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Code Issues Releases Activity

loader: Add array alignment compensation

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CTCaer 2021-02-05 23:17:46 +02:00
parent 63d03303a2
commit 8b30bd4b57
1 changed files with 12 additions and 7 deletions
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19
loader/loader.c
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@ -73,7 +73,8 @@ void loader_main()
CLOCK(CLK_RST_CONTROLLER_SCLK_BURST_POLICY) = 0x20003333; // Set SCLK to PLLP_OUT (408MHz).
// Get Loader and Payload size.
u32 payload_size = sizeof(payload_00) + sizeof(payload_01);
u32 payload_size = sizeof(payload_00) + sizeof(payload_01); // Actual payload size.
payload_size += (u32)payload_01 - (u32)payload_00 - sizeof(payload_00); // Add array alignment.
u32 *payload_addr = (u32 *)payload_00;
// Relocate payload to a safer place.
@ -88,16 +89,20 @@ void loader_main()
bytes--;
}
// Uncompress payload parts.
// Set source address of the first part.
u8 *src_addr = (void *)(IPL_RELOC_TOP - ALIGN(payload_size, 4));
u32 pos = LZ_Uncompress((const u8 *)src_addr, (u8*)IPL_LOAD_ADDR, sizeof(payload_00));
src_addr += (u32)payload_01 - (u32)payload_00;
LZ_Uncompress((const u8 *)src_addr, (u8*)IPL_LOAD_ADDR + pos, sizeof(payload_01));
// Uncompress first part.
u32 dst_pos = LZ_Uncompress((const u8 *)src_addr, (u8*)IPL_LOAD_ADDR, sizeof(payload_00));
// Copy over boot configuration storage in case it was set.
// Set source address of the second part. Includes array alignment.
src_addr += (u32)payload_01 - (u32)payload_00;
// Uncompress second part.
LZ_Uncompress((const u8 *)src_addr, (u8*)IPL_LOAD_ADDR + dst_pos, sizeof(payload_01));
// Copy over boot configuration storage.
memcpy((u8 *)(IPL_LOAD_ADDR + IPL_PATCHED_RELOC_SZ), &b_cfg, sizeof(boot_cfg_t));
// Chainload.
// Chainload into uncompressed payload.
void (*ipl_ptr)() = (void *)IPL_LOAD_ADDR;
(*ipl_ptr)();