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Patch lgy k11 to avoid allocating unused pages (bug) which was preventing 2 threads to be created

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TuxSH 2025-08-04 17:03:47 +02:00
parent 119499d28d
commit b3282abbf7
1 changed files with 11 additions and 0 deletions
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11
arm9/source/patches.c
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@ -850,6 +850,17 @@ u32 patchLgyK11(u8 *section1, u32 section1Size, u8 *section2, u32 section2Size)
if ((u8 *)off3 >= section1 + section1Size)
return 1;
off3[2] = 0x2001; // movs r0, #1
// Patch kernel to avoid allocating the two "configuration memory" pages, freeing
// 0x2000 bytes of kernel "heap" (which is 0xD000 AXIWRAM bytes on LGY K11 instead
// of the entire FCRAM on NFIRM). This is indeed a bug because if prevents two of the
// 12 KThread objects from being created
u16 *off4;
for (off4 = (u16 *)section1; (u8 *)off4 <= section1 + section1Size && (off4[0] != 0xB570 || off4[1] != 0x2200); off4++);
if ((u8 *)off4 >= section1 + section1Size)
return 1;
*off4 = 0x4770; // bx lr
return 0;
}