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Kirk: minor fixes to the RE'ed ROM

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This commit is contained in:
Arthur Blot 2024-03-15 11:02:12 +01:00
parent 223e5f256e
commit 35bab12f50
1 changed files with 7 additions and 6 deletions
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13
src/kirk/kirk-rom.c
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@ -118,8 +118,9 @@
// 0x490 - HW_KEY_MESH_0 - read-only key seed
// 0x494 - HW_KEY_MESH_1 - read-only key seed
// 0x498 - HW_KEY_MESH_2 - read-only key seed
// 0x49C - HW_AES_KEYSLOT_ID - write-only, write ID to receive key in HW_HW_AES_PARAM. 0x00/0x01 = kbooti (devkit), 0x02 = kirk 1 (IPL), 0x03 = kirk 2, 0x04~0x83 = kirk 4/7,
// 0x4A0 - HW_AES_KEYSLOT - read-only
// 0x49C - HW_KEY_MESH_3 - read-only key seed
// 0x4A0 - HW_AES_KEYSLOT_ID - write-only, write ID to receive key in HW_HW_AES_PARAM. 0x00/0x01 = kbooti (devkit), 0x02 = kirk 1 (IPL), 0x03 = kirk 2, 0x04~0x83 = kirk 4/7,
// 0x4A1 - HW_AES_KEYSLOT - read-only
// 0x4B0 - HW_ECDSA_KEYSLOT_ID - same as above, but with ECC parameters. 0/1 = kirk 1 public key, 2/3 = kirk 2 public key, 4 = kirk 2 private key, 5/6 = kirk 3 public key
// 0x4B1 - HW_ECDSA_KEYSLOT - the obtained parameter (scalar or coordinate)
//
@ -251,7 +252,7 @@ void _start(void) // 0x001
} else if (HW_CPU_CMD == 13) {
kirk_cmd13_ecdsa_mul();
} else if (HW_CPU_CMD == 14) {
kirk_cmd14_prngen();
kirk_cmd14_gen_privkey();
} else if (HW_CPU_CMD == 15) {
kirk_cmd15_init();
} else if (HW_CPU_CMD == 16) {
@ -2571,9 +2572,9 @@ void kirk_cmd15_init(void) // 0x833
HW_DMA_BUF_SIZE = 0x1c;
dma_read();
HW_DMA_BUF[1] = HW_DMA_BUF[1] + 1;
__unknown_op(0x21, HW_DMA_BUF[0]); // TODO: unknown operation
// Fill the RNG buffer with a seed (?)
// 64-bit addition, HW_DMA_BUF[0] is the MSB, HW_DMA_BUF[1] is the LSB
HW_DMA_BUF._0_8_ = HW_DMA_BUF._0_8_ + 1;
// Seed the RNG buffer with the counter
RNG_BUFFER[0] = 0;
RNG_BUFFER[1] = 0;
RNG_BUFFER[2] = HW_DMA_BUF[0];