SPRUJ28E November 2021 – September 2024 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
Table 4-61 shows the boot parameter table for PCIe boot. Must be preceded with the common boot parameters described in Table 4-54.
Byte Offset | Size (bytes) | Name | Default Value | Description |
---|---|---|---|---|
256 | 4 | portNum | From pins | Physical port number |
260 | 4 | AddrWid | 64 | PCIe address width |
264 | 4 | LinkRate | 8000 | Link rate in MHz |
268 | 4 | RefClkkHz | 100000 | Serdes reference clock in kHz |
272 | 4 | Nlanes | From pins | Number of PCIe lanes configured (link width) |
276 | 4 | Rsvd | 4 | Reserved |
280 | 4 | Rsvd | 256 | Reserved |
284 | 4 | Rsvd | 256 | Reserved |
288 | 4 | Rsvd | 0 | Reserved |
292 | 4 | Rsvd | 0 | Reserved |
296 | 4 | Vendor ID | 0x104C | PCIe Vendor ID value (read from control registers) |
300 | 4 | Device ID | 0xB00D | PCIe Device ID value (read from control registers) |
304 | 4 | Class code/revision ID | 0x04800001 | PCIe class code and revision ID value |
308 | 4 | Internal Clock | From Pins | If non-zero, internal (SoC) ref clock is used |
312 | 4 | sscEnable | 1 | Enable spread spectrum clock |
316 | 4 | RefSrc | From Pins | Selects serdes reference clock internal source. Refer to Reference Clock Distribution for details. |