_NO_APIC = -6,
+    ACPI_NO_LAPIC = -7,
+    ACPI_APIC_FAILURE = -8,
+    ACPI_FIT_FAILURE = -9,
+    ACPI_SUCCESS = 0,
+};
+
+#define ACPI_RSDP_ALIGN 16
+#define ACPI_RSDP_SIG "RSD PTR "
+
+struct acpi_rsdp {
+    uint8_t  	signature[8];
+    uint8_t  	checksum;
+    uint8_t  	oem_id[6];
+    uint8_t  	revision;
+    uint32_t 	rsdt_addr;
+} __attribute__((__packed__));
+
+struct acpi_rsdp2 {
+    struct acpi_rsdp v1;
+    uint32_t	length;
+    uint64_t	xsdt_addr;
+    uint8_t	checksum;
+    uint8_t 	reserved[3];
+} __attribute__((__packed__));
+
+/*
+ * RSDT Entry Header
+ *
+ * Header which stores the descriptors of tables pointed from RDSP's Entry Field
+ * Includes the signature of the table, to identify each table.
+ *
+ * In MADT, the signature is 'APIC'.
+ */
+struct acpi_dhdr {
+    uint8_t		signature[4];
+    uint32_t	length;
+    uint8_t  	revision;
+    uint8_t  	checksum;
+    uint8_t  	oem_id[6];
+    uint8_t  	oem_table_id[8];
+    uint32_t 	oem_revision;
+    uint8_t  	creator_id[4];
+    uint32_t 	creator_revision;
+} __attribute__((__packed__));
+
+
+#define ACPI_RSDT_SIG "RSDT"
+
+struct acpi_rsdt {
+    struct acpi_dhdr 	header;
+    uint32_t 			entry[0];
+} __attribute__((__packed__));
+
+#define ACPI_XSDT_SIG "XSDT"
+
+struct acpi_xsdt {
+    struct acpi_dhdr 	header;
+    uint64_t 			entry[0];
+} __attribute__((__packed__));
+
+struct acpi_address {
+    uint8_t	is_io;
+    uint8_t	reg_width;
+    uint8_t	reg_offset;
+    uint8_t	reserved;
+    uint64_t	addr64;
+} __attribute__((__packed__));
+
+/* APIC table signature. */
+#define ACPI_APIC_SIG "APIC"
+
+/* Types value for MADT entries: Local APIC, IOAPIC and IRQ Override. */
+enum ACPI_APIC_ENTRY_TYPE {
+    ACPI_APIC_ENTRY_LAPIC = 0,
+    ACPI_APIC_ENTRY_IOAPIC = 1,
+    ACPI_APIC_ENTRY_IRQ_OVERRIDE  = 2,
+    ACPI_APIC_ENTRY_NONMASK_IRQ = 4
+};
+
+/*
+ * APIC descriptor header
+ * Define the type of the structure (Local APIC, I/O APIC or others).
+ * Type: Local APIC (0), I/O APIC (1).
+ */
+struct acpi_apic_dhdr {
+    uint8_t 	type;
+    uint8_t 	length;
+} __attribute__((__packed__));
+
+
+/*
+ * Multiple APIC Description Table (MADT)
+ *
+ * Describes the APIC structures which exist in the machine.
+ * Includes the common address where Local APIC is mapped in main memory.
+ *
+ * Entry field stores the descriptors of APIC structures.
+ */
+struct acpi_apic {
+    struct   	acpi_dhdr header;       /* Header, which stores the descriptor for RDST's Entry field. */
+    uint32_t 	lapic_addr;             /* Local Interrupt Controller Address. */
+    uint32_t 	flags;
+    struct acpi_apic_dhdr entry[0];     /* Interrupt Controller Structure */
+} __attribute__((__packed__));
+
+/*
+ * Processor Local APIC Structure
+ *
+ * Stores information about APIC ID, flags and ACPI Processor UID
+ */
+
+struct acpi_apic_lapic {
+    struct      acpi_apic_dhdr header;
+    uint8_t     processor_id;           /* ACPI Processor UID */
+    uint8_t     apic_id;
+    uint32_t    flags;
+} __attribute__((__packed__));
+
+
+/*
+ * I/O APIC Structure
+ *
+ * Stores information about APIC ID, and I/O APIC tables
+ */
+
+struct acpi_apic_ioapic {
+    struct      acpi_apic_dhdr header;
+    uint8_t     apic_id;
+    uint8_t     reserved;
+    uint32_t    addr;
+    uint32_t    gsi_base;
+} __attribute__((__packed__));
+
+/*
+ * IRQ Override structure
+ *
+ * Stores information about IRQ override, with busses and IRQ.
+ */
+
+struct acpi_apic_irq_override {
+    struct acpi_apic_dhdr header;
+    uint8_t     bus;
+    uint8_t     irq;
+    uint32_t    gsi;
+    uint16_t    flags;
+} __attribute__((__packed__));
+
+
+#define ACPI_HPET_SIG "HPET"
+
+/*
+ * HPET High Precision Event Timer structure
+ */
+struct acpi_hpet {
+    struct acpi_dhdr header;
+    uint32_t	id;
+    struct acpi_address	address;
+    uint8_t	sequence;
+    uint16_t	minimum_tick;
+    uint8_t	flags;
+} __attribute__((__packed__));
+
+int acpi_apic_init(void);
+void acpi_print_info(phys_addr_t rsdp, void *rsdt, int acpi_rsdt_n);
+
+extern unsigned lapic_addr;
+
+#endif /* __ACPI_H__ */