SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
Tracing in the public ROM code consists in 32-bit vectors for which each bit corresponds to a particular way point in the ROM code execution sequence. Table 34-56 through Table 34-59 list the organization of the tracing data in RAM. Tracing vectors are initialized at the beginning of the start-up phase and are updated all along the boot process.
There are two sets of tracing vectors (Table 34-14, Tracing Data). The first set is the current trace information (after a cold or warm reset). The second set holds a copy of trace vectors collected at the first ROM code run after a cold reset. As a result, after a warm reset it is possible to have visibility on the boot scenario that occurred during a cold reset.
Table 34-56 lists the organization of tracing vector 1.
Bit | Group | Meaning |
---|---|---|
0 | Boot | Passed the public reset vector |
1 | Boot | Entered main function |
2 | Boot | Running after the cold reset |
3 | Boot | Main booting routine entered |
4 | Memory boot | Memory booting started |
5 | Peripheral boot | Peripheral booting started |
6 | Boot | Booting loop reached last device |
7 | Boot | GP header found |
8 | Peripheral Boot | Booting message Skip peripheral booting received |
9 | Peripheral Boot | Booting message Change device received |
10 | Peripheral boot | Booting message Peripheral booting received |
11 | Peripheral boot | Booting message Get ASIC ID received |
12 | Peripheral boot | Device initialized |
13 | Peripheral boot | ASIC ID sent |
14 | Peripheral boot | Image received |
15 | Peripheral boot | Peripheral booting failed |
16 | Peripheral boot | Booting message not received (time-out) |
17 | Peripheral boot | Image size not received (time-out) |
18 | Peripheral boot | Image not received (time-out) |
19 | Reserved | |
20 | Boot | Configuration header found |
21 | Boot | CHSETTINGS item processed |
22 | Boot | Reserved |
23 | Boot | CHFLASH item processed |
24 | Boot | CHMMCSD item processed (clock) |
25 | Boot | CHMMCSD item processed (bus width) |
26 | Boot | CHMMCSD item processed (eMMC DDR mode) |
27 | Reserved | |
28 | Boot | SWCFG general detected |
29 | Boot | SWCFG clocks detected |
30 | Boot | SWCFG time-out detected |
31 | Reserved |
Table 34-57 lists the organization of tracing vector 2.
Bit | Group | Meaning |
---|---|---|
0 | Configuration Header | CHSATA item processed |
1:3 | Reserved | |
4 | USB | USB connected |
5 | USB | USB configured |
6:7 | Reserved | |
8 | Configuration Header | CHQSPI item processed (clock speed) |
9 | Configuration Header | CHQSPI item processed (Read command) |
10:11 | Reserved | Reserved |
12 | Memory boot | Memory booting trial (first block) |
13 | Memory boot | Memory booting trial (second block) |
14 | Memory boot | Memory booting trial (third block) |
15 | Memory boot | Memory booting trial (fourth block) |
16:27 | Reserved | |
28:29 | Reserved | |
30 | Boot | Jumping to Initial Software |
31 | Reserved |
Table 34-58 lists the organization of tracing vector 3.
Bit | Group | Meaning |
---|---|---|
0 | Reserved | |
1 | Memory boot | Memory booting device XIP |
2 | Memory boot | Memory booting device XIPWAIT |
3 | Memory boot | Memory booting device NAND |
4 | Reserved | |
5 | Memory boot | Memory booting device SD |
6 | Memory boot | Memory booting device: eMMC (from boot partition) |
7 | Memory boot | Memory booting device MMC2: eMMC (from user area) |
8 | Reserved | |
9 | Memory boot | Memory booting device: SATA |
10 | Memory boot | Memory booting device: QSPI_1 |
11 | Memory boot | Memory booting device: QSPI_4 |
12:15 | Reserved | |
16:18 | Reserved | |
19 | Peripheral boot | Peripheral booting device UART3 |
20 | Reserved | |
21 | Peripheral boot | Peripheral booting device USB |
22:23 | Reserved | |
24:27 | Reserved | |
28 | Boot | Reserved |
29 | Boot | Reserved |
30:31 | Reserved |
Table 34-59 lists the organization of tracing vector 4.
Bit | Group | Meaning |
---|---|---|
0:23 | Reserved | |
24 | MMC/SD | SD card detected PBIAS configuration is 1.8V |
25:27 | Reserved | |
28 | SATA | SATA is configured |
29 | SATA | SATA retried |
30 | SATA | SATA failed |
31 | Reserved |