Add Bootloader

CMake/CommonConfig.cmake

@@ -4,7 +4,7 @@ find_program(QEMU_FOUND_PATH "qemu-system-riscv64")
 
 set(BIGOS_WARNINGS_AS_ERRORS OFF CACHE BOOL "Treat warnings as errors")
 set(BIGOS_QEMU_PATH "${QEMU_FOUND_PATH}" CACHE PATH "path to qemu")
-set(BIGOS_QEMU_OPTIONS "-machine virt -serial mon:stdio -nographic" CACHE STRING "options for qemu")
+set(BIGOS_QEMU_OPTIONS "-machine virt -serial mon:stdio -nographic -m 2G" CACHE STRING "options for qemu")
 
 separate_arguments(BIGOS_QEMU_OPTIONS_LIST UNIX_COMMAND "${BIGOS_QEMU_OPTIONS}")
 

CMakeLists.txt

@@ -3,6 +3,8 @@ project(BigOS LANGUAGES C ASM)
 
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 
+add_subdirectory(external/efi)
+
 include_directories(SYSTEM external/include)
 include_directories(include)
 

external/efi/CMakeLists.txt

@@ -0,0 +1,21 @@
+project(gnu-efi)
+
+add_library(gnu-efi INTERFACE)
+
+set(EFI_DIR ${PROJECT_SOURCE_DIR})
+
+set(LINKER_SCRIPT ${EFI_DIR}/lib/elf_riscv64_efi.lds)
+
+target_link_options(gnu-efi INTERFACE
+	-T ${LINKER_SCRIPT} ${EFI_DIR}/lib/crt0-efi-riscv64.o
+	LINKER:-nostdlib,-znocombreloc,-Bsymbolic)
+
+target_compile_options(gnu-efi INTERFACE
+	-fPIC -ffreestanding
+	 -fno-stack-protector -fno-stack-check
+	 -fshort-wchar -mabi=lp64d -march=rv64g
+)
+
+target_include_directories(gnu-efi SYSTEM INTERFACE ${EFI_DIR}/include/efi)
+target_link_directories(gnu-efi INTERFACE ${EFI_DIR}/lib)
+target_link_libraries(gnu-efi INTERFACE efi gnuefi)

external/efi/include/efi/efi.h

@@ -0,0 +1,90 @@
+/*++
+
+Copyright (c) 1998  Intel Corporation
+
+Module Name:
+
+    efi.h
+
+Abstract:
+
+    Public EFI header files
+
+
+
+Revision History
+
+--*/
+
+
+// Add a predefined macro to detect usage of the library
+#ifndef _GNU_EFI
+#define _GNU_EFI
+#endif
+
+//
+// Build flags on input
+//  EFI32
+//  EFI_DEBUG               - Enable debugging code
+//  EFI_NT_EMULATOR         - Building for running under NT
+//
+
+
+#ifndef _EFI_INCLUDE_
+#define _EFI_INCLUDE_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define EFI_FIRMWARE_VENDOR         L"INTEL"
+#define EFI_FIRMWARE_MAJOR_REVISION 12
+#define EFI_FIRMWARE_MINOR_REVISION 33
+#define EFI_FIRMWARE_REVISION ((EFI_FIRMWARE_MAJOR_REVISION <<16) | (EFI_FIRMWARE_MINOR_REVISION))
+
+#if defined(_M_X64) || defined(__x86_64__) || defined(__amd64__)
+#include "x86_64/efibind.h"
+#elif defined(_M_IX86) || defined(__i386__)
+#include "ia32/efibind.h"
+#elif defined(_M_IA64) || defined(__ia64__)
+#include "ia64/efibind.h"
+#elif defined (_M_ARM64) || defined(__aarch64__)
+#include "aarch64/efibind.h"
+#elif defined (_M_ARM) || defined(__arm__)
+#include "arm/efibind.h"
+#elif defined (_M_MIPS64) || defined(__mips64__) || defined(__mips64)
+#include "mips64el/efibind.h"
+#elif defined (__riscv) && __riscv_xlen == 64
+#include "riscv64/efibind.h"
+#elif defined (__loongarch64)
+#include "loongarch64/efibind.h"
+#else
+#error Usupported architecture
+#endif
+
+#include "eficompiler.h"
+#include "efidef.h"
+#include "efidevp.h"
+#include "efipciio.h"
+#include "efiprot.h"
+#include "eficon.h"
+#include "eficonex.h"
+#include "efiser.h"
+#include "efi_nii.h"
+#include "efipxebc.h"
+#include "efinet.h"
+#include "efiapi.h"
+#include "efifs.h"
+#include "efierr.h"
+#include "efiui.h"
+#include "efiip.h"
+#include "efiudp.h"
+#include "efitcp.h"
+#include "efipoint.h"
+#include "efishell.h"
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

