Bootloader: Difference between revisions

← Older edit

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 * 4th line is: <code>print_string(..., "%08X %08X",*((unsigned int*)(0x1FFFE000+0x18))`, `*((unsigned int*)(0x1fffe000+0x1C)));//See below memory notes.</code>
-== 0x1FFFE000 memory ==
+=== 0x1FFFE000 memory ===
 This memory is used by boot9 mainly for sending info to the arm11 for the error-screen. The data in this region is still stored in memory by the time the ARM9+ARM11 jumps to FIRM.
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 * s8[8] 0x1FFFE000+0x10: Status-codes originally from nand_findfirmpartition_loadfirm(), for each of the 8 NCSD partitions.
 * u32 0x1FFFE000+0x18: SD driver internal error bitfield
-* u32 0x1FFFE000+0x1C: SD driver SD hardware status bits from the controller, AND-ed with 0xFDFF0080 if eMMC, and 0xFDF90008 if SD.
+* u32 0x1FFFE000+0x1C: R1 status bits received from the SD device, AND-ed with 0xFDFF0080 if eMMC (NAND), otherwise 0xFDF90008 if SD.
+=== BootROM SD driver error bits ===
+{| class="wikitable" border="1"
+|-
+!  Value
+!  Description
+|-
+| 0x1
+| STATUS2: received cmd field does not match what was sent
+|-
+| 0x2
+| STATUS2: received CRC does not match what was calculated
+|-
+| 0x4
+| STATUS2: framing error, stop bit was not encountered
+|-
+| 0x8
+| STATUS2: data was not received within the timeout period
+|-
+| 0x10
+| STATUS2: RX FIFO overflow
+|-
+| 0x20
+| STATUS2: TX FIFO overflow
+|-
+| 0x40
+| STATUS2 (bit31): illegal access error (???)
+|-
+| 0x80
+| At least one error bit was set in the command reply from the SD device, or other unexpected state is reported.
+|-
+| 0x100
+| An illegal command was received by the SD device (ILLEGAL_COMMAND bit set).
+|-
+| 0x200
+| Timer-based timeout while waiting for SD device operations to finish.
+|-
+| 0x400
+| Got a timer-based timeout during MMC initialization sequence.
+|-
+| 0x800
+| ??? some sort of timeout
+|-
+| 0x8000
+| Timeout while trying to perform AES operation on sector data
+|-
+| 0x80000
+| Tried to perform AES operation while another AES operation is taking place
+|}
+=== BootROM SD device error bits ===
+These error codes are received directly from the device, and are in the same format as received in an R1 type reply.
+See [https://www.sdcard.org/downloads/pls/ SD Specifications Part 1 Physical Layer Simplified Specification] for the error bit list.
-== BootROM Status Codes ==
+=== BootROM Status Codes ===
 {| class="wikitable" border="1"
 |-