mirror of
https://github.com/wiiu-env/MochaLite.git
synced 2024-06-11 19:48:44 +02:00
119 lines
4.1 KiB
C
119 lines
4.1 KiB
C
/***************************************************************************
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* Copyright (C) 2016
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* by Dimok
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any
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* damages arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any
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* purpose, including commercial applications, and to alter it and
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* redistribute it freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you
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* must not claim that you wrote the original software. If you use
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* this software in a product, an acknowledgment in the product
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* documentation would be appreciated but is not required.
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*
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* 2. Altered source versions must be plainly marked as such, and
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* must not be misrepresented as being the original software.
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*
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* 3. This notice may not be removed or altered from any source
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* distribution.
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***************************************************************************/
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#include "types.h"
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#include "../../common/kernel_commands.h"
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#include "elf_patcher.h"
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#include "ios_mcp_patches.h"
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#include "kernel_patches.h"
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#include "exception_handler.h"
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#include "fsa.h"
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#include "utils.h"
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extern void __KERNEL_CODE_START(void);
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extern void __KERNEL_CODE_END(void);
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extern const patch_table_t kernel_patches_table[];
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extern const patch_table_t kernel_patches_table_end[];
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static const u32 mcpIoMappings_patch[] =
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{
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// vaddr paddr size ? ? ?
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0x0D000000, 0x0D000000, 0x001C0000, 0x00000000, 0x00000003, 0x00000000, // mapping 1
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0x0D800000, 0x0D800000, 0x001C0000, 0x00000000, 0x00000003, 0x00000000, // mapping 2
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0x0C200000, 0x0C200000, 0x00100000, 0x00000000, 0x00000003, 0x00000000 // mapping 3
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};
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static const u32 KERNEL_MCP_IOMAPPINGS_STRUCT[] =
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{
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(u32)mcpIoMappings_patch, // ptr to iomapping structs
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0x00000003, // number of iomappings
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0x00000001 // pid (MCP)
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};
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static int kernel_syscall_0x81(u32 command, u32 arg1, u32 arg2, u32 arg3)
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{
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switch(command)
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{
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case KERNEL_READ32:
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{
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return *(volatile u32*)arg1;
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}
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case KERNEL_WRITE32:
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{
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*(volatile u32*)arg1 = arg2;
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break;
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}
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case KERNEL_MEMCPY:
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{
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//set_domain_register(0xFFFFFFFF);
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kernel_memcpy((void*)arg1, (void*) arg2, arg3);
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break;
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}
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default:
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return -1;
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}
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return 0;
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}
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void kernel_launch_ios(u32 launch_address, u32 L, u32 C, u32 H)
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{
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void (*kernel_launch_bootrom)(u32 launch_address, u32 L, u32 C, u32 H) = (void*)0x0812A050;
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if(*(u32*)(launch_address - 0x300 + 0x1AC) == 0x00DFD000)
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{
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int level = disable_interrupts();
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unsigned int control_register = disable_mmu();
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u32 ios_elf_start = launch_address + 0x804 - 0x300;
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//! try to keep the order of virt. addresses to reduce the memmove amount
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mcp_run_patches(ios_elf_start);
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kernel_run_patches(ios_elf_start);
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restore_mmu(control_register);
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enable_interrupts(level);
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}
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kernel_launch_bootrom(launch_address, L, C, H);
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}
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void kernel_run_patches(u32 ios_elf_start)
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{
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section_write(ios_elf_start, (u32)__KERNEL_CODE_START, __KERNEL_CODE_START, __KERNEL_CODE_END - __KERNEL_CODE_START);
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//section_write_word(ios_elf_start, 0x0812A120, ARM_BL(0x0812A120, kernel_launch_ios));
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section_write(ios_elf_start, 0x08140DE0, KERNEL_MCP_IOMAPPINGS_STRUCT, sizeof(KERNEL_MCP_IOMAPPINGS_STRUCT));
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section_write_word(ios_elf_start, 0x0812A134, ARM_BL(0x0812A134, crash_handler_prefetch));
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section_write_word(ios_elf_start, 0x0812A1AC, ARM_BL(0x0812A1AC, crash_handler_data));
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section_write_word(ios_elf_start, 0x08129E50, ARM_BL(0x08129E50, crash_handler_undef_instr));
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section_write_word(ios_elf_start, 0x0812CD2C, ARM_B(0x0812CD2C, kernel_syscall_0x81));
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u32 patch_count = (u32)(((u8*)kernel_patches_table_end) - ((u8*)kernel_patches_table)) / sizeof(patch_table_t);
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patch_table_entries(ios_elf_start, kernel_patches_table, patch_count);
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}
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