external/efi/include/efi/efi_nii.h

@@ -0,0 +1,78 @@
+#ifndef _EFI_NII_H
+#define _EFI_NII_H
+
+/*++
+Copyright (c) 2000  Intel Corporation
+
+Module name:
+    efi_nii.h
+
+Abstract:
+
+Revision history:
+    2000-Feb-18 M(f)J   GUID updated.
+                Structure order changed for machine word alignment.
+                Added StringId[4] to structure.
+
+    2000-Feb-14 M(f)J   Genesis.
+--*/
+
+#define EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL_GUID \
+    { 0xE18541CD, 0xF755, 0x4f73, {0x92, 0x8D, 0x64, 0x3C, 0x8A, 0x79, 0xB2, 0x29} }
+
+#define EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL_REVISION  0x00010000
+#define EFI_NETWORK_INTERFACE_IDENTIFIER_INTERFACE_REVISION EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL_REVISION
+
+typedef enum {
+    EfiNetworkInterfaceUndi = 1
+} EFI_NETWORK_INTERFACE_TYPE;
+
+typedef struct _EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL {
+
+    UINT64 Revision;
+    // Revision of the network interface identifier protocol interface.
+
+    UINT64 ID;
+    // Address of the first byte of the identifying structure for this
+    // network interface.  This is set to zero if there is no structure.
+    //
+    // For PXE/UNDI this is the first byte of the !PXE structure.
+
+    UINT64 ImageAddr;
+    // Address of the UNrelocated driver/ROM image.  This is set
+    // to zero if there is no driver/ROM image.
+    //
+    // For 16-bit UNDI, this is the first byte of the option ROM in
+    // upper memory.
+    //
+    // For 32/64-bit S/W UNDI, this is the first byte of the EFI ROM
+    // image.
+    //
+    // For H/W UNDI, this is set to zero.
+
+    UINT32 ImageSize;
+    // Size of the UNrelocated driver/ROM image of this network interface.
+    // This is set to zero if there is no driver/ROM image.
+
+    CHAR8 StringId[4];
+    // 4 char ASCII string to go in class identifier (option 60) in DHCP
+    // and Boot Server discover packets.
+    // For EfiNetworkInterfaceUndi this field is "UNDI".
+    // For EfiNetworkInterfaceSnp this field is "SNPN".
+
+    UINT8 Type;
+    UINT8 MajorVer;
+    UINT8 MinorVer;
+    // Information to be placed into the PXE DHCP and Discover packets.
+    // This is the network interface type and version number that will
+    // be placed into DHCP option 94 (client network interface identifier).
+    BOOLEAN Ipv6Supported;
+    UINT8   IfNum;	// interface number to be used with pxeid structure
+} EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL, EFI_NETWORK_INTERFACE_IDENTIFIER_INTERFACE;
+
+// Note: Because it conflicted with the EDK2 struct name, the
+// 'EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL' GUID definition,
+// from older versions of gnu-efi, is now obsoleted.
+// Use 'EFI_NETWORK_INTERFACE_IDENTIFIER_PROTOCOL_GUID' instead.
+
+#endif // _EFI_NII_H