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fusee: inject our kernel_ldr in place of N's

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This commit is contained in:
Michael Scire
2019-12-17 14:36:42 -08:00
committed by SciresM
parent daa7f5db79
commit d3b697fd1d
9 changed files with 59 additions and 14 deletions
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24
fusee/fusee-secondary/src/kernel_patches.c
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@@ -21,6 +21,12 @@
#include "kernel_patches.h"
#include "ips.h"
#define u8 uint8_t
#define u32 uint32_t
#include "kernel_ldr_bin.h"
#undef u8
#undef u32
#define MAKE_BRANCH(a, o) 0x14000000 | ((((o) - (a)) >> 2) & 0x3FFFFFF)
#define MAKE_NOP 0xD503201F
@@ -839,12 +845,12 @@ const kernel_info_t *get_kernel_info(void *kernel, size_t size) {
return NULL;
}
void package2_patch_kernel(void *_kernel, size_t size, bool is_sd_kernel, void **out_ini1) {
const kernel_info_t *kernel_info = get_kernel_info(_kernel, size);
void package2_patch_kernel(void *_kernel, size_t *kernel_size, bool is_sd_kernel, void **out_ini1) {
const kernel_info_t *kernel_info = get_kernel_info(_kernel, *kernel_size);
*out_ini1 = NULL;
/* Apply IPS patches. */
apply_kernel_ips_patches(_kernel, size);
apply_kernel_ips_patches(_kernel, *kernel_size);
if (kernel_info == NULL && !is_sd_kernel) {
/* Should this be fatal? */
@@ -856,8 +862,16 @@ void package2_patch_kernel(void *_kernel, size_t size, bool is_sd_kernel, void *
}
if (kernel_info->embedded_ini_offset != 0) {
/* Copy in our kernel loader. */
const uint32_t kernel_ldr_offset = *((volatile uint64_t *)((uintptr_t)_kernel + kernel_info->embedded_ini_ptr + 8));
memcpy((void *)((uintptr_t)_kernel + kernel_ldr_offset), kernel_ldr_bin, kernel_ldr_bin_size);
/* Update size. */
*kernel_size = kernel_ldr_offset + kernel_ldr_bin_size;
/* Set output INI ptr. */
*out_ini1 = (void *)((uintptr_t)_kernel + kernel_info->embedded_ini_offset);
*((volatile uint64_t *)((uintptr_t)_kernel + kernel_info->embedded_ini_ptr)) = (uint64_t)size;
*((volatile uint64_t *)((uintptr_t)_kernel + kernel_info->embedded_ini_ptr)) = (uint64_t)*kernel_size;
}
/* Apply hooks and patches. */
@@ -882,7 +896,7 @@ void package2_patch_kernel(void *_kernel, size_t size, bool is_sd_kernel, void *
fatal_error("kernel_patcher: insufficient space to apply patches!\n");
}
uint8_t *pattern_loc = search_pattern(kernel, size, kernel_info->patches[i].pattern, kernel_info->patches[i].pattern_size);
uint8_t *pattern_loc = search_pattern(kernel, *kernel_size, kernel_info->patches[i].pattern, kernel_info->patches[i].pattern_size);
if (pattern_loc == NULL) {
/* TODO: Should we print an error/abort here? */
continue;