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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (C) 2023 Karel Gardas
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <bsp.h>
#include <inttypes.h>
#include <multiboot2.h>
#include <multiboot2impl.h>
#include <rtems/score/heap.h>
#include <efi.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef BSP_MULTIBOOT_SUPPORT
#ifdef BSP_USE_EFI_BOOT_SERVICES
extern void
efi_console_initialize( void );
extern void
efi_memory_heap_extend(void);
extern EFI_HANDLE IH;
extern EFI_SYSTEM_TABLE *ST;
extern EFI_BOOT_SERVICES *BS;
extern EFI_RUNTIME_SERVICES *RS;
#endif
extern int _multiboot2_magic;
extern void* _multiboot2_info_ptr;
static int already_processed = 0;
#endif
static int bootservices_running = 0;
static char multiboot_boot_args[256];
extern Heap_Control *RTEMS_Malloc_Heap;
#ifdef BSP_MULTIBOOT_SUPPORT
void
process_multiboot2_info()
{
struct multiboot_tag *tag;
unsigned size;
#ifdef BSP_USE_EFI_BOOT_SERVICES
ST = 0;
RS = 0;
BS = 0;
#endif
if (already_processed)
return;
if (_multiboot2_magic == MULTIBOOT2_BOOTLOADER_MAGIC) {
if ((*(unsigned*)_multiboot2_info_ptr) & 7) {
printf("Multiboot2 info @ %p, unaligned mbi: 0x%x\n", _multiboot2_info_ptr, *(unsigned*)_multiboot2_info_ptr);
}
else {
size = *(unsigned*)_multiboot2_info_ptr;
printf("Multiboot2 info @ %p, size 0x%x\n", _multiboot2_info_ptr, size);
for (tag = (struct multiboot_tag *) (_multiboot2_info_ptr + 8);
tag->type != MULTIBOOT_TAG_TYPE_END;
tag = (struct multiboot_tag *) ((multiboot_uint8_t *) tag + ((tag->size + 7) & ~7))) {
switch (tag->type) {
case MULTIBOOT_TAG_TYPE_CMDLINE:
printf("Multiboot2 booting arguments: `%s', args len: %d\n",
((struct multiboot_tag_string *) tag)->string,
((struct multiboot_tag_string *) tag)->size);
strncpy(multiboot_boot_args, ((struct multiboot_tag_string*)tag)->string, ((struct multiboot_tag_string*)tag)->size);
break;
case MULTIBOOT_TAG_TYPE_BOOT_LOADER_NAME:
printf("Multiboot2 loader name: `%s'\n", ((struct multiboot_tag_string *) tag)->string);
break;
case MULTIBOOT_TAG_TYPE_FRAMEBUFFER:
struct multiboot_tag_framebuffer* fbtag = (struct multiboot_tag_framebuffer*)tag;
uint64_t fbbase = fbtag->common.framebuffer_addr;
printf("Multiboot2 framebuffer @ %p, resolution: %dx%d, pitch/bpp: %d/%d, type: %d\n",
(void*)fbbase, fbtag->common.framebuffer_width, fbtag->common.framebuffer_height,
fbtag->common.framebuffer_pitch, fbtag->common.framebuffer_bpp,
fbtag->common.framebuffer_type);
break;
#ifdef BSP_USE_EFI_BOOT_SERVICES
case MULTIBOOT_TAG_TYPE_EFI64:
printf("EFI64 system table @ 0x%llx\n", ((struct multiboot_tag_efi64 *) tag)->pointer);
ST = ((EFI_SYSTEM_TABLE*)((struct multiboot_tag_efi64 *) tag)->pointer);
BS = ST->BootServices;
RS = ST->RuntimeServices;
efi_console_initialize();
efi_memory_heap_extend();
break;
case MULTIBOOT_TAG_TYPE_EFI_BS:
printf("GRUB: EFI boot services running.\n");
bootservices_running = 1;
break;
case MULTIBOOT_TAG_TYPE_EFI64_IH:
printf("EFI: 64bit image handle: 0x%llx\n", ((struct multiboot_tag_efi64_ih *) tag)->pointer);
IH = (EFI_HANDLE)((struct multiboot_tag_efi64_ih *) tag)->pointer;
break;
#endif
}
}
}
}
else {
printf("So while not being booted by multiboot2, let's see what's in its magic then?: %dx\n", _multiboot2_magic);
}
}
#endif /* BSP_MULTIBOOT_SUPPORT */
int
uefi_bootservices_running()
{
return bootservices_running;
}
const char*
boot_args()
{
return multiboot_boot_args;
}
int
get_boot_arg_int_value(const char* boot_args, const char* arg, int* val)
{
int len_arg = strlen(arg);
int len_try = strlen(boot_args) - len_arg;
int len_bootargs = strlen(boot_args);
char num[10];
for (int i = 0; i < len_try; i++) {
if (strncmp(&(boot_args[i]), arg, len_arg) == 0) {
i = i + len_arg + 1;
for (int j = 0; j < 10; j++) {
if (boot_args[i + j] != ' ' && i + j < len_bootargs)
num[j] = boot_args[i + j];
else {
num[j] = 0;
*val = atoi(num);
return 0;
}
}
}
}
return -1;
}
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